Eecient Use of Wideband Spatio-temporal Wireless Channels given Channel State Information

A orthogonal decomposition of a general wideband space-time multipath channel is derived assuming antenna arrays at both the transmitter and receiver. Knowledge of channel state information at the transmitter is used to decompose the channel. This decomposition serves as a framework for eeciently managing the degrees of freedom in the space-time channel to trade-oo diversity and throughput. Signal-ing and receiver designs for diversity and high data rate applications are derived using this decomposition. The trade-oo between bit-error rate and throughput for single-user systems is studied. For a xed throughput system, we investigate a power allocation scheme that minimizes the bit-error rate.