OFDM SIGNAL TRANSMITTING/RECEIVING METHOD AND OFDM SIGNAL TRANSMITTING/RECEIVING APPARATUS

摘要

A pilot signal generator has a first pilot signal storing apparatus, a timing controller, and a number, N, of selectors that select and output any of the pilot signals in an OFDM symbol batch of N sections received from the pilot signal storing apparatus. Assume that the number of the subcarriers in an OFDM symbol is I, and that the pilot signal elements are p(i,a,b) for a subcarrier i (1=i=I) of b-th section (1=b=N) of an antenna a (1=a=N) for the number, N of sections, where one section is equivalent to the OFDM symbols or where one section is equivalent to an integral multiple of the OFDM symbols. In a case of a number, N times N times I, of pilot signal elements, or in a case when there exit any overlaps in the pilot signal elements, the first pilot signal storing apparatus stores the number of the pilot signal elements minus the number of those overlaps, then selects the pilot signal elements or a null signal for each subcarrier, and then outputs a thus constructed symbol pilot signal.