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| An Improved Belief-Propagation Algorithm with Channel Estimation of LDPC under Block Fading Channels |
| Deng Jian-min; Yin Chang-chuan; Ji Hong; Yue Guang-xin |
| Telecom Eng. School Beijing Univ. of Posts and Telecom., Beijing 100876 China |
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Abstract Firstly it is proved by simulation that the Low Density Parity Check(LDPC) code has sound performance under block fading channel when decoded by general belief-propagation algorithm. Then based on its special iterative nature, the improved belif-propagation algorithm is proposed under block fading channel with channel estimation in every iterative step. The simulation demonstrates that the proposed algorithm can effectively reduce the iterative times of decoding.
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Received: 13 November 2003
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2005, Vol. 27 
