Full-duplex communication for cooperative cognitive radio networks with two simultaneous transmit and receive antennas

Abstract

We address cooperative cognitive radio networks (CCRNs) with secondary users (SUs) exploiting multiple antennas. In order to expand the achievable rate region by enabling full-duplex communication between SUs, we adopt simultaneous transmitting and receiving antennas for the SUs. The link capacities of the proposed framework are analyzed theoretically. It is shown through numerical analysis that the proposed framework can provide a considerable performance gain over the conventional CCRN framework.