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Method and device for generating mixed polar codes

A mixed polarity and encoding technology, applied in the field of encoding and decoding, can solve problems such as unsatisfactory performance, affecting the performance of Polar codes and application complexity, etc.

Active Publication Date: 2017-02-01
HUAWEI TECH CO LTD
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Problems solved by technology

Even if the improved SC-List decoding algorithm achieves the best ML (Maximum Likehood, maximum likelihood) decoding performance, its performance is not ideal, and CRC (Cyclic Redundancy Check, Cyclic Redundancy Check) must be cascaded To increase the minimum code distance, which affects the performance and application complexity of Polar codes

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  • Method and device for generating mixed polar codes
  • Method and device for generating mixed polar codes
  • Method and device for generating mixed polar codes

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Embodiment Construction

[0066] 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 some of the embodiments of the present invention, but not all of them. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without creative efforts fall within the protection scope of the present invention.

[0067]Embodiments of the present invention are applicable to various communication systems, therefore, the following description is not limited to a specific communication system. Global System of Mobile communication (GSM for short) system, Code Division Multiple Access (CDMA for short) system, Wideband Code Division Multiple Access (WCDMA for short) system, general packet radio service (General Packet Radio Service, referred to as "GPRS"), long term ...

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Abstract

Embodiments of the present invention provide a method and device for generating a hybrid polar code. The method includes: obtaining a first matrix of N×N and a sequence containing N bits, wherein N is the code length of the mixed Polar code, N rows of the first matrix correspond to N bits in the sequence, and N is positive Integer; determine the reliability of N bits and determine the weight of N rows of the first matrix; according to the reliability of N bits and the weight of N rows of the first matrix, select K bits of the N bits as information Bits or select K rows of the first matrix to form a second matrix of K×N for encoding, so as to encode the information bit sequence according to the position of the information bit or according to the second matrix to generate a mixed Polar code; K is to be encoded The length of the information bit sequence is not greater than N. The embodiment of the present invention not only considers the reliability, but also considers the weight of the row of the first matrix corresponding to the bit, so that the performance of the Polar code can be improved.

Description

technical field [0001] Embodiments of the present invention relate to the field of encoding and decoding, and more specifically, relate to a method and a device for generating a mixed polar code (polar code). Background technique [0002] Communication systems usually use channel coding to improve the reliability of data transmission and ensure the quality of communication. Polar code (polar code) is an encoding method that can obtain Shannon capacity and has low encoding and decoding complexity. Polar codes are a type of linear block codes. Its generating matrix is ​​G N. , whose encoding process is here Code length N=2 n , n≥0. [0003] here F = 1 0 1 1 , B N is a transposed matrix, such as a bit reversal matrix. [0004] is the Kronecker power of F, defined as Polar codes can...

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H03M13/15
CPCH03M13/13H03M13/616H04L1/0009H04L1/0057H04L1/00
Inventor 李斌沈晖
Owner HUAWEI TECH CO LTD
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