Method, device and system for encoding and decoding

A coding method and a decoding technology, which are applied in coding, transmission systems, error detection coding, etc., can solve problems such as reduced decoding performance, poor SC decoding quality, and low user experience

Active Publication Date: 2014-05-07
HUAWEI TECH CO LTD
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  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] In the process of realizing the above encoding and decoding, the inventors found that there are at least the following problems in the prior art: After the information bits are checked by CRC, the information bits and the CRC check code are encoded by Pola

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  • Method, device and system for encoding and decoding

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Embodiment Construction

[0038] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only some, not all, embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.

[0039] The embodiment of the present invention provides an encoding method, such as figure 1 shown, including:

[0040] 101. Encode the information bits according to the first-level encoding method to obtain a codeword after the first-level encoding.

[0041] Wherein, the first-level encoded codeword includes: information bits and parity bits.

[0042] Further, the first-level encoding method may be a CRC (Cyclic Redundancy Check, cyclic redundancy check) en...

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Abstract

The embodiment of the invention provides a method, a device and a system for encoding and decoding and relates to the field of communication. The invention aims to improve the decoding performance and improve the accuracy of a survivor path. The method comprises the following steps: first, encoding information bits according to a first-stage encoding method to obtain a first-stage encoded codeword; acquiring the sorting data volume of each check bit of the first-stage encoded codeword, and adjusting each check bit to a corresponding position according to the sorting data volume of the check bit, wherein the sorting data volume is the value of S when the check bit is related to the first S information bits among the information bits in the first-stage encoded codeword, and S is a non-zero integer; and carrying out second-stage encoding on the first-stage encoded codeword of which the positions of the check bits are adjusted according to a second-stage encoding method to obtain a second-stage encoded codeword. The method, the device and the system for encoding and decoding are applicable to various communication systems.

Description

technical field [0001] The present invention relates to the communication field, in particular to a method, device and system for encoding and decoding. Background technique [0002] At present, communication systems usually use channel coding methods to improve the reliability of data transmission and ensure the quality of communication. Polar codes are linear block codes that can achieve Shannon capacity and have low coding complexity. The encoding process of Polar code is in, N is the code length, and N=2 n , n is an integer not less than 0, F = 1 0 1 1 , B N is the transposed matrix. The decoding method corresponding to the Polar code is SC (successive-cancellation, serial interference cancellation). [0003] In the prior art, after the in...

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Application Information

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IPC IPC(8): H04L1/00
CPCH03M13/13H03M13/3738H03M13/09H03M13/1102H03M13/2906H04L1/0054H04L1/0061H04L1/0057H04L1/0045H04L1/0059H04L1/00
Inventor 李斌沈晖
Owner HUAWEI TECH CO LTD
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