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Coding method, decoding method, coder and decoder

A coding method and coding technology, applied in the field of communication

Active Publication Date: 2013-02-06
HUAWEI TECH CO LTD +1
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

On the other hand, when the performance of the decoder is not good enough, the decoding complexity is also a key factor

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  • Coding method, decoding method, coder and decoder
  • Coding method, decoding method, coder and decoder
  • Coding method, decoding method, coder and decoder

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Embodiment Construction

[0027] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the drawings in the embodiments of the present invention. Obviously, the described embodiments are part of the embodiments of the present invention, 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 making creative efforts shall fall within the protection scope of the present invention.

[0028] It should be understood that the technical solution of the present invention can be applied to various communication systems, such as: Global System of Mobile communication (Global System of Mobile communication, referred to as "GSM") system, Code Division Multiple Access (Code Division Multiple Access, referred to as "CDMA") ”) system, Wideband Code Division Multiple Access (WCDMA for short) system, General Packet Radio Service (GPRS for short), Lon...

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Abstract

The invention discloses a coding method, a decoding method, a coder and a decoder. The coding method includes acquiring a first vector with the length of k which is a natural number and is smaller than or equal to 10; forming a coding matrix with the line number of k according to a generator matrix G; and coding the first vector by the coding matrix to form a second vector. The decoding method includes acquiring a coding matrix G0 with the line number of k according to the generator matrix G; multiplying k-dimension total space and the coding matrix to obtain 2k comparison vectors; and comparing the received second vector with the length of 48 to each comparison vector, determining a third vector with the minimum Hamming distance from the third vector in the 2k comparison vectors to the second vector, decoding the second vector, and then determining the first vector according to a coding equation. The coding method, the decoding method, the coder and the decoder in an embodiment of the invention have the advantages that coding at variable transmission rates can be realized, and decoding error correcting capacity can be improved.

Description

technical field [0001] The present invention relates to the communication field, in particular to an encoding method, a decoding method, an encoder and a decoder in the communication field. Background technique [0002] For linear codes, the pros and cons of linear codes are usually judged from two aspects: error correction capability and decoding complexity. The error correction ability is represented by the error correction ability of the linear code to the error bit. The error correction ability is mainly related to the minimum distance of the linear code. The larger the minimum distance of the linear code, the stronger the error correction ability of the linear code. On the other hand, when the performance of the decoder is not good enough, the decoding complexity is also a key factor. When the encoding matrix is ​​large, it is generally necessary to use a Fast Hadamard Transform (FHT for short) to reduce the computational complexity of decoding. Therefore, in order to...

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Application Information

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IPC IPC(8): H04L1/00
Inventor 颜金洲骆源金莹魏岳军
Owner HUAWEI TECH CO LTD
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