Patent ID: 8363755

Claim:
A signal receiving apparatus comprising: acquisition means for acquiring an Orthogonal Frequency Division Multiplexing signal resulting from combination of a plurality of signals transmitted by a plurality of signal transmitting apparatus by adoption of an Orthogonal Frequency Division Multiplexing method; and demodulation means for carrying out partial processing of processing to demodulate said Orthogonal Frequency Division Multiplexing signal acquired by said acquisition means by making use of either first pilot signals or second pilot signals where said first pilot signals are pilot signals extracted from said Orthogonal Frequency Division Multiplexing signal acquired by said acquisition means as signals having a same phase for all said signal transmitting apparatus, said second pilot signals are pilot signals extracted from said Orthogonal Frequency Division Multiplexing signal acquired by said acquisition means as signals having different phases depending on said signal transmitting apparatus, and wherein said demodulation means has filter center-position search means for carrying out said partial processing of said processing to demodulate said Orthogonal Frequency Division Multiplexing signal by performing processing to find a center position of a frequency interpolation filter.