Underlay Cognitive Radio With Instantaneous Interference Constraint: A Secrecy Performance

被引：6

作者：

Thakur, Shilpa ^{[1
]}

Singh, Ajay ^{[1
]}

机构：

[1] Indian Inst Technol Jammu, Dept Elect Engn, Jammu 181221, Jammu & Kashmir, India

来源：

IEEE TRANSACTIONS ON VEHICULAR TECHNOLOGY | 2021年 / 70卷 / 08期

关键词：

Interference; Receiving antennas; Transmitting antennas; Rayleigh channels; Radio transmitters; Eavesdropping; Security; Antenna selection; cognitive radio networks; interference constraint; outdated channel state information; primary interference; secure communication; secrecy outage probability; ANTENNA SELECTION;

D O I：

10.1109/TVT.2021.3093071

中图分类号：

TM [电工技术]; TN [电子技术、通信技术];

学科分类号：

0808 ; 0809 ;

摘要：

We examine the secrecy performance of the receive antenna selection scheme in interference-limited underlay cognitive radio network (CRN) where the antenna that results in the highest signal-to-interference ratio at the secondary receiver is chosen to improve the secrecy performance of the secondary transmission. Exact and asymptotic expressions for the secrecy outage probability and intercept probability are derived for an interference-limited scenario over a general fading scenario with the assumption that the channel state information (CSI) on the secondary transmitter (ST)- primary receiver (PR) channel is perfect. However, CSI on the ST-PR channel may be outdated due to the time-varying properties or feedback latency from the PU. If the ST allocates transmission power using this outdated CSI, PR's interference constraint will not be satisfied. Therefore, we investigate the impact of outdated CSI on the secrecy performance of an interference-limited CRN when interference from the primary transmitter to SU exits under peak interference power constraint.

引用

页码：7839 / 7844

页数：6

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