实现了无线通信中需要使用的信道模型，分析各种模型下的输入信号后的仿真和分析-On the basis of the study in multi-path propagation theory, characteristics and mathematics models of wireless channels, and the analysis of references from both domestic and international realm, this thesis will

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vad_directed_by_noise_classification.m This code is an implementation of VAD algorithm proposed in: Robust voice activity detection directed by noise classification please cite the article in your paper: Robust voice activity detec