A Novel MIMO Detection Scheme Based on D-S Evidence Theory

This paper proposes a novel detection scheme based on Dempster-Shafer (D-S) evidence theory in multiple-input multiple-output (MIMO) systems. The focal-element-set (FES) characterizes the uncertainty contained in the decision statistics, and the corresponding basic-probability-assignment (BPA) of FES is the likelihood measure, acting as the soft-decisions of the transmit signals. The uncertainty can be counteracted during combining the soft information sources from all receive antennas, so more reliable decisions are achieved. Simulation results verify that the proposed algorithm significantly outperforms its conventional detection schemes counterparts with only moderate complexity increases.