METHOD AND AN APPARATUS FOR AN OFDM BASED ON 3D SIGNAL CONSTELLATION BY USING TWO DIMENSION HIGH SPEED INVERSE FOURIER CONVERTER

摘要

PURPOSE: A method and an apparatus for an OFDM based on 3d signal constellation are provided to improve signal-noise ratio by using 3D signal constellation as the signal mapping part.;CONSTITUTION: A signal mapping unit converts the serial input signal into N parallel signals. The signal mapping unit maps the parallel input signals with 3D coordinate of N of the distributed the paralleled input signal at a signal constellation consisting of signaling points. A conversion unit generates two dimension matrices based on mapped N 3D coordinates. An inverse fast Fourier transform unit performs two dimension inverse fast Fourier transform based on 3D coordinate of N converted into two dimension matrices.;COPYRIGHT KIPO 2010