16QAM因其高频谱利用率而被第三代移动通信增强型技术HSDPA采用。由于Turbo译码需要软信息输入，因此，解调输出需要计算比特软信息（LLR）。本文分析了LLR理论算法并在此基础上导出了简化算法。-16QAM its high spectral efficiency have been enhanced third-generation mobile communication technology HSDPA use. Turbo decoding requires soft inform

用于学习软判决解调算法,文件中包含用于算法描述的文献,以及对应matlab代码,支持PSK,QPSK,16-QAM,64-QAM四种调制方式-Demodulation algorithm for learning soft decision, contained in the file for the algorithm described in the literature, as well as the corresponding matlab code support PSK, QPSK,

卷积编码，QAM解调器的软比特信息输入viterbi译码器进行软判决译码。-Convolution coding, the soft bit information QAM demodulator input viterbi decoder and soft decision decoding.