光受信器及び既知信号検出方法

摘要

PROBLEM TO BE SOLVED: To provide a photoreceiver and a known signal detection method, capable of reducing a deterioration in synchronization characteristics of received signals.;SOLUTION: A photoreceiver includes: an acquisition unit to acquire a known signal sequence including a plurality of specific signal sequences arranged in a specific period in a time direction; an autocorrelation acquisition unit to acquire a component amount of autocorrelation coefficients between the specific signal sequences for each period; a specific frequency component acquisition unit to acquire a component amount of the autocorrelation coefficients of the specific period in a component amount of the autocorrelation coefficients for each period; and an autocorrelation position detection unit to detect a position where a component amount of autocorrelation coefficients of the specific period is maximum in a frame including the known signal sequence.;SELECTED DRAWING: Figure 1;COPYRIGHT: (C)2019,JPO&INPIT