Self-interference mitigation in two-hop relay using two stage projection algorithms

This paper develops an efficient Self-Interference (SI) mitigation algorithm for Multiple-Input and Multiple-Output (MIMO) for Full-Duplex (FD) relays in the indoor wireless communication system. The relayed signal create an SI around the relay transceivers due to the loop-back (LI) signals. The main challenge of implementing FD-MIMO relay is to mitigate the performance degradation induced by the SI. This paper presents an efficient algorithm using Two Stage Projection Algorithm (TSPA) to reduce or remove the SI. The simulation results show that the proposed method minimize efficiently the SI.