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1. 发明申请

WO2022175846A1 DETECTOR FOR FASTER THAN NYQUIST TRANSMITTED DATA SYMBOLS 审中-公开
公开(公告)号：WO2022175846A1
公开(公告)日：2022-08-25
申请号：PCT/IB2022/051391
申请日：2022-02-16
申请人： CARLETON UNIVERSITY
发明人： IBRAHIM, Ahmed Mohamed Ali , BEDEER, Ebrahim , YANIKOMEROGLU, Halim
IPC分类号： H03M13/39
摘要： Systems and methods relating to estimating data symbols encoded in a received signal that has been transmitted at a faster than Nyquist rate. The present invention uses a heuristic method for non-convex problems and involves an input matrix and received samples from the received signal. These are preconditioned and the preconditioned input matrix is factorized. The method then iterates a three-step process that estimates the sequence of data symbols based on the current estimate, the preconditioned input matrix, the preconditioned samples vector, a multiplier vector, and an auxiliary vector. The process then calculates the next multiplier vector and the next auxiliary vector. If the result indicates a minimum as compared to the best estimate, then the result is used as the best estimate. Multiple iterations of the process are performed, and the multiple iterations are repeated for multiple random initializations of the estimate.

2. 发明申请

WO2021188513A1 LIST DECODING OF POLARIZATION-ADJUSTED CONVOLUTIONAL CODES 审中-公开
公开(公告)号：WO2021188513A1
公开(公告)日：2021-09-23
申请号：PCT/US2021/022526
申请日：2021-03-16
申请人： THE REGENTS OF THE UNIVERSITY OF CALIFORNIA
发明人： YAO, Hanwen , FAZELI CHAGHOOSHI, Arman , VARDY, Alexander
IPC分类号： H03M13/23 , H03M13/39 , H03M13/41
摘要： Devices, systems and methods for list decoding of polarization-adjusted convolutional (PAC) codes are described. One example method for improving error correction in a decoder for data in a communication channel includes receiving a noisy codeword, the codeword having been generated using a polarization-adjusted convolutional (PAC) code and provided to the communication channel prior to reception by the decoder, and performing PAC list decoding on the noisy codeword, wherein an encoding operation of the PAC code comprises a convolutional precoding operation that generates one or more dynamically frozen bits, and wherein the PAC list decoding comprises extending, based on the one or more dynamically frozen bits, at least two paths of a plurality of paths in the PAC list decoding differently and independently.

3. 发明申请

WO2020165593A1 TELECOMMUNICATIONS METHOD 审中-公开
公开(公告)号：WO2020165593A1
公开(公告)日：2020-08-20
申请号：PCT/GB2020/050339
申请日：2020-02-13
申请人： AIRBUS DEFENCE AND SPACE LIMITED
发明人： WANG, Jinfei , DODGSON, Terence , MA, Yi , XUE, Songyan
IPC分类号： H04L1/00 , H03M13/23 , H03M13/39 , H03M13/00
摘要： There is provided a method of telecommunications comprising the following steps: receiving (13) an encoded data block having a plurality of values; dividing (15) the received encoded data block into a plurality of received segments, each received segment comprising at least two of the values; decoding (17) each received segment by providing, for each received segment, a plurality of estimated encoded sequences, each estimated encoded sequence comprising at least two data units; merging (19) estimated encoded sequences for consecutive segments to provide a plurality of candidate sequences; and selecting (23) one of the plurality of candidate sequences by performing (21) a closest fit calculation between the received encoded data block and each of the candidate sequences. The method is suitable for use in software-defined radios.

4. 发明申请

WO2019201227A1 DECISION FEED-FORWARD REDUCED-STATE SEQUENCE DETECTION 审中-公开
公开(公告)号：WO2019201227A1
公开(公告)日：2019-10-24
申请号：PCT/CN2019/082807
申请日：2019-04-16
申请人： HUAWEI TECHNOLOGIES CO., LTD.
发明人： SHAKIBA, Mohammad Hossein
IPC分类号： H03M13/39
摘要： Systems and methods are disclosed for detecting sequences of symbols in a received signal in the presence of inter-symbol interference. Maximum Likelihood Sequence Detection (MLSD) is a known method for optimum detection of such sequences. To reduce the complexity of the MLSD, a Reduced-State Sequence Detection (RSSD) technique has been considered based on partitioning the states of the MLSD. In this approach, a simplified sequence detector is placed within a global decision feedback loop. The disclosed architecture shortens the feedback loop by moving the sequence detector outside the loop and converting the interaction between the two to a feed-forward manner. This is achieved through slicing the signal and closing a nested loop around the sliced bins. A further variant simplifies the detector even more by reducing the number of bins.

5. 发明申请

WO2017196117A2 SCHEME FOR COMMUNICATION USING INTEGER-FORCING SCHEME IN WIRELESS COMMUNICATION SYSTEM 审中-公开
标题翻译：在无线通信系统中使用集成化方案进行通信的方案
公开(公告)号：WO2017196117A2
公开(公告)日：2017-11-16
申请号：PCT/KR2017/004931
申请日：2017-05-12
申请人： SAMSUNG ELECTRONICS CO., LTD.
发明人： JANG, Min , CHAE, Sung-Ho , JEONG, Cheol
IPC分类号： H04L27/34 , H04L1/00 , H03M13/39
CPC分类号： H04L1/0057 , H04L1/0041 , H04L1/0045 , H04L1/0058 , H04L25/03254 , H04L25/0391 , H04L27/34 , H04L2025/0342
摘要： A method for receiving a signal by integer forcing in a wireless communication system is provided. The method includes receiving one or more signals through a plurality of antennas, filtering the received one or more signals using a forcing matrix, generating codewords by remapping the filtered one or more signals, acquiring a summed codeword by performing a modulo operation on the codewords, decoding the summed codeword, and acquiring original codewords by performing an inversion operation on the decoded summed codeword.
摘要翻译：提供了一种用于在无线通信系统中通过整数强制来接收信号的方法。该方法包括通过多个天线接收一个或多个信号，使用强制矩阵对接收到的一个或多个信号进行滤波，通过重新映射经滤波的一个或多个信号来生成码字，通过对码字执行模运算来获得求和码字，解码求和的码字，并通过对解码的求和码字执行反演操作来获取原始码字。

6. 发明申请

WO2017164817A1 JOINT DETECTOR/DECODER DEVICES AND JOINT DETECTION/DECODING METHODS 审中-公开
标题翻译：联合检测器/解码器设备和联合检测/解码方法
公开(公告)号：WO2017164817A1
公开(公告)日：2017-09-28
申请号：PCT/SG2017/050146
申请日：2017-03-23
申请人： AGENCY FOR SCIENCE, TECHNOLOGY AND RESEARCH
发明人： ALAPPAT, Vintu Jose , CHAN, Kheong Sann
IPC分类号： H03M13/41 , H03M13/39 , H04L1/00
摘要： There is provided a joint detector/decoder device including an input circuit configured to receive an input signal including a bit sequence, a soft information determining circuit configured to determine soft information with respect to the received bit sequence, a survivor splitting circuit configured to produce a plurality of survivors of a next instance based on at least one survivor of a previous instance and based on the received bit sequence, a threshold parameter controlling circuit configured to control a threshold parameter based on the soft information determined, and a survivor discarding circuit configured to discard one or more survivors based on a set of predetermined criteria. In particular, the set of predetermined criteria includes a first predetermined criterion based on the threshold parameter. Furthermore, each survivor has an associated bit sequence. There is also provided a corresponding joint detection/decoding method.
摘要翻译：提供了一种联合检测器/解码器设备，包括：输入电路，被配置为接收包括比特序列的输入信号;软信息确定电路，被配置为确定关于所接收的比特序列的软信息; 幸存者分割电路，被配置为基于先前实例的至少一个幸存者并且基于所接收的比特序列产生下一实例的多个幸存者;阈值参数控制电路，被配置为基于所确定的软信息来控制阈值参数以及配置成基于一组预定标准丢弃一个或多个幸存者的幸存者丢弃电路。特别地，该组预定标准包括基于阈值参数的第一预定标准。此外，每个幸存者都有一个关联的位序列。还提供了相应的联合检测/解码方法。

7. 发明申请

WO2016198801A1 DÉCODAGE SUR UNE PLURALITÉ DE TREILLIS À SECTIONS AUTO-COMPLÉMENTAIRES A 4 ÉTATS 审中-公开
标题翻译：基于具有自我补充部分的四状态表格的多重解码
公开(公告)号：WO2016198801A1
公开(公告)日：2016-12-15
申请号：PCT/FR2016/051401
申请日：2016-06-10
申请人： ORANGE
发明人： CARLACH, Jean-Claude
IPC分类号： H03M13/37 , H03M13/39 , H03M13/00
CPC分类号： H03M13/3944 , H03M13/3746 , H03M13/616 , H03M13/6502
摘要： L'invention concerne un procédé de décodage d'une séquence y de n échantillons reçus par un décodeur et correspondant, après transmission, à une séquence c codée de n bits obtenue en appliquant au codage un code correcteur d'erreurs linéaires à des symboles source, le procédé (1) comprenant : • une procédure (2) de décodage à maximum de vraisemblance de la séquence y reçue utilisant une pluralité de treillis pour déterminer une pluralité correspondante de mots décodés, ainsi produisant une pluralité de décisions, dites intermédiaires, pour chacun des n échantillon reçus, • une procédure (3) de détection d'erreur sur les bits des mots décodés utilisant une règle de l'unanimité entre les décisions intermédiaires afférant à chaque échantillon et de prise de décision d'une valeur estimée des n bits de la séquence c codée.
摘要翻译：本发明涉及一种用于解码由解码器接收的n个样本的序列y的方法，并且在传输之后对应于通过将线性误差校正码应用于源符号而获得的n位的编码序列c。方法（1）包括：使用多个格子对所接收的序列y的最大似然解码的过程（2），以便确定相应的多个解码字，由此产生多个决定，称为中间决定，收到的n个样本中的每一个; 以及使用关于每个样本的中间决定之间的一致性原则并且用于确定编码序列c的n位的估计值的关于解码字的比特的错误检测的过程（3）。

8. 发明申请

WO2014094064A1 DIGITAL COMMUNICATION SYSTEM 审中-公开
标题翻译：数字通信系统
公开(公告)号：WO2014094064A1
公开(公告)日：2014-06-26
申请号：PCT/AU2013/001501
申请日：2013-12-20
申请人： UNIVERSITY OF SOUTH AUSTRALIA
发明人： LAND, Ingmar Rudiger , LECHNER, Gottfried , GRANT, Alexander James , HALEY, David Victor Lawrie
IPC分类号： H03M13/29 , H03M13/39 , H04B1/30 , H04L27/10 , H04L27/12 , H04L27/14 , H04J13/00 , H03D9/04
CPC分类号： H04L27/18 , H03M13/1157 , H03M13/1197 , H03M13/2909 , H03M13/2957 , H03M13/3784 , H03M13/616 , H03M13/6325 , H03M13/6331 , H04B10/516 , H04L1/0042 , H04L1/005 , H04L1/0057 , H04L1/0065 , H04L27/2003
摘要： Methods and apparatus for use in communication systems using recursive modulation schemes with a Low Density Generator Matrix code (including an irregular repeat accumulate (IRA) code) are described that have reduced complexity and thus reduced cost compared to prior art systems. A communication system is described in which the transmitter concatenates a low density generator matrix code with an accumulator followed by a recursive modulator in order to eliminate the use of an interleaver, and in which the receiver combines the decoder for the accumulator and the soft demodulator into a single joint decoder in order reduce the number of components and complexity. Another variation is also described in which the transmitter is further simplified by eliminated the accumulator altogether, and in which the receiver is further simplified by replacing the joint decoder with a soft demodulator prior to the LDGM soft decoder.
摘要翻译：描述了使用具有低密度发生器矩阵码（包括不规则重复累加（IRA）码）的递归调制方案的通信系统中的方法和装置，其与现有技术系统相比具有降低的复杂度并因此降低了成本。描述了一种通信系统，其中发射机将低密度发生器矩阵码与累加器后跟递归调制器连接，以消除交织器的使用，并且其中接收机将用于累加器的解码器和软解调器组合成单个联合解码器，以减少组件的数量和复杂性。还描述了另一变型，其中通过一起消除累加器来进一步简化发射机，并且其中通过在LDGM软解码器之前用软解调器替换联合解码器来进一步简化接收机。

9. 发明申请

WO2013151479A3 SOFT-BIT GENERATION AND CHANNEL ESTIMATION FOR INTERFERENCE CANCELLATION USING DECODER OUTPUT 审中-公开
标题翻译：使用解码器输出进行干扰消除的软比特生成和信道估计
公开(公告)号：WO2013151479A3
公开(公告)日：2013-12-19
申请号：PCT/SE2013050244
申请日：2013-03-14
申请人： ERICSSON TELEFON AB L M
发明人： JONSSON ELIAS
IPC分类号： H03M13/45 , H03M13/39 , H04B1/7115 , H04L1/00
CPC分类号： H03M13/6337 , H03M13/2957 , H04L25/021 , H04L25/0212 , H04L25/0238 , H04L25/067
摘要： Log-likelihood ratios produced by a decoder are incorporated into a soft symbol to soft bit estimation process and are used to perform improved channel estimation and impairment covariance estimation. In an example method, a plurality of soft bits and corresponding probability metrics for a series of received unknown symbols are generated. Estimates of the received unknown information symbols are then regenerated, as a function of the soft bits and corresponding probability metrics. An estimate of the average amplitude of the received unknown information symbols, or an estimate of the propagation channel response experienced by the received unknown information symbols, or both, are calculated, as a function of the regenerated symbol estimates. The results are applied to produce demodulated symbols for a second decoding iteration for the series of received unknown symbols.
摘要翻译：由解码器产生的对数似然比被并入到软符号到软比特估计过程中，并且用于执行改进的信道估计和损害协方差估计。在示例性方法中，生成多个软比特和一系列接收到的未知符号的相应概率度量。接收到的未知信息符号的估计随后根据软比特和相应的概率度量被重新生成。作为再生的符号估计的函数，计算接收到的未知信息符号的平均幅度的估计，或由接收到的未知信息符号经历的传播信道响应的估计或两者。结果被应用于产生用于所接收的未知符号序列的第二解码迭代的解调符号。

10. 发明申请

WO2012159257A1 METHOD AND DECODER FOR RECONSTRUCTING A SOURCE SIGNAL 审中-公开
标题翻译：用于重构源信号的方法和解码器
公开(公告)号：WO2012159257A1
公开(公告)日：2012-11-29
申请号：PCT/CN2011/074508
申请日：2011-05-23
申请人： HUAWEI TECHNOLOGIES CO., LTD. , KLEJSA, Janusz , ZHANG, Guoqiang , LI, Minyue , KLEIJN, W. Bastiaan
发明人： KLEJSA, Janusz , ZHANG, Guoqiang , LI, Minyue , KLEIJN, W. Bastiaan
IPC分类号： H03M13/39
CPC分类号： H03M7/4006 , H03M7/3059 , H03M7/40 , H03M13/29 , H04B1/04 , H04N19/30 , H04N19/44
摘要： Method and decoder for reconstructing a source signal In a method for reconstructing a source signal, which is encoded (101) by a set of at least two descriptions, the source signal having a first probability density, wherein the first probability density comprises a first statistical moment and a second statistical moment, the method comprises: receiving (103) a subset of the set of descriptions; reconstructing (105) a reconstructed signal at an operating bitrate of a set of operating bitrates upon the basis of the subset of descriptions, the reconstructed signal having a second probability density, wherein the second probability density comprises a first statistical moment and a second statistical moment; and manipulating (107) the reconstructed signal in order to obtain a manipulated reconstructed signal having a third probability density, wherein the third probability density comprises a first statistical moment and a second statistical moment, wherein the reconstructed signal is manipulated such that at least the first statistical moment and the second statistical moment of the third probability density are more similar to the first statistical moment and the second statistical moment of the source signal than the first statistical moment and the second statistical moment of the second probability density are, and wherein furthermore the reconstructed signal is manipulated such that, irrespective of the operating bitrate, a predetermined minimum similarity between the first statistical moment of the third probability density and the first statistical moment of the first probability density and between the second statistical moment of the third probability density and the second statistical moment of the first probability density is maintained.
摘要翻译：用于重构源信号的方法和解码器在用于重建通过一组至少两个描述被编码（101）的源信号的方法中，源信号具有第一概率密度，其中第一概率密度包括第一统计时刻和第二统计时刻，所述方法包括：接收（103）所述描述集合的子集; 基于所述描述子集，以一组操作比特率的操作比特率重构（105）重构信号，所述重构信号具有第二概率密度，其中所述第二概率密度包括第一统计矩和第二统计时刻 ; 以及操纵（107）所述重构信号以便获得具有第三概率密度的操纵重构信号，其中所述第三概率密度包括第一统计矩和第二统计矩，其中所述重建信号被操纵，使得至少所述第一统计时刻和第三概率密度的第二统计时刻与第一统计时刻更相似，源信号的第二统计时刻比第一统计矩和第二概率密度的第二统计时刻更近，其中，操作重构信号，使得不管操作比特率，第三概率密度的第一统计时刻与第一概率密度的第一统计矩和第三概率密度的第二统计矩之间以及第三概率密度的第二统计矩之间的预定最小相似度第二个统计保持第一概率密度的稳定时刻。

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