Huawei Technologies Co., Limited

Future Wei Technologies, Inc.

Jie Jin

Ivan Leonidovich Mazurenko

Chaolong Zhang

Aleksandr Aleksandrovich Petiushko

Wen Tong

Jian Wang

Gongzheng Zhang

Aleksei Eduardovich Maevskii

Oleg Feat'evich Kurmaev

Bin Li

Rong Li

Kai Chen

Hejia Luo

Yinggang Du

Branislav M Popovic

Carmela Cozzo

Jian Jun Wang

Elyar Eldarovich Gasanov

Jun Chen

Rongdao Yu

Yong Xie

Chen Xu

Wei Ye Chen

Anahid Robert Safavi

Guijie Wang

Alberto Giuseppe Perotti

Gleb Vyacheslavovich Kalachev

Vladimir Vitalievich Gritsenko

Mikhail Sergeevich Kamenev

Vadim Andreevich Revutskii

Iuliia Borisovna Kameneva

Ivanov Ilya

Embodiments of this application disclose provides a low density parity check (LDPC) channel encoding method for use in a wireless communications system. A communication device encodes an input bit sequence by using a LDPC matrix, to obtain an encoded bit sequence for transmission. The LDPC matrix is obtained based on a lifting factor Z and a base matrix. Embodiments of the application provide eight particular designs of the base matrix. The encoding method provided in the embodiments of the application can be used in various communications systems including the fifth generation (5G) telecommunication systems, and can support various encoding requirements for information bit sequences with different code lengths.

Method and apparatus for low density parity check channel coding in wireless communication system

A low density parity check (LDPC) channel encoding method is used in a wireless communications system. A communication device encodes an input bit sequence by using an LDPC matrix, to obtain an encoded bit sequence for transmission. The LDPC matrix is obtained based on a lifting factor Z and a base matrix. The base matrix may be one of eight exemplary designs. The encoding method can be used in various communications systems including fifth generation (5G) telecommunication systems, and can support various encoding requirements for information bit sequences with different code lengths.

A data processing method and a data processing apparatus are provided to reduce a bit error rate of a wireless communications system and improve transmission performance of the wireless communications system. The method includes: mapping L to-be-sent bits to L bit locations included in at least one modulation symbol, where the L to-be-sent bits include at least one bit field, a bit in a bit field having a high priority is preferentially mapped to a bit location that is of the at least one modulation symbol and that has a high reliability level, the at least one bit field is at least one of an information bit field, a first parity bit field, and a second parity bit field; and outputting the at least one modulation symbol.

Wireless communication data processing method and apparatus for reducing bit error rate

A communication transmitter for transmitting a control message over a physical downlink control channel (PDCCH) towards a communication entity in a mobile communication network, wherein the communication transmitter comprises a processor configured to process a control block to obtain the control message, wherein the control block includes a first portion and a second portion, wherein the first portion includes downlink control information bits indicating information relating to data transmission over the mobile communication network, and insert prefix error detection code bits into the second portion of the control block to obtain the control message, and a communication interface configured to transmit the control message over the mobile communication network and a communication receiver for receiving the control message from the communication transmitter over the communication network.

Devices and methods for encoding downlink control information in a communication network

The device and method disclosed herein are configured for generating a polar code of length N and dimension K on the basis of an original polar code being defined by a code sequence S having Nbit indices sorted from least reliable to most reliable sub-channels. The device comprises a processing unit configured to: (a) generate an auxiliary code sequence having N/2 bit indices by removing bit indices greater than or equal to N/2 from the code sequence S; (b) remove from the auxiliary code sequence the last Nbit indices to generate a modified auxiliary code sequence; and (c) generate the polar code of length N and dimension K by puncturing the original polar code on the basis of a puncturing set defined by the last p=N&#x2212;N bit indices of the modified auxiliary code sequence.

Devices and methods for generating block punctured polar codes

A polar code encoding/decoding method in a communications system is provided, including: determining an information bit location set or a frozen bit location set of a polar code based on an interleaving operation or a corresponding de-interleaving operation; and encoding or decoding the polar code based on the determined information bit location set or frozen bit location set.

Encoding method, decoding method, apparatus, and device

This application discloses an information processing method and apparatus, a communications device, and a communications system. The method includes: encoding an input sequence by using a low density parity check LDPC matrix to obtain a bit sequence D, where a base matrix of the LDPC matrix is represented by a matrix of m rows and n columns, each column corresponds to a group of Z continuous bits in the bit sequence D, and both n and Z are integers greater than 0; and obtaining an output bit sequence based on a bit sequence V, where the bit sequence V is obtained by permuting groups of bits corresponding to at least two parity check columns in the bit sequence D.

Information processing method and communications apparatus

This application discloses an encoding method, an apparatus, a communications device, and a communications system. The method includes: encoding an input bit sequence by using a low density parity check LDPC matrix, where the LDPC matrix is obtained based on a lifting factor Z and a base matrix, and the base matrix includes a row 0 to a row 4 and a column 0 to a column 26 in one of matrices shown in FIG.-A to FIG.-B, or the base matrix includes a row 0 to a row 4 and some of a column 0 to a column 26 in one of matrices shown in FIG.-A to FIG.-B. According to the encoding method, the apparatus, the communications device, and the communications system, channel coding requirements can be met.

Information processing method, apparatus, and communications device

A decoding method, an encoding method, a decoder and an encoder are disclosed. In an embodiment the decoding method includes receiving, at a receiver of a receiving side, signals from a transmitting side, the signals including a code word and decoding, at a decoder of the receiving side, the code word using a low density parity check (LDPC) code in which each n adjacent rows, n&#x3e;1, in an extension part of a base parity check matrix (PCM) are orthogonal except for punctured information columns.

Compact low density parity check (LDPC) base graph

Embodiments of the present invention disclose a polar code processing method and communications device. The method includes: obtaining, based on a target coded bit quantity M and preset first mapping relationship information, a first sequence number set of M uncoded bits that is corresponding to the target coded bit quantity M, the first mapping relationship information is used to indicate a one-to-one correspondence between a plurality of coded bit quantities and a plurality of uncoded bit sequence number sets, the M uncoded bits include K information bits, and M target coded bits are obtained after polar encoding is performed on the M uncoded bits; and selecting, from the first sequence number set of the M uncoded bits according to a preset first selection rule, K sequence numbers as a sequence number set of the K information bits.

Polar code processing method and communications device

Growing community of inventors

Moscow, Russia

Jie Jin