Near-Quantum Optimum Receivers for the Phase-Quadrature Coherent-State Channel

摘要

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