公开(公告)号：US12021572B2

公开(公告)日：2024-06-25

申请号：US18080932

申请日：2022-12-14

申请人： Yiqun Ge ,  Wuxian Shi ,  Wen Tong

发明人： Yiqun Ge ,  Wuxian Shi ,  Wen Tong

IPC分类号： H04B17/26 ,  H04B17/373 ,  H04L25/02 ,  H04L25/03 ,  H04W24/10

CPC分类号： H04B17/26 ,  H04B17/373 ,  H04L25/0254 ,  H04L25/03165 ,  H04W24/10

摘要： A wireless network can generate candidate signal configurations for physical transmissions to or from a user equipment (UE) in a radio environment. The generation of candidate signal configurations can be performed using a first neural network that is associated with the UE. These signal configurations can then be evaluated using a second neural network that is associated with the radio environment. The second neural network can be trained using measurements from previous physical transmissions in the radio environment. The trained second neural network generates a reward value that is associated with the candidate signal configurations. The first neural network is then trained using the reward values from the second neural network to produce improved candidate signal configurations. When a signal configuration that produces a suitable reward value is generated, this signal configuration can be used for the physical transmission in the radio environment.

公开(公告)号：US10447435B2

公开(公告)日：2019-10-15

申请号：US15651390

申请日：2017-07-17

申请人： Wuxian Shi ,  Yiqun Ge

发明人： Wuxian Shi ,  Yiqun Ge

IPC分类号： H04L1/00 ,  H03M13/45 ,  H03M13/13 ,  H03M13/00 ,  H04W88/02 ,  H04W88/08

摘要： In reduced-stage polar decoding, a received word that is based on an N-bit codeword of a polar code is decoded using fewer than log2N Log Likelihood Ratio (LLR) stages. Decoding uses a reduced stage decoding configuration. In an embodiment, such a configuration includes at least one higher-order LLR stage with nodes implementing functions that are based on a combination of lower-order polar code kernels.

公开(公告)号：US20170019222A1

公开(公告)日：2017-01-19

申请号：US15203498

申请日：2016-07-06

申请人： Yiqun Ge ,  Wuxian Shi

发明人： Yiqun Ge ,  Wuxian Shi

IPC分类号： H04L5/00 ,  H04B7/26

CPC分类号： H04L5/0007 ,  H04B7/2628

摘要： Methods and devices are disclosed for receiving and decoding sparsely encoded data sequences using a message passing algorithm (MPA) or maximum likelihood sequence estimation (MLSE). Such data sequences may be used in wireless communications systems supporting multiple access, such as sparse code multiple access (SCMA) systems. The Methods and devices reduce the number of states in a search space for each received signal and associated function node based on a search threshold based on a characteristic related to the received signal and/or to a quality of a resource element over which the received signal is transmitted.

摘要翻译： 公开了使用消息传递算法（MPA）或最大似然序列估计（MLSE）来接收和解码稀疏编码的数据序列的方法和装置。 这样的数据序列可以用于支持多个接入的无线通信系统，例如稀疏码多址（SCMA）系统。 方法和装置基于与接收信号相关的特征和/或资源元素的质量，基于搜索阈值来减少每个接收信号和相关联功能节点在搜索空间中的状态数量， 被传送。

公开(公告)号：US11700518B2

公开(公告)日：2023-07-11

申请号：US16884892

申请日：2020-05-27

申请人： Wuxian Shi ,  Yiqun Ge ,  Wen Tong ,  Qifan Zhang

发明人： Wuxian Shi ,  Yiqun Ge ,  Wen Tong ,  Qifan Zhang

IPC分类号： H04W4/70 ,  G06N3/08 ,  G06N3/045

CPC分类号： H04W4/70 ,  G06N3/045 ,  G06N3/08

摘要： Methods and apparatuses for feature-driven communications are described. A set of features describing an observed subject is transmitted by a transmitting electronic device (ED) to a base station (BS). The BS translates the received features to another set of transmission features to be transmitted to a receiving ED. The receiving ED recovers information about the subject from the features received from the BS.

公开(公告)号：US11438011B2

公开(公告)日：2022-09-06

申请号：US16882623

申请日：2020-05-25

申请人： Yiqun Ge ,  Wuxian Shi

发明人： Yiqun Ge ,  Wuxian Shi

IPC分类号： H03M13/13 ,  H04L1/00 ,  H04L9/32 ,  H03M13/53

摘要： A transmitter and receiver are provided for communication over a noisy channel in a wireless communications system. The transmitter and receiver use polar coding to provide reliability of data transmission over the noisy wireless channel. In addition, signature bits are inserted in some unreliable bit positions of the polar code. For a given codeword, the receiver with knowledge of the signature can more effectively decode the codeword. Cyclic redundancy check (CRC) bits may also included in the input vector to assist in decoding.

公开(公告)号：US11424856B2

公开(公告)日：2022-08-23

申请号：US16929477

申请日：2020-07-15

申请人： Yiqun Ge ,  Wuxian Shi ,  Wen Tong

发明人： Yiqun Ge ,  Wuxian Shi ,  Wen Tong

IPC分类号： G11C29/00 ,  H04L1/00 ,  G06N3/08 ,  G06F17/18

摘要： A method and apparatus for encoding source information for transmission over a transmission channel is disclosed. The method involves causing a source encoder to generate a plurality of feature probability distributions representing aspects of the source information. The method also involves receiving the plurality of feature probability distributions at an input of a distribution channel encoder, the distribution channel encoder being implemented using a polarization stream network. The method further involves causing the distribution channel encoder to transform the plurality of feature probability distributions into a dimension-extended output plurality of distribution codewords for transmission over the transmission channel. Methods and apparatus for decoding the output plurality of distribution codewords to regenerate the source information is also disclosed.

公开(公告)号：US10680651B2

公开(公告)日：2020-06-09

申请号：US16117863

申请日：2018-08-30

申请人： Yiqun Ge ,  Wuxian Shi

发明人： Yiqun Ge ,  Wuxian Shi

IPC分类号： H03M13/13 ,  H04L1/00 ,  H04L9/32 ,  H03M13/53

摘要： A transmitter and receiver are provided for communication over a noisy channel in a wireless communications system. The transmitter and receiver use polar coding to provide reliability of data transmission over the noisy wireless channel. In addition, signature bits are inserted in some unreliable bit positions of the polar code. For a given codeword, the receiver with knowledge of the signature can more effectively decode the codeword. Cyclic redundancy check (CRC) bits may also included in the input vector to assist in decoding.

公开(公告)号：US10312947B2

公开(公告)日：2019-06-04

申请号：US15003184

申请日：2016-01-21

申请人： Yiqun Ge ,  Wuxian Shi

发明人： Yiqun Ge ,  Wuxian Shi

IPC分类号： H03M13/00 ,  H03M13/39 ,  H03M13/09 ,  H03M13/29 ,  H03M13/13

摘要： Methods for encoding and decoding Polar codes are provided, together with apparatuses for performing the methods. An encoding method combines first and second sequences of information bits and CRC bits and a plurality of frozen bits into an input vector. The input vector is multiplied by a generator matrix for a Polar code to produce a concatenated codeword. A decoding method receives such a codeword and produces a decoded vector by generating successive levels of a decision tree. For a first number of levels of the decision tree, paths beyond a first maximum number of most probable paths are discarded. For a second number of levels of the decision tree, paths beyond a second maximum number of most probable paths are discarded. In some cases, the decoding method may have improved performance compared to some decoding methods for non-concatenated codewords.

公开(公告)号：US08488439B2

公开(公告)日：2013-07-16

申请号：US12787309

申请日：2010-05-25

申请人： Yiqun Ge ,  Xutao Zhou ,  Wuxian Shi

发明人： Yiqun Ge ,  Xutao Zhou ,  Wuxian Shi

IPC分类号： H04J11/00

CPC分类号： H04L27/2657 ,  H04L27/2676

摘要： A blind carrier frequency offset estimator is based on a single-OFDM-symbol training sequence in multi-user OFDMA uplink. Through multiple access interference modeling and analysis, a virtual user is employed that occupies the all null sub-carriers. By minimizing the energy leakage on the virtual user in term of tentative frequency offsets, the estimator can approach the real frequency offset. The estimator performs only on frequency-domain, simplifies interference calculations, and lowers the rank of the matrix. An iterative computation method is used to approach the real frequency offset.

摘要翻译： 盲载波频偏估计器基于多用户OFDMA上行链路中的单OFDM符号训练序列。 通过多址干扰建模和分析，采用占用全部空子载波的虚拟用户。 通过最小化虚拟用户在暂定频率偏移方面的能量泄漏，估计器可以接近实际频率偏移。 估计器仅在频域上执行，简化了干扰计算，并降低了矩阵的秩。 迭代计算方法用于逼近实际频偏。

公开(公告)号：US20110060972A1

公开(公告)日：2011-03-10

申请号：US12945661

申请日：2010-11-12

申请人： Wuxian Shi ,  Juan Du ,  Yiqun Ge ,  Gobin Sun

发明人： Wuxian Shi ,  Juan Du ,  Yiqun Ge ,  Gobin Sun

IPC分类号： H03M13/23 ,  G06F11/10 ,  H03M13/41

CPC分类号： H03M13/3938 ,  H03M13/413 ,  H03M13/6362 ,  H03M13/6502 ,  H03M13/6505 ,  H04L1/0054 ,  H04L1/0059

摘要： A method for decoding tail-biting convolutional codes. The method includes initializing a correction depth, selecting a first starting state from a set of encoding states, and initializing a metric value for the selected starting state as zero and the other states as infinity. The input bit stream is read and a Search Depth Viterbi algorithm (SDVA) is performed to determine path metrics and identify a minimum-metric path. The ending state for the minimum-metric path is determined and the output for this ending state is identified as “previous output.” A second starting state is set to the ending state of the minimum-metric path, and symbols equal to the correction depth from the previous output are read. The SDVA is performed on the second set of read symbols to generate a corrected output. A decoded output is generated by replacing symbols at the beginning of the previous output with the corrected output.

摘要翻译： 一种用于解码尾巴卷积码的方法。 该方法包括初始化校正深度，从一组编码状态中选择第一起始状态，以及将所选择的起始状态的度量值初始化为零，将其他状态初始化为无穷大。 读取输入比特流，执行搜索深度维特比算法（SDVA）以确定路径度量并识别最小度量路径。 确定最小度量路径的结束状态，并将该结束状态的输出识别为“先前输出”。将第二起始状态设置为最小度量路径的结束状态，等于校正深度的符号 从以前的输出读取。 在第二组读符号上执行SDVA以产生校正输出。 通过使用校正输出替换先前输出开始处的符号来产生解码输出。