Apparatus and method for coding/decoding block low density parity check code with variable block length

一种低密度奇偶、奇偶校验矩阵的技术，应用在移动通信系统领域，能够解决性能改进、校验节点不能迭代解码影响等问题

Active Publication Date: 2007-04-11
SAMSUNG ELECTRONICS CO LTD
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  • Claims
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Problems solved by technology

Check nodes with degree 1 cannot affect performance improvement based on iterative decoding

Method used

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  • Apparatus and method for coding/decoding block low density parity check code with variable block length
  • Apparatus and method for coding/decoding block low density parity check code with variable block length
  • Apparatus and method for coding/decoding block low density parity check code with variable block length

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Embodiment Construction

[0101] Several preferred embodiments of the present invention will now be described in detail with reference to the accompanying drawings. In the following description, detailed descriptions of known functions and configurations incorporated herein are omitted for brevity.

[0102] The present invention proposes an apparatus and method for encoding and decoding a block Low Density Parity Check (LDPC) code having a variable length (hereinafter referred to as "variable length block LDPC code"). That is, the present invention proposes an apparatus and method for encoding and decoding variable-length block LDPC codes in which the length of the minimum cycle in the factor graph of the block LDPC code is maximized and the encoding complexity of the block LDPC code is minimized , the degree distribution in the factor graph of a block LDPC code has an optimal value of 1, and supports variable block lengths. Although not independently described in the specification, the encoding and d...

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Abstract

Disclosed is a device and procedure for coding a block low density parity check (LDPC) code having a variable length. The a device and procedure includes receiving an information word; and coding the information word into a block LDPC code based on one of a first parity check matrix and a second parity check matrix depending on a length to be applied when generating the information word into the block LDPC code.

Description

technical field [0001] The present invention relates generally to mobile communication systems, and more particularly, to apparatus and methods for encoding / decoding block Low Density Parity Check (LDPC) codes. Background technique [0002] With the rapid development of mobile communication systems, even in wireless networks, it is necessary to develop technologies that can transmit batches of data that can approximate the capacity of wired networks. In order to meet the increasing demand for high-speed, high-capacity communication systems capable of processing and transmitting various data beyond voice-oriented services, such as image and radio data, the transmission efficiency of the system is substantially increased by using an appropriate channel coding scheme to This improves overall system performance. However, due to its characteristics, mobile communication systems inevitably generate errors due to noise, interference, and fading according to channel conditions duri...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04L1/00H03M13/11
CPCH03M13/1188H03M13/116H03M13/6516H03M13/1185H03M13/635H03M13/118H04L1/00H04L27/18H03M13/11
Inventor 庆奎范郑鸿实金宰烈朴东植周判谕明世澔梁景喆梁贤九
Owner SAMSUNG ELECTRONICS CO LTD
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