Near-quantum optimum receivers for the phase-quadrature coherent-state channel

Abstract

A theoretical analysis of two simple implementations for optical receivers that achieve near-quantum optimum performance for phase-quadrature coherent-state signaling is carried out. For a large received average photon count per symbol, N_s, the error probability is proportional to exp(−2N_s) as opposed to the conventional heterodyne performance of exp(−N_s/2).

© 1993 Optical Society of America

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