Layers ordered multiple feedback successive interference cancellation in MU-MIMO

Wireless and mobile communications play vital role in the field of information and communications technologies (ICT) to have an excellent internet mobility (4G and beyond). In this domain, design of efficient and robust MU-MIMO systems is a challenge for researchers. In this paper, we have proposed a new algorithm named as Layers Ordered Multiple Feedback Successive Interference Cancellation (LOMF-SIC). It is based on Spatial Multiplexed (SM), for uncoded MU-MIMO systems. Proposed algorithm has intrinsic novel idea that exploits the arranging layers according to the decreasing order of channel norm, SNR and SINR values of the received symbols. Arrangements of layers mitigate error propagation in the feedback loop and enhance BER performance. Furthermore, we have also proposed Division of Constellation Diagram (DCD) algorithm used to decide the reliability or unreliability of the detected symbols with low complexity. Simulation results are very encouraging and have shown that combination of our proposed algorithms has outperformed the existing techniques of SNR and channel norm. Simulation results have also shown that LOMF-SIC based on SINR has outperformed MF-SIC and conventional SIC methods.