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| Low-Density Parity-Check Codes and Their Application in Image Transmission |
| Ma Pi-ming; Yuan Dong-feng; Yang Xiu-mei; Zhang Hai-gang |
| Information Science and Engineering School of Shandong University Jinan 250100 China |
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Abstract Low-Density Parity-Check (LDPC) codes are a class of channel codes based on graphs and iterative decoding whose performance is very close to the Shannon limit with low complexity and have strong error control strength. In this paper, encoding and decoding principles of LDPC codes are deeply studied. At the same time, this coding scheme is applied in image transmission system over Rayieigh fading channel. The simulation results indicate that LDPC codes can make the quality of the image highly improved with rather low system complexity and short decoding time delay.
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Received: 10 April 2003
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2004, Vol. 26 
