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Coding method and coder

An encoding method and an encoder technology are applied in the direction of error detection encoding, error detection encoding using multiple parity bits, error correction/detection using linear codes, etc., which can solve the problem of excessive check digit m Problems such as large coding rate and reduced decoding performance

Active Publication Date: 2018-01-09
WUHAN HONGXIN TELECOMM TECH CO LTD
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  • Abstract
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  • Claims
  • Application Information

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Problems solved by technology

[0004] In the above encoding method, for some information sequences to be encoded with a small number of information bits, the check digit m is too large, resulting in a large coding rate of the polar code, which reduces the subsequent decoding performance

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  • Coding method and coder

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Embodiment Construction

[0024] The technical solutions in the embodiments of the present application will be described clearly and completely in conjunction with the accompanying drawings in the embodiments of the present application. Obviously, the described embodiments are only a part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in this application, all other embodiments obtained by those of ordinary skill in the art without creative work shall fall within the protection scope of this application.

[0025] In the actual communication system, when the cyclic redundancy check (CRC) encoding and the polarization code encoding are cascaded for polarization code encoding, usually the CRC check bit is immutable, that is, once the CRC check bit is determined After that, no matter how the number of bits of the information sequence to be coded input into the encoder changes, the CRC check bit number will remain unchanged. Therefore, under certain circu...

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Abstract

The invention discloses a coding method and a coder. The method comprises the steps of receiving a to-be-coded information sequence; searching a preset Hamming code information digit set to determinea Hamming code information digit matching the to-be-coded information sequence, wherein when the Hamming code information digit matching the to-be-coded information sequence is the Hamming code information digit of which the information digit is greater than the digit of the to-be-coded information sequence, and a difference value between the information digit of the Hamming code information digitand the digit of the to-be-coded information sequence is the minimum, complementing the to-be-coded information sequence with zeroes, thereby enabling the to-be-coded information sequence to satisfya Hamming code demand; carrying out Hamming coding on the information sequence complemented with zeros; and deleting the complementing zeroes and further carrying out polar code coding. Through application of the scheme of cascading the Hamming code coding and polar code coding, a code rate of polar codes can be reduced, and the polar code decoding performance can be improved.

Description

Technical field [0001] This application relates to the technical field of channel coding, and more specifically, to a polarization code coding method and encoder. Background technique [0002] Polarization code encoding is an existing encoding method that can reach the channel capacity when the code length tends to infinity under the binary discrete memoryless channel, but when the code length is finite, the corresponding serial The decoding performance of the cancellation decoding method and the serial cancellation list decoding method is not ideal. [0003] In response to this, an improved polarization code encoding method is proposed to improve the subsequent decoding performance. The encoding method is to concatenate cyclic redundancy check (CRC) encoding and polarization code encoding, specifically, for the encoder, Determine the m-digit CRC check bit. When encoding, add the m-digit CRC check bit to the information sequence to be coded, and then perform polarization code enco...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H03M13/13H03M13/11H03M13/09
Inventor 马硕张元雨
Owner WUHAN HONGXIN TELECOMM TECH CO LTD