English (United Kingdom)

https://curated-unify.zendy.io/wp-json/zendy-region/v1/featured_content/oa?rat=en

https://curated-unify.zendy.io/wp-json/zendy-region/v1/highlighted_journal/

Global: Zendy Plus annual

Presents the access of premium content as premium feature

Premium Content

Presents the keyphrase highlighting as premium feature

Keyphrase Highlighting

Presents the summarisation as premium feature

Summarisation

Insights

Presents the pdf analysis as premium feature

PDF Analysis

Presents the zaia usage as premium feature

ZAIA

Global: Zendy Plus monthly

Global: Zendy Tools annual

Global: Zendy Tools monthly

Global: Zendy Free Plan

This paper investigates power control and relay selection in Full DuplexCognitive Relay Networks (FDCRNs), where the secondary-user (SU) relays cansimultaneously receive data from the SU source and forward them to the SUdestination. We study both non-coherent and coherent scenarios. In thenon-coherent case, the SU relay forwards the signal from the SU source withoutregulating the phase; while in the coherent scenario, the SU relay regulatesthe phase when forwarding the signal to minimize the interference at theprimary-user (PU) receiver. We consider the problem of maximizing thetransmission rate from the SU source to the SU destination subject to theinterference constraint at the PU receiver and power constraints at both the SUsource and SU relay. We then develop a mathematical model to analyze the datarate performance of the FDCRN considering the self-interference effects at theFD relay. We develop low-complexity and high-performance joint power controland relay selection algorithms. Extensive numerical results are presented toillustrate the impacts of power level parameters and the self-interferencecancellation quality on the rate performance. Moreover, we demonstrate thesignificant gain of phase regulation at the SU relay.

Power Allocation for Full-Duplex Relay Selection in Underlay Cognitive Radio Networks: Coherent versus Non-Coherent Scenarios