Linear-complexity detection with iterative processing for space-time coded systems

This paper considers wireless data transmission over multi-input, multi-output (MIMO) channels when only the receiver has perfect channel state information. A linear-complexity space-time detector is derived in the context of a turbo-code-based space-time transmitter and iterative processing (turbo detection, demodulation and decoding). Simulation results illustrate that the proposed receivers, suitable for uplink transmission, perform at a level within 2 to 3 dB of the ergodic channel capacity on MIMO channels affected by uncorrelated and correlated Rayleigh flat fading.