Secure Cognitive MIMO Wiretap Networks With Different Antenna Transmission Schemes

被引：4

作者：

Chen, Yong ^{[1
]}

Zhang, Tao ^{[2
]}

Qiao, Xiaoqiang ^{[2
]}

Wu, Hao ^{[2
]}

Zhang, Jiang ^{[2
]}

机构：

[1] Army Engn Univ PLA, Coll Commun Engn, Nanjing 210007, Peoples R China

[2] Natl Univ Def Technol, Res Inst 63, Nanjing 210007, Peoples R China

来源：

IEEE ACCESS | 2021年 / 9卷 / 09期

关键词：

Physical layer security; cognitive radio; differential spatial modulation; secrecy outage probability; secrecy throughput;

D O I：

10.1109/ACCESS.2020.3048158

中图分类号：

TP [自动化技术、计算机技术];

学科分类号：

0812 ;

摘要：

This paper investigates a secure transmission in the multiple-input multiple-output (MIMO) cognitive wiretap networks, where a secondary transmitter (Alice) sends data to a secondary receiver (Bob) in the presence of an eavesdropper (Eve). In order to solve the problems of inter channel interference and inter antenna synchronization encountered by traditional MIMO technologies, the antenna transmission scheme is adopted at the transmitter. As a comparison, we design two different antenna transmission schemes, namely transmit antenna selection maximal-ratio combining (TAS-MRC) scheme and differential spatial modulation maximal-ratio combining (DSM-MRC) scheme, respectively. Moreover, due to outdated channel state information (CSI) of the interference link from Alice to the primary user (PU), we propose power control mechanism to protect the quality of service (QoS) of PU. Furthermore, the closed-form for the secrecy outage probability and the secrecy throughput with TAS-MRC and DSM-MRC schemes are derived to evaluate the secrecy performance, respectively. What's more, we explore the security diversity gain and coding gain based on the asymptotic secrecy outage probability. As the results, it demonstrates that DSM-MRC requires less CSI and is convenient for modulation and demodulation, but sacrifices some secrecy performance gains between two proposed schemes.

引用

页码：5779 / 5790

页数：12

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