通道容量

定義

X代表已傳送訊號的隨機變數Y代表已收到訊號的隨機變數${\displaystyle \ p_{Y|X}(y|x)}$代表已知X的情況下Y條件分布，為通道的內在固定屬性。於是依據如下性質

${\displaystyle \ p_{X,Y}(x,y)=p_{Y|X}(y|x)\,p_{X}(x)}$

${\displaystyle \ C=\sup _{p_{X}(x)}I(X;Y)\,}$

參考文獻

1. ^ Saleem Bhatti. Channel capacity. Lecture notes for M.Sc. Data Communication Networks and Distributed Systems D51 -- Basic Communications and Networks. （原始內容存檔於2007-08-21）.
2. ^ Jim Lesurf. Signals look like noise!. Information and Measurement, 2nd ed.
3. ^ Thomas M. Cover, Joy A. Thomas. Elements of Information Theory. John Wiley & Sons, New York. 2006.