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A method and device for adjusting polar codes, and a coding and decoding device

An adjusted mother code technology, applied in the field of communication, can solve problems such as not being able to meet 5G communication, low complexity, etc.

Active Publication Date: 2020-08-14
HUAWEI TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, due to the characteristics of their own encoding and decoding, these two codes cannot meet the needs of 5G communication in many aspects such as supporting short packets, wider code rates, higher reliability, and lower complexity.

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  • A method and device for adjusting polar codes, and a coding and decoding device
  • A method and device for adjusting polar codes, and a coding and decoding device
  • A method and device for adjusting polar codes, and a coding and decoding device

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Embodiment Construction

[0055] Polar code is a linear block code whose generator matrix is ​​G N , whose encoding process is in, is the vector to be encoded of the Polar code, which is a binary row vector, and its length is the code length N of the mother code. G N is an N×N matrix, and B N is an N×N transpose matrix. e.g. B N Can be a Bit Reversal matrix; defined as log 2 N matrix F 2 The Kronecker product of . The addition and multiplication operations mentioned above are all addition and multiplication operations on binary Galois Field. B N Will not affect the decoding performance, the present invention for the coding matrix is and Both apply.

[0056] During the encoding process of Polar code, Some of the bits are used to carry information, which are called information bits, and the other part of the bits are set to a fixed value pre-agreed by the transceiver end, which are called fixed bits. Usually, the polarization channel error probability corresponding to the bit of seq...

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Abstract

A method and device for adjusting a Polar code, and an encoding and decoding device, for achieving a Polar code coding and decoding method having lower computational complexity. The specific method comprises: acquiring the size K of an information block; determining the positions of K information bits and the positions of fixed bits according to the reliability ranking of N polarized channels; if in an ascending order of sequence numbers of the polarized channels corresponding to the information bits, the positions of first S information bits in the K information bits meet a preconfigured condition; adjusting the positions of P-1 bits in the first S-1 information bits to the positions of the fixed bits, and adjusting the positions of P-1 bits in the positions of the fixed bits to the positions of the information bits; and performing, according to the adjusted positions of the information bits and fixed bits, Polar code encoding or decoding on the information block.

Description

technical field [0001] The embodiments of the present application relate to the communication field, and in particular, to a Polar code encoding and decoding method, device, and encoding and decoding device. Background technique [0002] The rapid evolution of wireless communication indicates that the future communication system will show more new features, and it also poses new challenges to the original communication technology. For example, the future fifth-generation mobile communication technology (5th-Generation, 5G) poses new challenges to the current long-term evolution (Long Term Evolution, LTE) technology. Channel coding, as the most basic wireless access technology, is an important research object for communication technologies of all ages to meet its needs. [0003] After the Shannon theory was proposed, the industry has been committed to finding a coding and decoding method that can reach the Shannon limit and have relatively low complexity. Turbo codes and Lo...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04L1/00
CPCH04L1/0009H04L1/0057H04L1/0061H04L1/0064H03M13/13H04L1/00
Inventor 陈莹罗禾佳乔云飞李榕杜颖钢
Owner HUAWEI TECH CO LTD