Resource Allocations for Secure Cognitive Satellite-Terrestrial Networks

被引：77

作者：

Li, Bin ^{[1
]}

Fei, Zesong ^{[1
]}

Xu, Xiaoming ^{[2
]}

Chu, Zheng ^{[3
]}

机构：

[1] Beijing Inst Technol, Sch Informat & Elect, Beijing 100081, Peoples R China

[2] Natl Digital Switching Syst Engn & Technol Res Ct, Zhengzhou 450002, Henan, Peoples R China

[3] Univ Surrey, Inst Commun Syst, Innovat Ctr 5G, Guildford GU2 7XH, Surrey, England

来源：

IEEE WIRELESS COMMUNICATIONS LETTERS | 2018年 / 7卷 / 01期

基金：

中国国家自然科学基金;

关键词：

Satellite-terrestrial networks; security; cooperative beamforming; perfect and imperfect channel state information;

D O I：

10.1109/LWC.2017.2755014

中图分类号：

TP [自动化技术、计算机技术];

学科分类号：

0812 ;

摘要：

In this letter, we investigate the secure transmission in a cognitive satellite-terrestrial network with a multi-antennas eavesdropper, where the interference from terrestrial base station is introduced to enhance security of the satellite link. Our objective is to minimize the transmit power by jointly optimizing the cooperative beamforming and artificial noise while guaranteeing the secrecy rate constraint for satellite link, the information rate constraint for terrestrial link and the total transmit power constraint. Both scenarios of the perfect and imperfect channel cases are considered. The resulting optimization problems are non-convex and challenging, which are efficiently solved via certain transformations to be reformulated more tractable versions, respectively. Numerical results are provided to corroborate the proposed schemes.

引用

页码：78 / 81

页数：4

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