Patent ID: 6816453
Filing Date: 2004-11-09
Classification: H04L

Abstract:
An orthogonal frequency division multiplexed signal generator for generating a signal that is orthogonal-frequency-division-multiplexed into two or more sub-carriers, comprising:a data sequence conversion means for arranging first data to be transmitted, in a predetermined order correspondingly to two or more sub-carriers orthogonal to each other on a frequency axis; a delay means for delaying said first data for a predetermined time to output as second data; a power changing means for changing powers of said sub-carriers in accordance with said second data; an inverse discrete Fourier transform means for generating a time-base waveform by synthesizing the two or more sub-carriers changed by said power changing means; and an orthogonal modulation means for performing orthogonal modulation on a real axis signal and an imaginary axis signal which are orthogonal to each other and generated by said inverse discrete Fourier transform means, to synthesize the real axis signal and the imaginary axis signal.