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LDPC code decoding method and circuit adopting improved TDMP algorithm

A technology of LDPC code and decoding circuit, which is applied in the field of LDPC code decoding method and circuit, and can solve problems such as reducing performance.

Active Publication Date: 2019-03-05
ALICORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, in actual operation, because some frames in the coded signal will be easily affected by insufficient decoding time, even if the existing TDMP algorithm is used, the LDPC code decoding method can only complete extremely A small number of iterations, which reduces its performance

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  • LDPC code decoding method and circuit adopting improved TDMP algorithm
  • LDPC code decoding method and circuit adopting improved TDMP algorithm
  • LDPC code decoding method and circuit adopting improved TDMP algorithm

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Embodiment Construction

[0014] Hereinafter, the present invention will be described in detail by illustrating various embodiments of the invention by means of drawings. However, inventive concepts may be embodied in many different forms and should not be construed as limited to the illustrative embodiments set forth herein. Additionally, the same reference numbers may be used to denote similar components in the drawings.

[0015] Specifically, the LDPC code decoding method and circuit using the improved TDMP algorithm provided by the embodiments of the present invention may be applicable to any receiving device under the WLAN system. In other words, the present invention does not limit the specific implementation of the receiving device, and those skilled in the art should be able to make related designs according to actual requirements or applications. In addition, according to the prior art, it is known that the receiving device will receive a coded signal with a plurality of frames output by the ...

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Abstract

Embodiments of the invention provide an LDPC code decoding method and circuit adopting an improved TDMP algorithm. According to the LDPC code decoding method adopting the improved TDMP algorithm, layers of a parity check matrix which has been layered by an existing TDMP algorithm are re-grouped; and in a mode of performing parallel CNU updating operation on all rows in each group at the same timeand performing VNU updating operation on all groups in sequence, the last frame in a coded signal is decoded, so that the number of iterations which can be completed by decoding the last frame is increased, and the performance of the LDPC code decoding method can be relatively improved.

Description

technical field [0001] The present invention relates to a low-density parity-check (Low-density parity-check code, LDPC) code decoding method and circuit, and in particular to an LDPC code decoding method using an improved Turbo Decoding Message Passing (TDMP) algorithm and circuits. Background technique [0002] LDPC code is a kind of linear block code (linear block code) with sparse parity check matrix characteristics. Since the LDPC code has a high coding gain in performance, and its proven error correction ability can be very close to the Shannon Limit (Shannon Limit), the LDPC code has gradually become the most popular communication system in various advanced communication systems (such as: wireless local area network (WLAN) system) ) standards adopted. The traditional LDPC code decoding method includes a check node (CNU) update operation and a variable node (VNU) update operation, because these two update operations must be performed alternately, so the traditional L...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H03M13/11
CPCH03M13/1105
Inventor 贾毅
Owner ALICORP
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