诺玛
认知无线电
Nakagami分布
计算机科学
物理层
保密
吞吐量
频道(广播)
计算机网络
衰退
计算机安全
电信
无线
电信线路
作者
Zhongwu Xiang,Weiwei Yang,Gaofeng Pan,Yueming Cai,Yi Song
出处
期刊:IEEE Journal of Selected Topics in Signal Processing
[Institute of Electrical and Electronics Engineers]
日期:2019-06-01
卷期号:13 (3): 700-714
被引量:140
标识
DOI:10.1109/jstsp.2019.2902103
摘要
This paper investigates physical layer security (PLS) in cognitive radio inspired non-orthogonal multiple access (CR-NOMA) networks with multiple primary and secondary users. To manage the interferences among the users and guarantee the quality of services of primary users, a new secure NOMA transmission strategy is designed, where the primary and secondary users are paired according to their channel gains, respectively, and power-domain NOMA is employed to transmit the signal. Then, the closed-form expressions for connection outage probability, secrecy outage probability, and effective secrecy throughput are derived for the primary users over Nakagami-m fading channels when the secondary users are considered as eavesdroppers. Typically, the secrecy performance can be improved by pairing the primary users with best channel gains or reducing the number of secondary users. In addition, we also investigate the performances of secondary users by deriving the closed-form expressions for throughput of secondary network. Furthermore, simulations are conducted to verify our analysis results and provide insights into the impact of the parameters on system performance.
科研通智能强力驱动
Strongly Powered by AbleSci AI