Space-time receiver for wideband BLAST in rich-scattering wireless channels

Previous results in information theory have demonstrated the enormous capacity potential of wireless communication systems with antenna arrays at both the transmitter and receiver. To exploit this potential, the Bell-laboratories LAyered Space-Time (BLAST) architecture was proposed. BLAST systems transmit parallel data streams, simultaneously and on the same frequency, in a Multiple-Input Multiple-Output (MIMO) fashion. With rich multipath propagation, these different streams can be separated and recovered at the receiver. The analysis of BLAST presented thus far had always been strictly narrowband. In this paper, we extend the formulation by presenting a receiver devised for more general frequency-selective channels. This new receiver is evaluated-via simulation-in the context of a typical urban (TU) channel with excellent results