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Low density parity check coding method, device and parity check matrix generating method

A parity check matrix and low density parity technology, applied in the field of coding methods and devices of low density parity check codes, can solve problems such as difficulty in applying optical fiber communication systems, high speed, high efficiency and low coding and decoding complexity, etc.

Inactive Publication Date: 2007-10-03
HUAWEI TECH CO LTD +1
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Problems solved by technology

Because optical fiber communication systems are very different from these systems, especially the special requirements of high speed, high efficiency and low encoding and decoding complexity of optical fiber communication systems, it is difficult to apply these studies and their results to optical fiber communication systems.

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  • Low density parity check coding method, device and parity check matrix generating method
  • Low density parity check coding method, device and parity check matrix generating method
  • Low density parity check coding method, device and parity check matrix generating method

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Embodiment Construction

[0061] In order to make the object, technical solution and advantages of the invention clearer, the present invention will be further described in detail below with reference to the accompanying drawings and examples.

[0062] The basic requirement for LDPC encoding of the information bits to be transmitted is to meet the bit error rate performance requirements of application systems, such as communication systems and magnetic storage systems, while taking into account the complexity and cost of encoding and decoding. Generally, there are many factors that affect the bit error rate performance of the LDPC code, among which two more important factors are the minimum circle length and the minimum Hamming distance of the parity check matrix corresponding to the LDPC code. Therefore, an important content of designing LDPC codes is to construct a suitable parity check matrix H so that the minimum cycle length and minimum Hamming distance meet certain requirements. It is known that ...

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Abstract

A LDPC coding method includes confirming number L of cyclic sub-matrix required to generate odd-even calibration matrix according to coding efficiency preset by system, generating L numbers of cyclic sub-matrixes as per code length of LDPC code and confirmed number L, ensuring one of said sub-matrixes to be reversible cyclic sub-matrix, deriving out generating matrix of LDPC code according to generated cyclic sub-matrixes and obtaining bit sequence to be sent by carrying out LDPC coding on information bit to be sent according to said generating matrix. The device used for realizing said method is also disclosed.

Description

technical field [0001] The present invention relates to the channel coding technology in the communication system, particularly relate to a kind of coding method and device of Low-Density Parity Check (LDPC, Low-Density Parity Check) code, and a kind of generation method of LDPC code parity check matrix . Background technique [0002] The role of a communication system is to transfer information from one place to another through a communication channel. Due to the influence of noise, interference, etc. in the communication channel, errors may occur during the transmission of information, resulting in the receiver being unable to receive it correctly. In order to improve the transmission performance of the communication system, by adding some redundant information to the transmitted information, the information errors that occur during the transmission can be found or corrected to recover the correct information. The above-mentioned process of adding redundant information t...

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Application Information

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IPC IPC(8): H03M13/11H04L1/00
Inventor 许渤陈铭
Owner HUAWEI TECH CO LTD
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