Channel Capacity

Information Theory

C=max I(X;Y). Shannon capacity theorem.

graph TD D1["Def: Channel\np(y|x) conditional"] D2["Def: Capacity\nC = max I(X;Y)"] D3["Def: DMC\nmemoryless"] D4["Def: Input constraint\nE[cost(X)]≤B"] T1["Thm: Shannon capacity\nC = max I(X;Y)"] T2["Thm: Coding thm\nRC ⇒ unreliable"] T4["Thm: AWGN\nC = ½ log(1+SNR)"] T5["Thm: Blahut–Arimoto\nalg for C"] D1 --> D2 D2 --> D3 D3 --> T1 T1 --> T2 T2 --> T3 classDef definition fill:#b197fc,color:#fff classDef theorem fill:#51cf66,color:#fff class D1,D2,D3,D4 definition class T1,T2,T3,T4,T5 theorem

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Frontier: math.IT