Multi-Edge Elimination-Based Interleaver for LDPC-CODED BICM Systems

In this paper, the impact of multi-edge LDPC symbols on the performance of the bit-interleaved coded modulation (BICM) system is investigated. To avoid the performance degradation caused by multi-edge symbols, we propose a multi-edge elimination-based interleaver design for the LDPC-coded BICM system. It can improve the decoding performance of LDPC-coded BICM system with a little extra computational complexity. Simulation results show that the LDPC-coded BICM system with our proposed interleaver outperforms the traditional system in different code lengths, rates, modulations and channels.