A Survey on Multiple-Antenna Techniques for Physical Layer Security

Xiaoming Chen, Derrick Wing Kwan Ng, Wolfgang H. Gerstacker, Hsiao Hwa Chen

Research output: Contribution to journalReview articlepeer-review

298 Citations (Scopus)


As a complement to high-layer encryption techniques, physical layer security has been widely recognized as a promising way to enhance wireless security by exploiting the characteristics of wireless channels, including fading, noise, and interference. In order to enhance the received signal power at legitimate receivers and impair the received signal quality at eavesdroppers simultaneously, multiple-antenna techniques have been proposed for physical layer security to improve secrecy performance via exploiting spatial degrees of freedom. This paper provides a comprehensive survey on various multiple-antenna techniques in physical layer security, with an emphasis on transmit beamforming designs for multiple-antenna nodes. Specifically, we provide a detailed investigation on multiple-antenna techniques for guaranteeing secure communications in point-to-point systems, dual-hop relaying systems, multiuser systems, and heterogeneous networks. Finally, future research directions and challenges are identified.

Original languageEnglish
Article number7762075
Pages (from-to)1027-1053
Number of pages27
JournalIEEE Communications Surveys and Tutorials
Issue number2
Publication statusPublished - 2017 Apr 1

All Science Journal Classification (ASJC) codes

  • Electrical and Electronic Engineering


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