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Design of Decoder using Modified Hybrid Weighted Symbol Flipping for Nonbinary Ldpc Codes

Published on November 2014 by M.dharani, C.kalamani
journal_cover_thumbnail

International Conference on Innovations in Information, Embedded and Communication Systems
Foundation of Computer Science USA
ICIIECS - Number 2
November 2014
Authors: M.dharani, C.kalamani
69153434-e37e-4540-aae9-bd9d7963b464

M.dharani, C.kalamani . Design of Decoder using Modified Hybrid Weighted Symbol Flipping for Nonbinary Ldpc Codes. International Conference on Innovations in Information, Embedded and Communication Systems. ICIIECS, 2 (November 2014), 44-49.

@article{
author = { M.dharani, C.kalamani },
title = { Design of Decoder using Modified Hybrid Weighted Symbol Flipping for Nonbinary Ldpc Codes },
journal = { International Conference on Innovations in Information, Embedded and Communication Systems },
issue_date = { November 2014 },
volume = { ICIIECS },
number = { 2 },
month = { November },
year = { 2014 },
issn = 0975-8887,
pages = { 44-49 },
numpages = 6,
url = { /proceedings/iciiecs/number2/18662-1466/ },
publisher = {Foundation of Computer Science (FCS), NY, USA},
address = {New York, USA}
}
%0 Proceeding Article
%1 International Conference on Innovations in Information, Embedded and Communication Systems
%A M.dharani
%A C.kalamani
%T Design of Decoder using Modified Hybrid Weighted Symbol Flipping for Nonbinary Ldpc Codes
%J International Conference on Innovations in Information, Embedded and Communication Systems
%@ 0975-8887
%V ICIIECS
%N 2
%P 44-49
%D 2014
%I International Journal of Computer Applications
Abstract

A hybrid decoding algorithm which proposed for nonbinary and binary low density parity (LDPC) codes, both the algorithm combines the weighted symbol flipping (WSF) algorithm with the fast Fourier transform q-ary sum product algorithm (FFT-QSPA). The flipped position and value are determined by the symbol flipping metric and the received bit values in the first stage WSF algorithm. If the low complexity WSF algorithm is failed, the second stage FFT-QSPA is activated as a switching strategy. They are particularly effective for decoding LDPC codes constructed based on finite geometries and finite fields. Analyzing both the techniques nonbinary LDPC codes gives the better error performance and greatly reduces the computation complexity compared to binary LDPC codes. The proposed hybrid algorithm is used for some applications in communication systems for high speed and low power consumption.

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Index Terms

Computer Science
Information Sciences

Keywords

Nonbinary And Binary Low Density Parity-check (ldpc) Code Weighted Symbol –flipping (wsf) Hybrid Weighted Symbol-flipping (hwsf) Iterative Decoding.