Radio signal reception synchronization method, radio signal reception device and radio system

摘要

PROBLEM TO BE SOLVED: To provide a radio signal reception synchronization method, radio signal receiver, and a radio system including the radio signal receiver using an autocorrelation system where an error does not occur in timing synchronization.SOLUTION: A radio signal reception synchronization method for performing reception synchronization of a radio signal whose unit is a combination of a signal of a predetermined length and a copy of tail part of the signal added to the beginning of the signal, by using correlation calculation includes the steps of: generating a reference radio signal obtained by delaying the received radio signal by the predetermined length; generating a correlation window whose length is shorter than the length of the tail part of the signal; performing correlation calculation of the received radio signal and the reference radio signal generated from the received radio signal, by using the generated correlation window (step S3); and identifying a synchronization position for extracting the signal, on the basis of a result of the correlation calculation (step S7).