Full duplex-ing over two hops under full interference
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Akçapınar, Kudret and Gürbüz, Özgür (2018) Full duplex-ing over two hops under full interference. In: IEEE Wireless Advanced (WIAD) Conference: Workshop - Scalable Full-Duplex Dense Wireless Networks (SENSE), London, UK
In this paper, we study the optimization of transmission
power in a two hop in-band full-duplex (IBFD) relaying
scenario under full interference, i.e., when the source and
destination nodes hear each other, which is highly likely in
cellular or dense wireless networks. Considering imperfect selfinterference
(SI) cancellation for IBFD operation at the relay
node, we propose closed form solutions for calculating the power
levels for the simultaneously transmitting nodes in an effort to
achieve the maximum end-to-end throughput, and we derive an
optimal power assignment policy. We compare the end-to-end
throughput performance of IBFD relaying with proposed power
assignment to that of traditional half-duplex (HD) relaying. Our
results show the efficacy of power control for IBFD relaying,
and show that the amount of performance improvement over
traditional HD relaying depends on the level of SI suppression.
More specifically, IBFD relaying has shown to be superior to HD
relaying by up to 50% in the investigated scenarios.
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