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Browse Journals & Magazines > Systems Engineering and Elect ...> Volume:16 Issue:1 Help

Irregular and regular LDPC codes with high spectrum efficiency modulation in image transmission over fading channel

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2 Author(s)
Piming, Ma ; School of Information Science and Engineering, Shandong University, Jinan 250100, P. R. China ; Dongfengs, Yuan

If the degree distribution is chosen carefully, the irregular low-density parity-check (LDPC) codes can outperform the regular ones. An image transmission system is proposed by combining regular and irregular LDPC codes with 16QAM/64QAM modulation to improve both efficiency and reliability. Simulaton results show that LDPC codes are good coding schemes over fading channel in image communication with lower system complexity. More over, irregular codes can obtain a code gain of about 0.7 dB compared with regular ones when BER is 10−4. So the irregular LDPC codes are more suitable for image transmission than the regular codes.

Published in:
Systems Engineering and Electronics, Journal of  (Volume:16 ,  Issue: 1 )

Date of Publication: March 2005

Page(s):
26 - 30
Product Type:
Journals & Magazines
Date of Current Version :
17 January 2012
Issue Date :
March 2005
Sponsored by :
Beijing Institute of Aerospace Information (BIAI)

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