基于卷积码、LDPC码、Turbo码的BICM—ID性能的研究

比特交织编码调制迭代译码（BICM—ID）是一种编码、调制和迭代译码相结合的技术，主要应用于无线通信中的信道编译码．BICM—ID在结构设计上加入了比特交织器和软输入软输出（SISO）译码器，结合迭代译码，最终实现次优译码．不同的编码方法在BICM—ID系统中也有着很大的性能差异，针对几种常见纠错编码方法——卷积码、Turbo码、LDPC码，在BICM—ID系统下的误码率性能进行比较．仿真得到系统在AWGN信道和Rayleigh衰落信道下的误码率曲线，表明不同纠错编码的BICM-ID系统性能与理论分析相一致．

The BICM-ID performance research based on convolutional codes,LDPC codes and Turbo codes

Bit-interleaved coded modulation and iterative decoding （BICM-ID） is a technology of combining coding, modulation and iterative decoding, mainly used in wireless communication. In the structural design, BICM-ID has bit interleaver and soft-input soft-output （SISO） decoder, and is combined with iterative decoding, which can ultimately achieve sub-optimal decoding. Different coding ways in the BICM-ID are also very different in performance. This paper presents a comparison of several common methods of error correction coding, such as convolutional codes, Turbo codes, and LDPC codes in the BER performance of BICM-ID system. Simulation results demonstrate the bit error rate curves of BICM-ID system in the AWGN channel and Rayleigh fading channels, so a conclusion can be drawn that the performance of BICM-ID system with different error-correcting codes is consistent with the theoretical analysis.