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对 Ｔｕｒｂｏ码的 ＲＳＣ分量码、交织器、调制方式、信道以及迭代译码算法进行了综合研究与性能分析，并给出了一种基于逐比特ＭＡＰ算法的Ｔｕｒｂｏ编码与多元调制相结合的编码调制方式。仿真结果表明，该方案将Ｔｕｒｂｏ码的高编码增益与多元调制的高频谱利用率有效地结合在一起，是一种功率和频谱高效的编码调制方式，比传统的ＴＣＭ方式有更好的性能。
A comprehensive study and performance analysis of RSC component codes, interleaver, modulation scheme, channel and iterative decoding algorithm of Turbo codes are given. An encoding scheme of Turbo codes based on bit-by-bit MAP algorithm combined with multivariate modulation the way. The simulation results show that this scheme effectively combines the high coding gain of Turbo codes with the high spectrum utilization of multivariate modulation. It is a power and spectrum efficient coding and modulation scheme, which has better performance than the traditional TCM scheme.