Patent ID: 8014269

Claim:
A radio receiver to receive a signal transmitted through a radio transmission path, the signal containing a no-signal interval and an orthogonal frequency division multiplexed (OFDM) symbol, the OFDM symbol starting from a first time point and finishing at a second time point, the no-signal interval starting from the second time point and finishing at a third time point, the radio receiver comprising: a determining unit configured to determine an overlap-addition number based on delay characteristics of the signal received through the radio transmission path; an adder configured to sum data corresponding to the overlap-addition number out of data received in the no-signal interval with a top portion of the OFDM symbol within the first and second time points; and a calculating unit configured to calculate an evaluation parameter of the delay characteristics based on a correlation calculation result between the received signal and a known reference signal, wherein the determining unit determines an overlap-addition number based on the evaluation parameter and compares the evaluation parameter with a prescribed threshold and determines the overlap-addition number based on a comparison result.