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A kind of decoding method and decoder

A decoder and decoding technology, applied in the field of decoding methods and decoders, can solve the problems of low decoding efficiency and high decoding

Active Publication Date: 2020-12-15
HUAWEI TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The embodiment of the present application provides a decoding method and a decoder to solve the problems of high decoding efficiency and low decoding efficiency during the decoding process of the SCL algorithm

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  • A kind of decoding method and decoder
  • A kind of decoding method and decoder
  • A kind of decoding method and decoder

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Embodiment Construction

[0028] The embodiment of the present application provides a decoding method, which greatly reduces the decoding delay and improves the decoding efficiency by serially executing some stages in the decoding process.

[0029] In order to enable those skilled in the art to better understand the solutions of the present application, the following will describe the embodiments of the present application with reference to the drawings in the embodiments of the present application.

[0030] The terms "first", "second", "third", "fourth", etc. (if any) in the specification and claims of the present application and the above drawings are used to distinguish similar objects, and not necessarily Used to describe a specific sequence or sequence. It is to be understood that the terms so used are interchangeable under appropriate circumstances such that the embodiments described herein can be practiced in sequences other than those illustrated or described herein. Furthermore, the term "compr...

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Abstract

This application relates to a decoding method and a decoder. The decoding method includes: calculating, based on a path selection result of a second hit group in a current code block to be decoded, LLRs (log-likelihood ratios) of a first bit group in the code block, where the path selection result includes L paths; calculating BMs (branch metrics) of the first bit group based on the LLRs; selecting at least L BMs for each of the L paths; determining PMs (path metrics) of the first bit group based on the at least L BMs and a path selection result of a previous hit group of the first bit group; and determining a path selection result of the first bit group based on the PMs. In an entire decoding process, other phases before the PM calculation phase can be performed in parallel, thereby reducing a decoding delay, and improving decoding efficiency.

Description

technical field [0001] The present application relates to the communication field, and in particular to a decoding method and a decoder. Background technique [0002] Polar codes are based on channel polarization theory. It is believed that after channel combination, channel polarization will occur in N transmissions of the same channel, so that the capacity of some channels is close to 1, and the capacity of some channels is close to 0, and N The larger , the higher the proportion of these two parts of the channel, and it is considered to be a coding scheme that can theoretically prove that the channel capacity is reachable. [0003] Due to the structured encoding method of Polar codes, the effective decoding algorithm of Polar codes is the Successive Cancellation (SC) algorithm, that is, the estimated value of the next bit of the block to be decoded can be estimated according to the received signal and the existing bits. The sequence is judged one by one by calculating th...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H03M13/13
CPCH03M13/13H03M13/3961H03M13/6502H03M13/6561H03M13/3784H03M13/3927
Inventor 张涛郑征杜政
Owner HUAWEI TECH CO LTD