Improved Interleaving Scheme for DVB-S2 BICM System
DVB-S2 is used as the most popular standard for satellite communications for its efficient BICM structure and outstanding error performance. And the interleaver of DVB-S2 is a simple model with rows-reading columns-writing, wich is convenient for implementation. However, the error performance would be affected by the multi-edge modulated symbols, which can not be eliminated by the original simple interleaver. So in this paper, we focus on the impact of multi-edge LDPC symbols on the performance of the DVB-S2 system, and propose an improved interleaving scheme to prevent the performance degradation caused by the multi-edge modulated symbols. The new interleaving shceme can improve the decoding performance of DVB-S2 BICM system with a little extra computational complexity compared with the original interleaver. Simulation results show that the DVB-S2 BICM system with our proposed interleaver outperforms the traditional system in different code lengths, rates, modulations and channels.
LDPC code DVB-S2 BICM system interleaver multi-edge symbol EXIT chart
Kangming Jiang Ying Wang
Guangdong Power Dispatching and Controlling Center Guangzhou, China Guangdong Power Dispatching and Controlling CenterGuangzhou, China
国际会议
南京
英文
1-5
2011-11-09（万方平台首次上网日期，不代表论文的发表时间）