2, Model analysis A radical feature of communication: The sent waveform recovery at receiving end with a certain fidelity under noises. Ignoring the content and utility factors, the model of communication exhibits statistical properties. Source Entropy: H(X),HX,Y Mutual Information I(X; Y)=H(X)-H(XY H(Y-H(YX2, Model Analysis Ignoring the content and utility factors, the model of communication exhibits statistical properties. Source Entropy: H(X), H(X, Y) I(X; Y) = H(X) - H(X|Y) = H(Y) - H(Y|X) A radical feature of communication: The sent waveform recovery at receiving end with a certain fidelity under noises. Mutual Information: