Patent ID: 7149266

Claim:
A signal receiver receiving and demodulating a reception signal formed of a data symbol section where symbols are assigned in parallel to a plurality of subcarriers and modulated and a start symbol added ahead of said data symbol section, said signal receiver comprising: a first memory adapted to store N(N is an integer of 2 or more) types of reference signals, each corresponding only to an arbitrary portion in said start symbol, cross correlators adapted to calculate a cross correlation value between said reception signal and each of said N types of reference signals, a peak position detector adapted to detect a peak position of each of the N cross correlation values calculated by said cross correlators, a frequency offset estimation circuit adapted to estimate a frequency offset estimate value of a subcarrier of said reception signal for output, based on a cross correlation value at each of the N peak positions detected by said peak position detector, and a frequency offset compensator adapted to compensate for a frequency offset of a subcarrier of said reception signal based on the frequency offset estimate value estimated by said frequency offset estimation circuit.