We consider a two-hop infrastructure-based relay link with three transmit power allocation methods. Both amplify-andforward and decode-and-forward protocols are studied. Fundamentally, a relay can operate either in a full-duplex or in a half-duplex mode. The performance in full-duplex relaying is degraded due to loop interference from the relay output to the relay input. On the other hand, the half-duplex mode eliminates the loop interference, but this reduces the end-to-end rate. In this paper, we study the feasibility of the full-duplex mode in terms of end-to-end capacity. In particular, we evaluate break-even loop interference levels, below which the fullduplex mode outperforms the half-duplex mode. The analysis shows that the full-duplex mode is feasible in the presence of reasonably high loop interference power and can offer higher capacity than the half-duplex mode.
It is shown in REF that the FD relaying in the presence of loop interference is indeed feasible and can offer higher capacity than the HD mode.
On the feasibility of full-duplex relaying in the presence of loop interference
2009 IEEE 10th Workshop on Signal Processing Advances in Wireless Communications
2009 IEEE 10th Workshop on Signal Processing Advances in Wireless Communications
Computer Science