Achievable Secure Degrees of Freedom of K-User MISO Broadcast Channel With Imperfect CSIT

被引：3
|
作者：
Fan, Ye [1 ]
Liao, Xuewen [1 ]
Gao, Zhenzhen [1 ]
Leung, Victor C. M. [2 ]
机构：
[1] Xi An Jiao Tong Univ, Dept Informat & Commun Engn, Xian 710049, Shaanxi, Peoples R China
[2] Univ British Columbia, Dept Elect & Comp Engn, Vancouver, BC V6T 1Z4, Canada
来源：
IEEE WIRELESS COMMUNICATIONS LETTERS | 2019年 / 8卷 / 03期
基金：
中国国家自然科学基金;
关键词：
Physical layer security; achievable secure degrees of freedom; rate splitting; jamming; imperfect CSIT; WIRETAP CHANNEL; TRANSMISSION; NETWORKS; SYSTEMS;
D O I：
10.1109/LWC.2019.2900310
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 derive the achievable secure degrees of freedom (SDoF) of K-user multiple-input single-output broadcast channel with imperfect channel state information (CSI) at the transmitter. With the help of an N-j-antenna external jammer, we propose a jamming rate splitting (J-RS) scheme to ensure the security of two wiretap models: 1) broadcast channel with confidential messages and 2) broadcast channel with an N-e-antenna external eavesdropper, where each legal node has no CSI of wiretap channels. Our converse is based on the degrees of freedom (DoF) of the network with secrecy constraints, and the achievability is based on J-RS. By numerical analysis, it indicates that the proposed scheme can achieve more SDoF than the traditional rate splitting scheme, zero forcing scheme, and jamming scheme, which can reach to the DoF of the network.
引用
收藏
页码：933 / 936
页数：4
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