On the Outage Performance of Full-Duplex Selective Decode-and-Forward Relaying

Abstract

We evaluate the outage performance in a three-terminal full-duplex relay channel that adopts a selective decodeand-forward protocol, taking relay self-interference into account. Previous work focused on coverage extension scenarios where direct source-destination transmissions are neglected or considered as interference. In this work, we account for the relay self-interference, and exploit the cooperative diversity offered by the independently fading source/relay message replicas that arrive at the destination. We present an approximate, yet accurate, closed-form expression for the end-to-end outage probability that captures their joint effect. With the derived expression in hand, we propose a relay transmit power optimization scheme that only requires the relay knowledge of channel statistics. Finally, we corroborate our analysis with simulations. Index TermsFull-duplex relay, self interference, selective decode-and-forward, cooperative diversity, outage probability.

On the performance of cognitive full-duplex relaying under spectrum sharing constraints

“…In [30], in a non-cognitive radio scenario, the authors evaluate the outage probability of a cooperative network, where the signal of the direct link is exploited at the secondary destination and the relay employs the selectivedecode-and-forward (SDF) protocol. In [31], the authors evaluate the protocols proposed in [30], for a scenario subject to Nakagami-m fading.…”

“…In [31], the authors evaluate the protocols proposed in [30], for a scenario subject to Nakagami-m fading. The proposed protocols have better performance in terms of outage probability than half-duplex and other full-duplex protocols.…”

“…The proposed protocols have better performance in terms of outage probability than half-duplex and other full-duplex protocols. In [32], we evaluated the performance of the scheme proposed in [30] assuming a cooperative cognitive network operating in a spectrum sharing scenario with a FD relay subject to self-interference. However, the interference of the primary network into the secondary network was not considered in the analysis and the relay employed the fixed-decode-and-forward (FDF) protocol.…”

Performance of Nth Worst Full-Duplex Relay Selection over Nakagami-M Fading Channels

“…Relay selection problem in AF cooperative system has been studied in [4], the authors considered dynamically switches between FD and HD relaying based on the instantaneous quality of the loop interference, and they showed that the diversity gain can be significantly improved by employing multiple FD relays. In [5], the opportunistic decode-and-forward (DF) relay selection with FD scheme has been studied. Optimal DF relay selection for FD mode in underlay cognitive radio networks has been studied in [7], in which an optimum relay-selection solution for treating the tradeoff between the improved outage probability and the performance degradation can always be achievable within the signal-to-noise ratio (SNR) range of (10 dB, 15 dB).…”

On the performance of future full-duplex relay selection networks

“…Such a relaying scheme, where the information is only distilled from the multihop path, will be referred to as the multi-hop DF (MHDF) scheme in the sequel. Research efforts have been devoted to investigate the performance under other relaying schemes where the direct link can be also exploited; using block Markov superposition coding (BMSC) [9] and selective relaying [10]. Under the more general Nakagami-m fading model, the outage performance has been also studied for MHDF [11], BMSC [12], and selective relaying [13].…”