Derivation of classical capacity of quantum channel for discrete information source
Kentaro Kato, Masao Osaki, Osamu Hirota
Abstract
In this letter, we prove that the classical capacity of quantum channel for M symmetric states is achieved by an uniform distribution on a priori probabilities. We also investigate non-symmetric cases such as a ternary amplitude shift keyed signal set and a 16-ary quadrature amplitude modulated signal set in coherent states.
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