Multi-Branch Layers Ordered Multiple Feedback successive interference cancellation in MUMIMO spatial multiplexing systems

Multi input multi output (MIMO) is a multifarious and captivating technology due to its high data rate and capacity. In this research work, the authors have proposed a novel successive interference scheme for un-coded MIMO spatial multiplexing system with multiple interference cancellation structure. The multi branch multiple feedback successive interference cancellation (MB-MF-SIC) employees multiple SIC in parallel according to ordering of the received signal. The branch which yields best performance is selected which in turn gives higher detection diversity. The arrangement of the layers demolish the propagation of error in the feedback loop and hence enhances the bit error rate performance. Simulation results show that the combination of MB-MF-SIC and the ordering of the layers named Multi Branch Layers Ordered Multiple Feedback SIC (MB-LOMF-SIC) significantly improves the results compared to the existing MF-SIC and conventional SIC schemes.