A Novel Adaptive Detection Algorithm Jointly Utilizing Channel Estimation for MIMO System in Continuous Flat Fading Channels

The Vertical Bell Laboratories Layered Space-Time (V-BLAST) system can provide high capacity over rich scattering channel. The conventional minimum mean square error (MMSE) detection for V-BLAST is not suitable for time-varying channel due to high complexity. In the paper, we proposed an adaptive detection algorithm, which combines maximum likelihood (ML) channel estimator and least mean squares (LMS) algorithm together. The proposed adaptive methodology can also be used in the base station (BS) of the MIMO-MU system, where the V-BLAST adaptive receiver and the transmitting preprocessing technique are jointly designed in BS with MIMO-MU detection over time-varying channels. From the simulations, we can see the proposed detection method can outperform the conventional MMSE detection with lower complexity.