Low-complexity transceiver design and antenna subset selection for cooperative half- and full-duplex relaying systems

This paper considers the transceiver design and antenna subset selection for cooperative half-duplex relaying (HDR) and full-duplex relaying (FDR) protocols. We first present the low-complexity transceiver design for given antenna subset at each node. Then the antenna subset selection schemes for both FDR and HDR protocols are proposed and evaluated in the terms of outage probability and achievable diversity. For HDR protocol, we show that the increase of antenna subset size, although cannot increase the achievable diversity, does improve the outage performance of the protocol by increasing the coding gain. Moreover, we show that the antenna configuration at the relay can impact the achievable diversity of FDR protocol significantly and the antenna configuration that optimizes the achievable diversity is analyzed.