TY - JOUR T1 - Partial-Duplex Amplify-and-Forward Relaying: Spectral Efficiency Analysis under Self-Interference JF - IEEE Transactions on Wireless Communications Y1 - 2019 A1 - R. López-Valcarce A1 - C. Mosquera KW - full-duplex KW - myrada KW - winter AB -
We propose a novel mode of operation for Amplify-and-
Forward relays in which the spectra of the relay input and
output signals partially overlap. This partial-duplex relaying mode
encompasses half- and full-duplex as particular cases. By viewing
the partial-duplex relay as a bandwidth-preserving Linear
Periodically Time-Varying system, a spectral efficiency analysis
under self-interference is developed. In contrast with previous
works, self-interference is regarded as a useful informationbearing
component rather than simply assimilated to noise. This
approach reveals that previous results regarding the impact of
self-interference on (full-duplex) relay performance are overly
pessimistic. Based on a frequency-domain interpretation of the
effect of self-interference, a number of suboptimal decoding
architectures at the destination node are also discussed. It is found
that the partial-duplex relaying mode may provide an attractive
tradeoff between spectral efficiency and receiver complexity.
VL - 18 IS - 4 ER -