CN109314682B - 正交时频空间调制信号的迭代二维均衡 - Google Patents
正交时频空间调制信号的迭代二维均衡 Download PDFInfo
- Publication number
- CN109314682B CN109314682B CN201780021039.3A CN201780021039A CN109314682B CN 109314682 B CN109314682 B CN 109314682B CN 201780021039 A CN201780021039 A CN 201780021039A CN 109314682 B CN109314682 B CN 109314682B
- Authority
- CN
- China
- Prior art keywords
- estimates
- estimate
- symbol
- dimensional
- iterative
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Images
Classifications
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L25/00—Baseband systems
- H04L25/02—Details ; arrangements for supplying electrical power along data transmission lines
- H04L25/03—Shaping networks in transmitter or receiver, e.g. adaptive shaping networks
- H04L25/03006—Arrangements for removing intersymbol interference
- H04L25/03012—Arrangements for removing intersymbol interference operating in the time domain
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L1/00—Arrangements for detecting or preventing errors in the information received
- H04L1/004—Arrangements for detecting or preventing errors in the information received by using forward error control
- H04L1/0045—Arrangements at the receiver end
- H04L1/0047—Decoding adapted to other signal detection operation
- H04L1/005—Iterative decoding, including iteration between signal detection and decoding operation
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L1/00—Arrangements for detecting or preventing errors in the information received
- H04L1/004—Arrangements for detecting or preventing errors in the information received by using forward error control
- H04L1/0045—Arrangements at the receiver end
- H04L1/0054—Maximum-likelihood or sequential decoding, e.g. Viterbi, Fano, ZJ algorithms
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L25/00—Baseband systems
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L25/00—Baseband systems
- H04L25/02—Details ; arrangements for supplying electrical power along data transmission lines
- H04L25/0202—Channel estimation
- H04L25/0204—Channel estimation of multiple channels
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L25/00—Baseband systems
- H04L25/02—Details ; arrangements for supplying electrical power along data transmission lines
- H04L25/03—Shaping networks in transmitter or receiver, e.g. adaptive shaping networks
- H04L25/03006—Arrangements for removing intersymbol interference
- H04L25/03159—Arrangements for removing intersymbol interference operating in the frequency domain
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L25/00—Baseband systems
- H04L25/02—Details ; arrangements for supplying electrical power along data transmission lines
- H04L25/03—Shaping networks in transmitter or receiver, e.g. adaptive shaping networks
- H04L25/03006—Arrangements for removing intersymbol interference
- H04L25/03178—Arrangements involving sequence estimation techniques
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L25/00—Baseband systems
- H04L25/02—Details ; arrangements for supplying electrical power along data transmission lines
- H04L25/03—Shaping networks in transmitter or receiver, e.g. adaptive shaping networks
- H04L25/03006—Arrangements for removing intersymbol interference
- H04L25/03178—Arrangements involving sequence estimation techniques
- H04L25/03248—Arrangements for operating in conjunction with other apparatus
- H04L25/03286—Arrangements for operating in conjunction with other apparatus with channel-decoding circuitry
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L25/00—Baseband systems
- H04L25/02—Details ; arrangements for supplying electrical power along data transmission lines
- H04L25/03—Shaping networks in transmitter or receiver, e.g. adaptive shaping networks
- H04L25/03006—Arrangements for removing intersymbol interference
- H04L25/03178—Arrangements involving sequence estimation techniques
- H04L25/03312—Arrangements specific to the provision of output signals
- H04L25/03318—Provision of soft decisions
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L25/00—Baseband systems
- H04L25/02—Details ; arrangements for supplying electrical power along data transmission lines
- H04L25/08—Modifications for reducing interference; Modifications for reducing effects due to line faults ; Receiver end arrangements for detecting or overcoming line faults
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L27/00—Modulated-carrier systems
- H04L27/26—Systems using multi-frequency codes
- H04L27/2601—Multicarrier modulation systems
- H04L27/2626—Arrangements specific to the transmitter only
- H04L27/2627—Modulators
- H04L27/2639—Modulators using other transforms, e.g. discrete cosine transforms, Orthogonal Time Frequency and Space [OTFS] or hermetic transforms
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L27/00—Modulated-carrier systems
- H04L27/26—Systems using multi-frequency codes
- H04L27/2601—Multicarrier modulation systems
- H04L27/2647—Arrangements specific to the receiver only
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L25/00—Baseband systems
- H04L25/02—Details ; arrangements for supplying electrical power along data transmission lines
- H04L25/03—Shaping networks in transmitter or receiver, e.g. adaptive shaping networks
- H04L25/03006—Arrangements for removing intersymbol interference
- H04L2025/03592—Adaptation methods
- H04L2025/03598—Algorithms
- H04L2025/03611—Iterative algorithms
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L25/00—Baseband systems
- H04L25/02—Details ; arrangements for supplying electrical power along data transmission lines
- H04L25/0202—Channel estimation
- H04L25/0212—Channel estimation of impulse response
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W72/00—Local resource management
- H04W72/30—Resource management for broadcast services
Landscapes
- Engineering & Computer Science (AREA)
- Computer Networks & Wireless Communication (AREA)
- Signal Processing (AREA)
- Power Engineering (AREA)
- Physics & Mathematics (AREA)
- Discrete Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Artificial Intelligence (AREA)
- Error Detection And Correction (AREA)
Abstract
描述一种可用在正交时频空间(OTFS)调制信号的接收器中的迭代二维均衡器。在该均衡器的一个配置中,前向路径根据接收时频域样本和信道估计来生成数据位的估计以及由时延多普勒域处理生成的与数据位的估计相关联的似然度。在反馈方向上,数据位的估计用来生成时间域中的符号估计和自相关矩阵估计。在另一配置中,软符号映射器用在反馈方向上,以用于直接生成反馈输入符号估计,而不必生成数据位的估计。
Description
相关申请的交叉引用
本专利文件要求2016年4月1日提交的标题为“正交时频空间调制信号的迭代二维均衡(ITERATIVE TWO DIMENSIONAL EQUALIZATION OF ORTHOGONAL TIME FREQUENCYSPACE MODULATED SIGNALS)”的第62/317,420号美国临时申请的优先权。上述专利申请的全部内容以引用的方式并入本文中。
技术领域
本文件涉及无线通信,并且更具体地,涉及正交时频空间(OTFS)域调制信号的接收器侧处理。
背景技术
由于无线用户装置的数量和这些装置可以产生或消费的无线数据量迅速增长,因此当前的无线通信网络迅速地用尽带宽以适应数据流量的这种高增长并且向用户提供高质量的服务。
电信行业正在做出各种努力以提出能够满足对无线装置和网络的性能的需求的下一代无线技术。
发明内容
本文件公开了用于迭代二维均衡器的接收器侧技术,其中输入的时频域符号串和信道估计在前馈路径中变换成时延多普勒域并且在时延多普勒域中提取数据位。在反馈路径中,使用辛傅里叶变换将数据位估计变换成时频域,以产生用于下一迭代的符号估计。
在一个示例方面,公开一种用于通过执行迭代二维均衡来从接收信号中恢复信息位的无线通信方法。所述方法包括:在迭代均衡器处接收迭代输入,所述迭代输入包括对接收所述接收信号的无线信道的二维估计、接收符号流、来自前一迭代的符号估计、来自前一迭代的输入自相关矩阵估计;根据迭代输入计算接收符号流的维纳估计(Wienerestimate);使用二维辛傅里叶变换将维纳估计变换成二维时延多普勒网格中的符号估计;估计二维时延多普勒网格中的符号估计的似然度;以及根据似然度生成数据的估计。
在另一示例方面,公开一种用于通过执行迭代二维均衡来从接收信号中恢复信息位的无线通信方法。所述方法包括:在迭代均衡器处接收迭代输入,所述迭代输入包括对接收所述接收信号的无线信道的二维估计、接收符号流、来自前一迭代的符号估计、来自前一迭代的输入自相关矩阵估计;根据迭代输入计算接收符号流的维纳估计;使用二维辛傅里叶变换将维纳估计变换成二维时延多普勒网格中的符号估计;以及通过生成用于下一迭代的符号估计和输入自相关矩阵估计而在反馈方向上进行处理。
本文件中描述这些以及其他特征。
附图说明
本文中描述的附图用来提供进一步理解并且构成本申请的一部分。示例实施例及其描述用来解释本发明的技术而不是限制其范围。
图1示出示例通信网络。
图2示出示例无线通信接收方法的流程图。
图3示出另一示例无线通信接收方法的流程图。
图4示出无线收发器设备的示例。
图5是示出示例2-D迭代均衡器的框图。
图6是示出自迭代2-D均衡器的示例的框图。
具体实施方式
为了使本公开的目的、技术解决方案和优点更明显,下文参考附图详细地描述各种实施例。除非另外指明,否则本文件的实施例和实施例中的特征可以彼此组合。
预期当今的无线技术不能满足无线通信中日益增长的需求。很多行业组织已经开始努力使下一代无线信号互操作性标准标准化。第3代合作伙伴项目(3GPP)作出的第5代(5G)努力就是一个这样的示例,并且在本文中使用以用于说明。然而,所公开的技术可以用于其他无线网络和***。
章节标题用于本文件,包括附录,以增强描述内容的可读性并且绝不将论述受限于相应的章节。
图1示出可以实施所公开的技术的示例通信网络100。网络100可以包括基站发射器,所述基站发射器向一个或多个接收器102发射无线信号s(t)(下行链路信号),接收信号表示为r(t),所述接收器可以位于多种位置,包括在建筑物内部或外部和在移动的车辆中。接收器可以向基站发射上行链路发射,所述基站通常位于无线发射器附近。本文中描述的技术可以在接收器102处或在基站中实施。
2-D均衡器可以用来提取经由OTFS调制在接收的符号上调制的数据位。
1.简介
具有N个发射天线和M个接收天线的***用来在多路径信道上传递信息。信息位b使用前向纠错(FEC)码(诸如,卷积码、涡轮码或LDPC码)编码成编码位c。这些编码位分组成具有q个位的组,所述位可选地交织并映射到在2-D时延多普勒网格上的网格上多路复用的有限星座Ω(诸如,2q-QAM)中的符号x。这些符号通过2-D辛傅里叶逆变换而变换成在时频平面上的交互网格上多路复用的符号X。这些符号是OFDM调制的并且通过N个天线进行发射。在M个天线中接收的信号是OFDM调制的并且在接收器中被处理成2-D时频网格。
在2-D时频网格中,可以针对每个符号(或时频点)单独地编写信道等式,以(i,j)为索引,如下:
其中表示具有期望值零和方差RW的AWGN样本的矢量。2-D均衡器计算来自接收样本Y的发射符号的估计、信道估计H以及噪声方差RW。在非迭代接收器中,所估计的样本经由2-D辛傅里叶变换而变换到时延多普勒域并且随后转换成位似然度,所述位似然度传递到FEC解码器以生成关于信息位的估计
2.迭代2-D均衡器
图5是迭代2-D均衡器501的示例实施例的框图。图5所示的2-D迭代均衡器在2-D均衡器503与FEC MAP解码器505之间通过将信息从一者传递到另一者来进行迭代。在若干迭代之后,MAP解码器输出关于信息位的估计。在各种实施例中,迭代终止标准可以是基于总迭代次数、满足但不超过迭代过程的时间预算、在低于阈值的连续迭代方面的改进等等。
2.1 2-D均衡器的示例实施例(503)
在一些实施例中,2-D均衡器可以被实施为计算X的维纳估计量的仿射MMSE均衡器。
2.2 2-D SFFT(507)
2.3似然度(509)
其中ω∈Ω是星座符号,并且
RZ=ARe
其中i,j=0,…,q-1,s(ω)是与星座符号ω相关联的星座位标签,并且在等式(6)中定义P(ω)j。
2.4解交织器(511)
2.5MAP解码器(505)
最大后验解码器计算信息位的后验概率(APP)并且也计算编码位的外在概率,当使用LLR时,所述外在概率是APP减去先验输入。
2.6交织器(513)
2.7符号映射器(515)
这些概率用于计算星座的预期值和方差:
2.8 2-D SFFT-1(517)
2-D时延多普勒域符号的预期值和方差Rx使用2-D辛傅里叶逆变换以从时延多普勒域变换到时频域而变换成2-D时频域中的和RX。这些用作下一迭代中的2-D均衡器的先前信息。在一些实施例中,由操作507和517使用的2-D变换可以交换。换言之,逆SFFT可以用在操作507中,而SFFT可以用在操作517中。
在一些实施例中,迭代2-D均衡器可以进行操作,以便接收器得到关于时频网格中的已经“被擦除”(例如,未发射或者不可用)的一些资源元素的辅助信息,并且接收器可以忽略它们。接收器可以跳过对这些资源的均衡并且只是直接使用先前的估计作为均衡器的输出。在这种情况下,针对这些资源,等式(2)简单地变成:
3.自迭代2-D均衡器(600)
在图6所示的方案600中,2-D均衡器503以与先前章节中描述的方式类似的方式在2-D时延多普勒域中生成符号估计和Re。然而,这些估计直接馈送到软符号映射器615以与2-D辛傅里叶逆变换517一起生成用于2-D均衡器503的新先前信息。在许多次迭代之后,利用如前面描述的终止标准,这些估计转换成编码位似然度并且传递到FEC解码器605以生成信息位的估计。
如图2的流程图所示,一种用于通过执行迭代二维均衡来从接收信号中恢复信息位的无线通信方法200包括:在迭代均衡器处接收(202)迭代输入,所述迭代输入包括对接收所述接收信号的无线信道的二维估计、接收符号流、来自前一迭代的符号估计、来自前一迭代的输入自相关矩阵估计;根据迭代输入计算(204)接收符号流的维纳估计;使用二维辛傅里叶变换将维纳估计变换(206)成二维时延多普勒网格中的符号估计,所述二维辛傅里叶变换可以是快速SFFT或快速SFFT-1;估计(208)二维时延多普勒网格中的符号估计的似然度;以及根据似然度生成(210)数据的估计。在与图5相关联的描述中进一步描述各种实施例和选项。例如,如关于操作507和517所述,在一些实施例中,彼此互逆的二维辛傅里叶变换可以用于这些操作。换言之,507可以对应于SFFT,而517可以对应于逆SFFT,反之亦然。
在一些实施例中,生成估计可以包括将似然度解交织并且执行纠错。如图5中的示例实施例所示,在一些实施例中,反馈方向处理可以包括方法200的生成用于下一迭代的符号估计和输入自相关矩阵估计。在反馈方向上的处理可以包括:使用似然度来执行软符号映射,从而导致中间符号估计和中间自相关估计;以及通过使用二维辛傅里叶变换的逆变换来变换中间符号估计和中间自相关估计而生成符号估计和输入自相关矩阵估计。在各种实施例中,二维辛傅里叶变换可以是SFFT或SFFT-1。
在一些实施例中,实施方法200的接收器可以得到关于时频网格中的已经“被擦除”(未发射或者不可用)的一些资源元素的辅助信息,并且接收器可以忽略它们。接收器随后可以跳过对它们的均衡并且只是直接使用先前的估计作为均衡器的输出。在这种情况下,针对这些资源,等式(2)简单地变成:
图3示出所公开的一种用于通过执行迭代二维均衡来从接收信号中恢复信息位的无线通信方法300的流程图示例。方法300包括:在迭代均衡器处接收(302)迭代输入,所述迭代输入包括对接收所述接收信号的无线信道的二维估计、接收符号流、来自前一迭代的符号估计、来自前一迭代的输入自相关矩阵估计;根据迭代输入计算(304)接收符号流的维纳估计;使用二维辛傅里叶变换将维纳估计变换(306)成二维时延多普勒网格中的符号估计;以及通过生成用于下一迭代的符号估计和输入自相关矩阵估计而在反馈方向上进行处理(308)。在与图6相关联的描述中进一步描述各种实施例和选项。
图4示出无线收发器设备500的示例。设备500可以用来实施方法200或300。设备500包括处理器502、存储器504,所述存储器在由处理器执行的计算期间存储处理器可执行指令和数据。设备500包括接收和/或发射电路506,例如,包括用于接收或发射信号的无线电频率操作。
应理解,公开了通过在时延多普勒域中执行迭代2D信道均衡实现的用于无线数据接收的技术。
本文件中描述的所公开的以及其他实施例、模块和功能操作可以在数字电子电路或者计算机软件、固件或硬件中实施,包括本文件中公开的结构和它们的结构等效物或者它们中的一者或多者的组合。所公开的和其他实施例可以被实施为一个或多个计算机程序产品,即,在计算机可读介质上编码的计算机程序指令的一个或多个模块,以便由数据处理设备执行或控制数据处理设备的操作。计算机可读介质可以是机器可读存储装置、机器可读存储基底、存储器装置、影响机器可读传播信号的物质的组成,或者它们中的一者或多者的组合。术语“数据处理设备”涵盖用于处理数据的所有设备、装置和机器,例如,包括可编程处理器、计算机或者多个处理器或计算机。除了硬件之外,设备可以包括为进行中的计算机程序创建执行环境的代码,例如,构成处理器固件、协议栈、数据库管理***、操作***或者它们中的一者或多者的组合的代码。传播信号是人工生成的信号,例如,机器生成的电信号、光信号或电磁信号,所述信号被生成以对信息进行编码以便发射到合适的接收器设备。
计算机程序(也被称为程序、软件、软件应用、脚本或代码)可以用任何形式的编程语言编写,包括编译或解释语言,并且它可以按任何形式部署,包括作为独立程序或模块、部件、子例程,或者适用于计算环境的其他单元。计算机程序不必对应于文件***中的文件。程序可以被存储在保存其他程序或数据的文件的一部分中(例如,存储在标记语言文档中的一个或多个脚本)、存储在专用于进行中的程序的单个文件中,或者存储在多个协调文件中(例如,存储一个或多个模块、子程序或者代码的一些部分的文件)。计算机程序可以被部署在一台计算机上或者在位于一个站点或跨多个站点分布并通过通信网络互连在一起的多台计算机上执行。
本文件中描述的过程和逻辑流程可以由一个或多个可编程处理器执行,所述可编程处理器通过对输入数据进行操作并且生成输出来执行一个或多个计算机程序以执行功能。过程和逻辑流也可以由专用逻辑电路来执行,例如,FPGA(现场可编程门阵列)或ASIC(专用集成电路),并且设备也可以实施为所述专用逻辑电路。
适用于执行计算机程序的处理器包括例如通用和专用微处理器,以及任何种类的数字计算机的任何一个或多个处理器。一般而言,处理器将从只读存储器或随机存取存储器或这两者接收指令和数据。计算机的必要元件是用于执行指令的处理器和用于存储指令和数据的一个或多个存储器装置。一般而言,计算机也将包括用于存储数据的一个或多个大容量存储装置,或者可操作地耦合以接收来自大容量存储装置的数据或将数据传输到大容量存储装置,大容量存储装置例如是磁盘、磁光盘或光盘。然而,计算机无需具有此类装置。适于存储计算机程序指令和数据的计算机可读介质包括所有形式的非易失性存储器、介质和存储器装置,包括例如半导体存储器装置,例如,EPROM、EEPROM以及闪存装置;磁盘,例如,内部硬盘或可移动盘;磁光盘;以及CD-ROM和DVD-ROM盘。处理器和存储器可以由专用逻辑电路补充或者并入其中。
尽管本专利文件包含很多具体方面,但这些不应被解释为限制所要求保护的发明或可以要求保护的内容的范围,而是描述专用于特定实施例的特征。在本文件中在各实施例的背景下描述的某些特征也可以在单个实施例中组合地实施。相反,在单个实施例的背景下描述的各种特征也可以在多个实施例中分别实施或者在任何合适的子组合中实施。此外,尽管特征可以在上文描述为在某些组合中起作用并且甚至如最初要求保护的那样,但在一些情况下,所要求保护的组合中的一个或多个特征可以从组合中删除,并且所要求保护的组合可以指向子组合或子组合的变化。类似地,虽然在附图中按特定顺序描绘操作,但这不应被理解为要求此类操作以所示出的特定顺序或按先后顺序执行,或者执行所有示出的操作才能实现期望的结果。
仅公开一些示例和实施方式。基于公开的内容,可以作出对所描述的示例和实施方式以及其他实施方式的变化、更改和改进。
Claims (14)
1.一种用于通过执行迭代二维均衡来从接收信号中恢复信息位的无线通信方法,其包括:
在迭代均衡器处接收迭代输入,所述迭代输入包括对接收所述接收信号的无线信道的二维估计、接收符号流、来自前一迭代的符号估计、来自所述前一迭代的输入自相关矩阵估计;以及
根据所述迭代输入计算所述接收符号流的维纳估计;
使用二维辛傅里叶变换将所述维纳估计变换成二维时延多普勒网格中的符号估计;
估计所述二维时延多普勒网格中的所述符号估计的似然度;以及
根据所述似然度生成所述信息位的估计。
2.根据权利要求1所述的方法,其中生成所述估计包括:
将所述似然度解交织;以及
执行纠错。
3.根据权利要求1所述的方法,还包括:通过生成用于下一迭代的符号估计和输入自相关矩阵估计在反馈方向上进行处理。
4.根据权利要求3所述的方法,其中在所述反馈方向上进行处理包括:
使用所述似然度执行软符号映射,从而生成中间符号估计和中间自相关估计;以及
通过使用二维辛傅里叶变换的逆变换来变换所述中间符号估计和所述中间自相关估计而生成所述符号估计和所述输入自相关矩阵估计。
5.根据权利要求1至4中的任一项所述的方法,其中所述二维辛傅里叶变换是辛快速傅里叶变换(SFFT)。
6.根据权利要求1所述的方法,其中计算所述维纳估计包括:
接收来自所述接收信号的关于被擦除时频资源元素的信息;以及
使用来自反馈方向的先前符号估计作为计算所述维纳估计的输出。
7.一种用于通过执行迭代二维均衡来从接收信号中恢复信息位的无线通信方法,包括:
在迭代均衡器处接收迭代输入,所述迭代输入包括对接收所述接收信号的无线信道的二维估计、接收符号流、来自前一迭代的符号估计、来自所述前一迭代的输入自相关矩阵估计;以及
根据所述迭代输入计算所述接收符号流的维纳估计;
使用二维辛傅里叶变换将所述维纳估计变换成二维时延多普勒网格中的符号估计;以及
通过生成用于下一迭代的符号估计和输入自相关矩阵估计在反馈方向上进行处理。
8.根据权利要求7所述的方法,还包括:
估计所述二维时延多普勒网格中的所述符号估计的似然度,其中,所述似然度基于高斯分布;以及
根据所述似然度生成所述信息位的估计。
9.根据权利要求8所述的方法,其中生成所述信息位的估计包括:
将所述似然度解交织;以及
执行纠错。
10.根据权利要求9所述的方法,其中在所述反馈方向上进行处理包括:
使用所述似然度执行软符号映射,从而生成中间符号估计和中间自相关估计;以及
通过使用二维辛傅里叶变换的逆变换来变换所述中间符号估计和所述中间自相关估计而生成所述符号估计和所述输入自相关矩阵估计。
11.根据权利要求7至10中的任一项所述的方法,其中所述二维辛傅里叶变换是辛快速傅里叶变换(SFFT)。
12.根据权利要求7所述的方法,其中计算所述维纳估计包括:
接收来自所述接收信号的关于被擦除时频资源元素的信息;以及
使用来自反馈方向的先前符号估计作为计算所述维纳估计的输出。
13.一种存储有代码的计算机可读存储介质,所述代码在被执行时致使处理器实施根据权利要求1至12中任一项所述的方法。
14.一种无线通信装置,包括存储指令的存储器和处理器,其中所述指令在被所述处理器执行时致使所述处理器实施根据权利要求1至12中任一项所述的方法。
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CN202111020167.0A CN113726700A (zh) | 2016-04-01 | 2017-03-31 | 正交时频空间调制信号的迭代二维均衡 |
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US201662317420P | 2016-04-01 | 2016-04-01 | |
US62/317,420 | 2016-04-01 | ||
PCT/US2017/025578 WO2017173389A1 (en) | 2016-04-01 | 2017-03-31 | Iterative two dimensional equalization of orthogonal time frequency space modulated signals |
Related Child Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
CN202111020167.0A Division CN113726700A (zh) | 2016-04-01 | 2017-03-31 | 正交时频空间调制信号的迭代二维均衡 |
Publications (2)
Publication Number | Publication Date |
---|---|
CN109314682A CN109314682A (zh) | 2019-02-05 |
CN109314682B true CN109314682B (zh) | 2021-09-21 |
Family
ID=59965340
Family Applications (2)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
CN201780021039.3A Active CN109314682B (zh) | 2016-04-01 | 2017-03-31 | 正交时频空间调制信号的迭代二维均衡 |
CN202111020167.0A Pending CN113726700A (zh) | 2016-04-01 | 2017-03-31 | 正交时频空间调制信号的迭代二维均衡 |
Family Applications After (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
CN202111020167.0A Pending CN113726700A (zh) | 2016-04-01 | 2017-03-31 | 正交时频空间调制信号的迭代二维均衡 |
Country Status (5)
Country | Link |
---|---|
US (2) | US10355887B2 (zh) |
EP (1) | EP3437279B1 (zh) |
KR (1) | KR102276187B1 (zh) |
CN (2) | CN109314682B (zh) |
WO (1) | WO2017173389A1 (zh) |
Families Citing this family (27)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US11943089B2 (en) | 2010-05-28 | 2024-03-26 | Cohere Technologies, Inc. | Modulation and equalization in an orthonormal time-shifting communications system |
US9071286B2 (en) | 2011-05-26 | 2015-06-30 | Cohere Technologies, Inc. | Modulation and equalization in an orthonormal time-frequency shifting communications system |
US10667148B1 (en) | 2010-05-28 | 2020-05-26 | Cohere Technologies, Inc. | Methods of operating and implementing wireless communications systems |
WO2017087706A1 (en) | 2015-11-18 | 2017-05-26 | Cohere Technologies | Orthogonal time frequency space modulation techniques |
CN109845102B (zh) | 2016-03-31 | 2023-07-28 | 凝聚技术公司 | 使用正交时间频率空间调制的导频信号的信道获取 |
EP3437197B1 (en) | 2016-04-01 | 2022-03-09 | Cohere Technologies, Inc. | Tomlinson-harashima precoding in an otfs communication system |
WO2018106731A1 (en) | 2016-12-05 | 2018-06-14 | Cohere Technologies | Fixed wireless access using orthogonal time frequency space modulation |
EP4109983A1 (en) | 2017-04-21 | 2022-12-28 | Cohere Technologies, Inc. | Communication techniques using quasi-static properties of wireless channels |
WO2018200567A1 (en) | 2017-04-24 | 2018-11-01 | Cohere Technologies | Multibeam antenna designs and operation |
WO2019036492A1 (en) | 2017-08-14 | 2019-02-21 | Cohere Technologies | ASSIGNMENT OF TRANSMISSION RESOURCES BY DIVISION OF BLOCKS OF PHYSICAL RESOURCES |
CN111279337B (zh) | 2017-09-06 | 2023-09-26 | 凝聚技术公司 | 一种由无线通***装置实现的无线通信方法 |
CN117040988A (zh) | 2017-09-15 | 2023-11-10 | 凝聚技术公司 | 在正交时频空间信号接收器中实现同步 |
WO2019068053A1 (en) | 2017-09-29 | 2019-04-04 | Cohere Technologies, Inc. | ERROR CORRECTION WITHOUT RETURN CIRCUIT USING LOW DENSITY NON-BINARY PARITY CHECK CODES |
WO2019113046A1 (en) | 2017-12-04 | 2019-06-13 | Cohere Technologies, Inc. | Implementation of orthogonal time frequency space modulation for wireless communications |
WO2019173775A1 (en) | 2018-03-08 | 2019-09-12 | Cohere Technologies, Inc. | Scheduling multi-user mimo transmissions in fixed wireless access systems |
WO2019241589A1 (en) | 2018-06-13 | 2019-12-19 | Cohere Technologies, Inc. | Reciprocal calibration for channel estimation based on second-order statistics |
CN109922020B (zh) * | 2019-03-15 | 2020-10-02 | 北京邮电大学 | 一种计算复杂度低的正交时频空调制的均衡方法 |
US11824637B2 (en) | 2019-05-22 | 2023-11-21 | At&T Intellectual Property I, L.P. | Generating wireless reference signals in a different domain for transmission |
US10979151B2 (en) | 2019-05-22 | 2021-04-13 | At&T Intellectual Property I, L.P. | Multidimensional grid sampling for radio frequency power feedback |
US10886991B2 (en) * | 2019-05-22 | 2021-01-05 | At&T Intellectual Property I, L.P. | Facilitating sparsity adaptive feedback in the delay doppler domain in advanced networks |
US11316554B2 (en) * | 2019-06-05 | 2022-04-26 | Rincon Research Corporation | Multi-antenna detection, localization, and filtering of complex time-and-doppler-shifted signals |
US11050530B2 (en) | 2019-06-27 | 2021-06-29 | At&T Intellectual Property I, L.P. | Generating wireless reference signals in a different domain for transmission with a collapsed time-frequency grid |
CN110677361B (zh) * | 2019-08-28 | 2020-08-28 | 北京邮电大学 | 正交时频空***的信号均衡方法、均衡器及存储介质 |
CN111555780A (zh) * | 2020-01-09 | 2020-08-18 | 北京邮电大学 | 基于正交时频空调制的多天线接收机设计 |
EP4315775A1 (en) * | 2021-03-31 | 2024-02-07 | Cohere Technologies, Inc. | Iterative decoding of orthogonal time frequency space waveforms in the delay-doppler domain |
CN113472707B (zh) * | 2021-09-06 | 2021-11-05 | 中国人民解放军国防科技大学 | 一种联合信道估计与符号检测方法、装置、设备及介质 |
CN114785644A (zh) * | 2022-05-19 | 2022-07-22 | 江苏科技大学 | 一种移动水声otfs通信稀疏信道估计方法 |
Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN104662855A (zh) * | 2012-06-25 | 2015-05-27 | 科希尔技术股份有限公司 | 正交时频移动通信***中的调制和均衡 |
US9071286B2 (en) * | 2011-05-26 | 2015-06-30 | Cohere Technologies, Inc. | Modulation and equalization in an orthonormal time-frequency shifting communications system |
Family Cites Families (180)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB1605262A (en) | 1977-05-25 | 1986-12-17 | Emi Ltd | Representing the position of a reference pattern in a pattern field |
US5083135A (en) | 1990-11-13 | 1992-01-21 | General Motors Corporation | Transparent film antenna for a vehicle window |
US5182642A (en) | 1991-04-19 | 1993-01-26 | General Dynamics Lands Systems Inc. | Apparatus and method for the compression and transmission of multiformat data |
US5956624A (en) | 1994-07-12 | 1999-09-21 | Usa Digital Radio Partners Lp | Method and system for simultaneously broadcasting and receiving digital and analog signals |
US5623511A (en) | 1994-08-30 | 1997-04-22 | Lucent Technologies Inc. | Spread spectrum code pulse position modulated receiver having delay spread compensation |
ZA957858B (en) | 1994-09-30 | 1996-04-22 | Qualcomm Inc | Multipath search processor for a spread spectrum multiple access communication system |
US6356555B1 (en) | 1995-08-25 | 2002-03-12 | Terayon Communications Systems, Inc. | Apparatus and method for digital data transmission using orthogonal codes |
US5831977A (en) | 1996-09-04 | 1998-11-03 | Ericsson Inc. | Subtractive CDMA system with simultaneous subtraction in code space and direction-of-arrival space |
US6275543B1 (en) | 1996-10-11 | 2001-08-14 | Arraycomm, Inc. | Method for reference signal generation in the presence of frequency offsets in a communications station with spatial processing |
US6212246B1 (en) | 1996-11-21 | 2001-04-03 | Dsp Group, Inc. | Symbol-quality evaluation in a digital communications receiver |
US6686879B2 (en) | 1998-02-12 | 2004-02-03 | Genghiscomm, Llc | Method and apparatus for transmitting and receiving signals having a carrier interferometry architecture |
US5955992A (en) | 1998-02-12 | 1999-09-21 | Shattil; Steve J. | Frequency-shifted feedback cavity used as a phased array antenna controller and carrier interference multiple access spread-spectrum transmitter |
US5872542A (en) | 1998-02-13 | 1999-02-16 | Federal Data Corporation | Optically transparent microstrip patch and slot antennas |
EP0966133B1 (en) | 1998-06-15 | 2005-03-02 | Sony International (Europe) GmbH | Orthogonal transformations for interference reduction in multicarrier systems |
US6289063B1 (en) | 1998-09-02 | 2001-09-11 | Nortel Networks Limited | QAM receiver with improved immunity to crosstalk noise |
US6426983B1 (en) | 1998-09-14 | 2002-07-30 | Terayon Communication Systems, Inc. | Method and apparatus of using a bank of filters for excision of narrow band interference signal from CDMA signal |
US6654429B1 (en) * | 1998-12-31 | 2003-11-25 | At&T Corp. | Pilot-aided channel estimation for OFDM in wireless systems |
US6608864B1 (en) | 1999-05-26 | 2003-08-19 | 3Com Corporation | Method and apparatus for fault recovery in a decision feedback equalizer |
FR2794914B1 (fr) | 1999-06-08 | 2002-03-01 | Sagem | Systeme parametrable a entrelacement temporel et frequentiel pour la transmission de donnees numeriques entre stations fixes ou mobiles |
US6985432B1 (en) | 2000-01-28 | 2006-01-10 | Zion Hadad | OFDM communication channel |
US7254171B2 (en) | 2000-01-20 | 2007-08-07 | Nortel Networks Limited | Equaliser for digital communications systems and method of equalisation |
GB0001585D0 (en) * | 2000-01-24 | 2000-03-15 | Radioscape Ltd | Method of designing,modelling or fabricating a communications baseband stack |
EP1260028A2 (en) * | 2000-01-24 | 2002-11-27 | Radioscape Limited | Digital wireless basestation |
US6956814B1 (en) | 2000-02-29 | 2005-10-18 | Worldspace Corporation | Method and apparatus for mobile platform reception and synchronization in direct digital satellite broadcast system |
EP1158710B1 (de) | 2000-05-26 | 2003-11-05 | Alcatel | Verfahren zum Übertragen von synchronen Transportmodulen über ein synchrones Transportnetz |
US6388621B1 (en) | 2000-06-20 | 2002-05-14 | Harris Corporation | Optically transparent phase array antenna |
WO2002045005A1 (en) | 2000-12-01 | 2002-06-06 | Lizardtech, Inc. | Method for lossless encoding of image data by approximating linear transforms and preserving selected properties |
US20050251844A1 (en) | 2001-02-02 | 2005-11-10 | Massimiliano Martone | Blind correlation for high precision ranging of coded OFDM signals |
US6937648B2 (en) * | 2001-04-03 | 2005-08-30 | Yitran Communications Ltd | Equalizer for communication over noisy channels |
US7310304B2 (en) | 2001-04-24 | 2007-12-18 | Bae Systems Information And Electronic Systems Integration Inc. | Estimating channel parameters in multi-input, multi-output (MIMO) systems |
US7058004B2 (en) | 2001-05-07 | 2006-06-06 | University Of South Florida | Communication system using orthogonal wavelet division multiplexing (OWDM) and OWDM-spread spectrum (OWSS) signaling |
CN100414861C (zh) | 2001-05-25 | 2008-08-27 | 明尼苏达大学董事会 | 无线通信网中的空时编码传输 |
JP4119696B2 (ja) | 2001-08-10 | 2008-07-16 | 松下電器産業株式会社 | 送信装置、受信装置及び無線通信方法 |
US7263123B2 (en) | 2001-09-18 | 2007-08-28 | Broadcom Corporation | Fast computation of coefficients for a variable delay decision feedback equalizer |
US7248559B2 (en) | 2001-10-17 | 2007-07-24 | Nortel Networks Limited | Scattered pilot pattern and channel estimation method for MIMO-OFDM systems |
CN1443011A (zh) * | 2002-03-05 | 2003-09-17 | 深圳市中兴通讯股份有限公司上海第二研究所 | 一种用于移动通信***的均衡解调方法 |
US9628231B2 (en) | 2002-05-14 | 2017-04-18 | Genghiscomm Holdings, LLC | Spreading and precoding in OFDM |
GB0212165D0 (en) | 2002-05-27 | 2002-07-03 | Nokia Corp | A wireless system |
US7496619B2 (en) | 2002-06-18 | 2009-02-24 | Vanderbilt University | System and methods of nonuniform data sampling and data reconstruction in shift invariant and wavelet spaces |
US7095709B2 (en) | 2002-06-24 | 2006-08-22 | Qualcomm, Incorporated | Diversity transmission modes for MIMO OFDM communication systems |
US8451933B2 (en) | 2002-07-18 | 2013-05-28 | Coherent Logix, Incorporated | Detection of low-amplitude echoes in a received communication signal |
EP1432168A1 (en) | 2002-12-16 | 2004-06-23 | Urmet Sistemi S.p.a. | Multicarrier CDMA transmission method using Hadamard time-frequency spreading codes, and a transmitter and a receiver for said method |
US6904550B2 (en) * | 2002-12-30 | 2005-06-07 | Motorola, Inc. | Velocity enhancement for OFDM systems |
EP1488589B1 (en) | 2003-03-27 | 2005-08-10 | DoCoMo Communications Laboratories Europe GmbH | Apparatus and method for estimating a plurality of channels |
JP2004294968A (ja) | 2003-03-28 | 2004-10-21 | Kawasaki Microelectronics Kk | 単純マトリクス液晶のマルチラインアドレッシング駆動方法及び装置 |
US7286603B2 (en) | 2003-05-01 | 2007-10-23 | Nokia Corporation | Method and apparatus for increasing data rates in a wideband MC-CDMA telecommunication system |
US9553984B2 (en) | 2003-08-01 | 2017-01-24 | University Of Florida Research Foundation, Inc. | Systems and methods for remotely tuning hearing devices |
EP1511210B1 (en) | 2003-08-28 | 2011-11-09 | Motorola Solutions, Inc. | OFDM channel estimation and tracking for multiple transmit antennas |
US7342981B2 (en) | 2004-01-15 | 2008-03-11 | Ati Technologies Inc. | Digital receiver having adaptive carrier recovery circuit |
US7330501B2 (en) | 2004-01-15 | 2008-02-12 | Broadcom Corporation | Orthogonal normalization for a radio frequency integrated circuit |
JP3802031B2 (ja) | 2004-02-16 | 2006-07-26 | パイオニア株式会社 | 受信装置及び受信方法 |
US7831883B2 (en) * | 2004-04-02 | 2010-11-09 | Nortel Networks Limited | LDPC encoders, decoders, systems and methods |
US7668075B2 (en) | 2004-04-06 | 2010-02-23 | Texas Instruments Incorporated | Versatile system for dual carrier transformation in orthogonal frequency division multiplexing |
CN1998206A (zh) * | 2004-05-28 | 2007-07-11 | 皇家飞利浦电子股份有限公司 | 在具有高多普勒频移的ofdm***中的信道估算 |
US7656786B2 (en) | 2004-06-28 | 2010-02-02 | The Board Of Trustees Of The Leland Stanford Junior University | Method for pulse shape design for OFDM |
US20060008021A1 (en) | 2004-06-30 | 2006-01-12 | Nokia Corporation | Reduction of self-interference for a high symbol rate non-orthogonal matrix modulation |
KR100590486B1 (ko) | 2004-07-29 | 2006-06-19 | 에스케이 텔레콤주식회사 | Tdd 방식과 ofdm 변조 방식을 이용하는 이동통신망의 광중계기에서 전송 신호를 분리하는 스위칭타이밍 신호 생성 방법 및 시스템 |
US7564933B2 (en) * | 2004-11-30 | 2009-07-21 | The Regents Of The University Of California | Method and system for near optimal iterative detection of the 2-dimensional ISI channel |
US7463583B2 (en) | 2005-03-03 | 2008-12-09 | Stmicroelectronics Ltd. | Wireless LAN data rate adaptation |
WO2006102745A1 (en) | 2005-03-30 | 2006-10-05 | Nortel Networks Limited | Method and system for combining ofdm and transformed ofdm |
US7840625B2 (en) | 2005-04-07 | 2010-11-23 | California Institute Of Technology | Methods for performing fast discrete curvelet transforms of data |
US7991088B2 (en) | 2005-11-15 | 2011-08-02 | Tommy Guess | Iterative interference cancellation using mixed feedback weights and stabilizing step sizes |
US7646833B1 (en) * | 2005-05-23 | 2010-01-12 | Marvell International Ltd. | Channel equalization in receivers |
US8730877B2 (en) | 2005-06-16 | 2014-05-20 | Qualcomm Incorporated | Pilot and data transmission in a quasi-orthogonal single-carrier frequency division multiple access system |
JPWO2007004297A1 (ja) | 2005-07-06 | 2009-01-22 | パナソニック株式会社 | 送信機及び送信方法 |
US8073063B2 (en) | 2005-08-23 | 2011-12-06 | Nortel Networks Limited | Methods and systems for orthogonal frequency division multiplexing (OFDM) multiple zone partitioning |
FI20055516A0 (fi) | 2005-09-28 | 2005-09-28 | Nokia Corp | Tiedonsiirto viestintäjärjestelmässä |
US8990280B2 (en) | 2005-09-30 | 2015-03-24 | Nvidia Corporation | Configurable system for performing repetitive actions |
US8687689B2 (en) | 2005-10-25 | 2014-04-01 | William Marsh Rice University | Method and apparatus for on-line compressed sensing |
KR100996023B1 (ko) | 2005-10-31 | 2010-11-22 | 삼성전자주식회사 | 다중 안테나 통신 시스템에서 데이터 송수신 장치 및 방법 |
KR100681760B1 (ko) * | 2005-11-24 | 2007-02-15 | 이오넥스 주식회사 | 복수의 등화기를 구비한 수신기 |
WO2008063691A2 (en) | 2006-04-12 | 2008-05-29 | William Marsh Rice University | Apparatus and method for compressive sensing radar imaging |
JP5061182B2 (ja) | 2006-04-24 | 2012-10-31 | 韓國電子通信研究院 | 適応型チャンネル推定が可能なパイロットパターン生成方法、該パイロットパターンを利用した送受信方法及びその装置 |
JP5017736B2 (ja) | 2006-04-27 | 2012-09-05 | テキサス インスツルメンツ インコーポレイテッド | 無線通信システムにおいて基準信号を割り当てるための方法及び装置 |
JP2007300383A (ja) | 2006-04-28 | 2007-11-15 | Fujitsu Ltd | Mimo−ofdm送信機 |
US7970081B2 (en) * | 2006-05-11 | 2011-06-28 | Telefonaktiebolaget Lm Ericsson (Publ) | Delay-doppler channel response demodulation method and apparatus |
US8712061B2 (en) | 2006-05-17 | 2014-04-29 | Creative Technology Ltd | Phase-amplitude 3-D stereo encoder and decoder |
US20070286312A1 (en) * | 2006-06-01 | 2007-12-13 | Nokia Corporation | Apparatus, method and computer program product providing iterative recursive least squares (RLS) algorithm for coded MIMO systems |
US7392018B1 (en) | 2006-06-13 | 2008-06-24 | Saraband Wireless, Inc. | Channel estimation applique for wireless communications |
US7689049B2 (en) | 2006-08-31 | 2010-03-30 | Donald Martin Monro | Matching pursuits coding of data |
EP2067327B1 (en) | 2006-09-11 | 2015-04-15 | Telefonaktiebolaget LM Ericsson (publ) | Detection of time-frequency hopping patterns |
US20100027608A1 (en) | 2006-09-29 | 2010-02-04 | Paolo Priotti | Scrambled multicarrier transmission |
EP2084844A2 (en) | 2006-10-23 | 2009-08-05 | LG Electronics Inc. | Method for transmitting data using cyclic delay diversity |
US8885744B2 (en) | 2006-11-10 | 2014-11-11 | Qualcomm Incorporated | Providing antenna diversity in a wireless communication system |
CN101574010B (zh) | 2007-01-05 | 2010-12-08 | 华为技术有限公司 | 二维参考信号序列 |
WO2008097629A2 (en) | 2007-02-06 | 2008-08-14 | Interdigital Technology Corporation | Method and apparatus for multiple-input multiple-output feedback generation |
US7929510B2 (en) * | 2007-02-28 | 2011-04-19 | Alcatel-Lucent Usa Inc. | Method of scaling soft symbols of an uplink enhanced dedicated transport channel (E-DCH) and method for enabling use of a log-map turbo decoding algorithm for processing the E-DCH |
CN101682316B (zh) | 2007-05-25 | 2012-06-13 | 艾利森电话股份有限公司 | 利用根奈奎斯特、自变换脉冲形状进行通信的方法和装置 |
US20080310383A1 (en) | 2007-06-15 | 2008-12-18 | Sharp Laboratories Of America, Inc. | Systems and methods for designing a sequence for code modulation of data and channel estimation |
US9966989B2 (en) | 2007-10-17 | 2018-05-08 | Applied Radar, Inc. | Array antenna system and spread spectrum beamformer method |
US7864836B1 (en) * | 2007-10-31 | 2011-01-04 | Samsung Electronics Co., Ltd. | Adaptive orthogonal frequency division multiplexing (OFDM) equalizers, OFDM receivers including the same, and methods thereof |
US20090122854A1 (en) | 2007-11-14 | 2009-05-14 | The Hong Kong University Of Science And Technology | Frequency domain equalization with transmit precoding for high speed data transmission |
FR2924884B1 (fr) | 2007-12-11 | 2009-12-04 | Eads Secure Networks | Reduction d'interferences dans un signal a repartition de frequences orthogonales |
US8229017B1 (en) | 2007-12-13 | 2012-07-24 | Marvell International Ltd. | Transmit beamforming utilizing channel estimation matrix decomposition feedback in a wireless MIMO communication system |
US8009750B2 (en) | 2007-12-21 | 2011-08-30 | Qualcomm, Incorporated | Receiver window shaping in OFDM to mitigate narrowband interference |
US8108438B2 (en) | 2008-02-11 | 2012-01-31 | Nir Asher Sochen | Finite harmonic oscillator |
CN101350801B (zh) | 2008-03-20 | 2012-10-10 | 中兴通讯股份有限公司 | 长循环前缀帧结构下行专用导频与物理资源块的映射方法 |
US8488694B2 (en) | 2008-05-06 | 2013-07-16 | Industrial Technology Research Institute | System and method for pilot design |
US8509324B2 (en) | 2008-07-08 | 2013-08-13 | Qualcomm Incorporated | Methods and systems for reducing PAPR of an OFDM signal |
KR101646249B1 (ko) | 2008-08-11 | 2016-08-16 | 엘지전자 주식회사 | 무선 통신 시스템에서 정보 전송 방법 및 장치 |
EP2316209B1 (en) | 2008-08-20 | 2017-05-03 | Telefonaktiebolaget LM Ericsson (publ) | Precoder for a communication system and method used in said communication system |
US20110286502A1 (en) | 2008-09-12 | 2011-11-24 | Panasonic Corporation | Wireless transmitter and precoding method |
AU2009217407C1 (en) | 2008-10-09 | 2015-07-23 | Sony Corporation | New frame and data pattern structure for multi-carrier systems |
EP2209220A1 (en) | 2009-01-19 | 2010-07-21 | ST-Ericsson (France) SAS | Process for beamforming data to be transmitted by a base station in a MU-MIMO system and apparatus for performing the same |
GB2467143B (en) | 2009-01-22 | 2011-04-06 | Toshiba Res Europ Ltd | Wireless commication method and apparatus |
CN102341984B (zh) | 2009-01-26 | 2015-01-14 | 吉尼瓦洁净技术公司 | 电源输送网络中校正功率因子及减少失真与噪音的方法和仪器 |
US8437775B2 (en) | 2009-03-27 | 2013-05-07 | Telefonaktiebolaget Lm Ericsson (Publ) | Methods and arrangements for enabling estimation of a position of a mobile terminal |
US8044851B2 (en) * | 2009-04-17 | 2011-10-25 | Mstar Semiconductor, Inc. | Method for suppressing multipath errors in a satellite navigation receiver |
US8111149B2 (en) | 2009-04-30 | 2012-02-07 | Empire Technology Development Llc | Measurement-based wireless device system level management |
US8422541B2 (en) | 2009-05-29 | 2013-04-16 | Alcatel Lucent | Channel estimation in a multi-channel communication system using pilot signals having quasi-orthogonal subpilots |
US8630426B2 (en) | 2009-11-06 | 2014-01-14 | Motorola Solutions, Inc. | Howling suppression using echo cancellation |
CN102598745A (zh) | 2009-11-13 | 2012-07-18 | 交互数字专利控股公司 | 为无线局域网提供vht频率再用的方法和设备 |
WO2011061031A1 (en) | 2009-11-17 | 2011-05-26 | Sony Corporation | Transmitter and transmission method for broadcasting data in a broadcasting system providing incremental redundancy |
US8724798B2 (en) | 2009-11-20 | 2014-05-13 | Adobe Systems Incorporated | System and method for acoustic echo cancellation using spectral decomposition |
WO2011063572A1 (zh) | 2009-11-30 | 2011-06-03 | 西安西谷微功率数据技术有限责任公司 | 有源电子标签及其应用***和方法 |
US8359515B2 (en) | 2009-12-02 | 2013-01-22 | Lsi Corporation | Forward substitution for error-correction encoding and the like |
JP2011127910A (ja) | 2009-12-15 | 2011-06-30 | Hitachi Automotive Systems Ltd | レーダ装置及びレーダシステム |
GB2478005B (en) | 2010-02-23 | 2017-06-14 | Univ Court Univ Of Edinburgh | Enhanced spatial modulation |
TWI581578B (zh) | 2010-02-26 | 2017-05-01 | 新力股份有限公司 | 編碼器及提供遞增冗餘之編碼方法 |
JP5477481B2 (ja) | 2010-03-29 | 2014-04-23 | 株式会社村田製作所 | 無線通信システムにおける整数周波数オフセット推定のための方法および装置 |
WO2011135472A2 (en) | 2010-04-27 | 2011-11-03 | Technion Research & Development Foundation Ltd. | Multi-channel sampling of pulse streams at the rate of innovation |
CN102237945A (zh) | 2010-05-06 | 2011-11-09 | 松下电器产业株式会社 | 基于正交编码的码分复用方法、码分复用设备和解复用设备 |
US8588808B2 (en) | 2010-05-24 | 2013-11-19 | Nice-Systems Ltd. | Method and system for estimation of mobile station velocity in a cellular system based on geographical data |
US9083595B2 (en) * | 2010-05-28 | 2015-07-14 | Cohere Technologies, Inc. | Signal modulation method resistant to echo reflections and frequency offsets |
US9668148B2 (en) * | 2010-05-28 | 2017-05-30 | Cohere Technologies, Inc. | OTFS methods of data channel characterization and uses thereof |
US8976851B2 (en) | 2011-05-26 | 2015-03-10 | Cohere Technologies, Inc. | Modulation and equalization in an orthonormal time-frequency shifting communications system |
US8547988B2 (en) | 2010-05-28 | 2013-10-01 | Ronny Hadani | Communications method employing orthonormal time-frequency shifting and spectral shaping |
US9130638B2 (en) | 2011-05-26 | 2015-09-08 | Cohere Technologies, Inc. | Modulation and equalization in an orthonormal time-frequency shifting communications system |
US9071285B2 (en) | 2011-05-26 | 2015-06-30 | Cohere Technologies, Inc. | Modulation and equalization in an orthonormal time-frequency shifting communications system |
US9444514B2 (en) | 2010-05-28 | 2016-09-13 | Cohere Technologies, Inc. | OTFS methods of data channel characterization and uses thereof |
US8396440B2 (en) * | 2010-06-22 | 2013-03-12 | Qualcomm Incorporated | Signal reception method and apparatus for non-stationary channels |
WO2012064100A2 (ko) | 2010-11-09 | 2012-05-18 | 엘지전자 주식회사 | 무선통신 시스템에서 전력상태보고를 전송하기 위한 방법 및 이를 위한 단말 장치 |
US8892048B1 (en) | 2010-12-01 | 2014-11-18 | Netblazr Inc. | Transparent multi-element antenna |
WO2012074449A1 (en) | 2010-12-03 | 2012-06-07 | Telefonaktiebolaget L M Ericsson (Publ) | Method and arrangement for mitigating inter -cell interference on transmission of uplink control information |
US8428165B2 (en) | 2010-12-30 | 2013-04-23 | Mitsubishi Electric Research Laboratories, Inc. | Method and system for decoding OFDM signals subject to narrowband interference |
US20120213098A1 (en) | 2011-02-21 | 2012-08-23 | Future Wireless Tech LLC | Real-time and synchronization Internet of things analyzer System Architecture |
TWI562560B (en) | 2011-05-09 | 2016-12-11 | Sony Corp | Encoder and encoding method providing incremental redundancy |
US9031141B2 (en) | 2011-05-26 | 2015-05-12 | Cohere Technologies, Inc. | Modulation and equalization in an orthonormal time-frequency shifting communications system |
US9294315B2 (en) | 2011-05-26 | 2016-03-22 | Cohere Technologies, Inc. | Modulation and equalization in an orthonormal time-frequency shifting communications system |
US9590779B2 (en) | 2011-05-26 | 2017-03-07 | Cohere Technologies, Inc. | Modulation and equalization in an orthonormal time-frequency shifting communications system |
CN107277510B (zh) * | 2011-07-19 | 2019-05-28 | 太格文-Ii有限责任公司 | 编码解码装置 |
US8675792B2 (en) * | 2011-09-07 | 2014-03-18 | Intel Mobile Communications GmbH | Method of Doppler spread estimation |
US8737305B2 (en) | 2011-09-25 | 2014-05-27 | Lg Electronics Inc. | Method for allocating resources in broadband wireless access system |
BR112014007959A2 (pt) | 2011-10-03 | 2017-06-13 | Intel Corp | mecanismos para comunicação de dispositivo para dispositivo |
US8977136B2 (en) * | 2011-12-19 | 2015-03-10 | Technion Research And Development Foundation Ltd. | Carrier phase estimation for optically coherent QPSK based on wiener-optimal and adaptive multi-symbol delay detection (MSDD) |
EP2608474B1 (en) * | 2011-12-23 | 2018-09-05 | Vodafone Holding GmbH | Method and transmitter/receiver for data transmission with flexible exploitation of time and frequency diversity |
FR2985134A1 (fr) | 2011-12-23 | 2013-06-28 | France Telecom | Procede d'emission d'au moins un signal multi-porteuse forme de symboles ofdm-oqam |
US8760782B1 (en) * | 2012-02-24 | 2014-06-24 | Western Digital Technologies, Inc. | Methods and devices for joint two-dimensional self-iterating equalization and detection |
JP6654041B2 (ja) | 2012-03-26 | 2020-02-26 | コヒア テクノロジーズ, インコーポレイテッドCohere Technologies, Inc. | エコー反射および周波数オフセットに耐性のある信号変調方法 |
JP5851914B2 (ja) | 2012-03-30 | 2016-02-03 | 富士通株式会社 | 移動局位置検出方法、移動通信システム、および移動局位置情報管理装置 |
US9042428B2 (en) * | 2012-05-04 | 2015-05-26 | Telefonaktiebolaget L M Ericsson (Publ) | Efficient frequency domain (FD) MMSE equalization weight updates in a multi-stage parallel interference cancellation receiver |
GB2501932B (en) | 2012-05-11 | 2014-09-17 | Toshiba Res Europ Ltd | A wireless communications apparatus, a method and a communication system for performing relay selection |
US10003487B2 (en) | 2013-03-15 | 2018-06-19 | Cohere Technologies, Inc. | Symplectic orthogonal time frequency space modulation system |
US10411843B2 (en) | 2012-06-25 | 2019-09-10 | Cohere Technologies, Inc. | Orthogonal time frequency space communication system compatible with OFDM |
US10090972B2 (en) | 2012-06-25 | 2018-10-02 | Cohere Technologies, Inc. | System and method for two-dimensional equalization in an orthogonal time frequency space communication system |
US9967758B2 (en) | 2012-06-25 | 2018-05-08 | Cohere Technologies, Inc. | Multiple access in an orthogonal time frequency space communication system |
US9929783B2 (en) | 2012-06-25 | 2018-03-27 | Cohere Technologies, Inc. | Orthogonal time frequency space modulation system |
US9912507B2 (en) | 2012-06-25 | 2018-03-06 | Cohere Technologies, Inc. | Orthogonal time frequency space communication system compatible with OFDM |
US10469215B2 (en) | 2012-06-25 | 2019-11-05 | Cohere Technologies, Inc. | Orthogonal time frequency space modulation system for the Internet of Things |
US9385905B2 (en) | 2013-03-04 | 2016-07-05 | Intel Corporation | Block-based time-frequency interleaving and de-interleaving |
US9319250B2 (en) * | 2013-03-15 | 2016-04-19 | Jonathan Kanter | Turbo decoding techniques |
US9325333B2 (en) * | 2013-03-15 | 2016-04-26 | The Regents Of The University Of California | Fast frequency estimator |
KR20140142915A (ko) | 2013-06-05 | 2014-12-15 | 삼성전자주식회사 | 통신 시스템에서 핸드오버 시점을 결정하는 방법 및 장치 |
WO2015080649A1 (en) | 2013-11-27 | 2015-06-04 | Telefonaktiebolaget L M Ericsson (Publ) | Sending and detecting synchronization signals and an associated information message |
US9967757B2 (en) | 2013-12-17 | 2018-05-08 | Adaptive Spectrum And Signal Alignment, Inc. | Systems methods and apparatuses for implementing distributed wireless data sharing and control systems |
WO2015156634A1 (ko) * | 2014-04-10 | 2015-10-15 | 엘지전자(주) | 무선 통신 시스템에서 단말간 동기화를 수행하기 위한 방법 및 장치 |
US9560548B2 (en) | 2014-06-25 | 2017-01-31 | General Electric Company | Dynamic adjustment of a wireless network media access control parameter |
WO2016014596A1 (en) | 2014-07-21 | 2016-01-28 | Cohere Technologies, Inc | Methods of operating and implementing wireless otfs communciations systems |
WO2016073988A1 (en) | 2014-11-07 | 2016-05-12 | Parallel Wireless, Inc. | Self-calibrating and self-adjusting network |
EP3940975A1 (en) | 2015-04-30 | 2022-01-19 | Cohere Technologies, Inc. | Orthogonal time frequency space modulation system for the internet of things |
WO2016183230A1 (en) | 2015-05-11 | 2016-11-17 | Cohere Technologies | Systems and methods for symplectic orthogonal time frequency shifting modulation and transmission of data |
US10090973B2 (en) | 2015-05-11 | 2018-10-02 | Cohere Technologies, Inc. | Multiple access in an orthogonal time frequency space communication system |
CN107925446B (zh) | 2015-05-11 | 2021-03-16 | 凝聚技术股份有限公司 | 正交时间频率空间调制*** |
US10574317B2 (en) | 2015-06-18 | 2020-02-25 | Cohere Technologies, Inc. | System and method for providing wireless communication services using configurable broadband infrastructure shared among multiple network operators |
US9866363B2 (en) | 2015-06-18 | 2018-01-09 | Cohere Technologies, Inc. | System and method for coordinated management of network access points |
KR20180030546A (ko) | 2015-06-22 | 2018-03-23 | 코히어 테크널러지스, 아이엔씨. | 심플렉틱 직교 시간 주파수 공간 변조 시스템 |
CN112532558A (zh) | 2015-06-27 | 2021-03-19 | 凝聚技术股份有限公司 | 与ofdm兼容的正交时频空间通信*** |
US10892547B2 (en) | 2015-07-07 | 2021-01-12 | Cohere Technologies, Inc. | Inconspicuous multi-directional antenna system configured for multiple polarization modes |
CN108141294B (zh) | 2015-07-12 | 2020-03-03 | 凝聚技术股份有限公司 | 与ofdm兼容的正交时间频率空间通信*** |
US20170310510A1 (en) * | 2016-04-25 | 2017-10-26 | Fujitsu Limited | Q-based zero-forcing adaptive control |
-
2017
- 2017-03-31 CN CN201780021039.3A patent/CN109314682B/zh active Active
- 2017-03-31 KR KR1020187030305A patent/KR102276187B1/ko active IP Right Grant
- 2017-03-31 CN CN202111020167.0A patent/CN113726700A/zh active Pending
- 2017-03-31 WO PCT/US2017/025578 patent/WO2017173389A1/en active Application Filing
- 2017-03-31 EP EP17776862.9A patent/EP3437279B1/en active Active
-
2018
- 2018-10-01 US US16/148,922 patent/US10355887B2/en active Active
-
2019
- 2019-07-15 US US16/512,055 patent/US10673659B2/en active Active
Patent Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US9071286B2 (en) * | 2011-05-26 | 2015-06-30 | Cohere Technologies, Inc. | Modulation and equalization in an orthonormal time-frequency shifting communications system |
CN104662855A (zh) * | 2012-06-25 | 2015-05-27 | 科希尔技术股份有限公司 | 正交时频移动通信***中的调制和均衡 |
Non-Patent Citations (1)
Title |
---|
Minimum Mean-Square-Error Equalization using Priors for Two一Dimensional Intersymbol Interference.;SINGLA N ET AL.;《ARXIV.0 RG,CORNELL UNIVERSITY LIBRARY,》;20050905;全文 * |
Also Published As
Publication number | Publication date |
---|---|
US20190342126A1 (en) | 2019-11-07 |
WO2017173389A1 (en) | 2017-10-05 |
US20190036741A1 (en) | 2019-01-31 |
KR102276187B1 (ko) | 2021-07-12 |
EP3437279B1 (en) | 2021-03-03 |
CN113726700A (zh) | 2021-11-30 |
CN109314682A (zh) | 2019-02-05 |
KR20190008848A (ko) | 2019-01-25 |
EP3437279A1 (en) | 2019-02-06 |
US10673659B2 (en) | 2020-06-02 |
US10355887B2 (en) | 2019-07-16 |
EP3437279A4 (en) | 2019-10-23 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
CN109314682B (zh) | 正交时频空间调制信号的迭代二维均衡 | |
US11817987B2 (en) | Digital communication using dispersed orthogonal time frequency space modulated signals | |
US11102034B2 (en) | Lattice reduction in orthogonal time frequency space modulation | |
US10938602B2 (en) | Iterative channel estimation and equalization with superimposed reference signals | |
US9806912B2 (en) | Methods and devices for channel estimation and OFDM receiver | |
US8948317B2 (en) | Receiver apparatus, reception method, communication system, and communication method | |
MXPA06010073A (es) | Canal iterativo y calculo de interferencia y descodificacion. | |
JP5400857B2 (ja) | Ldpc復号化のための装置、方法、および受信端末 | |
JP7153122B2 (ja) | 送信装置及び受信装置 | |
CN105099968A (zh) | 一种多径信道中的超奈奎斯特速率通信*** | |
US11943081B2 (en) | Method of receiving a transmitted signal over a time-varying channel and receiver thereof | |
Baek et al. | A new data pilot-aided channel estimation scheme for fast time-varying channels in IEEE 802.11 p systems | |
US9853700B2 (en) | Wireless transmission system and reception device | |
US20240195660A1 (en) | Iterative decoding of orthogonal time frequency space waveforms in the delay-doppler domain | |
US9071471B2 (en) | Low-complexity estimation of QAM symbols and constellations | |
WO2016092323A1 (en) | Estimating data symbols from a filter bank multicarrier (fbmc) signal | |
Bakulin et al. | Low-complexity iterative MIMO detection based on turbo-MMSE algorithm | |
JP2019501582A (ja) | 高次qam信号を復調するための方法およびシステム | |
CN101394188B (zh) | 一种低密度奇偶校验码与4qam-nr码级联的解码*** | |
Peng et al. | An improved iterative channel estimation based LTE downlink | |
Zhang et al. | Blind known interference cancellation with parallel real valued belief propagation algorithm | |
Jeong et al. | Doppler spread and its compensation by FDE and turbo code | |
Bacci et al. | Iterative Channel Estimation for Nonbinary LDPC‐Coded OFDM Signals | |
Ryu et al. | An efficient decision feedback equalizer combining the LDPC code in cellular relay system | |
CN114978843A (zh) | 一种基于译码辅助的ofdm***时变信道追踪方法 |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
PB01 | Publication | ||
PB01 | Publication | ||
SE01 | Entry into force of request for substantive examination | ||
SE01 | Entry into force of request for substantive examination | ||
GR01 | Patent grant | ||
GR01 | Patent grant |