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H matrix construction method of RS-LDPC two-dimensional product code and slide truncation decoding method thereof

A structure and matrix technology, applied in the field of communication and channel coding, can solve problems such as large system delays

Active Publication Date: 2015-09-02
BEIJING UNIV OF POSTS & TELECOMM
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Problems solved by technology

[0013] Although the RS-LDPC product code is excellent in reducing the bit error rate, its decoding needs to be performed in units of code word matrix. If the code word matrix is ​​large in order to ensure the decoding effect, a large system delay will be generated.

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  • H matrix construction method of RS-LDPC two-dimensional product code and slide truncation decoding method thereof
  • H matrix construction method of RS-LDPC two-dimensional product code and slide truncation decoding method thereof
  • H matrix construction method of RS-LDPC two-dimensional product code and slide truncation decoding method thereof

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Embodiment Construction

[0024] The embodiments of the present invention are described in detail below in conjunction with the accompanying drawings: this embodiment is implemented on the premise of the technical solution of the present invention, and detailed implementation methods and specific operating procedures are provided, but the protection scope of the present invention is not limited to the following the described embodiment.

[0025] The present embodiment relates to a construction method for RS-LDPC two-dimensional product codes and a sliding truncation decoding method including the following steps:

[0026] 1. Initialization: with GF(2 8 RS (207, 187) on the ) field is used as row code, LDPC (864, 288) is used as column code, and decoding_state is used to mark whether decoding is successful, if decoding is successful, decoding_state=0, if decoding fails, decoding_state=1. with Δl i Indicates the truncated length of the i-th decoding, l i Indicates the code length used after the i-th de...

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Abstract

The invention provides an H matrix construction method of an RS-LDPC two-dimensional product code and a slide truncation decoding method thereof in a communication system channel and in a decoding technology field. In two-dimensional product coding, firstly, RS code coding is used in a horizontal direction and then rate compatible LDPC code coding is performed in a vertical direction. An RS code of the horizontal direction eliminates an error flat layer problem existing in the LDPC coding. The LDPC code of the vertical direction constructs a check matrix and can uses a slide truncation decoding mode to reduce participated decoding code words in a high signal to noise ratio area so that time delay is reduced.

Description

(1) Technical field [0001] The invention belongs to the technical field of channel coding in the technical field of communication, in particular to a sliding truncation decoding method based on an H matrix construction method and a corresponding RS-LDPC code. (2) Background technology [0002] Reliable transmission of information in noisy channels is a basic requirement for information transmission systems. The noise characteristic of the channel interferes with the transmitted signal. For this reason, channel coding technology emerges as the times require, which enables errors to be detected and corrected at the receiving end. In addition to excellent error detection and correction capabilities, a good codeword must also ensure: 1. Low complexity in practical applications; 2. Small encoding and decoding delays. [0003] In the digital transmission system, due to external noise interference and intersymbol interference inside the optical fiber, there may be various types of...

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Application Information

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IPC IPC(8): H03M13/11
Inventor 刘博忻向军张丽佳张琦王拥军尹霄丽郑江龙肖飞李博文田清华
Owner BEIJING UNIV OF POSTS & TELECOMM
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