Patent ID: 8218660
Filing Date: 2012-07-10
Classification: H04L

Abstract:
1. A receiver for processing an Orthogonal Frequency Division Multiplexing (OFDM) signal as a received signal including one or more carrier signals, comprising: Fast Fourier Transform (FFT) processing means for executing FFT processing for the received signal to obtain FFT processing results at a plurality of points for each carrier; and selection means for selecting one point from plural points for each carrier based on the FFT processing results from the FFT processing means, wherein an FFT processing result corresponding to the one point selected by the selection means is used for demodulation processing, wherein the FFT processing means executes the FFT processing for the received signal in a time domain for a sampling period of time which is m times an interval of the FFT process to thereby obtain FFT processing results at m points for each carrier, where m is an integer equal to or more than two, wherein the selection means selects the one point from the m points for each carrier based on the FFT processing results from the FFT processing means, the one point being a point at which a level of the FFT processing result for the carrier becomes maximum, and wherein the selection means includes for each carrier judge means which compares levels of power values of the FFT processing results with each other to determine that the point at which the level of the FFT processing result becomes a maximum value is an optimal point for the carrier.