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

In this paper, an underlay cognitive radio system, which consists of a primary-user (PU) transmitter (TX), a PU receiver (RX), a secondary-user (SU) TX, and a SU&#x005F;RX, is considered. Benefitting from the underlay mode, SU&#x005F;TX can deliver its information to SU&#x005F;RX by sharing the spectrum resource authorized to PU. It is assumed that SUs are equipped with a single transmitting antenna and a single receiving antenna, which are isolated, and work in full-duplex (FD) mode. By considering that the information signal transmitted from PU&#x005F;TX to PU&#x005F;RX may be eavesdropped by SU&#x005F;TX if SU&#x005F;TX is malicious, we investigate the secrecy outage performance of the PU system. The approximated closed-form expression for secrecy outage probability (SOP) and the lower boundary of the asymptotic SOP have been derived and verified by simulation results. Our results reveal the impact of the eavesdropping of the SU and the FD mode adopted at the SU transmitter on the secrecy performance of the PU system in underlay spectrum sharing mode.

Secrecy Outage Analysis on Underlay Cognitive Radio System With Full-Duplex Secondary User