Abstract
The performance analysis of Nth worst relay selection for the full-duplex (FD) mode over Nakagami-m fading channels is studied. We assume the relay employs the amplify-and-forward (AF) protocol. The closed-form expres-sions for the outage performance in terms of the received signal-to-noise ratio cumulative distribution function are derived. In the high signal-to-noise ratio regime, asymptotic outage probability is also investigated. Based on these expressions, the effect of several important network parameters, i.e., the number of relays and the order of selected relay, as well as the quality of the relay links, source-relay links, relay-destination links, are analytically characterized. Finally, numerical results are provided to verify and illustrate our mathematical analysis.
Highlights
A large number of existing works on cooperative communications assume halfduplex (HD) relaying, where relays transmit and receive the signal in orthogonal channels [1]
We focus on the outage probability as the performance metric, for which we present an accurate approximation in closed-form by deriving statistical expressions of the effective end-to-end signal-to-noise ratio (SNR)
It is shown that the analytical results are very close to the simulated ones in the whole SNR region
Summary
A large number of existing works on cooperative communications assume halfduplex (HD) relaying, where relays transmit and receive the signal in orthogonal channels [1]. In order to overcome the associated bandwidth loss and improve spectral efficiency, full-duplex (FD) transmission has been investigated in the literature [2]-[8]. In FD mode, the relay transmits and receives the signal at the same time and at the same frequency band. FD operation mode has been considered impractical in the past due to its loop interference problems. After many works on interference mitigation have been reported, the theoretical analysis for FD relaying networks can be possible [2]. For the multiple relay systems, designing an appropriate relay selection
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