公开(公告)号：US20210135783A1

公开(公告)日：2021-05-06

申请号：US16487050

申请日：2017-12-14

申请人： Yang YANG ,  Jing JIANG ,  Gabi SARKIS ,  Chao WEI ,  Jian LI ,  Changlong XU ,  Hari SANKAR ,  Joseph Binamira SORIAGA ,  QUALCOMM Incorporated

发明人： Yang Yang ,  Jing Jiang ,  Gabi Sarkis ,  Chao Wei ,  Jian Li ,  Changlong Xu ,  Hari Sankar ,  Joseph Binamira Soriaga

IPC分类号： H04L1/00 ,  H03M13/13 ,  H03M13/01 ,  G06N7/00

摘要： Methods, systems, and devices for wireless communication are described for mutual information based polar code construction. A wireless device may receive a codeword over a wireless channel, the codeword encoded using a polar code. The wireless device may identify a set of bit locations of the polar code corresponding to information bits of an encoded information bit vector. The set of bit locations may be determined based at least in part on a reliability order of the bit locations of the polar code, and the reliability order may be determined based at least in part on a recursive model that includes at least one mutual information transfer function that is applied at each polarization stage of multiple polarization stages of the polar code. The wireless device may decode the received codeword to obtain the information bit vector at the set of bit locations.

公开(公告)号：US20150372695A1

公开(公告)日：2015-12-24

申请号：US14766740

申请日：2013-03-14

申请人： Jian LI ,  Changlong XU ,  Yisheng XUE ,  Jilei HOU ,  Yin HUANG ,  QUALCOMM INCORPORATED

发明人： Jian Li ,  Changlong Xu ,  Yisheng Xue ,  Jilei Hou ,  Yin Huang

IPC分类号： H03M13/11 ,  H04L1/00

CPC分类号： H03M13/1131 ,  H04L1/0045 ,  H04L1/005 ,  H04L1/0057

摘要： A method of error correction using low density parity check (LDPC) codes is disclosed. A communications device receives a codeword and detects one or more bit errors in the received codeword using an LDPC code. The device then generates a corrected codeword based, at least in part, on a set of unsatisfied check nodes of the LDPC code. The device may determine that the one or more bit errors are associated with an absorption set of the LDPC code. The device may also determine a plurality of candidate codewords based on the set of unsatisfied check node and select the corrected codeword from the plurality of candidate codewords. Each of the plurality of candidate codewords may represent a valid codeword associated with the LDPC code.

摘要翻译： 公开了一种使用低密度奇偶校验（LDPC）码的纠错方法。 通信设备接收码字，并使用LDPC码检测接收到的码字中的一个或多个比特错误。 然后，该设备至少部分地基于LDPC码的一组不满足的校验节点来生成校正码字。 设备可以确定一个或多个比特错误与LDPC码的吸收集相关联。 该设备还可以基于该不满足的校验节点集合来确定多个候选码字，并从多个候选码字中选择校正后的码字。 多个候选码字中的每一个可以表示与LDPC码相关联的有效码字。

公开(公告)号：US08634355B2

公开(公告)日：2014-01-21

申请号：US12715920

申请日：2010-03-02

申请人： Tom Harel ,  Yuval Lomnitz ,  Changlong Xu

发明人： Tom Harel ,  Yuval Lomnitz ,  Changlong Xu

IPC分类号： H04W4/00 ,  H04J1/00 ,  H04M1/00

CPC分类号： H04W68/08 ,  H04B7/0478 ,  H04W68/02 ,  H04W84/045

摘要： A wireless network includes base stations and mobile stations. The base stations determine burst sizes and partitions, and signal this information to the mobile stations.

摘要翻译： 无线网络包括基站和移动台。 基站确定突发大小和分区，并将该信息发送给移动台。