Absfracl-Multiple antenna radios are recently the subject of much research due to the significant improvements they offer in throughput and reliability in rireless communications. Research in the field of space-time coding has led to the design of modulation techniques offering improved performance. Their performance, although promising in simulations, needs to be studied in real wireless chann...

With space-time codes (STC) the same information is transmitted in appropriate manner simultaneously from different transmit antennas to obtain transmit diversity. The main idea of transmit diversity is that if a message is lost in a channel with probability p and we can transmit replicas of the message over n independent such channels, the loss probability becomes p. Using diversity, more reli...

Outline: • Capacity of MIMO Channels: We discuss the information theo-retic bases for the capacity arguments of MIMO channels and present fundamental results and methods. • Channel Modeling and Realizable Capacity: We discuss simple ray-tracing channel models and study the capacity of these artificially generated channels. Basic conclusions on the behavior of real-world MIMO channels are drawn....

AbstractMost work on wireless communications had focused on having an antenna array at only one end of the wireless link — usually at the receiver. Seminal papers by Gerard J. Foschini and Michael J. Gans, Foschini and Emre Telatar enlarged the scope of wireless communication possibilities by showing that for the highly-scattering environment substantial capacity gains are enabled when antenna ...