Interference-Aware Relay Selection Scheme for Two-Hop Relay Networks with Multiple Source-Destination Pairs
An interference-aware relay selection scheme is proposed for two-hop relay networks with multiple Source-Destination (S-D) pairs, each of which is assisted by a relay selected from the candidates. The authors address the interference from relays to their non-intended destinations, and the interference level at any destination is jointly affected by relay selections of all S-D pairs. Upper and lower bounds of the two-hop transmission rate are derived, and the joint impact of the interference from multiple relays is decoupled to each S-D pair. Based on these bounds, an interference-aware relay selection metric for each S-D pair is proposed, which reflects both the relay-assisted twohop rate and the induced interference to other destinations.