Multi-Antenna Relay Aided Wireless Physical Layer Security

被引:112
作者
Chen, Xiaoming [1 ,2 ]
Zhong, Caijun [3 ]
Yuen, Chau [4 ]
Chen, Hsiao-Hwa [5 ]
机构
[1] Nanjing Univ Aeronaut & Astronaut, Elect Engn, Nanjing, Jiangsu, Peoples R China
[2] Nanjing Univ Aeronaut & Astronaut, Coll Elect & Informat Engn, Nanjing, Jiangsu, Peoples R China
[3] Zhejiang Univ, Hangzhou 310003, Zhejiang, Peoples R China
[4] Singapore Univ Technol & Design, Singapore, Singapore
[5] Natl Cheng Kung Univ, Dept Engn Sci, Tainan 701, Taiwan
关键词
POWER ALLOCATION; SECRECY CAPACITY;
D O I
10.1109/MCOM.2015.7355564
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
With the growing popularity of mobile Internet, providing secure wireless services has become a critical issue. Physical layer security (PHY-security) has been recognized as an effective means to enhance wireless security by exploiting wireless medium characteristics, for example, fading, noise, and interference. A particularly interesting PHY-security technology is cooperative relay due to the fact that it helps to provide distributed diversity and shorten access distance. This article offers a tutorial on various multi-antenna relaying technologies to improve security at physical layer. The state-of-the-art research results on multi-antenna relay aided PHY-security as well as some secrecy performance optimization schemes are presented. In particular, we focus on large-scale MIMO relaying technology, which is effective in tackling various challenging issues for implementing wireless PHY-security, such as short-distance interception without eavesdropper CSI and with imperfect legitimate CSI. Moreover, the future directions are identified for further enhancement of secrecy performance.
引用
收藏
页码:40 / +
页数:7
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