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Reseach Article

Channel Coding using Low Density Parity Check Codes in AWGN

Published on September 2015 by Rinu Jose, Ameenudeen P.e
International Conference on Emerging Trends in Technology and Applied Sciences
Foundation of Computer Science USA
ICETTAS2015 - Number 2
September 2015
Authors: Rinu Jose, Ameenudeen P.e
ceb7e250-643e-4511-ba30-081e494c2bc3

Rinu Jose, Ameenudeen P.e . Channel Coding using Low Density Parity Check Codes in AWGN. International Conference on Emerging Trends in Technology and Applied Sciences. ICETTAS2015, 2 (September 2015), 32-37.

@article{
author = { Rinu Jose, Ameenudeen P.e },
title = { Channel Coding using Low Density Parity Check Codes in AWGN },
journal = { International Conference on Emerging Trends in Technology and Applied Sciences },
issue_date = { September 2015 },
volume = { ICETTAS2015 },
number = { 2 },
month = { September },
year = { 2015 },
issn = 0975-8887,
pages = { 32-37 },
numpages = 6,
url = { /proceedings/icettas2015/number2/22385-2585/ },
publisher = {Foundation of Computer Science (FCS), NY, USA},
address = {New York, USA}
}
%0 Proceeding Article
%1 International Conference on Emerging Trends in Technology and Applied Sciences
%A Rinu Jose
%A Ameenudeen P.e
%T Channel Coding using Low Density Parity Check Codes in AWGN
%J International Conference on Emerging Trends in Technology and Applied Sciences
%@ 0975-8887
%V ICETTAS2015
%N 2
%P 32-37
%D 2015
%I International Journal of Computer Applications
Abstract

Forward error correction codes (FEC) are used for error detection and correction in communication systems. Low density parity check code (LDPC) is used as a powerful Forward Error Correction code in long distance communication systems which works close to the Shannon limit. Unlike other conventional channel code, the decoding algorithm used for LDPC codes is an iterative message passing algorithm (MPA). They are soft decision and hard decision decoding algorithms. This paper aims at a comparative study between a hard decision algorithm (bit flipping) and a soft decision algorithm (belief propagation). The analysis is based on the Bit Error Rate of decoding outputs. The result shows that the Soft decision decoding gives better performance than the hard decision decoding. LDPC code with soft decision decoding enhances the system performance and makes the long distance communication fast and error free.

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Index Terms

Computer Science
Information Sciences

Keywords

Ldpc Fec Lbc Iterative Decoding Ber Sum Product Decoding Message Passing Algorithm.