Microsoft Word - wseas
نویسندگان
چکیده
If the degree distribution is chosen carefully, the irregular LDPC codes can outperform the regular ones. In this paper, we proposed an LDPC coded BICM scheme in image transmission system to improve both efficiency and reliability. Simulation results show that LDPC codes are good coding schemes over fading channel in image communication with lower system complexity. Simultaneously, irregular codes can obtain a code gain of about 0.7dB than regular ones when BER is 10. So the irregular LDPC codes are more suitable for image transmission than the regular codes. Key-words:irregular LDPC codes, degree distribution, density evolution, image transmission, BICM
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