WO2018157798A1 - Vector millimeter wave generation method and apparatus, and computer storage medium - Google Patents

Vector millimeter wave generation method and apparatus, and computer storage medium Download PDF

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Publication number
WO2018157798A1
WO2018157798A1 PCT/CN2018/077444 CN2018077444W WO2018157798A1 WO 2018157798 A1 WO2018157798 A1 WO 2018157798A1 CN 2018077444 W CN2018077444 W CN 2018077444W WO 2018157798 A1 WO2018157798 A1 WO 2018157798A1
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phase
signal
angle
millimeter wave
modulated
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PCT/CN2018/077444
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French (fr)
Chinese (zh)
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宗柏青
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中兴通讯股份有限公司
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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B10/00—Transmission systems employing electromagnetic waves other than radio-waves, e.g. infrared, visible or ultraviolet light, or employing corpuscular radiation, e.g. quantum communication
    • H04B10/50—Transmitters
    • H04B10/516—Details of coding or modulation
    • H04B10/548—Phase or frequency modulation
    • H04B10/556—Digital modulation, e.g. differential phase shift keying [DPSK] or frequency shift keying [FSK]
    • H04B10/5561—Digital phase modulation
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B10/00—Transmission systems employing electromagnetic waves other than radio-waves, e.g. infrared, visible or ultraviolet light, or employing corpuscular radiation, e.g. quantum communication
    • H04B10/50—Transmitters
    • H04B10/516—Details of coding or modulation
    • H04B10/548—Phase or frequency modulation
    • H04B10/556—Digital modulation, e.g. differential phase shift keying [DPSK] or frequency shift keying [FSK]
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L27/00—Modulated-carrier systems
    • H04L27/18—Phase-modulated carrier systems, i.e. using phase-shift keying
    • H04L27/20—Modulator circuits; Transmitter circuits
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L27/00—Modulated-carrier systems
    • H04L27/18—Phase-modulated carrier systems, i.e. using phase-shift keying
    • H04L27/20—Modulator circuits; Transmitter circuits
    • H04L27/2096—Arrangements for directly or externally modulating an optical carrier
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L27/00—Modulated-carrier systems
    • H04L27/32—Carrier systems characterised by combinations of two or more of the types covered by groups H04L27/02, H04L27/10, H04L27/18 or H04L27/26
    • H04L27/34—Amplitude- and phase-modulated carrier systems, e.g. quadrature-amplitude modulated carrier systems
    • H04L27/36—Modulator circuits; Transmitter circuits
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L27/00—Modulated-carrier systems
    • H04L27/32—Carrier systems characterised by combinations of two or more of the types covered by groups H04L27/02, H04L27/10, H04L27/18 or H04L27/26
    • H04L27/34—Amplitude- and phase-modulated carrier systems, e.g. quadrature-amplitude modulated carrier systems
    • H04L27/36—Modulator circuits; Transmitter circuits
    • H04L27/366—Arrangements for compensating undesirable properties of the transmission path between the modulator and the demodulator
    • H04L27/367—Arrangements for compensating undesirable properties of the transmission path between the modulator and the demodulator using predistortion

Definitions

  • the present application relates to the field of millimeter wave communication, and in particular to a method and device for generating high frequency vector millimeter waves, and a computer storage medium.
  • Millimeter waves have attracted extensive research interest in the industry due to their high modulation bandwidth, but there are some limitations in the generation of high-frequency millimeter waves, mainly due to the limited bandwidth of electronic devices.
  • the millimeter wave generated by the two uninterrupted laser beat frequencies is not affected by the bandwidth of the electronic device, but the generated millimeter wave is unstable.
  • the use of external modulation and multi-frequency methods to generate vector millimeter waves is a stable and economical method.
  • a quadruple frequency vector millimeter wave generation scheme based on IQ modulator and an eight-frequency vector millimeter wave generation scheme based on carrier suppression of single-arm Mach-Zehnder modulator are proposed. In both carrier suppression schemes, the phase of the received signal is multiplied accordingly, so precoding is required.
  • the phase needs to be halved in advance, but the precoding technique adopted in the above scheme has a strong clock component, which reduces the sensitivity of the receiver.
  • the embodiment of the present application provides a method and device for generating a vector millimeter wave, and a computer storage medium.
  • the low pass filtered signal is upconverted to an intermediate frequency to obtain a vector millimeter wave.
  • the performing phase precoding on the modulated signal includes:
  • the sum of the second phase or the second phase and the second angle is taken as the phase of the modulated signal.
  • the comparing the second phase or the sum of the second phase and the second angle as the phase of the modulation signal includes:
  • One phase is randomly selected from the following two phases as the phase of the modulation signal: the sum of the second phase, the second phase, and the second angle.
  • the mapping the binary signal into a modulated signal includes:
  • the binary signal is mapped to at least one of a following: Quadrature Phase Shift Keying (QPSK) signal, 16 Quadrature Amplitude Modulation (QAM) signal, 32QAM signal, 64QAM signal.
  • QPSK Quadrature Phase Shift Keying
  • QAM 16 Quadrature Amplitude Modulation
  • 32QAM 32QAM signal
  • 64QAM 64QAM signal.
  • the first angle is 90 degrees
  • the second angle is 180 degrees
  • the performing low-pass filtering on the phase pre-coded signal includes:
  • the phase precoded signal is input to a low pass filter for low pass filtering.
  • mapping unit configured to map the binary signal into a modulated signal
  • a precoding unit configured to phase precode the modulated signal
  • a filtering unit configured to perform low-pass filtering on the signal pre-coded by the phase
  • the frequency conversion unit is configured to up-convert the signal subjected to the low-pass filtering to an intermediate frequency to obtain a vector millimeter wave.
  • the precoding unit is configured to rotate the modulation signal counterclockwise by a first angle; acquire a phase of the signal rotated counterclockwise by a first angle, as a first phase; and acquire the first One half of the phase is taken as the second phase; the sum of the second phase or the second phase and the second angle is taken as the phase of the modulation signal.
  • the precoding unit is further configured to randomly select one phase from the following two phases as the phase of the modulation signal: the second phase, the second phase, and the second angle. And.
  • the mapping unit is configured to map the binary signal into at least one of the following signals: a QPSK signal, a 16QAM signal, a 32QAM signal, and a 64QAM signal.
  • the first angle is 90 degrees
  • the second angle is 180 degrees
  • the filtering unit is configured to input the phase pre-coded signal to a low-pass filter for low-pass filtering.
  • the binary signal is mapped into a modulated signal; the modulated signal is phase pre-coded; the signal pre-coded by the phase is low-pass filtered; and the signal passed through the low-pass filter is performed. Perform upconversion to the intermediate frequency to get the vector millimeter wave.
  • FIG. 1 is a schematic flow chart of a method for generating a vector millimeter wave according to an embodiment of the present application
  • FIG. 2 is a schematic structural diagram of generating a frequency-doubled signal based on carrier suppression to generate a vector millimeter wave according to an embodiment of the present application
  • Figure 5 is a comparison chart of the relationship between the bit error rate and the receiver optical power
  • FIG. 6 is a schematic structural diagram of a vector millimeter wave generating apparatus according to an embodiment of the present application.
  • the embodiment of the present application provides a balanced precoding scheme that can eliminate clock components.
  • FIG. 1 is a schematic flowchart of a method for generating a vector millimeter wave according to an embodiment of the present application. As shown in FIG. 1 , the method for generating a vector millimeter wave includes the following steps:
  • Step 101 Map the binary signal into a modulated signal.
  • the binary signal is mapped to at least one of the following signals: Quadrature Phase Shift Keying (QPSK) signal, 16 Quadrature Amplitude Modulation (QAM) signal, 32QAM signal , 64QAM signal.
  • QPSK Quadrature Phase Shift Keying
  • QAM Quadrature Amplitude Modulation
  • the high-order mapping of the binary signal can be mapped to a signal of a modulation format such as QPSK, 16QAM, 32QAM, or 64QAM.
  • a modulation format such as QPSK, 16QAM, 32QAM, or 64QAM.
  • Step 102 Perform phase precoding on the modulated signal.
  • phase precoding includes the following steps:
  • the sum of the second phase or the second phase and the second angle is taken as the phase of the modulated signal.
  • the comparing the second phase or the sum of the second phase and the second angle as the phase of the modulation signal includes:
  • One phase is randomly selected from the following two phases as the phase of the modulation signal: the sum of the second phase, the second phase, and the second angle.
  • the first angle is 90 degrees
  • the second angle is 180 degrees.
  • Step 103 Perform low-pass filtering on the phase-precoded signal.
  • phase-pre-coded signal is input to a low-pass filter for low-pass filtering.
  • Step 104 Upconverting the low pass filtered signal to an intermediate frequency to obtain a vector millimeter wave.
  • the technical solution of the embodiment of the present application can obviously eliminate the clock component of the system and improve the sensitivity of the receiver.
  • FIG. 2 is a schematic structural diagram of generating a frequency multiplication signal and generating a vector millimeter wave based on an Carrier Suppression (OCS) according to an embodiment of the present application.
  • OCS Carrier Suppression
  • phase precoding process part is as follows:
  • the first step rotating the mapped QPSK signal counterclockwise by 90°;
  • Step 2 Phase the signal rotated 90° counterclockwise
  • the third step the phase obtained Take half
  • the fourth step the signal phase is randomly selected in the ⁇ or ⁇ + 180 °;
  • phase precoding result in the prior art is shown in FIG. 3, and the phase precoding result in the embodiment of the present application is as shown in FIG. 4.
  • the embodiments of the present application compare the two schemes (the existing scheme and the scheme of the embodiment of the present application) through experiments.
  • the IF signal is 8 GHz and carries the 8 GBaud signal.
  • the relationship between the resulting bit error rate and the receiver optical power is shown in Figure 5.
  • the fold line 1 represents the existing solution
  • the fold line 2 represents the solution of the embodiment of the present application.
  • the bit error rate is 3.8 ⁇ 10 ⁇ 3
  • the pre-coding scheme of the embodiment of the present application can adopt the optical power of the receiver. Effectively increased by 2.5dB.
  • the embodiment of the present application illustrates that the clock component can be eliminated by using the equalization precoding scheme in the vector suppression millimeter wave generated by the carrier suppression, and the system performance is greatly improved.
  • FIG. 6 is a schematic structural diagram of a vector millimeter wave generating apparatus according to an embodiment of the present application. As shown in FIG. 6, the apparatus includes:
  • Mapping unit 61 configured to map the binary signal into a modulated signal
  • a precoding unit 62 configured to perform phase precoding on the modulated signal
  • the filtering unit 63 is configured to perform low-pass filtering on the phase pre-coded signal
  • the frequency conversion unit 64 is configured to upconvert the signal subjected to the low pass filtering to an intermediate frequency to obtain a vector millimeter wave.
  • the pre-coding unit 62 is configured to rotate the modulation signal counterclockwise by a first angle, and acquire a phase of the signal rotated counterclockwise by a first angle as a first phase; One half of one phase, as the second phase; the sum of the second phase or the second phase and the second angle is taken as the phase of the modulation signal.
  • the precoding unit 62 is further configured to randomly select one phase from the following two phases as the phase of the modulation signal: the second phase, the second phase, and the second The sum of the angles.
  • the mapping unit 61 is configured to map the binary signal into at least one of the following signals: a QPSK signal, a 16QAM signal, a 32QAM signal, and a 64QAM signal.
  • the first angle is 90 degrees
  • the second angle is 180 degrees.
  • the filtering unit 63 is configured to input the phase pre-coded signal to a low-pass filter for low-pass filtering.
  • the functions implemented by the respective units in the vector millimeter wave generating device may be implemented by a central processing unit (CPU) or a microprocessor (MPU) located in the vector millimeter wave generating device. , Micro Processor Unit), or digital signal processor (DSP, Digital Signal Processor), or Field Programmable Gate Array (FPGA).
  • CPU central processing unit
  • MPU microprocessor
  • Micro Processor Unit Micro Processor Unit
  • DSP Digital Signal Processor
  • FPGA Field Programmable Gate Array
  • embodiments of the present application can be provided as a method, system, or computer program product. Accordingly, the application can take the form of a hardware embodiment, a software embodiment, or an embodiment in combination with software and hardware. Moreover, the application can take the form of a computer program product embodied on one or more computer-usable storage media (including but not limited to disk storage and optical storage, etc.) including computer usable program code.
  • the computer program instructions can also be stored in a computer readable memory that can direct a computer or other programmable data processing device to operate in a particular manner, such that the instructions stored in the computer readable memory produce an article of manufacture comprising the instruction device.
  • the apparatus implements the functions specified in one or more blocks of a flow or a flow and/or block diagram of the flowchart.
  • These computer program instructions can also be loaded onto a computer or other programmable data processing device such that a series of operational steps are performed on a computer or other programmable device to produce computer-implemented processing for execution on a computer or other programmable device.
  • the instructions provide steps for implementing the functions specified in one or more of the flow or in a block or blocks of a flow diagram.
  • an embodiment of the present invention further provides a computer storage medium, wherein a computer program configured to execute the vector millimeter wave generation method of the embodiment of the present invention is stored.
  • the technical solution of the embodiment of the present application maps a binary signal into a modulated signal, performs phase precoding on the modulated signal, performs low-pass filtering on the phase pre-coded signal, and performs a low-pass filtered signal on the signal. Upconverting to the intermediate frequency and obtaining the vector millimeter wave can significantly eliminate the clock component of the system and improve the sensitivity of the receiver.

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  • Computer Networks & Wireless Communication (AREA)
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Abstract

Disclosed in the present application are a vector millimeter wave generation method and apparatus, and a computer storage medium. The method comprises: mapping a binary signal into a modulation signal; performing phase precoding on the modulation signal; performing low-pass filtering on the signal on which the phase precoding has been performed; and performing upconversion on the signal on which the low-pass filtering has been performed, to make the signal to be at a middle frequency, so as to obtain a vector millimeter wave.

Description

一种矢量毫米波的产生方法及装置、计算机存储介质Method and device for generating vector millimeter wave, computer storage medium
相关申请的交叉引用Cross-reference to related applications
本申请基于申请号为201710112553.X、申请日为2017年02月28日的中国专利申请提出，并要求该中国专利申请的优先权，该中国专利申请的全部内容在此引入本申请作为参考。The present application is based on a Chinese patent application filed on Jan. 28, 2017, the entire disclosure of which is hereby incorporated by reference.
技术领域Technical field
本申请涉及毫米波通讯领域，尤其涉及高频矢量毫米波的产生方法及装置、计算机存储介质。The present application relates to the field of millimeter wave communication, and in particular to a method and device for generating high frequency vector millimeter waves, and a computer storage medium.
背景技术Background technique
毫米波因其调制带宽高引起业内广泛的研究兴趣，但是高频毫米波的产生也存在一些限制因素，主要是电子器件的带宽受限。利用两个不锁频的激光器拍频产生的毫米波虽然不受电子器件带宽的影响，但是生成的毫米波是不稳定的。目前，利用外调和多倍频的方法产生矢量毫米波是一种稳定并且经济的方法。目前提出了一种基于IQ调制器的四倍频矢量毫米波产生方案，以及基于单臂马赫-曾德尔调制器的载波抑制的八倍频矢量毫米波产生方案。在这两种载波抑制方案中，接收信号的相位都会相应的倍增，因此需要做预编码。对于两倍频产生的矢量毫米波而言，需要预先对相位进行减半，但是上述方案采用的预编码技术都存在很强的时钟分量，会降低接收机的灵敏度。Millimeter waves have attracted extensive research interest in the industry due to their high modulation bandwidth, but there are some limitations in the generation of high-frequency millimeter waves, mainly due to the limited bandwidth of electronic devices. The millimeter wave generated by the two uninterrupted laser beat frequencies is not affected by the bandwidth of the electronic device, but the generated millimeter wave is unstable. At present, the use of external modulation and multi-frequency methods to generate vector millimeter waves is a stable and economical method. A quadruple frequency vector millimeter wave generation scheme based on IQ modulator and an eight-frequency vector millimeter wave generation scheme based on carrier suppression of single-arm Mach-Zehnder modulator are proposed. In both carrier suppression schemes, the phase of the received signal is multiplied accordingly, so precoding is required. For vector millimeter waves generated by double frequency, the phase needs to be halved in advance, but the precoding technique adopted in the above scheme has a strong clock component, which reduces the sensitivity of the receiver.
发明内容Summary of the invention
为解决上述技术问题，本申请实施例提供了一种矢量毫米波的产生方 法及装置、计算机存储介质。In order to solve the above technical problem, the embodiment of the present application provides a method and device for generating a vector millimeter wave, and a computer storage medium.
本申请实施例提供的矢量毫米波的产生方法，包括：The method for generating a vector millimeter wave provided by the embodiment of the present application includes:
将二进制信号映射成调制信号；Mapping a binary signal into a modulated signal;
对所述调制信号进行相位预编码；Phase precoding the modulated signal;
对经过所述相位预编码的信号进行低通滤波；Performing low pass filtering on the phase precoded signal;
对经过所述低通滤波的信号进行上变频到中频，得到矢量毫米波。The low pass filtered signal is upconverted to an intermediate frequency to obtain a vector millimeter wave.
本申请实施例中，所述对所述调制信号进行相位预编码，包括：In the embodiment of the present application, the performing phase precoding on the modulated signal includes:
将所述调制信号逆时针旋转第一角度；Rotating the modulation signal counterclockwise by a first angle;
获取所述逆时针旋转第一角度的信号的相位，作为第一相位；Obtaining a phase of the signal rotated counterclockwise at a first angle as a first phase;
获取所述第一相位的一半，作为第二相位；Obtaining half of the first phase as the second phase;
将所述第二相位或者所述第二相位与第二角度的和作为所述调制信号的相位。The sum of the second phase or the second phase and the second angle is taken as the phase of the modulated signal.
本申请实施例中，所述将所述第二相位或者所述第二相位与第二角度的和作为所述调制信号的相位，包括：In the embodiment of the present application, the comparing the second phase or the sum of the second phase and the second angle as the phase of the modulation signal includes:
从以下两个相位之中随机选择一个相位，作为所述调制信号的相位：所述第二相位、所述第二相位与第二角度的和。One phase is randomly selected from the following two phases as the phase of the modulation signal: the sum of the second phase, the second phase, and the second angle.
本申请实施例中，所述将二进制信号映射成调制信号，包括：In the embodiment of the present application, the mapping the binary signal into a modulated signal includes:
将二进制信号映射成如下信号的至少之一：正交相移键控(QPSK，Quadrature Phase Shift Keyin)信号、16正交振幅调制(QAM，Quadrature Amplitude Modulation)信号、32QAM信号、64QAM信号。The binary signal is mapped to at least one of a following: Quadrature Phase Shift Keying (QPSK) signal, 16 Quadrature Amplitude Modulation (QAM) signal, 32QAM signal, 64QAM signal.
本申请实施例中，当所述调制信号为QPSK信号时，所述第一角度为90度，所述第二角度为180度。In the embodiment of the present application, when the modulation signal is a QPSK signal, the first angle is 90 degrees, and the second angle is 180 degrees.
本申请实施例中，所述对经过所述相位预编码的信号进行低通滤波，包括：In the embodiment of the present application, the performing low-pass filtering on the phase pre-coded signal includes:
将经过所述相位预编码的信号输入至低通滤波器，以进行低通滤波。The phase precoded signal is input to a low pass filter for low pass filtering.
本申请实施例提供的矢量毫米波的产生装置，包括：The device for generating a vector millimeter wave provided by the embodiment of the present application includes:
映射单元，配置为将二进制信号映射成调制信号；a mapping unit configured to map the binary signal into a modulated signal;
预编码单元，配置为对所述调制信号进行相位预编码；a precoding unit configured to phase precode the modulated signal;
滤波单元，配置为对经过所述相位预编码的信号进行低通滤波；a filtering unit configured to perform low-pass filtering on the signal pre-coded by the phase;
变频单元，配置为对经过所述低通滤波的信号进行上变频到中频，得到矢量毫米波。The frequency conversion unit is configured to up-convert the signal subjected to the low-pass filtering to an intermediate frequency to obtain a vector millimeter wave.
本申请实施例中，所述预编码单元，配置为将所述调制信号逆时针旋转第一角度；获取所述逆时针旋转第一角度的信号的相位，作为第一相位；获取所述第一相位的一半，作为第二相位；将所述第二相位或者所述第二相位与第二角度的和作为所述调制信号的相位。In the embodiment of the present application, the precoding unit is configured to rotate the modulation signal counterclockwise by a first angle; acquire a phase of the signal rotated counterclockwise by a first angle, as a first phase; and acquire the first One half of the phase is taken as the second phase; the sum of the second phase or the second phase and the second angle is taken as the phase of the modulation signal.
本申请实施例中，所述预编码单元，还配置为从以下两个相位之中随机选择一个相位，作为所述调制信号的相位：所述第二相位、所述第二相位与第二角度的和。In this embodiment, the precoding unit is further configured to randomly select one phase from the following two phases as the phase of the modulation signal: the second phase, the second phase, and the second angle. And.
本申请实施例中，所述映射单元，配置为将二进制信号映射成如下信号的至少之一：QPSK信号、16QAM信号、32QAM信号、64QAM信号。In the embodiment of the present application, the mapping unit is configured to map the binary signal into at least one of the following signals: a QPSK signal, a 16QAM signal, a 32QAM signal, and a 64QAM signal.
本申请实施例中，当所述调制信号为QPSK信号时，所述第一角度为90度，所述第二角度为180度。In the embodiment of the present application, when the modulation signal is a QPSK signal, the first angle is 90 degrees, and the second angle is 180 degrees.
本申请实施例中，所述滤波单元，配置为将经过所述相位预编码的信号输入至低通滤波器，以进行低通滤波。In the embodiment of the present application, the filtering unit is configured to input the phase pre-coded signal to a low-pass filter for low-pass filtering.
本申请实施例的技术方案中，将二进制信号映射成调制信号；对所述调制信号进行相位预编码；对经过所述相位预编码的信号进行低通滤波；对经过所述低通滤波的信号进行上变频到中频，得到矢量毫米波。采用本申请实施例的技术方案，可以明显消除***的时钟分量，提高了接收机的灵敏度。In the technical solution of the embodiment of the present application, the binary signal is mapped into a modulated signal; the modulated signal is phase pre-coded; the signal pre-coded by the phase is low-pass filtered; and the signal passed through the low-pass filter is performed. Perform upconversion to the intermediate frequency to get the vector millimeter wave. By adopting the technical solution of the embodiment of the present application, the clock component of the system can be obviously eliminated, and the sensitivity of the receiver is improved.
附图说明DRAWINGS
附图以示例而非限制的方式大体示出了本文中所讨论的各个实施例。The drawings generally illustrate the various embodiments discussed herein by way of example and not limitation.
图1为本申请实施例的矢量毫米波的产生方法的流程示意图；1 is a schematic flow chart of a method for generating a vector millimeter wave according to an embodiment of the present application;
图2为本申请实施例的基于载波抑制产生倍频信号进而产生矢量毫米波的原理架构图；2 is a schematic structural diagram of generating a frequency-doubled signal based on carrier suppression to generate a vector millimeter wave according to an embodiment of the present application;
图3为现有技术中的相位预编码结果示意图；3 is a schematic diagram of phase precoding results in the prior art;
图4为本申请实施例中的相位预编码结果示意图；4 is a schematic diagram of phase precoding results in an embodiment of the present application;
图5为误码率和接收机光功率的关系曲线对比图；Figure 5 is a comparison chart of the relationship between the bit error rate and the receiver optical power;
图6为本申请实施例的矢量毫米波的产生装置的结构组成示意图。FIG. 6 is a schematic structural diagram of a vector millimeter wave generating apparatus according to an embodiment of the present application.
具体实施方式detailed description
为了能够更加详尽地了解本申请实施例的特点与技术内容，下面结合附图对本申请实施例的实现进行详细阐述，所附附图仅供参考说明之用，并非用来限定本申请实施例。The embodiments of the present application are described in detail with reference to the accompanying drawings.
为克服预编码技术中存在的时钟分量问题和缺陷，本申请实施例提供一种可以消除时钟分量的平衡预编码方案。To overcome the clock component problems and defects existing in the precoding technology, the embodiment of the present application provides a balanced precoding scheme that can eliminate clock components.
图1为本申请实施例的矢量毫米波的产生方法的流程示意图，如图1所示，所述矢量毫米波的产生方法包括以下步骤：FIG. 1 is a schematic flowchart of a method for generating a vector millimeter wave according to an embodiment of the present application. As shown in FIG. 1 , the method for generating a vector millimeter wave includes the following steps:
步骤101：将二进制信号映射成调制信号。Step 101: Map the binary signal into a modulated signal.
本申请实施例中，将二进制信号映射成如下信号的至少之一：正交相移键控(QPSK，Quadrature Phase Shift Keyin)信号、16正交振幅调制(QAM，Quadrature Amplitude Modulation)信号、32QAM信号、64QAM信号。In the embodiment of the present application, the binary signal is mapped to at least one of the following signals: Quadrature Phase Shift Keying (QPSK) signal, 16 Quadrature Amplitude Modulation (QAM) signal, 32QAM signal , 64QAM signal.
具体地，在矢量毫米波的产生端，对二进制信号进行高阶映射，可以映射成QPSK、16QAM、32QAM、64QAM等调制格式的信号。本申请实施例的以下方案以QPSK信号为例进行解释说明。Specifically, at the generation end of the vector millimeter wave, the high-order mapping of the binary signal can be mapped to a signal of a modulation format such as QPSK, 16QAM, 32QAM, or 64QAM. The following scheme of the embodiment of the present application is explained by taking a QPSK signal as an example.
步骤102：对所述调制信号进行相位预编码。Step 102: Perform phase precoding on the modulated signal.
这里，现有预编码技术会使调制信号存在时钟信号，本申请实施例采用平衡预编码技术，消除时钟分量。具体地，相位预编码包括以下步骤：Here, the existing precoding technology causes the modulated signal to have a clock signal. The embodiment of the present application adopts a balanced precoding technique to eliminate the clock component. Specifically, phase precoding includes the following steps:
将所述调制信号逆时针旋转第一角度；Rotating the modulation signal counterclockwise by a first angle;
获取所述逆时针旋转第一角度的信号的相位，作为第一相位；Obtaining a phase of the signal rotated counterclockwise at a first angle as a first phase;
获取所述第一相位的一半，作为第二相位；Obtaining half of the first phase as the second phase;
将所述第二相位或者所述第二相位与第二角度的和作为所述调制信号的相位。The sum of the second phase or the second phase and the second angle is taken as the phase of the modulated signal.
至此，相位预编码过程完成。At this point, the phase precoding process is complete.
上述方案中，所述将所述第二相位或者所述第二相位与第二角度的和作为所述调制信号的相位，包括：In the above solution, the comparing the second phase or the sum of the second phase and the second angle as the phase of the modulation signal includes:
从以下两个相位之中随机选择一个相位，作为所述调制信号的相位：所述第二相位、所述第二相位与第二角度的和。One phase is randomly selected from the following two phases as the phase of the modulation signal: the sum of the second phase, the second phase, and the second angle.
上述方案中，当所述调制信号为QPSK信号时，所述第一角度为90度，所述第二角度为180度。In the above solution, when the modulation signal is a QPSK signal, the first angle is 90 degrees, and the second angle is 180 degrees.
步骤103：对经过所述相位预编码的信号进行低通滤波。Step 103: Perform low-pass filtering on the phase-precoded signal.
具体地，将经过所述相位预编码的信号输入至低通滤波器，以进行低通滤波。Specifically, the phase-pre-coded signal is input to a low-pass filter for low-pass filtering.
步骤104：对经过所述低通滤波的信号进行上变频到中频，得到矢量毫米波。Step 104: Upconverting the low pass filtered signal to an intermediate frequency to obtain a vector millimeter wave.
本申请实施例的技术方案，可以明显消除***的时钟分量，提高了接收机的灵敏度。The technical solution of the embodiment of the present application can obviously eliminate the clock component of the system and improve the sensitivity of the receiver.
下面结合具体应用场景对本申请实施例的技术方案作进一步详细描述。The technical solutions of the embodiments of the present application are further described in detail below with reference to specific application scenarios.
图2为本申请实施例的基于载波抑制(OCS，Optical Carrier Suppression)产生倍频信号进而产生矢量毫米波的原理架构图。其中，调制器偏置在最 小点，载波抑制产生的两倍频信号在接收端可以表示为如下公式：FIG. 2 is a schematic structural diagram of generating a frequency multiplication signal and generating a vector millimeter wave based on an Carrier Suppression (OCS) according to an embodiment of the present application. Wherein, the modulator is biased at the minimum point, and the double-frequency signal generated by carrier suppression can be expressed as follows at the receiving end:
Figure PCTCN2018077444-appb-000001
Figure PCTCN2018077444-appb-000001
其中，i RF是探测器输出的光电流，R是探测器的光电转换率，J 1是第一类第一阶贝塞尔函数，f s是中频频率，
Figure PCTCN2018077444-appb-000002
是原始QPSK信号的相位，对于恒模信号而言，κ是一个常数。从公式中可以看出，OCS产生的毫米波在接收端相位会加倍，所以需要在发射端对原始的QPSK信号进行相位预编码。相位预编码流程部分的处理步骤如下： Where i RF is the photocurrent output by the detector, R is the photoelectric conversion rate of the detector, J 1 is the first-order first-order Bessel function, and f s is the intermediate frequency.
Figure PCTCN2018077444-appb-000002
Is the phase of the original QPSK signal, which is a constant for the constant mode signal. It can be seen from the formula that the millimeter wave generated by the OCS is doubled at the receiving end, so the original QPSK signal needs to be phase precoded at the transmitting end. The processing steps of the phase precoding process part are as follows:
第一步：对映射的QPSK信号逆时针旋转90°；The first step: rotating the mapped QPSK signal counterclockwise by 90°;
第二步：对逆时针旋转90°的信号求相位
Figure PCTCN2018077444-appb-000003
Step 2: Phase the signal rotated 90° counterclockwise
Figure PCTCN2018077444-appb-000003
第三步：对所得相位
Figure PCTCN2018077444-appb-000004
取半，
Figure PCTCN2018077444-appb-000005
The third step: the phase obtained
Figure PCTCN2018077444-appb-000004
Take half,
Figure PCTCN2018077444-appb-000005
第四步：信号相位在第α或者α+180°中随机选择；The fourth step: the signal phase is randomly selected in the α or α + 180 °;
至此，相位预编码过程完成。At this point, the phase precoding process is complete.
现有技术中的相位预编码结果如图3所示，本申请实施例中的相位预编码结果如图4所示。The phase precoding result in the prior art is shown in FIG. 3, and the phase precoding result in the embodiment of the present application is as shown in FIG. 4.
本申请实施例通过实验对两种方案(现有方案和本申请实施例的方案)进行了对比。中频信号为8GHz、承载了8GBaud信号，所得误码率和接收机光功率的关系曲线图如图5所示。折线1代表现有方案，折线2代表本申请实施例的方案，从图中可以看出，在误码率为3.8×10 -3时，采用本申请实施例的预编码方案接收机光功率可以有效提升2.5dB。 The embodiments of the present application compare the two schemes (the existing scheme and the scheme of the embodiment of the present application) through experiments. The IF signal is 8 GHz and carries the 8 GBaud signal. The relationship between the resulting bit error rate and the receiver optical power is shown in Figure 5. The fold line 1 represents the existing solution, and the fold line 2 represents the solution of the embodiment of the present application. As can be seen from the figure, when the bit error rate is 3.8×10 −3 , the pre-coding scheme of the embodiment of the present application can adopt the optical power of the receiver. Effectively increased by 2.5dB.
综上所述，本申请实施例以实验数据说明了在载波抑制产生矢量毫米波中利用均衡预编码方案可以消除时钟分量，***性能因此得到很大的提升。In summary, the embodiment of the present application illustrates that the clock component can be eliminated by using the equalization precoding scheme in the vector suppression millimeter wave generated by the carrier suppression, and the system performance is greatly improved.
本领域的普通技术人员可以理解，上述实施方式是实现本申请的具体实施例，而在实际应用中，可以在形式上和细节上对其作各种改变，包括采用不同形式的调制格式，如16QAM、32QAM等，而不偏离本申请的精 神和范围。It will be understood by those skilled in the art that the above embodiments are specific embodiments for implementing the present application, and in practical applications, various changes may be made in form and detail, including using different forms of modulation formats, such as 16QAM, 32QAM, etc., without departing from the spirit and scope of the present application.
图6为本申请实施例的矢量毫米波的产生装置的结构组成示意图，如图6所示，所述装置包括：FIG. 6 is a schematic structural diagram of a vector millimeter wave generating apparatus according to an embodiment of the present application. As shown in FIG. 6, the apparatus includes:
映射单元61，配置为将二进制信号映射成调制信号； Mapping unit 61, configured to map the binary signal into a modulated signal;
预编码单元62，配置为对所述调制信号进行相位预编码；a precoding unit 62 configured to perform phase precoding on the modulated signal;
滤波单元63，配置为对经过所述相位预编码的信号进行低通滤波；The filtering unit 63 is configured to perform low-pass filtering on the phase pre-coded signal;
变频单元64，配置为对经过所述低通滤波的信号进行上变频到中频，得到矢量毫米波。The frequency conversion unit 64 is configured to upconvert the signal subjected to the low pass filtering to an intermediate frequency to obtain a vector millimeter wave.
本申请实施例中，所述预编码单元62，配置为将所述调制信号逆时针旋转第一角度；获取所述逆时针旋转第一角度的信号的相位，作为第一相位；获取所述第一相位的一半，作为第二相位；将所述第二相位或者所述第二相位与第二角度的和作为所述调制信号的相位。In the embodiment of the present application, the pre-coding unit 62 is configured to rotate the modulation signal counterclockwise by a first angle, and acquire a phase of the signal rotated counterclockwise by a first angle as a first phase; One half of one phase, as the second phase; the sum of the second phase or the second phase and the second angle is taken as the phase of the modulation signal.
本申请实施例中，所述预编码单元62，还配置为从以下两个相位之中随机选择一个相位，作为所述调制信号的相位：所述第二相位、所述第二相位与第二角度的和。In the embodiment of the present application, the precoding unit 62 is further configured to randomly select one phase from the following two phases as the phase of the modulation signal: the second phase, the second phase, and the second The sum of the angles.
本申请实施例中，所述映射单元61，配置为将二进制信号映射成如下信号的至少之一：QPSK信号、16QAM信号、32QAM信号、64QAM信号。In the embodiment of the present application, the mapping unit 61 is configured to map the binary signal into at least one of the following signals: a QPSK signal, a 16QAM signal, a 32QAM signal, and a 64QAM signal.
上述方案中，当所述调制信号为QPSK信号时，所述第一角度为90度，所述第二角度为180度。In the above solution, when the modulation signal is a QPSK signal, the first angle is 90 degrees, and the second angle is 180 degrees.
本申请实施例中，所述滤波单元63，配置为将经过所述相位预编码的信号输入至低通滤波器，以进行低通滤波。In the embodiment of the present application, the filtering unit 63 is configured to input the phase pre-coded signal to a low-pass filter for low-pass filtering.
本领域技术人员应当理解，图6所示的矢量毫米波的产生装置中的各单元的实现功能可参照前述矢量毫米波的产生方法的相关描述而理解。It will be understood by those skilled in the art that the implementation function of each unit in the vector millimeter wave generating apparatus shown in FIG. 6 can be understood with reference to the related description of the aforementioned vector millimeter wave generating method.
在实际应用中，所述矢量毫米波的产生装置中的各个单元所实现的功能，均可由位于矢量毫米波的产生装置中的中央处理器(CPU，Central  Processing Unit)、或微处理器(MPU，Micro Processor Unit)、或数字信号处理器(DSP，Digital Signal Processor)、或现场可编程门阵列(FPGA，Field Programmable Gate Array)等实现。In practical applications, the functions implemented by the respective units in the vector millimeter wave generating device may be implemented by a central processing unit (CPU) or a microprocessor (MPU) located in the vector millimeter wave generating device. , Micro Processor Unit), or digital signal processor (DSP, Digital Signal Processor), or Field Programmable Gate Array (FPGA).
本领域内的技术人员应明白，本申请的实施例可提供为方法、***、或计算机程序产品。因此，本申请可采用硬件实施例、软件实施例、或结合软件和硬件方面的实施例的形式。而且，本申请可采用在一个或多个其中包含有计算机可用程序代码的计算机可用存储介质(包括但不限于磁盘存储器和光学存储器等)上实施的计算机程序产品的形式。Those skilled in the art will appreciate that embodiments of the present application can be provided as a method, system, or computer program product. Accordingly, the application can take the form of a hardware embodiment, a software embodiment, or an embodiment in combination with software and hardware. Moreover, the application can take the form of a computer program product embodied on one or more computer-usable storage media (including but not limited to disk storage and optical storage, etc.) including computer usable program code.
本申请是参照根据本申请实施例的方法、设备(***)、和计算机程序产品的流程图和/或方框图来描述的。应理解可由计算机程序指令实现流程图和/或方框图中的每一流程和/或方框、以及流程图和/或方框图中的流程和/或方框的结合。可提供这些计算机程序指令到通用计算机、专用计算机、嵌入式处理机或其他可编程数据处理设备的处理器以产生一个机器，使得通过计算机或其他可编程数据处理设备的处理器执行的指令产生用于实现在流程图一个流程或多个流程和/或方框图一个方框或多个方框中指定的功能的装置。The present application is described with reference to flowchart illustrations and/or block diagrams of methods, apparatus (system), and computer program products according to embodiments of the present application. It will be understood that each flow and/or block of the flowchart illustrations and/or FIG. These computer program instructions can be provided to a processor of a general purpose computer, special purpose computer, embedded processor, or other programmable data processing device to produce a machine for the execution of instructions for execution by a processor of a computer or other programmable data processing device. Means for implementing the functions specified in one or more of the flow or in a block or blocks of the flow chart.
这些计算机程序指令也可存储在能引导计算机或其他可编程数据处理设备以特定方式工作的计算机可读存储器中，使得存储在该计算机可读存储器中的指令产生包括指令装置的制造品，该指令装置实现在流程图一个流程或多个流程和/或方框图一个方框或多个方框中指定的功能。The computer program instructions can also be stored in a computer readable memory that can direct a computer or other programmable data processing device to operate in a particular manner, such that the instructions stored in the computer readable memory produce an article of manufacture comprising the instruction device. The apparatus implements the functions specified in one or more blocks of a flow or a flow and/or block diagram of the flowchart.
这些计算机程序指令也可装载到计算机或其他可编程数据处理设备上，使得在计算机或其他可编程设备上执行一系列操作步骤以产生计算机实现的处理，从而在计算机或其他可编程设备上执行的指令提供用于实现在流程图一个流程或多个流程和/或方框图一个方框或多个方框中指定的功能的步骤。These computer program instructions can also be loaded onto a computer or other programmable data processing device such that a series of operational steps are performed on a computer or other programmable device to produce computer-implemented processing for execution on a computer or other programmable device. The instructions provide steps for implementing the functions specified in one or more of the flow or in a block or blocks of a flow diagram.
相应地，本发明实施例还提供一种计算机存储介质，其中存储有计算机程序，该计算机程序配置为执行本发明实施例的矢量毫米波的产生方法。Correspondingly, an embodiment of the present invention further provides a computer storage medium, wherein a computer program configured to execute the vector millimeter wave generation method of the embodiment of the present invention is stored.
以上所述，仅为本申请的较佳实施例而已，并非用于限定本申请的保护范围。The above is only the preferred embodiment of the present application and is not intended to limit the scope of the present application.
工业实用性Industrial applicability
本申请实施例的技术方案，将二进制信号映射成调制信号；对所述调制信号进行相位预编码；对经过所述相位预编码的信号进行低通滤波；对经过所述低通滤波的信号进行上变频到中频，得到矢量毫米波，可以明显消除***的时钟分量，提高了接收机的灵敏度。The technical solution of the embodiment of the present application maps a binary signal into a modulated signal, performs phase precoding on the modulated signal, performs low-pass filtering on the phase pre-coded signal, and performs a low-pass filtered signal on the signal. Upconverting to the intermediate frequency and obtaining the vector millimeter wave can significantly eliminate the clock component of the system and improve the sensitivity of the receiver.

Claims (13)

  1. 一种矢量毫米波的产生方法，所述方法包括：A method for generating a vector millimeter wave, the method comprising:
    将二进制信号映射成调制信号；Mapping a binary signal into a modulated signal;
    对所述调制信号进行相位预编码；Phase precoding the modulated signal;
    对经过所述相位预编码的信号进行低通滤波；Performing low pass filtering on the phase precoded signal;
    对经过所述低通滤波的信号进行上变频到中频，得到矢量毫米波。The low pass filtered signal is upconverted to an intermediate frequency to obtain a vector millimeter wave.
  2. 根据权利要求1所述的方法，其中，所述对所述调制信号进行相位预编码，包括：The method of claim 1 wherein said phase precoding said modulated signal comprises:
    将所述调制信号逆时针旋转第一角度；Rotating the modulation signal counterclockwise by a first angle;
    获取所述逆时针旋转第一角度的信号的相位，作为第一相位；Obtaining a phase of the signal rotated counterclockwise at a first angle as a first phase;
    获取所述第一相位的一半，作为第二相位；Obtaining half of the first phase as the second phase;
    将所述第二相位或者所述第二相位与第二角度的和作为所述调制信号的相位。The sum of the second phase or the second phase and the second angle is taken as the phase of the modulated signal.
  3. 根据权利要求2所述的方法，其中，所述将所述第二相位或者所述第二相位与第二角度的和作为所述调制信号的相位，包括：The method according to claim 2, wherein said comparing said second phase or said second phase to a second angle as a phase of said modulated signal comprises:
    从以下两个相位之中随机选择一个相位，作为所述调制信号的相位：所述第二相位、所述第二相位与第二角度的和。One phase is randomly selected from the following two phases as the phase of the modulation signal: the sum of the second phase, the second phase, and the second angle.
  4. 根据权利要求1所述的方法，其中，所述将二进制信号映射成调制信号，包括：The method of claim 1 wherein said mapping said binary signal to a modulated signal comprises:
    将二进制信号映射成如下信号的至少之一：正交相移键控QPSK信号、16正交振幅调制QAM信号、32QAM信号、64QAM信号。The binary signal is mapped to at least one of a quadrature phase shift keying QPSK signal, a 16 quadrature amplitude modulated QAM signal, a 32QAM signal, and a 64QAM signal.
  5. 根据权利要求3所述的方法，其中，当所述调制信号为QPSK信号时，所述第一角度为90度，所述第二角度为180度。The method of claim 3, wherein when the modulated signal is a QPSK signal, the first angle is 90 degrees and the second angle is 180 degrees.
  6. 根据权利要求1所述的方法，其中，所述对经过所述相位预编码的信号进行低通滤波，包括：The method of claim 1 wherein said low pass filtering said phase precoded signal comprises:
    将经过所述相位预编码的信号输入至低通滤波器，以进行低通滤波。The phase precoded signal is input to a low pass filter for low pass filtering.
  7. 一种矢量毫米波的产生装置，所述装置包括：A vector millimeter wave generating device, the device comprising:
    映射单元，配置为将二进制信号映射成调制信号；a mapping unit configured to map the binary signal into a modulated signal;
    预编码单元，配置为对所述调制信号进行相位预编码；a precoding unit configured to phase precode the modulated signal;
    滤波单元，配置为对经过所述相位预编码的信号进行低通滤波；a filtering unit configured to perform low-pass filtering on the signal pre-coded by the phase;
    变频单元，配置为对经过所述低通滤波的信号进行上变频到中频，得到矢量毫米波。The frequency conversion unit is configured to up-convert the signal subjected to the low-pass filtering to an intermediate frequency to obtain a vector millimeter wave.
  8. 根据权利要求7所述的装置，其中，所述预编码单元，配置为将所述调制信号逆时针旋转第一角度；获取所述逆时针旋转第一角度的信号的相位，作为第一相位；获取所述第一相位的一半，作为第二相位；将所述第二相位或者所述第二相位与第二角度的和作为所述调制信号的相位。The apparatus according to claim 7, wherein the precoding unit is configured to rotate the modulation signal counterclockwise by a first angle; and acquire a phase of the signal rotated counterclockwise by a first angle as a first phase; Obtaining half of the first phase as a second phase; using the second phase or a sum of the second phase and the second angle as a phase of the modulation signal.
  9. 根据权利要求8所述的装置，其中，所述预编码单元，还配置为从以下两个相位之中随机选择一个相位，作为所述调制信号的相位：所述第二相位、所述第二相位与第二角度的和。The apparatus according to claim 8, wherein said precoding unit is further configured to randomly select one phase from among two phases as a phase of said modulated signal: said second phase, said second The sum of the phase and the second angle.
  10. 根据权利要求7所述的装置，其中，所述映射单元，配置为将二进制信号映射成如下信号的至少之一：QPSK信号、16QAM信号、32QAM信号、64QAM信号。The apparatus of claim 7, wherein the mapping unit is configured to map the binary signal to at least one of a QPSK signal, a 16QAM signal, a 32QAM signal, and a 64QAM signal.
  11. 根据权利要求9所述的装置，其中，当所述调制信号为QPSK信号时，所述第一角度为90度，所述第二角度为180度。The apparatus of claim 9, wherein when the modulation signal is a QPSK signal, the first angle is 90 degrees and the second angle is 180 degrees.
  12. 根据权利要求7所述的装置，其中，所述滤波单元，配置为将经过所述相位预编码的信号输入至低通滤波器，以进行低通滤波。The apparatus of claim 7, wherein the filtering unit is configured to input the phase precoded signal to a low pass filter for low pass filtering.
  13. 一种计算机存储介质，所述计算机存储介质中存储有计算机可执行指令，该计算机可执行指令配置为执行权利要求1-6任一项所述的矢量毫米波的产生方法。A computer storage medium having stored therein computer executable instructions configured to perform the vector millimeter wave generation method of any of claims 1-6.
PCT/CN2018/077444 2017-02-28 2018-02-27 Vector millimeter wave generation method and apparatus, and computer storage medium WO2018157798A1 (en)

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