In today's scenario there is need to transmit the information through wireless medium, quickly and accurately.Orthogonal Frequency Division Multiplexing (OFDM), because of its resistance to multipath fading, has attracted increasing interest in recent years as a suitable modulation scheme for commercial high-speed broadband wireless communication systems.There are different parameters which alters the performance of OFDM system.This book presents the effect of different parameters such as number of subcarriers, modulation schemes etc, on OFDM syste