Intelligent MIMO signal detection for spatial multiplexing with D-S theory

In this paper, a novel signal detection scheme is proposed for correlated multiple input multiple output(MIMO) system based on Dempster-Shafer (D-S) evidence theory. The geometrical MIMO model is used for the correlated MIMO system. The focal-element-set (FES) is used to describe the uncertainty for the decision statistics, and the corresponding basic-probability- assignment (BPA) of FES is the likelihood measure, which act as the soft-decisions for the receiver signals. The detection is called intelligent deductions, in which the uncertainty can be mitigated during combining the soft information sources from all received spatial signals, leading to the performance improvement for MIMO system. Simulation results verify that the proposed MIMO detection algorithm outperforms conventional MIMO detection schemes in both independent and correlated MIMO channel.