Evaluating signal detection techniques for 5G MIMO systems

This paper investigates signal detection algorithms for multiple input/multi output (MIMO) systems; an essential technology to be implemented in fifth generation wireless communications (5G). The performances of coherent and non-coherent detection techniques in a single input multiple output (SIMO) and a MIMO system are compared in a Rayleigh fading channel with M-PSK signal input. The receiver diversity technique using maximum ratio combining (MRC) was examined, together with Alamouti space time block codes (STBC). The evaluation of both schemes characterizes their respective drawbacks and also provides a premise in the selection; for optimum performance with regards to 5G MIMO systems. The simulated parameters for benchmarking the detection schemes investigated were bit error rate (BER), ergodic capacity and outage probability.