Huawei Technologies Co., Limited

Oleg Feat'evich Kurmaev

Aleksei Eduardovich Maevskii

Alexey Mikhailovich Razinkin

Jie Jin

Vasily Stanislavovich Usatyuk

Rong Li

Jian Wang

Huazi Zhang

Jian Jun Wang

Lingchen Huang

Shengchen Dai

Jiajie Tong

Vladimir Vitalievich Gritsenko

Mikhail Sergeevich Kamenev

Vadim Andreevich Revutskii

Iuliia Borisovna Kameneva

Petr Vladimirovich Trifonov

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 method comprises: obtaining a coded bit sequence by performing PC-polar coding on information bits based on first constructor parameters; and sending the coded bit sequence. A check equation of the first constructor parameters includes a first element representing a check-required information bit position and a second element representing a check bit position, the first element corresponds to a first vector (V1) in a generator matrix for PC-polar codes, the second element corresponds to a second vector (V2) in the generator matrix, and if a first Hamming weight (HW1) of V1 is the same as a second Hamming weight (HW2) of V2, then a third Hamming weight (HW3) of an addition modulo 2 vector is greater than HW1 and greater than HW2, or if HW1 is different from HW2, then HW3 is greater than a smaller one of the HW1 and HW2.

Coding method and apparatus

The disclosure relates to devices and methods implementing polar codes. For instance, the disclosure relates to an an encoder for encoding data, wherein the encoder comprises a processor configured to encode the data using a (n, k, d) parent polar code C into codewords c=uA subject to the constraints uV=0, wherein udenotes the data, wherein wherein Fdenotes the m-times Kronecker product of the matrix F with itself and wherein the constraint matrix V comprises in addition to the constraint matrix Vof the parent polar code the constraint matrix Vof a first helper code Cand the constraint matrix Vof a second helper code C.

Devices and methods implementing polar codes

An encoding apparatus includes a processor a non-transitory computer-readable storage medium storing a program for encoding data into a codeword. The program includes instructions to encode the data x using a code that is a product of a matrix generated using the Kronecker product of the Q with itself and factors generated according to frozen bit indices of the code and a constraint matrix generated according to a precoding matrix.

Coding and decoding of polar codes extended to lengths which are not powers of two

Encoding devices and methods, arranged to execute encoding, wherein an input vector for polar encoding is computed, wherein the input vector comprises a set of information bits and a set of frozen bits, and an intermediate codeword is generated by executing a polar encoding of the input vector. Further, punctured and shortened bits are removed from the intermediate codeword, to obtain a reduced intermediate codeword, and an output codeword is generated by applying a permutation operation on the reduced intermediate codeword. A sequence of extension bits is selected from the intermediate codeword bits and information bits, and modulated symbols are generated by applying bitmapping on the output codeword and on the sequence of extension bits.

Device and method for executing encoding

Growing community of inventors

Moscow, Russia

Oleg Feat'evich Kurmaev