Multichannel multiuser detection of space-time turbo codes: experimental performance results

Wireless communication using multiple-input multiple-output (MIMO) systems enables increased spectral efficiency and improved reliability for a given total transmit power. We discuss channel phenomenology and space-time turbo coding. Space-time turbo codes combine the advantages of turbo codes with MIMO systems. The performance of receiver options is investigated, including multichannel multiuser detectors (MCMUD) that iteratively employ space-time-frequency adaptive processing, multiuser detection, and joint channel-data estimation. MIMO capacity is a strong function of channel phenomenology, motivating experimental performance evaluation. Results from outdoor experimental data using a 2 bits/s/Hz, 4/spl times/4 space-time turbo code are presented.