WO2023109856A1

WO2023109856A1 - Communication transceiver, signal transceiving method, electronic device and storage medium

Info

Publication number: WO2023109856A1
Application number: PCT/CN2022/138953
Authority: WO
Inventors: 王大鹏; 宁东方; 段亚娟; 张青青; 张作锋; 许勇; 黄�俊
Original assignee: 中兴通讯股份有限公司
Priority date: 2021-12-15
Filing date: 2022-12-14
Publication date: 2023-06-22
Also published as: CN116346151A

Abstract

The present disclosure relates to a communication transceiver, a signal transceiving method, an electronic device, and a storage medium. The communication transceiver comprises at least one transmission link and at least one observation branch with the same number, at least one receiving link, at least one auxiliary branch, at least one first cancellation module and at least one second cancellation module with the same number, and an antenna. Each transmission link is used for generating and outputting a downlink signal according to a downlink baseband signal. Each observation branch is used for generating and outputting a second cancellation signal. Each receiving link is used for generating and outputting a first combined signal. Each auxiliary branch is used for generating and outputting a first cancellation signal. Each first cancellation module and each second cancellation module are respectively used for performing two-stage interference cancellation on the uplink baseband signal according to the first cancellation signal and the second cancellation signal.

Description

通信收发器、信号收发方法、电子设备及存储介质Communication transceiver, signal transceiving method, electronic device, and storage medium

技术领域technical field

本公开涉及移动通信技术领域。The present disclosure relates to the technical field of mobile communication.

背景技术Background technique

长期以来，无线收发信机采用半双工模式进行信息交换，即时分双工(TDD)或频分双工(FDD)。在半双工模式下，收发信机不能在同一时隙进行相同频段的信号发送与接收，这种通信方式制约了频谱的利用效率。为了突破这一限制，全双工通信受到了较多的关注。全双工通信技术允许节点同时同频发送与接收信号，显著提升对频谱、时隙资源的利用效率。全双工通信具有如下优点：第一，其数据吞吐量能够近似达到半双工模式的两倍；第二，能够显著减小端对端延迟；第三，能够避免信道冲突以及解决隐藏终端等问题。For a long time, wireless transceivers have used half-duplex modes for information exchange, either Time Division Duplex (TDD) or Frequency Division Duplex (FDD). In the half-duplex mode, the transceiver cannot transmit and receive signals in the same frequency band in the same time slot. This communication mode restricts the efficiency of spectrum utilization. In order to break through this limitation, full-duplex communication has received more attention. Full-duplex communication technology allows nodes to send and receive signals at the same frequency at the same time, significantly improving the utilization efficiency of spectrum and time slot resources. Full-duplex communication has the following advantages: first, its data throughput can be approximately twice that of half-duplex mode; second, it can significantly reduce end-to-end delay; third, it can avoid channel conflicts and solve hidden terminals, etc. question.

发明内容Contents of the invention

本公开实施例的主要目的在于提出一种通信收发器、信号收发方法、电子设备及存储介质，通过在通信收发器中独立生成射频抵消信号和噪声抵消信号，利用两级干扰抵消的方式，极大的提升通信收发器的自适应能力和抵消性能。The main purpose of the embodiments of the present disclosure is to provide a communication transceiver, a signal transceiving method, an electronic device, and a storage medium. By independently generating a radio frequency cancellation signal and a noise cancellation signal in the communication transceiver, and using a two-stage interference cancellation method, extremely Greatly improve the adaptive ability and offset performance of the communication transceiver.

为实现上述目的，本公开实施例提供了一种通信收发器，包括：至少一个发射链路、至少一个观测支路、至少一个接收链路、至少一个辅助支路、至少一个第一抵消模块、至少一个第二抵消模块、和天线，其中，所述至少一个发射链路的数量与所述至少一个观测支路的数量相同，并且所述至少一个接收链路的数量、所述至少一个辅助支路的数量、所述至少一个第一抵消模块的数量和所述至少一个第二抵消模块的数量彼此相同，至少一个发射链路中的每一个的输出端和至少一个观测支路中的与该发射链路对应的观测支路的输入端及天线连接，至少一个发射链路中的每一个被配置为根据下行基带信号生成并输出下行信号，至少一个观测支路中的所有观测支路的输出端均和至少一个第二抵消模块中的每一个的输入端连接，至少一个观测支路中的每一个被配置为根据下行基带信号和下行信号生成并输出第二抵消信号，至少一个第二抵消模块中的每一个的另一输入端和至少一个接收链路中的与该第二抵消模块对应的接收链路的输出端连接，至少一个第二抵消模块中的每一个被配置为根据获取到的第二合路信号和第二抵消信号，生成并输出用于解析出上行信号的第三合路信号，至少一个接收链路中的每一个的输入端和至少一个第一抵消模块中的与该接收链路对应的第一抵消模块的输出端连接，至少一个接收链路中的每一个被配置为根据获取到的第一合路信号，生成并输出第二合路信号，至少一个第一抵消模块中的每一个的输入端和至少一个辅助支路中的与该第一抵消模块对应的辅助支路的输出端及天线连接，至少一个第一抵消模块中的每一个被配置为根据获取到的第一抵消信号和上行基带信号，生成并输出第一合路信号，至少一个辅助支路中的每一个的输入端和至少一个接收链路中的与该辅助支路对应的接收链路的输出端连接，至少一个辅助支路中的每一个被配置为根据下行基带信号和第二合路信号生成并输出第一抵消信号，并且天线被配置为发送下行信号，并接收上行基带信号。To achieve the above purpose, an embodiment of the present disclosure provides a communication transceiver, including: at least one transmitting link, at least one observation branch, at least one receiving link, at least one auxiliary branch, at least one first cancellation module, At least one second cancellation module, and an antenna, wherein the number of the at least one transmission chain is the same as the number of the at least one observation branch, and the number of the at least one reception chain, the at least one auxiliary branch The number of the way, the number of the at least one first cancellation module and the number of the at least one second cancellation module are the same as each other, and the output end of each of the at least one transmission chain and the at least one observation branch are the same as the The input end and antenna connection of the observation branch corresponding to the transmission chain, each of at least one transmission chain is configured to generate and output a downlink signal according to the downlink baseband signal, and the output of all observation branches in at least one observation branch Each terminal is connected to the input end of each of the at least one second cancellation module, and each of the at least one observation branch is configured to generate and output a second cancellation signal according to the downlink baseband signal and the downlink signal, and at least one second cancellation The other input end of each of the modules is connected to the output end of the receiving chain corresponding to the second canceling module in the at least one receiving chain, and each of the at least one second canceling module is configured to obtain The second combination signal and the second cancellation signal generate and output the third combination signal used to resolve the uplink signal, the input end of each of the at least one receiving chain and the AND in at least one first cancellation module The output end of the first canceling module corresponding to the receiving chain is connected, and each of at least one receiving chain is configured to generate and output a second combined signal according to the obtained first combined signal, and at least one first The input end of each of the canceling modules is connected to the output end of the auxiliary branch corresponding to the first canceling module in the at least one auxiliary branch and the antenna, and each of the at least one first canceling module is configured to acquire The received first cancellation signal and uplink baseband signal, generate and output the first combined signal, the input end of each of at least one auxiliary branch and the receiving chain corresponding to the auxiliary branch in at least one receiving chain Each of the at least one auxiliary branch is configured to generate and output a first cancellation signal according to the downlink baseband signal and the second combined signal, and the antenna is configured to send the downlink signal and receive the uplink baseband signal.

为实现上述目的，本公开实施例还提供了一种信号收发方法，包括：根据下行基带信号生成并发送下行信号；根据下行基带信号生成第一抵消信号，并根据下行基带信号的噪声信号生成第二抵消信号；根据第一抵消信号和第二抵消信号，对发送下行信号过程中接收到的上行基带信号进行两级干扰抵消；解析经过两级干扰抵消后的上行基带信号，获取上行信号。In order to achieve the above purpose, an embodiment of the present disclosure further provides a signal transceiving method, including: generating and sending a downlink signal according to the downlink baseband signal; generating a first cancellation signal according to the downlink baseband signal, and generating a second cancellation signal according to a noise signal of the downlink baseband signal. The second cancellation signal: according to the first cancellation signal and the second cancellation signal, two-stage interference cancellation is performed on the uplink baseband signal received in the process of sending the downlink signal; the uplink baseband signal after the two-stage interference cancellation is analyzed to obtain the uplink signal.

为实现上述目的，本公开实施例还提供了一种电子设备，包括：至少一个处理器；以及，与至少一个处理器通信连接的存储器；其中，存储器存储有可被至少一个处理器执行的指令，指令被至少一个处理器执行时，使至少一个处理器执行如上所述的信号收发方法。To achieve the above object, an embodiment of the present disclosure further provides an electronic device, including: at least one processor; and a memory connected to the at least one processor in communication; wherein, the memory stores instructions that can be executed by the at least one processor , when the instructions are executed by at least one processor, at least one processor is made to execute the signal transceiving method as described above.

为实现上述目的，本公开实施例还提供了一种计算机可读存储介质，其存储有计算机程序，计算机程序被处理器执行时实现如上所述的信号收发方法。In order to achieve the above object, an embodiment of the present disclosure further provides a computer-readable storage medium, which stores a computer program, and when the computer program is executed by a processor, the above-mentioned method for transmitting and receiving signals is implemented.

本公开实施例提供的通信收发器，在工作过程中，利用辅助支路在数字域获取射频抵消信号的基带副本，并通过信号处理生成第一抵消信号(射频抵消信号)；利用观测支路根据发射链路的下行基带信号和下行信号，在数字域获取抵消下行基带信号噪声分量对上行信号自干扰的第二抵消信号(噪声抵消信号)；然后将第一抵消信号和接收到的上行基带信号进行合路后，通过接收链路对第一合路信号进行调整生成第二合路信号，再将第二抵消信号与第二合路信号进行合路生成用于解析出上行信号的第三合路信号。通过在数字域独立的获取两级抵消信号，提高通信收发器的自适应能力；通过抵消下行基带信号对上行信号射频影响和噪声影响的两级抵消信号，对上行基带信号进行两级自干扰抵消，极大的提升通信收发器的自干扰抵消性能；In the communication transceiver provided by the embodiments of the present disclosure, during the working process, the auxiliary branch is used to obtain the baseband copy of the radio frequency cancellation signal in the digital domain, and the first cancellation signal (radio frequency cancellation signal) is generated through signal processing; the observation branch is used according to The downlink baseband signal and the downlink signal of the transmission link are obtained in the digital domain to cancel the second cancellation signal (noise cancellation signal) that cancels the noise component of the downlink baseband signal to the self-interference of the uplink signal; then the first cancellation signal and the received uplink baseband signal After combining, the first combined signal is adjusted through the receiving link to generate a second combined signal, and then the second cancellation signal is combined with the second combined signal to generate a third combined signal for analyzing the uplink signal. road signal. By independently obtaining two-level cancellation signals in the digital domain, the adaptive capability of the communication transceiver is improved; by canceling the two-level cancellation signals that the downlink baseband signal has on the radio frequency and noise effects of the uplink signal, two-level self-interference cancellation is performed on the uplink baseband signal , which greatly improves the self-interference cancellation performance of the communication transceiver;

辅助支路和观测支路仅用于抵消信号生成，不用于抵消协调，提升通信收发器自干扰抵消的稳定性。The auxiliary branch and the observation branch are only used for offset signal generation, not for offset coordination, so as to improve the stability of communication transceiver self-interference cancellation.

附图说明Description of drawings

一个或多个实施例通过与之对应的附图中的图片进行示例性说明，这些示例性说明并不构成对实施例的限定。One or more embodiments are exemplified by pictures in the accompanying drawings, and these exemplifications are not intended to limit the embodiments.

图1是根据本公开的实施例的通信收发器的结构示意图；FIG. 1 is a schematic structural diagram of a communication transceiver according to an embodiment of the present disclosure;

图2是根据本公开的实施例的通信收发器的结构示意图；FIG. 2 is a schematic structural diagram of a communication transceiver according to an embodiment of the present disclosure;

图3是根据本公开的实施例的通信收发器的结构示意图；FIG. 3 is a schematic structural diagram of a communication transceiver according to an embodiment of the present disclosure;

图4是根据本公开的实施例的信号收发方法流程图；FIG. 4 is a flowchart of a signal transceiving method according to an embodiment of the present disclosure;

图5是根据本公开的实施例的电子设备的结构示意图。Fig. 5 is a schematic structural diagram of an electronic device according to an embodiment of the present disclosure.

具体实施方式Detailed ways

在全双工通信的实现中，面临的主要问题是自干扰现象。全双工通信收发器双工带宽更小，且发射与接收不区分时隙，发射信号的部分能量会通过泄漏、耦合、多径反射等途径进入接收链路，对接收到的用户信号造成干扰。这部分进入接收链路的、源自发射链路的能量称为自干扰信号。在移动通信典型应用场景中，下行发射信号功率会比上行接收信号功率高约110dB以上。为使自干扰信号不显著影响上行信号的接收与解调，全双工通信收发器的收发隔离度需要依场景满足特定隔离度要求。In the realization of full-duplex communication, the main problem faced is self-interference phenomenon. The duplex bandwidth of the full-duplex communication transceiver is smaller, and the transmission and reception do not distinguish between time slots. Part of the energy of the transmitted signal will enter the receiving link through leakage, coupling, multipath reflection, etc., causing interference to the received user signal . This part of the energy that enters the receiving chain and originates from the transmitting chain is called self-interference signal. In a typical application scenario of mobile communication, the downlink transmit signal power will be about 110dB higher than the uplink receive signal power. In order to prevent the self-interference signal from significantly affecting the reception and demodulation of the uplink signal, the transceiver isolation of the full-duplex communication needs to meet the specific isolation requirement according to the scenario.

通常，在传播域、射频域和数字域共同实现所需达到的隔离度要求。传播域的隔离技术包括天线的物理分离、极化天线、环形器等隔离或自干扰抵消方法。射频域自干扰抵消技术目前主要采用多抽头射频抵消器方案，通过n阶FIR滤波器重构反相自干扰信号，FIR滤波器的每一级由固定延迟线、可调衰减器和可调移相器组成。数字域自干扰抵消主要以发送的基带信号作为参考信号，通过自适应滤波器实现自干扰信道建模。Typically, the desired isolation requirements are achieved jointly in the propagation, radio frequency and digital domains. Isolation techniques in the propagation domain include physical separation of antennas, polarized antennas, circulators and other isolation or self-interference cancellation methods. At present, the self-interference cancellation technology in the radio frequency domain mainly adopts the multi-tap radio frequency canceller scheme, and reconstructs the anti-phase self-interference signal through the n-order FIR filter. Each stage of the FIR filter is composed of a fixed delay line, an adjustable attenuator and an adjustable Phase device composition. The self-interference cancellation in the digital domain mainly uses the transmitted baseband signal as a reference signal, and realizes self-interference channel modeling through an adaptive filter.

但是，采用多抽头射频抵消器方案时，性能收益较低、对时变干扰信道自适应能力差、***稳定性也较容易受到影响。采用数字域自干扰抵消方案时，在干扰较强的情况下，数字量化噪声较大，自干扰抵消效果较差。However, when the multi-tap radio frequency canceller scheme is adopted, the performance gain is low, the adaptive ability to the time-varying interference channel is poor, and the system stability is easily affected. When the digital domain self-interference cancellation scheme is adopted, in the case of strong interference, the digital quantization noise is relatively large, and the self-interference cancellation effect is poor.

因此，如何提高全双工通信收发器自干扰抵消的性能和自适应能力是一个迫切需要得到解决的问题。Therefore, how to improve the self-interference cancellation performance and self-adaptive ability of the full-duplex communication transceiver is an urgent problem to be solved.

为了解决上述问题，本公开的实施例提供了一种通信收发器，包括：至少一个发射链路、至少一个观测支路、至少一个接收链路、至少一个辅助支路、至少一个第一抵消模块、至少一个第二抵消模块、和天线；其中，每个发射链路的输出端和与发射链路对应的观测支路的输入端及天线连接，每个发射链路用于根据下行基带信号生成并输出下行信号；所有观测支路的输出端均与每个第二抵消模块的输入端连接，每个观测支路用于根据下行基带信号和下行信号生成并输出第二抵消信号；每个第二抵消模块的另一输入端和与第二抵消模块对应的接收链路的输出端连接，每个第二抵消模块用于根据获取到的第二合路信号和第二抵消信号，生成并输出用于解析出上行信号的第三合路信号；每个接收链路的输入端和与接收链路对应的第一抵消模块的输出端连接，每个接收链路用于根据获取到的第一合路信号，生成并输出第二合路信号；每个第一抵消模块的输入端和与第一抵消模块对应的辅助支路的输出端及天线连接，每个第一抵消模块用于根据获取到的第一抵消信号和上行基带信号，生成并输出第一合路信号；每个辅助支路的输入端和与辅助支路对应的接收链路的输出端连接，每个辅助支路用于根据下行基带信号和第二合路信号生成并输出第一抵消信号；并且天线用于发送下行信号，并接收上行基带信号。In order to solve the above problems, an embodiment of the present disclosure provides a communication transceiver, including: at least one transmission link, at least one observation branch, at least one reception link, at least one auxiliary branch, and at least one first cancellation module , at least one second canceling module, and an antenna; wherein, the output end of each transmission chain is connected to the input end of the observation branch corresponding to the transmission chain and the antenna, and each transmission chain is used to generate And output the downlink signal; the output ends of all observation branches are connected to the input end of each second offset module, and each observation branch is used to generate and output the second offset signal according to the downlink baseband signal and the downlink signal; each first The other input terminal of the second canceling module is connected to the output terminal of the receiving link corresponding to the second canceling module, and each second canceling module is used to generate and output the obtained second combination signal and the second canceling signal The third combined signal for parsing the uplink signal; the input end of each receiving chain is connected to the output end of the first canceling module corresponding to the receiving chain, and each receiving chain is used to obtain the first Combined signal, generating and outputting a second combined signal; the input end of each first canceling module is connected to the output terminal of the auxiliary branch corresponding to the first canceling module and the antenna, and each first canceling module is used to obtain The first canceling signal and uplink baseband signal received, generate and output the first combined signal; the input end of each auxiliary branch is connected with the output end of the receiving link corresponding to the auxiliary branch, and each auxiliary branch is used for Generate and output the first cancellation signal according to the downlink baseband signal and the second combined signal; and the antenna is used to send the downlink signal and receive the uplink baseband signal.

本公开实施例提供的通信收发器，在工作过程中，利用辅助支路，在数字域获取射频抵消信号的基带副本，并通过信号处理生成第一抵消信号(射频抵消信号)；利用观测支路根据发射链路的下行基带信号和下行信号，在数字域获取抵消下行基带信号噪声分量对上行信号自干扰的第二抵消信号(噪声抵消信号)；然后将第一抵消信号和接收到的上行基带信号进行合路后，通过接收链路对第一合路信号进行调整生成第二合路信号，再将第二抵消信号与第二合路信号进行合路生成用于解析出上行信号的第三合路信号。通过在数字域独立的获取两级抵消信号，提高通信收发器的自适应能力；通过抵消下行基带信号对上行信号射频影响和噪声影响的两级抵消信号，对上行基带信号进行两级自干扰抵消，极大的提升通信收发器的自干扰抵消性能；辅助支路和观测支路仅用于抵消信号生成，不用于抵消协调，提升通信收发器自干扰抵消的稳定性。The communication transceiver provided by the embodiment of the present disclosure uses the auxiliary branch to obtain the baseband copy of the radio frequency cancellation signal in the digital domain during operation, and generates the first cancellation signal (radio frequency cancellation signal) through signal processing; uses the observation branch According to the downlink baseband signal and the downlink signal of the transmission link, the second cancellation signal (noise cancellation signal) that cancels the noise component of the downlink baseband signal to the self-interference of the uplink signal is obtained in the digital domain; then the first cancellation signal and the received uplink baseband After the signals are combined, the first combined signal is adjusted through the receiving link to generate the second combined signal, and then the second cancellation signal is combined with the second combined signal to generate the third combined signal for analyzing the uplink signal. combined signal. By independently obtaining two-level cancellation signals in the digital domain, the adaptive capability of the communication transceiver is improved; by canceling the two-level cancellation signals that the downlink baseband signal has on the radio frequency and noise effects of the uplink signal, two-level self-interference cancellation is performed on the uplink baseband signal , which greatly improves the self-interference cancellation performance of the communication transceiver; the auxiliary branch and the observation branch are only used for cancellation signal generation, not for cancellation coordination, and improve the stability of the self-interference cancellation of the communication transceiver.

为使本公开实施例的目的、技术方案和优点更加清楚，下面将结合附图对本公开的各实施例进行详细的阐述。然而，本领域的普通技术人员可以理解，在本公开各实施例中，为了使读者更好地理解本公开而提出了许多技术细节。但是，即使没有这些技术细节和基于以下各实施例的种种变化和修改，也可以实现本公开所要求保护的技术方案。以下各个实施例的划分是为了描述方便，不应对本公开的具体实现方式构成任何限定，各个实施例在不矛盾的前提下可以相互结合相互引用。In order to make the purpose, technical solutions, and advantages of the embodiments of the present disclosure clearer, various embodiments of the present disclosure will be described in detail below in conjunction with the accompanying drawings. However, those skilled in the art can understand that in various embodiments of the present disclosure, many technical details are provided for readers to better understand the present disclosure. However, even without these technical details and various changes and modifications based on the following embodiments, the technical solutions claimed in the present disclosure can be realized. The division of the following embodiments is for the convenience of description, and should not constitute any limitation to the specific implementation of the present disclosure, and the embodiments can be combined and referenced to each other on the premise of no contradiction.

下面将结合具体的实施例的对本公开记载的通信收发器的实现细节进行具体的说明，以下内容仅为方便理解提供的实现细节，并非实施本方案的必须。The implementation details of the communication transceiver recorded in the present disclosure will be specifically described below in conjunction with specific embodiments. The following content is only implementation details provided for easy understanding, and is not necessary for implementing the present solution.

本公开提供了一种通信收发器，通信收发器中发射链路、接收链路均可以是一路或者多路。为了便于理解，本公开以通信收发器中包括一路发射链路和一路接收链路进行说明。The present disclosure provides a communication transceiver, in which the transmitting link and the receiving link can be one or more. For ease of understanding, the present disclosure is described as including a transmission link and a reception link in a communication transceiver.

图1是根据本公开的实施例的通信收发器的结构示意图。参考图1，通信收发器包括发射链路101、观测支路102、第二抵消模块103、接收链路104、第一抵消模块105、辅助支路106和天线107。Fig. 1 is a schematic structural diagram of a communication transceiver according to an embodiment of the present disclosure. Referring to FIG. 1 , the communication transceiver includes a transmission link 101 , an observation branch 102 , a second cancellation module 103 , a reception link 104 , a first cancellation module 105 , an auxiliary branch 106 and an antenna 107 .

发射链路101用于根据下行基带信号生成并输出下行信号。The transmit link 101 is used to generate and output a downlink signal according to a downlink baseband signal.

通信收发器中的发射链路101用于对下行基带信号进行信号处理以生成下行信号，例如，对下行基带信号进行数模转换、上变频、滤波、增益调整和功率放大等处理，然后将得到的下行信号输出。因此，发射链路101的输出端和观测支路102的输入端及天线107连接，发射链路101用于根据接收到的下行基带信号，生成并输出下行信号。The transmit link 101 in the communication transceiver is used to perform signal processing on the downlink baseband signal to generate a downlink signal, for example, perform digital-to-analog conversion, up-conversion, filtering, gain adjustment, and power amplification on the downlink baseband signal, and then obtain downlink signal output. Therefore, the output end of the transmitting link 101 is connected to the input end of the observation branch 102 and the antenna 107, and the transmitting link 101 is used to generate and output a downlink signal according to the received downlink baseband signal.

观测支路102用于根据下行基带信号和下行信号生成并输出第二抵消信号。The observation branch 102 is configured to generate and output a second cancellation signal according to the downlink baseband signal and the downlink signal.

观测支路102用于在数字域获取抵消下行基带信号的噪声分量对上行信号造成的噪声干扰的第二抵消信号(噪声抵消信号)，并将获取到的第二抵消信号传输到第二抵消模块103中。因此，观测支路102的输出端与第二抵消模块103的输入端连接，观测支路102用于根据获取到的下行基带信号和基于下行基带信号生成的下行信号，生成并输出第二抵消信号。The observation branch 102 is used to obtain a second cancellation signal (noise cancellation signal) that cancels the noise interference caused by the noise component of the downlink baseband signal to the uplink signal in the digital domain, and transmits the obtained second cancellation signal to the second cancellation module 103 in. Therefore, the output end of the observation branch 102 is connected to the input end of the second cancellation module 103, and the observation branch 102 is used to generate and output the second cancellation signal according to the acquired downlink baseband signal and the downlink signal generated based on the downlink baseband signal .

第二抵消模块103用于生成并输出用于解析上行信号的第三合路信号。The second canceling module 103 is configured to generate and output a third combined signal for parsing the uplink signal.

第二抵消模块103用于对接收链路104输出的第二合路信号以及观测支路102输出的第二抵消信号进行合路，以抵消第二合路信号中的噪声干扰。因此，第二抵消模块103的另一输入端和接收链路104的输出端连接，在接收到接收链路104输出的第二合路信号和观测支路102输出的第二抵消信号后，第二抵消模块103根据获取到的第二合路信号和第二抵消信号，生成并输出用于解析出上行信号的第三合路信号。The second canceling module 103 is configured to combine the second combined signal output by the receiving link 104 and the second canceled signal output by the observation branch 102, so as to cancel noise interference in the second combined signal. Therefore, the other input terminal of the second canceling module 103 is connected to the output terminal of the receiving link 104. After receiving the second combination signal output by the receiving link 104 and the second canceling signal output by the observation branch 102, the first The second cancellation module 103 generates and outputs a third combined signal for analyzing the uplink signal according to the acquired second combined signal and the second canceled signal.

接收链路104用于生成并输出第二合路信号。The receiving link 104 is used to generate and output the second combined signal.

接收链路104用于对经历第一级自干扰抵消形成的第一合路信号进行信号处理和调整，例如，低噪声放大、增益调整、下变频、模数转换等，以生成第二合路信号。因此，接收链路104的输入端与第一抵消模块105的输出端连接，在接收到第一抵消模块105输出的第一合路信号后，接收链路104生成并输出第二合路信号。The receiving chain 104 is used to perform signal processing and adjustment on the first combined signal formed by the first stage of self-interference cancellation, for example, low noise amplification, gain adjustment, down-conversion, analog-to-digital conversion, etc., to generate the second combined signal Signal. Therefore, the input terminal of the receiving link 104 is connected to the output terminal of the first canceling module 105, and after receiving the first combined signal output by the first canceling module 105, the receiving link 104 generates and outputs a second combined signal.

第一抵消模块105用于生成并输出第一合路信号。The first cancellation module 105 is used for generating and outputting a first combined signal.

第一抵消模块105用于根据接收到的第一抵消信号对上行基带信号进行第一级自干扰抵消，以生成第一合路信号。因此，第一抵消模块105的输入端与辅助支路106的输出端及天线107连接，在接收到辅助支路106输出的第一抵消信号和天线107输出的上行基带信号后，第一抵消模块105将第一抵消信号与获取到的上行基带信号进行合路，生成并输出第一合路信号。The first canceling module 105 is configured to perform first-stage self-interference cancellation on the uplink baseband signal according to the received first canceling signal, so as to generate a first combined signal. Therefore, the input terminal of the first canceling module 105 is connected with the output terminal of the auxiliary branch 106 and the antenna 107. After receiving the first canceling signal output by the auxiliary branch 106 and the uplink baseband signal output by the antenna 107, the first canceling module 105 Combine the first cancellation signal and the acquired uplink baseband signal to generate and output a first combined signal.

辅助支路106用于生成并输出第一抵消信号。The auxiliary branch 106 is used to generate and output the first cancellation signal.

辅助支路106用于对下行基带信号对上行信号的射频干扰分量进行提取，获取抵消下行基带信号造成的射频自干扰的第一抵消信号。因此，辅助支路106的输入端与接收链路104的输出端连接，辅助支路106根据获取到的下行基带信号和接收链路104输出的第二合路信号，生成第一抵消信号。The auxiliary branch 106 is used to extract the radio frequency interference component of the downlink baseband signal on the uplink signal, and obtain a first cancellation signal for canceling radio frequency self-interference caused by the downlink baseband signal. Therefore, the input end of the auxiliary branch 106 is connected to the output end of the receiving link 104 , and the auxiliary branch 106 generates a first cancellation signal according to the obtained downlink baseband signal and the second combined signal output by the receiving link 104 .

天线107用于发送下行信号和接收上行基带信号。The antenna 107 is used for sending downlink signals and receiving uplink baseband signals.

天线107用于将发射链路101输出的下行信号发送到下一节点，并接收从其余节点发送的上行基带信号，并将接收到的上行基带信号传输到第一抵消模块105。The antenna 107 is used to send the downlink signal output by the transmission link 101 to the next node, receive the uplink baseband signal sent from other nodes, and transmit the received uplink baseband signal to the first canceling module 105 .

通信收发器在同时同频或者同时近频地进行上行信号接收和下行信号发送时，发射链路101根据下行基带信号生成下行信号并将下行信号输出到天线107进行发送，并且通过天线107将在下行信号发送过程中接收到的上行基带信号传输到第一抵消模块105，第一抵消模块105利用由辅助支路106根据下行基带信号和第二合路信号生成的第一抵消信号，对上行基带信号进行第一级的射频自干扰抵消，然后将经过第一级自干扰抵消生成的第一合路信号输入到接收链路104，接收链路104对第一合路信号进行信号处理和转化后，生成第二合路信号，并将第二合路信号输出到第二抵消模块103和辅助支路 106，第二抵消模块103利用由观测支路102根据下行基带信号和下行信号生成的第二抵消信号，对第二合路信号进行第二级的噪声自干扰抵消，以生成用于解析出上行信号的第三合路信号。When the communication transceiver performs uplink signal reception and downlink signal transmission at the same frequency or close frequency at the same time, the transmit link 101 generates a downlink signal according to the downlink baseband signal and outputs the downlink signal to the antenna 107 for transmission, and the antenna 107 will transmit the downlink signal in the The uplink baseband signal received in the downlink signal transmission process is transmitted to the first canceling module 105, and the first canceling module 105 uses the first canceling signal generated by the auxiliary branch 106 according to the downlink baseband signal and the second combined signal to correct the uplink baseband signal. The signal is subjected to the first level of radio frequency self-interference cancellation, and then the first combined signal generated by the first level of self-interference cancellation is input to the receiving link 104, and the receiving link 104 performs signal processing and conversion on the first combined signal , generate the second combined signal, and output the second combined signal to the second canceling module 103 and the auxiliary branch 106, the second canceling module 103 uses the second signal generated by the observation branch 102 according to the downlink baseband signal and the downlink signal Canceling the signal, performing a second stage of noise self-interference cancellation on the second combined signal to generate a third combined signal for analyzing the uplink signal.

需要说明的是，下行基带信号的产生和调制可以是由通信收发器中的下行信号调制器完成，上行信号的获取可以通过通信收发器中的上行信号解调器完成，也可以直接外部获取下行基带信号和进行上行信号的解析和获取，本实施例对此不做限制。It should be noted that the generation and modulation of the downlink baseband signal can be completed by the downlink signal modulator in the communication transceiver, and the acquisition of the uplink signal can be completed by the uplink signal demodulator in the communication transceiver, or directly obtain the downlink signal externally. The baseband signal and the uplink signal are analyzed and acquired, which is not limited in this embodiment.

在一个例子中，通信收发器中的观测支路包括：噪声模型滤波器、观测链路和功分模块。功分模块的输入端和与观测支路对应的发射链路的输出端连接，功分模块的输出端与观测链路的输入端和天线连接，功分模块用于对下行信号进行功率分配，向观测链路和天线传输功率分配后的下行信号；观测链路的输出端与噪声模型滤波器的输入端连接，观测链路用于根据接收到的功率分配后的下行信号，生成并输出参考下行基带信号；噪声模型滤波器的输出端与第二抵消模块连接，噪声模型滤波器用于根据下行基带信号和参考下行基带信号，生成并输出第二抵消信号。天线用于发送功率分配后的下行信号。观测支路中的功分模块用于对发射链路输出的下行信号进行功率分配，分配部分功率作为观测链路的输入，剩余的传输到天线进行发送。通过功分模块的功率分配和观测链路对接收到的部分功率的下行信号进行增益调整、下变频、滤波、模数转换等操作后，将经过调整的功率分配后的下行信号传输到噪声模型滤波器。噪声模型滤波器根据接收到的经过调整的功率分配后的下行信号和下行基带信号，对天线发送的下行信号的噪声分量进行提取，生成抵消噪声自干扰的第二抵消信号。通过噪声模型滤波器准确的提取出噪声干扰并生成第二抵消信号，供第二抵消模块对噪声干扰进行准确抵消，提高通信收发器的自干扰抵消性能。In one example, the observation branch in the communication transceiver includes: a noise model filter, an observation link, and a power division module. The input end of the power division module is connected to the output end of the transmission link corresponding to the observation branch, the output end of the power division module is connected to the input end of the observation link and the antenna, and the power division module is used for power distribution of the downlink signal. The downlink signal after power allocation is transmitted to the observation link and the antenna; the output end of the observation link is connected to the input end of the noise model filter, and the observation link is used to generate and output the reference signal according to the received downlink signal after power allocation. Downlink baseband signal; the output end of the noise model filter is connected to the second cancellation module, and the noise model filter is used to generate and output the second cancellation signal according to the downlink baseband signal and the reference downlink baseband signal. The antennas are used to transmit downlink signals after power allocation. The power division module in the observation branch is used to allocate power to the downlink signal output by the transmission link, allocate part of the power as the input of the observation link, and transmit the rest to the antenna for transmission. After performing gain adjustment, frequency down conversion, filtering, analog-to-digital conversion and other operations on the received downlink signal with partial power through the power distribution of the power division module and the observation link, the downlink signal after the adjusted power distribution is transmitted to the noise model filter. The noise model filter extracts the noise component of the downlink signal sent by the antenna according to the received downlink signal after the adjusted power allocation and the downlink baseband signal, and generates a second cancellation signal for canceling noise self-interference. The noise interference is accurately extracted through the noise model filter and a second cancellation signal is generated for the second cancellation module to accurately cancel the noise interference, thereby improving the self-interference cancellation performance of the communication transceiver.

在本公开中，功分模块、第一抵消模块、第二抵消模块均可以是功分器、合路器或者耦合器，本实施例对具体的选用不做限制。In the present disclosure, the power dividing module, the first canceling module, and the second canceling module may all be power dividers, combiners or couplers, and this embodiment does not limit the specific selection.

在另一个例子中，通信收发器中的辅助支路包括：信道模型滤波器和辅助链路；信道模型滤波器的输入端和与辅助支路对应的接收链路的输出端连接，信道模型滤波器的输出端与辅助链路的输入端连接，信道模型滤波器用于根据下行基带信号和第二合路信号生成数字基带信号；辅助链路的输出端和与辅助支路对应的第一抵消模块的输入端连接，辅助链路用于根据数字基带信号，生成并输出第一抵消信号。具体而言，辅助支路中的信道模型滤波器对接收链路输出的第二合路信号进行采集，根据下行基带信号和第二合路信号对天线发送的下行信号对上行信号的射频干扰进行提取，并生成抵消射频干扰的数字基带信号，然后将数字基带信号输出到辅助链路，辅助链路对数字基带信号进行数模转换、上变频、增益调整等操作后，生成并输出第一抵消信号。通过信道模型滤波器根据接收链路输出的第二合路信号和下行基带信号准确生成抵消射频干扰的数字基带信号，并通过辅助链路对数字基带信号进行信号处理得到第一抵消信号并将第一抵消信号发送至第一抵消模块，第一抵消模块对射频干扰进行准确抵消，提高通信收发器的自干扰抵消性能。In another example, the auxiliary branch in the communication transceiver includes: a channel model filter and an auxiliary link; the input end of the channel model filter is connected to the output end of the receiving link corresponding to the auxiliary branch, and the channel model filter The output end of the filter is connected to the input end of the auxiliary link, and the channel model filter is used to generate a digital baseband signal according to the downlink baseband signal and the second combined signal; the output end of the auxiliary link and the first offsetting module corresponding to the auxiliary branch The input terminal is connected, and the auxiliary link is used to generate and output the first cancellation signal according to the digital baseband signal. Specifically, the channel model filter in the auxiliary branch collects the second combined signal output by the receiving link, and performs radio frequency interference on the uplink signal from the downlink signal sent by the antenna according to the downlink baseband signal and the second combined signal. Extract and generate a digital baseband signal that cancels radio frequency interference, and then output the digital baseband signal to the auxiliary link. After the auxiliary link performs digital-to-analog conversion, up-conversion, and gain adjustment on the digital baseband signal, the first offset is generated and output Signal. Through the channel model filter, the digital baseband signal that cancels the radio frequency interference is accurately generated according to the second combined signal and the downlink baseband signal output by the receiving link, and the digital baseband signal is processed through the auxiliary link to obtain the first cancellation signal and the second. A cancellation signal is sent to the first cancellation module, and the first cancellation module accurately cancels the radio frequency interference to improve the self-interference cancellation performance of the communication transceiver.

例如，一种全双工通信收发器的结构示意图如图2所示，信号收发过程中，通信收发器的工作流程如下。For example, a schematic structural diagram of a full-duplex communication transceiver is shown in FIG. 2 . During the process of transmitting and receiving signals, the workflow of the communication transceiver is as follows.

下行信号调制器输出下行基带信号x[n]。The downlink signal modulator outputs the downlink baseband signal x[n].

发射链路对下行基带信号进行数模转换、上变频、滤波、增益调整、功率放大后生成并输出发射链路带通信号(即下行信号)s _TX(t)，s _TX(t)＝x _PA(t)+v _TX(t)，其中，x _PA(t)为根据下行基带信号生成的下行带通信号，v _TX(t)为发射链路噪声。 The transmit link performs digital-to-analog conversion, upconversion, filtering, gain adjustment, and power amplification on the downlink baseband signal to generate and output the transmit link band-pass signal (ie downlink signal) s _TX (t), s _TX (t) = x _PA (t)+v _TX (t), where x _PA (t) is the downlink band-pass signal generated according to the downlink baseband signal, and v _TX (t) is the transmit link noise.

发射链路输出发射链路带通信号后，发射链路带通信号s _TX(t)由功分模块进行功率分配，一部分功率被传输至发射天线，另一部分功率被传输至观测链路。传输至发射天线的信号称为发射带通信号

其功率与发射链路带通信号s _TX(t)近似相等，发射带通信号

由发射天线转换为电磁波进行辐射传输，传输过程中部分功率通过自干扰信道到达接收天线的输出端，形成自干扰带通信号S _TxL(t)，其中

为发射带通信号的自干扰分量，

为发射带通噪声的自干扰分量。 After the transmission link outputs the transmission link band-pass signal, the transmission link band-pass signal s _TX (t) is power distributed by the power division module, a part of the power is transmitted to the transmission antenna, and the other part of the power is transmitted to the observation link. The signal transmitted to the transmit antenna is called transmit bandpass signal

Its power is approximately equal to the transmit link band-pass signal s _TX (t), and the transmit band-pass signal

The transmitting antenna is converted into electromagnetic waves for radiative transmission. During the transmission process, part of the power reaches the output end of the receiving antenna through the self-interference channel, forming a self-interference bandpass signal S _TxL (t), where

is the self-interference component of the transmitted bandpass signal,

is the self-interference component of the transmitted bandpass noise.

接收天线同时接收上行带通信号u(t)和背景噪声v _ANT(t)，出现在接收天线输出端的接收带通信号y(t)可以表示为： The receiving antenna simultaneously receives the uplink bandpass signal u(t) and background noise v _ANT (t), and the receiving bandpass signal y(t) appearing at the output of the receiving antenna can be expressed as:

即，接收带通信号y(t)由自干扰带通信号S _TxL(t)、上行带通信号u(t)和背景噪声v _ANT(t)共同构成。 That is, the receive bandpass signal y(t) is composed of the self-interference bandpass signal S _TxL (t), the uplink bandpass signal u(t) and the background noise v _ANT (t).

接收天线输出的接收带通信号y(t)被传输到第一抵消模块，第一抵消模块的第一输入为接收带通信号y(t)，第二输入为辅助链路输出的辅助链路带通信号(第一抵消信号)x _AUX(t)： The receiving bandpass signal y(t) output by the receiving antenna is transmitted to the first canceling module, the first input of the first canceling module is the receiving bandpass signal y(t), and the second input is the auxiliary link output by the auxiliary link Bandpass signal (1st cancellation signal) x _AUX (t):

其中，

为信道模型滤波器及辅助链路对发射带通信号的自干扰分量

的反相估计，是第一级自干扰抵消带通信号，v _AUX(t)为辅助链路的总噪声。第一抵消模块对辅助链路输出的第一抵消信号和接收天线输出的接收带通信号y(t)进行合路，生成第一级自干扰抵消后的一级抵消残留带通信号(第一合路信号)e ₁(t)： in,

is the self-interference component of the channel model filter and the auxiliary link to the transmitted bandpass signal

The inverse estimate of is the first-stage self-interference cancellation bandpass signal, and v _AUX (t) is the total noise of the auxiliary link. The first cancellation module combines the first cancellation signal output by the auxiliary link with the reception bandpass signal y(t) output by the receiving antenna to generate a first-stage cancellation residual bandpass signal after the first-stage self-interference cancellation (first combined signal) e ₁ (t):

其中，

为信道模型滤波器的模型误差；ε ₁(t)＝v _AUX(t)+ε _AUX(t)为第一级抵消未建模(带通)误差。 in,

is the model error of the channel model filter; ε ₁ (t)=v _AUX (t)+ε _AUX (t) is the first-stage cancellation unmodeled (bandpass) error.

然后，一级抵消残留带通信号e ₁(t)被传输到接收链路，接收链路对一级抵消残留带通信号e ₁(t)进行低噪声放大、滤波调整、下变频、增益调整、模数转换等信号调整后，输出一级抵消残留基带信号(第二合路信号)p[n]： Then, the first-stage cancellation residual band-pass signal e ₁ (t) is transmitted to the receiving chain, and the receiving chain performs low-noise amplification, filter adjustment, down-conversion, and gain adjustment on the first-stage cancellation residual band-pass signal e ₁ (t) , analog-to-digital conversion and other signal adjustments, output a first-level offset residual baseband signal (second combined signal) p[n]:

其中，e ₁[n]为一级抵消残留基带信号，v _RX[n]为接收链路的噪声，数字基带

u[n]、v _ANT[n]、v _RX[n]和ε ₁[n]分别是射频带通信号

u(t)、v _ANT(t)、v _RX(t)和ε ₁(t)的基带等效副本，并将一级抵消残留基带信号p[n]被传输到信道模型滤波器的第一输入端和第二抵消模块的第一输入端。 Among them, e ₁ [n] is the first-order cancellation residual baseband signal, v _RX [n] is the noise of the receiving chain, and the digital baseband

u[n], v _ANT [n], v _RX [n], and ε ₁ [n] are RF bandpass signals, respectively

The baseband equivalent copies of u(t), v _ANT (t), v _RX (t) and ε ₁ (t), and the one-stage cancellation residual baseband signal p[n] is transmitted to the first channel model filter input terminal and the first input terminal of the second offsetting module.

信道模型滤波器的第一输入是一级抵消残留基带信号p[n]，信道模型滤波器的第二输入是下行基带信号x[n]，信道模型滤波器的输出是第一级自干扰抵消基带信号(数字基带信号)

辅助链路对第一级自干扰抵消基带信号

进行数模转换、上变频、增益调整后输出辅助链路带通信号(第一抵消信号)x _AUX(t)。 The first input of the channel model filter is the first-stage cancellation residual baseband signal p[n], the second input of the channel model filter is the downlink baseband signal x[n], and the output of the channel model filter is the first-stage self-interference cancellation Baseband signal (digital baseband signal)

Auxiliary link to first-stage self-interference cancellation baseband signal

After performing digital-to-analog conversion, up-conversion, and gain adjustment, an auxiliary link band-pass signal (first cancellation signal) x _AUX (t) is output.

发射链路带通信号s _TX(t)的另外一部分功率被传输至观测链路，则观测链路带通信号s _OBS(t)可以表示为 Another part of the power of the transmission link bandpass signal s _TX (t) is transmitted to the observation link, then the observation link bandpass signal s _OBS (t) can be expressed as

s _OBS(t)＝β·x _PA(t)+β·v _TX(t) s _OBS (t) = β x _PA (t) + β v _TX (t)

其中，β为耦合系数，观测链路带通信号经过增益调整、下变频、滤波、模数转换输出观测链路基带信号s _OBS[n]： Among them, β is the coupling coefficient, and the bandpass signal of the observation link is adjusted by gain, frequency down-conversion, filtering, and analog-to-digital conversion to output the baseband signal of the observation link s _OBS [n]:

s _OBS[n]＝β _DIG·x _PA[n]+β _DIG·v _TX[n]+v _OBS[n] s _OBS [n]=β _DIG x _PA [n]+β _DIG v _TX [n]+v _OBS [n]

其中，β _DIG为正比于β的数字增益，x _PA[n]为下行基带信号x[n]的线性或非线性映射；v _TX[n]为发射链路噪声，v _OBS[n]为观测链路总噪声。 Among them, β _DIG is the digital gain proportional to β, x _PA [n] is the linear or nonlinear mapping of the downlink baseband signal x[n]; v _TX [n] is the transmit link noise, v _OBS [n] is the observed Total link noise.

噪声模型滤波器的第一输入是下行基带信号x[n]，噪声模型滤波器的第二输入是观测链路基带信号s _OBS[n]，噪声模型滤波器的输出为发射链路噪声估计(第二抵消信号)

The first input of the noise model filter is the downlink baseband signal x[n], the second input of the noise model filter is the observed link baseband signal s _OBS [n], and the output of the noise model filter is the transmit link noise estimate ( second offset signal)

其中，ε _OBS[n]为噪声模型滤波器的模型误差。在生成发射链路噪声估计(第二抵消信号)

后，噪声模型滤波器将发射链路噪声估计

输出到数字域抵消器(第二抵消模块)。 where _εOBS [n] is the model error of the noise model filter. When generating the transmit link noise estimate (second canceling signal)

After that, the noise model filter will transmit the link noise estimate

Output to the digital domain canceller (the second cancellation module).

数字域抵消器的第一输入为第一级抵消残留基带信号p[n]，数字域抵消器的第二输入为发射链路噪声估计

数字域抵消器使用发射链路噪声估计

拟合发射带通噪声的自干扰分量的基带副本

The first input of the digital domain canceller is the first-stage cancellation residual baseband signal p[n], and the second input of the digital domain canceller is the transmit link noise estimate

The digital domain canceller uses transmit chain noise estimation

Fitting a baseband replica of the self-interference component of the transmit bandpass noise

第二抵消模块生成并输出二级抵消残留基带信号(第三合路信号)e ₂[n]： The second cancellation module generates and outputs the secondary cancellation residual baseband signal (third combined signal) e ₂ [n]:

其中，

为第二级抵消未建模误差，v _total[n]＝v _ANT[n]+v _RX[n]为接收链路总噪声，ε _total[n]＝ε ₁[n]+ε ₂[n]为两级自干扰抵消引入的未建模总误差。 in,

To offset the unmodeled error for the second stage, v _total [n] = v _ANT [n] + v _RX [n] is the total noise of the receiving link, ε _total [n] = ε ₁ [n] + ε ₂ [n ] is the unmodeled total error introduced by the two-stage self-interference cancellation.

通过两级自干扰抵消后的二级抵消残留基带信号e ₂[n]的信干噪比为 The signal-to-interference-noise ratio of the residual baseband signal e ₂ [n] after two-stage self-interference cancellation is

其中，处理噪声的功率E(|ε _total[n]| ²)越小，SINR损失越少。当两级自干扰抵消引入的未建模总误差功率小于接收链路总噪声时，即E(|ε _total[n]| ²)≤E(|v _total[n]| ²)，则两级自干扰抵消引入的接收灵敏度损失小于等于3dB。 Wherein, the smaller the noise processing power E(|ε _total [n]| ² ), the smaller the SINR loss. When the unmodeled total error power introduced by the two-stage self-interference cancellation is less than the total noise of the receiving link, that is, E(|ε _total [n]| ² )≤E(|v _total [n]| ² ), then the two-stage The loss of receiving sensitivity introduced by interference cancellation is less than or equal to 3dB.

另外，辅助支路和观测支路自身噪声的引入还可以通过提高数模转化器和模数转换器的动态范围进行一定的优化和减少，以达到更好的信号传输效果。In addition, the introduction of the auxiliary branch and the observation branch's own noise can also be optimized and reduced by increasing the dynamic range of the digital-to-analog converter and the analog-to-digital converter, so as to achieve a better signal transmission effect.

在另一个例子中，通信收发器还包括：至少一个发射模型滤波器，发射模型滤波器的输出端和与发射模型对应的发射链路的输入端连接，用于对下行基带信号进行非线性失真校正。具体而言，可以在通信收发器的每一个发射链路的前端，增加一个发射模型滤波器，发射模型滤波器通过建立发射链路非线性逆模型，用于校正输入到发射链路的下行基带信号的非线性失真，提升发射信号的线性度，缓解接收链路引入的非线性干扰分量。In another example, the communication transceiver further includes: at least one transmission model filter, the output end of the transmission model filter is connected to the input end of the transmission link corresponding to the transmission model, and is used to perform nonlinear distortion on the downlink baseband signal Correction. Specifically, a transmission model filter can be added at the front end of each transmission link of the communication transceiver. The transmission model filter is used to correct the downlink baseband input to the transmission link by establishing a nonlinear inverse model of the transmission link. The nonlinear distortion of the signal improves the linearity of the transmitted signal and alleviates the nonlinear interference component introduced by the receiving link.

图3是根据本公开的实施例的通信收发器的结构示意图。Fig. 3 is a schematic structural diagram of a communication transceiver according to an embodiment of the present disclosure.

参考图3，通信收发器包括多个发射链路、数量与发射链路相同的若干个观测支路、多个接收链路、数量与接收链路相同的若干个辅助支路、第一抵消模块和第二抵消模块。Referring to Fig. 3, the communication transceiver includes multiple transmission links, several observation branches with the same number as the transmission links, multiple reception links, several auxiliary branches with the same number as the reception links, and a first cancellation module and a second offset module.

通信收发器每一个模块间的连接方式和只有一路发射链路、接收链路(即图1)时大致相同，不同之处在于所有观测支路的输出均与每一个第二抵消模块连接，每个第二抵消模块根据所有发射链路分别对应的多个第二抵消信号对与第二抵消模块对应的接收链路输出的第二合成信号进行二次自干扰抵消生成第三合路信号；每一个辅助支路进行第一抵消信号生成的时候，根据每一个发射链路生成下行信号的多个下行基带信号和与辅助支路对应的接收链路输出的第二合路信号生成第一抵消信号，并输出到与辅助支路对应的第一抵消模块。The connection mode between each module of the communication transceiver is roughly the same as when there is only one transmission link and reception link (that is, Figure 1), the difference is that the outputs of all observation branches are connected to each second offsetting module, and each A second canceling module performs secondary self-interference cancellation on the second composite signal output by the receiving chain corresponding to the second canceling module according to a plurality of second canceling signals respectively corresponding to all transmitting links to generate a third combined signal; When an auxiliary branch generates the first canceling signal, the first canceling signal is generated according to the multiple downlink baseband signals generated by each transmitting link and the second combined signal output by the receiving link corresponding to the auxiliary branch , and output to the first cancellation module corresponding to the auxiliary branch.

在一个例子中，通信收发器中发射链路和观测支路均为m个，接收链路、辅助支路、第一抵消模块和第二抵消模块均为n个，其中，m和n均为正整数；每一个辅助支路用于根据n个下行基带信号和与辅助支路对应的接收链路输出的第二合路信号，生成并输出第一抵消信号；每一个第二抵消模块用于根据n个第二抵消信号，和与第二抵消模块对应的接收链路输出的第二合路信号，生成并输出第三合路信号。通过为每个发射链路配置对应的观测支路、为每个接收链路配置对应的辅助支路、第一抵消模块和第二抵消模块，使得在MIMO场景下通信收发器不需要增加过多设备，并且自干扰抵消***具有较好的稳定性和抵消性能。In one example, there are m transmitting links and observation branches in the communication transceiver, and there are n receiving links, auxiliary branches, first canceling modules and second canceling modules, where m and n are both A positive integer; each auxiliary branch is used to generate and output a first cancellation signal according to the n downlink baseband signals and the second combination signal output by the receiving link corresponding to the auxiliary branch; each second cancellation module is used for Generate and output a third combined signal according to the n second canceling signals and the second combined signal output by the receiving link corresponding to the second canceling module. By configuring the corresponding observation branch for each transmit link, configuring the corresponding auxiliary branch, the first cancellation module and the second cancellation module for each reception link, the communication transceiver does not need to be increased too much in the MIMO scenario equipment, and the self-interference cancellation system has better stability and cancellation performance.

通信收发器在进行信号收发的过程中，对每一路上行信号进行第一级自干扰抵消的时候，利用根据m个下行基带信号和当前链路中的第二合成信号生成的第一抵消信号与上行基带信号进行合成生成第一合路信号；在进行第二级自干扰抵消的时候，每个第二抵消模块根据n个观测支路计算并输出的与其对应的发射链路噪声估计，完成与自身对应的接收链路输出的第二合路信号的第二级自干扰抵消，生成第三合路信号。In the process of transmitting and receiving signals, when the communication transceiver performs the first-level self-interference cancellation on each uplink signal, it uses the first cancellation signal generated according to the m downlink baseband signals and the second composite signal in the current link Synthesize with the uplink baseband signal to generate the first combined signal; when performing the second-level self-interference cancellation, each second cancellation module calculates and outputs the corresponding transmission link noise estimate based on n observation branches, and completes The second-stage self-interference cancellation of the second combined signal output by the receiving link corresponding to itself generates a third combined signal.

另外，通信收发器收发上下行信号可以是通过天线进行的，天线可以是由两种天线配置形成：收发分离天线和环形器收发共天线。在收发分离天线配置中，自干扰包含整机泄漏、近场辐射、多路径反射等；在环形器收发共天线配置中，自干扰包含整机泄漏、环形器反射、多路径反射等。本实施例对选择的天线及天线的具体配置不做限制。In addition, the communication transceiver can transmit and receive uplink and downlink signals through an antenna, and the antenna can be formed by two antenna configurations: a separate transmitting and receiving antenna and a circulator transmitting and receiving common antenna. In the configuration of separate transmitting and receiving antennas, self-interference includes the leakage of the whole machine, near-field radiation, multipath reflection, etc. This embodiment does not limit the selected antenna and the specific configuration of the antenna.

为了进一步提高通信收发器的信号质量，还可以在每个发射链路前设置一个发射模型滤波模块，对发射链路的非线性失真进行进一步的优化，避免引入非线性失真的干扰。In order to further improve the signal quality of the communication transceiver, a transmission model filter module can also be set before each transmission link to further optimize the nonlinear distortion of the transmission link and avoid the introduction of nonlinear distortion interference.

本公开实施例中提供的通信收发器可以是一种无线收发信机，可用于无线通信网络中的任何双工通信收发节点，也可用于双工无线通信终端。例如，基站与终端之间的通信，基站与基站之间的通信等。上述通信收发器的信息交换，更确切地说信号发射与接收能够在同一时隙、同一频段上进行，通信收发器至少可用于以下两种工作模式，灵活满足不同的时隙、频率资源划分所规划的各种业务场景，一个是当发射频段与接收频段相互重合，称为带内全双工模式；一个是当发射频段与接收频段相邻或相近，称为子带全双工模式。The communication transceiver provided in the embodiments of the present disclosure may be a wireless transceiver, which may be used in any duplex communication transceiver node in a wireless communication network, and may also be used in a duplex wireless communication terminal. For example, communication between a base station and a terminal, communication between a base station and a base station, and the like. The information exchange of the above-mentioned communication transceivers, more precisely, the signal transmission and reception can be carried out in the same time slot and the same frequency band. The communication transceivers can be used in at least the following two working modes, which can flexibly meet the requirements of different time slots and frequency resource divisions. Various business scenarios are planned, one is when the transmission frequency band and the reception frequency band overlap each other, which is called the in-band full-duplex mode; the other is when the transmission frequency band and the reception frequency band are adjacent or similar, which is called the sub-band full-duplex mode.

图4是根据本公开的实施例的信号收发方法流程图，该信号收发方法应用于通信收发器，参考图4，该信号收发方法包括步骤401至404。FIG. 4 is a flowchart of a signal transceiving method according to an embodiment of the present disclosure. The signal transceiving method is applied to a communication transceiver. Referring to FIG. 4 , the signal transceiving method includes steps 401 to 404 .

在步骤401，根据下行基带信号生成并发送下行信号。In step 401, a downlink signal is generated and sent according to the downlink baseband signal.

通信收发器中的发射链路根据接收到的下行基带信号，对下行基带信号进行行数模转换、上变频、滤波、增益调整和功率放大等处理，以生成并输出下行信号，通过天线将下行信号发送到下一节点。The transmission link in the communication transceiver performs digital-to-analog conversion, up-conversion, filtering, gain adjustment, and power amplification on the downlink baseband signal according to the received downlink baseband signal, so as to generate and output the downlink signal, and transmit the downlink signal through the antenna. The signal is sent to the next node.

发射链路可以是一个或者多个。There can be one or more transmit chains.

在一个例子中，通信收发器在根据下行基带信号生成并发送下行信号前，还包括：对下行基带信号进行非线性失真校正。根据下行基带信号生成并发送下行信号的步骤包括：根据进行非线性失真校正后的下行基带信号生成并发送下行信号。In an example, before the communication transceiver generates and transmits the downlink signal according to the downlink baseband signal, it further includes: performing nonlinear distortion correction on the downlink baseband signal. The step of generating and sending the downlink signal according to the downlink baseband signal includes: generating and sending the downlink signal according to the downlink baseband signal after nonlinear distortion correction.

在步骤402，根据下行基带信号生成第一抵消信号，并根据下行基带信号的噪声信号生成第二抵消信号。In step 402, a first cancellation signal is generated according to the downlink baseband signal, and a second cancellation signal is generated according to a noise signal of the downlink baseband signal.

通信收发器通过辅助支路根据下行基带信号，生成抵消下行信号对上行信号造成的射频干扰的第一抵消信号。通信收发器通过观测支路根据下行基带信号，生成抵消下行信号的噪声信号对上行信号造成的噪声干扰的第二抵消信号。The communication transceiver generates a first cancellation signal for canceling radio frequency interference caused by the downlink signal to the uplink signal through the auxiliary branch according to the downlink baseband signal. The communication transceiver generates a second cancellation signal for canceling noise interference caused by the noise signal of the downlink signal to the uplink signal through the observation branch according to the downlink baseband signal.

通信收发器根据下行基带信号生成第一抵消信号，并根据下行基带信号的噪声信号生成第二抵消信号的步骤包括：根据下行基带信号和上行合路信号生成第一抵消信号，其中，上行合路信号根据利用第一抵消信号进行干扰抵消后的上行基带信号生成；根据下行基带信号和功率分配后的下行信号，生成第二抵消信号。具体而言，通信收发器通过辅助支路根据下行基带信号，和与辅助支路对应的接收链路输出的上行合路信号生成第一抵消信号；通过观测支路根据与观测支路对应的发射链路的下行基带信号和功率分配后的下行信号，生成第二抵消信号。The communication transceiver generates the first cancellation signal according to the downlink baseband signal, and the step of generating the second cancellation signal according to the noise signal of the downlink baseband signal includes: generating the first cancellation signal according to the downlink baseband signal and the uplink combined signal, wherein the uplink combined signal The signal is generated according to the uplink baseband signal after interference cancellation by using the first cancellation signal; and the second cancellation signal is generated according to the downlink baseband signal and the downlink signal after power allocation. Specifically, the communication transceiver generates the first cancellation signal through the auxiliary branch according to the downlink baseband signal and the uplink combined signal output by the receiving link corresponding to the auxiliary branch; The downlink baseband signal of the link and the downlink signal after the power allocation are used to generate a second cancellation signal.

在步骤403，根据第一抵消信号和第二抵消信号，对发送下行信号过程中接收到的上行基带信号进行两级干扰抵消。In step 403, two-stage interference cancellation is performed on the uplink baseband signal received in the process of sending the downlink signal according to the first cancellation signal and the second cancellation signal.

通信收发器通过第一抵消模块，对获取到的第一抵消信号和发送下行信号过程中接收到的上行基带信号进行合路，抵消下行信号对上行信号的射频干扰，生成第一合路信号；然后对第一合路信号进行低噪声放大、增益调整、下变频、模数转换等处理，生成第二合路信号；再通过第二抵消模块，对获取到的第二抵消信号和第二合路信号进行合路，抵消下行信号的噪声信号对上行信号的噪声干扰，完成两级干扰抵消，生成第三合路信号。The communication transceiver combines the acquired first cancellation signal with the uplink baseband signal received in the process of sending the downlink signal through the first cancellation module, cancels the radio frequency interference of the downlink signal to the uplink signal, and generates the first combined signal; Then perform low-noise amplification, gain adjustment, down-conversion, analog-to-digital conversion and other processing on the first combined signal to generate a second combined signal; Combine the signals of the two channels to cancel the noise interference of the noise signal of the downlink signal on the uplink signal, complete the two-stage interference cancellation, and generate the third combined signal.

在步骤404，解析经过两级干扰抵消后的上行基带信号(即第三合路信号)，获取上行信号。In step 404, the uplink baseband signal (that is, the third combined signal) after the two-stage interference cancellation is analyzed to obtain the uplink signal.

通信收发器对上行基带信号完成两级干扰抵消后，可以通过上行信号解调器对第三合路信号进行解析，获取上行信号。After the communication transceiver completes the two-level interference cancellation for the uplink baseband signal, the uplink signal demodulator can analyze the third combined signal to obtain the uplink signal.

此外，应当理解的是，上面各种方法的步骤划分，只是为了描述清楚，实现时可以合并为一个步骤或者对某些步骤进行拆分，分解为多个步骤，只要包括相同的逻辑关系，都在本专利的保护范围内；对算法中或者流程中添加无关紧要的修改或者引入无关紧要的设计，但不改变其算法和流程的核心设计都在该专利的保护范围内。In addition, it should be understood that the division of steps in the above methods is only for clarity of description, and may be combined into one step or split into multiple steps during implementation. As long as the same logical relationship is included, all Within the scope of protection of this patent; adding insignificant modifications or introducing insignificant designs to the algorithm or process, but not changing the core design of the algorithm and process are all within the scope of protection of the patent.

该信号收发方法是与上述通信收发器对应的方法实施例，该信号收发方法可与上述通信收发器互相配合实施。上述通信收发器中提到的相关技术细节在本实施例中依然有效，为了减少重复，这里不再赘述。相应地，本实施例中提到的相关技术细节也可应用在装置实施例中。The signal transceiving method is a method embodiment corresponding to the above-mentioned communication transceiver, and the signal transceiving method can be implemented in cooperation with the above-mentioned communication transceiver. The relevant technical details mentioned above in the communication transceiver are still valid in this embodiment, and will not be repeated here in order to reduce repetition. Correspondingly, the relevant technical details mentioned in this embodiment can also be applied in the device embodiment.

参考图5，该电子设备包括：至少一个处理器501；以及与至少一个处理器501通信连接的存储器502。存储器502存储有可被至少一个处理器501执行的指令，指令在被至少一个处理器501执行时，使至少一个处理器501能够执行上述任一方法实施例所描述的信号收发方法。Referring to FIG. 5 , the electronic device includes: at least one processor 501 ; and a memory 502 communicatively connected to the at least one processor 501 . The memory 502 stores instructions executable by the at least one processor 501. When the instructions are executed by the at least one processor 501, the at least one processor 501 can execute the signal transceiving method described in any method embodiment above.

存储器502和处理器501采用总线方式连接，总线可以包括任意数量的互联的总线和桥，总线将一个或多个处理器501和存储器502的各种电路连接在一起。总线还可以将诸如***设备、稳压器和功率管理电路等之类的各种其他电路连接在一起，这些都是本领域所公知的，因此，本文不再对其进行进一步描述。总线接口在总线和收发机之间提供接口。收发机可以是一个元件，也可以是多个元件，比如多个接收器和发送器，提供用于在传输介质上与各种其他装置通信的单元。经处理器501处理的数据通过天线在无线介质上进行传输，进一步，天线还接收数据并将数据传输给处理器501。The memory 502 and the processor 501 are connected by a bus. The bus may include any number of interconnected buses and bridges. The bus connects one or more processors 501 and various circuits of the memory 502 together. The bus may also connect together various other circuits such as peripherals, voltage regulators, and power management circuits, all of which are well known in the art and therefore will not be further described herein. The bus interface provides an interface between the bus and the transceivers. A transceiver may be a single element or multiple elements, such as multiple receivers and transmitters, providing means for communicating with various other devices over a transmission medium. The data processed by the processor 501 is transmitted on the wireless medium through the antenna, and further, the antenna also receives the data and transmits the data to the processor 501 .

处理器501负责管理总线和通常的处理，还可以提供各种功能，包括定时，***接口，电压调节、电源管理以及其他控制功能。而存储器502可以被用于存储处理器501在执行操作时所使用的数据。 Processor 501 is responsible for managing the bus and general processing, and may also provide various functions including timing, peripheral interface, voltage regulation, power management and other control functions. And the memory 502 may be used to store data used by the processor 501 when performing operations.

本公开还提供了一种计算机可读存储介质，该计算机可读存储介质存储有计算机程序。该计算机程序被处理器执行时实现上述信号收发方法。The present disclosure also provides a computer-readable storage medium storing a computer program. When the computer program is executed by the processor, the above signal transceiving method is realized.

本领域技术人员可以理解，实现上述方法中的全部或部分步骤是可以通过程序来指令相关的硬件来完成，该程序存储在一个存储介质中，包括若干指令用以使得一个设备(可以是单片机，芯片等)或处理器(processor)执行本公开各个实施例所述方法的全部或部分步骤。而前述的存储介质包括：U盘、移动硬盘、只读存储器(ROM，Read-Only Memory)、随机存取存储器(RAM，Random Access Memory)、磁碟或者光盘等各种可以存储程序代码的介质。Those skilled in the art will understand that all or part of the steps in the above method can be implemented by instructing related hardware through a program. The program is stored in a storage medium and includes several instructions to make a device (which can be a single-chip microcomputer, chips, etc.) or a processor (processor) to execute all or part of the steps of the methods described in the various embodiments of the present disclosure. The aforementioned storage media include: U disk, mobile hard disk, read-only memory (ROM, Read-Only Memory), random access memory (RAM, Random Access Memory), magnetic disk or optical disc, etc., which can store program codes. .

本领域的普通技术人员可以理解，上述各实施例是实现本公开的具体实施例，而在实际应用中，可以在形式上和细节上对其作各种改变，而不偏离本公开的精神和范围。Those skilled in the art can understand that the above-mentioned embodiments are specific embodiments for realizing the present disclosure, and in practical applications, various changes can be made in form and details without departing from the spirit and spirit of the present disclosure. scope.

Claims

一种通信收发器，包括：至少一个发射链路、至少一个观测支路、至少一个接收链路、至少一个辅助支路、至少一个第一抵消模块、至少一个第二抵消模块、和天线，其中A communication transceiver comprising: at least one transmit link, at least one observation branch, at least one receive link, at least one auxiliary branch, at least one first cancellation module, at least one second cancellation module, and an antenna, wherein

所述至少一个发射链路的数量与所述至少一个观测支路的数量相同，并且所述至少一个接收链路的数量、所述至少一个辅助支路的数量、所述至少一个第一抵消模块的数量和所述至少一个第二抵消模块的数量彼此相同，The number of the at least one transmission chain is the same as the number of the at least one observation branch, and the number of the at least one reception chain, the number of the at least one auxiliary branch, the at least one first offsetting module The number and the number of the at least one second offset module are the same as each other,

所述至少一个发射链路中的每一个的输出端和所述至少一个观测支路中的与该发射链路对应的观测支路的输入端及所述天线连接，所述至少一个发射链路中的每一个被配置为根据下行基带信号生成并输出下行信号，The output end of each of the at least one transmission chain is connected to the input end of the observation branch corresponding to the transmission chain in the at least one observation branch and the antenna, and the at least one transmission chain Each of them is configured to generate and output a downlink signal according to a downlink baseband signal,

所述至少一个观测支路中的所有观测支路的输出端均和所述至少一个第二抵消模块中的每一个的输入端连接，所述至少一个观测支路中的每一个被配置为根据所述下行基带信号和所述下行信号生成并输出第二抵消信号，The output ends of all the observation branches in the at least one observation branch are connected to the input ends of each of the at least one second cancellation module, and each of the at least one observation branches is configured according to The downlink baseband signal and the downlink signal generate and output a second cancellation signal,

所述至少一个第二抵消模块中的每一个的另一输入端和所述至少一个接收链路中的与该第二抵消模块对应的接收链路的输出端连接，所述至少一个第二抵消模块中的每一个被配置为根据获取到的第二合路信号和所述第二抵消信号，生成并输出用于解析出上行信号的第三合路信号，The other input terminal of each of the at least one second canceling module is connected to the output terminal of the receiving chain corresponding to the second canceling module in the at least one receiving chain, and the at least one second canceling module Each of the modules is configured to generate and output a third combined signal for parsing out the uplink signal according to the obtained second combined signal and the second canceled signal,

所述至少一个接收链路中的每一个的输入端和所述至少一个抵消模块中的与该接收链路对应的第一抵消模块的输出端连接，所述至少一个接收链路中的每一个被配置为根据获取到的第一合路信号，生成并输出所述第二合路信号，The input of each of the at least one receiving chain is connected to the output of the first canceling module corresponding to the receiving chain in the at least one canceling module, and each of the at least one receiving chain configured to generate and output the second combined signal according to the acquired first combined signal,

所述至少一个第一抵消模块中的每一个的输入端和所述至少一个辅助支路中的与该第一抵消模块对应的辅助支路的输出端及所述天线连接，所述至少一个第一抵消模块中的每一个被配置为根据获取到的第一抵消信号和上行基带信号，生成并输出所述第一合路信号，The input end of each of the at least one first canceling module is connected to the output end of the auxiliary branch corresponding to the first canceling module in the at least one auxiliary branch and the antenna, and the at least one first Each of a cancellation module is configured to generate and output the first combined signal according to the acquired first cancellation signal and the uplink baseband signal,

所述至少一个辅助支路中的每一个的输入端和所述至少一个接收链路中的与该辅助支路对应的接收链路的输出端连接，所述至少一个辅助支路中的每一个被配置为根据所述下行基带信号和所述第二合路信号生成并输出所述第一抵消信号，并且The input end of each of the at least one auxiliary branch is connected to the output end of the receiving chain corresponding to the auxiliary branch in the at least one receiving chain, and each of the at least one auxiliary branch configured to generate and output the first cancellation signal according to the downlink baseband signal and the second combined signal, and

所述天线被配置为发送所述下行信号，并接收所述上行基带信号。The antenna is configured to send the downlink signal and receive the uplink baseband signal.
根据权利要求1所述的通信收发器，其中，所述至少一个观测支路中的每一个包括：噪声模型滤波器、观测链路和功分模块，The communication transceiver according to claim 1, wherein each of said at least one observation branch comprises: a noise model filter, an observation link, and a power division module,

所述功分模块的输入端和与该观测支路对应的发射链路的输出端连接，所述功分模块的输出端与所述观测链路的输入端和所述天线连接，所述观测链路的输出端与所述噪声模型滤波器的输入端连接，所述噪声模型滤波器的输出端和与该观测支路对应的第二抵消模块的输入端连接，The input end of the power division module is connected to the output end of the transmission link corresponding to the observation branch, the output end of the power division module is connected to the input end of the observation link and the antenna, and the observation The output end of the link is connected to the input end of the noise model filter, and the output end of the noise model filter is connected to the input end of the second cancellation module corresponding to the observation branch,

所述功分模块被配置为对所述下行信号进行功率分配，向所述观测链路和所述天线传输功率分配后的下行信号，The power division module is configured to perform power allocation on the downlink signal, and transmit the power allocated downlink signal to the observation link and the antenna,

所述观测链路被配置为根据接收到的功率分配后的下行信号，生成并输出参考下行基带信号，The observation link is configured to generate and output a reference downlink baseband signal according to the received downlink signal after power allocation,

所述噪声模型滤波器被配置为根据所述下行基带信号和所述参考下行基带信号，生成并输出所述第二抵消信号，并且The noise model filter is configured to generate and output the second cancellation signal according to the downlink baseband signal and the reference downlink baseband signal, and

所述天线被配置为发送功率分配后的下行信号。The antenna is configured to transmit a downlink signal after power allocation.
根据权利要求1所述的通信收发器，其中，所述至少一个辅助支路中的每一个包括：信道模型滤波器和辅助链路，The communication transceiver of claim 1, wherein each of said at least one auxiliary branch comprises: a channel model filter and an auxiliary link,

所述信道模型滤波器的输入端和与该辅助支路对应的接收链路的输出端连接，所述信道模型滤波器的输出端与所述辅助链路的输入端连接，所述辅助链路的输出端和与该辅助支路对应的第一抵消模块的输入端连接，The input end of the channel model filter is connected to the output end of the receiving link corresponding to the auxiliary branch, the output end of the channel model filter is connected to the input end of the auxiliary link, and the auxiliary link The output terminal of is connected with the input terminal of the first offsetting module corresponding to the auxiliary branch,

所属信道模型滤波器被配置为根据所述下行基带信号和所述第二合路信号生成数字基带信号，并且The associated channel model filter is configured to generate a digital baseband signal according to the downlink baseband signal and the second combined signal, and

所述辅助链路被配置为根据所述数字基带信号，生成并输出所述第一抵消信号。The auxiliary link is configured to generate and output the first cancellation signal according to the digital baseband signal.
根据权利要求1所述的通信收发器，其中，所述至少一个发射链路和所述至少一个观测支路均为m个，所述至少一个接收链路、所述至少一个辅助支路、所述至少一个第一抵消模块和所述至少一个第二抵消模块均为n个，m和n均为正整数，The communication transceiver according to claim 1, wherein, the at least one transmitting link and the at least one observation branch are m, the at least one receiving link, the at least one auxiliary branch, the Both the at least one first offsetting module and the at least one second offsetting module are n, and both m and n are positive integers,

所述至少一个辅助支路中的每一个被配置为根据n个所述下行基带信号和与该辅助支路对应的接收链路输出的第二合路信号，生成并输出所述第一抵消信号，并且Each of the at least one auxiliary branch is configured to generate and output the first cancellation signal according to the n downlink baseband signals and the second combined signal output by the receiving link corresponding to the auxiliary branch ,and

所述至少一个第二抵消模块中的每一个被配置为根据n个所述第二抵消信号，和与该第二抵消模块对应的接收链路输出的第二合路信号，生成并输出所述第三合路信号。Each of said at least one second cancellation module is configured to generate and output said The third combination signal.
根据权利要求1至4中任一项所述的通信收发器，还包括：至少一个发射模型滤波器；A communication transceiver according to any one of claims 1 to 4, further comprising: at least one transmit model filter;

所述至少一个发射模型滤波器中的每一个的输出端和所述至少一个发射链路中的与该发射模型对应的发射链路的输入端连接，所述至少一个发射模型滤波器中的每一个被配置为对所述下行基带信号进行非线性失真校正。The output end of each of the at least one transmission model filter is connected to the input end of the transmission chain corresponding to the transmission model in the at least one transmission chain, and each of the at least one transmission model filter One is configured to perform nonlinear distortion correction on the downlink baseband signal.
一种信号收发方法，包括：A signal transceiving method, comprising:

根据下行基带信号生成并发送下行信号；Generate and send a downlink signal according to the downlink baseband signal;

根据所述下行基带信号生成第一抵消信号，并根据所述下行基带信号的噪声信号生成第二抵消信号；generating a first cancellation signal according to the downlink baseband signal, and generating a second cancellation signal according to a noise signal of the downlink baseband signal;

根据所述第一抵消信号和所述第二抵消信号，对发送所述下行信号过程中接收到的上行基带信号进行两级干扰抵消；According to the first cancellation signal and the second cancellation signal, perform two-stage interference cancellation on the uplink baseband signal received during the process of sending the downlink signal;

解析经过所述两级干扰抵消后的上行基带信号，获取上行信号。The uplink baseband signal after the two-stage interference cancellation is analyzed to obtain the uplink signal.
根据权利要求6所述的信号收发方法，其中，根据所述下行基带信号生成所述第一抵消信号并根据所述下行基带信号的噪声信号生成所述第二抵消信号的步骤包括：The signal transceiving method according to claim 6, wherein the step of generating the first cancellation signal according to the downlink baseband signal and generating the second cancellation signal according to the noise signal of the downlink baseband signal comprises:

根据所述下行基带信号和上行合路信号生成所述第一抵消信号，其中，所述上行合路信号是根据利用所述第一抵消信号进行干扰抵消后的所述上行基带信号生成的；generating the first cancellation signal according to the downlink baseband signal and the uplink combination signal, wherein the uplink combination signal is generated according to the uplink baseband signal after interference cancellation is performed by using the first cancellation signal;

根据所述下行基带信号和功率分配后的下行信号，生成所述第二抵消信号。Generate the second cancellation signal according to the downlink baseband signal and the downlink signal after power allocation.
根据权利要求6或7所述的信号收发方法，其中，在所述根据所述下行基带信号生成并发送所述下行信号前，所述信号收发方法还包括：The signal transceiving method according to claim 6 or 7, wherein, before generating and sending the downlink signal according to the downlink baseband signal, the signal transceiving method further comprises:

对所述下行基带信号进行非线性失真校正，并且，performing nonlinear distortion correction on the downlink baseband signal, and,

其中，根据所述下行基带信号生成并发送所述下行信号的步骤包括：Wherein, the step of generating and sending the downlink signal according to the downlink baseband signal includes:

根据进行所述非线性失真校正后的下行基带信号生成并发送所述下行信号。generating and sending the downlink signal according to the downlink baseband signal after the nonlinear distortion correction has been performed.
一种电子设备，包括：An electronic device comprising:

至少一个处理器；以及，at least one processor; and,

与所述至少一个处理器通信连接的存储器，其中，a memory communicatively coupled to the at least one processor, wherein,

所述存储器存储有可被所述至少一个处理器执行的指令，所述指令被所述至少一个处理器执行时，使所述至少一个处理器执行如权利要求6至8中任意一项所述的信号收发方法。The memory stores instructions that can be executed by the at least one processor, and when the instructions are executed by the at least one processor, the at least one processor is executed as described in any one of claims 6 to 8. signal sending and receiving method.
一种非暂时性计算机可读存储介质，其存储有计算机程序，其中，所述计算机程序被处理器执行时实现权利要求6至8中任一项所述的信号收发方法。A non-transitory computer-readable storage medium storing a computer program, wherein when the computer program is executed by a processor, the signal transceiving method according to any one of claims 6 to 8 is realized.