TY - JOUR TI - Secrecy Capacity Analysis of an Underlay Cognitive Radio Network in the Presence of Co-channel and Primary Network Interference AB - This study investigates the impact of primary network and co-channel interference on the secrecy outage probability and strictly positive secrecycapacity of an underlay cognitive decode-and-forward relay network in Rayleigh fading channels. We consider a single eavesdropper node that tries tosteal the transmitted signal at each hop. The secrecy outage probability and the strictly positive secrecy capacity are theoretically derived as a functionof the interference sources and fading channels, which has not been studied in the literature. The theoretical results are validated with Monte Carlosimulation results. Consequently, the results show that the secrecy outage probability and the strictly positive secrecy capacity drastically degrade whenthe number of co-channel interference sources and the PN interference power increase AU - BAYAT, Emre AU - Aldırmaz Çolak, sultan DO - 10.5152/electrica.2021.20054 PY - 2021 JO - Electrica VL - 21 IS - 1 SN - 2619-9831 SP - 105 EP - 114 DB - TRDizin UR - http://search/yayin/detay/416749 ER -