Improved sub-block encoder of irregular LDPC code for image transmission

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Author list: Payommai T., Chiracharit W., Chamnongthai K.

Publisher: Hindawi

Publication year: 2011

Start page: 41

End page: 44

Number of pages: 4

ISBN: 9781457715235

ISSN: 0146-9428

eISSN: 1745-4557

URL: https://www.scopus.com/inward/record.uri?eid=2-s2.0-84857546994&doi=10.1109%2fSII.2011.6147416&partnerID=40&md5=7cc349b5ee4390fcc414c896cecdd937

Languages: English-Great Britain (EN-GB)

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Abstract

This paper presents irregular low-density parity-check (LDPC) code for image transmission system with any desired code lengths. Parity position of sub-block encoder is easily constructed over additive white Gaussian noise (AWGN) channel. The code is used as forward error correction (FEC) technique to protect transmitted source data over the channel. The sub-block encoder is designed with various AWGNs at three code lengths of 522, 2,021 and 4,183. The proposed irregular LDPC code reduces bit error when the code length increases. The performance is evaluated by bit error rate (BER) improvement 33.33% and peak signal-to-noise ratio (PSNR) more than 30 at SNR equals 7 dB. ฉ 2011 IEEE.

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