WIRELESS COMMUNICATIONS AND MOBILE COMPUTING Wirel. Commun. Mob. Comput. 2001; 1:13–34 REVIEW Space–time coding and signal processing for high data rate wireless communications Ayman F. Naguib* , † Morphics Technology, Inc. 1550 S. Bascom Av., Suite 200 Campbell CA 95008 U.S.A. R. Calderbank AT&T Labs—Research 180 Park Avenue Florham Park NJ 07932 U.S.A. Summary The information capacity of wireless communication systems can be increased dramatically by employing multiple transmit and receive antennas [Foschini GJ, Gans MJ. On limits of wireless communications in a fading environment when using multiple antennas. Wireless Communications Magazine 1998; 6 311–335. Telatar E. Capacity of Multi-Antenna Gaussian Channels, Technical Memorandum, AT&T Bell Laboratories, 1995.] An effective approach to increasing data rate over wireless channels is to employ coding techniques appropriate to multiple transmit antennas, that is space–time coding. Space–time codes introduce temporal and spatial correlation into signals transmitted from different antennas, in order to provide diversity at the receiver, and coding gain over an uncoded system. The spatial–temporal structure of these codes can be exploited to further increase the capacity of wireless systems with a relatively simple receiver structure. This paper provides an overview of space–time coding techniques and the associated signal processing framework. Copyright  2001 John Wiley & Sons, Ltd. KEY WORDS space–time coding array signal processing interference suppression OFDM wireless communications Ł Correspondence to: Ayman F. Naguib, Morphics Technology, Inc., 1550 S. Bascom Av., Suite 200, Campbell, CA 95008, U.S.A. ² E-mail: naguib@morphics.com Copyright  2001 John Wiley & Sons, Ltd.