Shannon 1948: noisy-channel admits reliable communication at rate R iff R < C = max_p I(X;Y). Channel-capacity. Foundational; achieved by random-codes + LDPC + polar codes (Arıkan).
Shannon 1948: noisy-channel admits reliable communication at rate R iff R < C = max_p I(X;Y). Channel-capacity. Foundational; achieved by random-codes + LDPC + polar codes (Arıkan).