The capacity of the semideterministic relay channel (Corresp.)
Abbas El Gamal, Mohammadreza Aref · IEEE Transactions on Information Theory · 1982
The capacity of the class of relay channels with senderx_{1}, a relay senderx_{2}, a relay receivery_{1}=f(x_{1},x_{2}), and ultimate receiveryis proved to beC = \max\min_{p(x_{1},x_{2})} \{I(X_{1}, X_{2}; Y), H(Y_{1}|X_{2})+I(X_{1};Y|X_{2},Y_{1}})\}.