On calculating the capacity of an infinite-input finite (infinite)-output channel
Chein‐I Chang, L. Davisson · IEEE Transactions on Information Theory · 1988
A version of the Arimoto-Blahut algorithm for continuous channels involves evaluating integrals over an entire input space and thus is not tractable. Two generalized discrete versions of the Arimoto-Blahut algorithm are presented for this purpose. Instead of calculating integrals, both algorithms require only the computation of a sequence of finite sums. This significantly reduces numerical computational complexity.>