METHOD FOR CALCULATING CORRECTION VALUE TO CORRECT LINEAR GRADIENT OF FREQUENCY PHASE CHARACTERISTIC IN OFDM DEMODULATION SIGNAL, AND COMPUTER PROGRAM FOR CALCULATING THE CORRECTION VALUE

摘要

PROBLEM TO BE SOLVED: To provide a method for calculating correction value to correct a linear gradient of the frequency phase characteristic in an OFDM demodulation signal not imposing a large load on the processing for calculating the correction value and a computer program for calculating the correction value. SOLUTION: The correction value calculation method is configured to include steps of: obtaining a unit complex vector indicative of an argument between adjacent OFDM carriers from a result of FFT processing by each carrier number of the OFDM carriers; sequentially multiplying the obtained unit complex vectors; finally calculating unit complex vector streams the number of which is less than the number of the OFDM carrier by one; and obtaining the geometric mean of the calculated unit complex vector streams as the correction value for correcting the linear gradation of the frequency phase characteristic. COPYRIGHT: (C)2004,JPO