Outage Performance of Dual-Hop MIMO AF Relaying with Multiple Interferences
Yan Wang, Min Li · 2018
In this paper, we investigate the outage performance of a general dual-hop multiple-input multiple-output (MIMO) amplify-and-forward (AF) relay network, where the source, relay and destination are all equipped with multiple antennas. By considering maximal-ratio-transmission (MRT) and maximal-ratio combining (MRC) for the transmitter and receiver, respectively, we first obtain the output signal-to-interference-plus-noise ratio (SINR) of the dual-hop AF relay system with multiple co-channel interferences (CCIs) and noise at the relay. Then, we derive closed-form expressions of the outage probability (OP) for both the fixed-gain and variable-gain multi-antenna relaying systems. Finally, computer simulations are carried out to validate the performance analysis. Our new analytical expressions not only provide a fast and efficient method to evaluate the outage performance of the system, but also enable us to gain valuable insights into the effects of key parameters on the performance of the dual-hop AF relaying system benefit from implementing multiple antennas at each of the three nodes in the relaying network.