This Book broadly addresses two research problems in MIMO with OFDM system namely PAPR and ISI/ICI and proposed an iterative receiver for MIMO-OFDM system. The fundamental techniques of OFDM systems were given in Chapter-2. The concept of PAPR in OFDM signals and PAPR reduction techniques have been investigated. Chapter-3 describes MIMO-OFDM system under Rayleigh fading channels.The basic principle of MIMO STBC-OFDM and MIMO SFBC-OFDM coding techniques are demonstrated through derivations and simulations. Chapter-4 addresses the development and simulation of an interference cancelling algorithm for cancelling ISI and ICI in MIMO SFBC-OFDM systems with timing offset. Chapter-5 presents MIMO SFBC CI-OFDM on two-transmit and two-receive antennas.