Patent ID: 8514962
Filing Date: 2013-08-20
Classification: H04B,H04J,H04L

Abstract:
1. A receiving device of a mobile station, the receiving device being configured to process an OFDM signal transmitted from any of a plurality of control station devices each comprising an OFDM transmitting device that is in a respective cell, the OFDM signal consisting of N (N is an integer not less than 2 and satisfying 2 n-1 <N≦2 n , wherein n is an integer not less than 1) subcarriers, the receiving device comprising: a receiving unit configured to receive a symbol to estimate a channel response, the symbol having been transmitted after applying, to each of the subcarriers, a different amount of phase rotation for each control station such that phase difference between adjacent subcarriers is constant; a first Fourier transform unit configured to perform a Fourier transform on the received symbol to estimate a channel response; a code multiplying unit configured to multiply each subcarrier subjected to Fourier transform by a complex conjugate of a sequence used as the symbol to estimate a channel response at the transmission; an inverse Fourier transform unit configured to perform an inverse Fourier transform on said signal and to calculate delay profiles from antennas of each control station; a selecting unit configured to select a control station to be connected based on said calculated delay profiles; a filtering unit configured to time-filter only a delay profile of a control station to be connected based on said calculated delay profiles; and a second Fourier transform unit configured to perform a Fourier transform on said time-filtered signal and estimating a channel response.