Multicarrier modulation helps to reduce the detrimental effects of multipath fading. Because of its

robustness to multipath, and the ease of implementating it in transmitters and receivers using the

fast Fourier transform (FFT), the MCM concept is growing rapidly in practical importance. It can

be found today in IEEE standards 802.11a, 802.15.3 and 802.16a, as well as standards for digital

broadcasting of television and radio. This document serves to derive the multicarrier modulation

method from first principles.