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ZTE Communications ›› 2013, Vol. 11 ›› Issue (3): 11-19.DOI: DOI:10.3969/j.issn.1673-5188.2013.03.002

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Wireless Physical Layer Security with Imperfect Channel State Information: A Survey

Biao He, Xiangyun Zhou, and Thushara D. Abhayapala   

  1. Research School of Engineering, the Australian National University, Australia
  • Received:2013-05-28 Online:2013-09-25 Published:2013-09-25
  • About author:Biao He (biao.he@anu.edu.au) received the B.E. (hons.) degree in electronic and communication systems from the Australian National University (ANU) in 2012. At the same year, he received the B.E. degree in information engineering from Beijing Institute of Technology (BIT). Currently, he is pursuing his Ph.D. degree in the research school of engineering in ANU. His research interests include physical layer security, wireless communications, and information theory.

    Xiangyun Zhou (xiangyun.zhou@anu.edu.au) is a Lecturer at the Australian National University (ANU), Australia. He received the B.E. (hons.) degree in electronics and telecommunications engineering and the Ph.D. degree in telecommunications engineering from the ANU in 2007 and 2010, respectively. From June 2010 to June 2011, he worked as a postdoctoral fellow at UNIK - University Graduate Center, University of Oslo, Norway. His research interests are in the fields of communication theory and wireless networks. He has a large number of publications in the specific area of physical layer security, including an edited book entitled Physical Layer Security in Wireless Networks published by CRC Press in 2013. Dr. Zhou serves on the editorial board of the following journals:IEEE Communications Letters ,Security and Communication Networks (Wiley), and Ad Hoc & Sensor Wireless Networks . He has also served as the TPC member of major IEEE conferences. Currently, he is the Chair of the ACT Chapter of the IEEE Communications Society and Signal Processing Society. He is a recipient of the Best Paper Award at the 2011 IEEE International Conference on Communications.

    Thushara D. Abhayapala (thushara.abhayapala@anu.edu.au) received the B.E. degree (hons.) in Engineering in 1994 and the Ph.D. degree in Telecommunications Engineering in 1999, both from the Australian National University (ANU), Canberra. He is a Professor and the Director of the Research School of Engineering at ANU. He was the Leader of the Wireless Signal Processing (WSP) Program at the National ICT Australia (NICTA) from November 2005 to June 2007. His research interests are in the areas of spatial audio and acoustic signal processing, space-time signal processing for wireless communication systems, and array signal processing. He has supervised over 30 research students and coauthored over 190 peer reviewed papers. He is an Associate Editor of IEEE/ACM Transactions on Audio, Speech, and Language Processing and the EURASIP Journal on Wireless Communications and Networking . He is also a Member of the Audio and Acoustic Signal Processing Technical Committee (2011-2013) of the IEEE Signal Processing Society.

Wireless Physical Layer Security with Imperfect Channel State Information: A Survey

Biao He, Xiangyun Zhou, and Thushara D. Abhayapala   

  1. Research School of Engineering, the Australian National University, Australia
  • 作者简介:Biao He (biao.he@anu.edu.au) received the B.E. (hons.) degree in electronic and communication systems from the Australian National University (ANU) in 2012. At the same year, he received the B.E. degree in information engineering from Beijing Institute of Technology (BIT). Currently, he is pursuing his Ph.D. degree in the research school of engineering in ANU. His research interests include physical layer security, wireless communications, and information theory.

    Xiangyun Zhou (xiangyun.zhou@anu.edu.au) is a Lecturer at the Australian National University (ANU), Australia. He received the B.E. (hons.) degree in electronics and telecommunications engineering and the Ph.D. degree in telecommunications engineering from the ANU in 2007 and 2010, respectively. From June 2010 to June 2011, he worked as a postdoctoral fellow at UNIK - University Graduate Center, University of Oslo, Norway. His research interests are in the fields of communication theory and wireless networks. He has a large number of publications in the specific area of physical layer security, including an edited book entitled Physical Layer Security in Wireless Networks published by CRC Press in 2013. Dr. Zhou serves on the editorial board of the following journals:IEEE Communications Letters ,Security and Communication Networks (Wiley), and Ad Hoc & Sensor Wireless Networks . He has also served as the TPC member of major IEEE conferences. Currently, he is the Chair of the ACT Chapter of the IEEE Communications Society and Signal Processing Society. He is a recipient of the Best Paper Award at the 2011 IEEE International Conference on Communications.

    Thushara D. Abhayapala (thushara.abhayapala@anu.edu.au) received the B.E. degree (hons.) in Engineering in 1994 and the Ph.D. degree in Telecommunications Engineering in 1999, both from the Australian National University (ANU), Canberra. He is a Professor and the Director of the Research School of Engineering at ANU. He was the Leader of the Wireless Signal Processing (WSP) Program at the National ICT Australia (NICTA) from November 2005 to June 2007. His research interests are in the areas of spatial audio and acoustic signal processing, space-time signal processing for wireless communication systems, and array signal processing. He has supervised over 30 research students and coauthored over 190 peer reviewed papers. He is an Associate Editor of IEEE/ACM Transactions on Audio, Speech, and Language Processing and the EURASIP Journal on Wireless Communications and Networking . He is also a Member of the Audio and Acoustic Signal Processing Technical Committee (2011-2013) of the IEEE Signal Processing Society.

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Abstract: Physical layer security is an emerging technique for improving wireless communication security, which is widely regarded as a complement to cryptographic technologies. To design physical layer security techniques for practical scenarios, uncertainty and imperfections in the channel knowledge need to be taken into account. This paper is a survey of recent research on physical layer security that considers imperfect channel state information (CSI) at communication nodes. We first give an overview of the main information-theoretic measures of secrecy performance with imperfect CSI. Then, we describe several signal processing enhancements in secure transmission designs. These enhancements include secure on-off transmission, beamforming with artificial noise, and secure communication assisted by relay nodes or in cognitive radio systems. Recent studies of physical layer security in large-scale decentralized wireless networks are also summarized. Finally, open problems for on-going and future research are discussed.

Key words: physical layer security, fading channels, channel uncertainty, imperfect channel state information

摘要： Physical layer security is an emerging technique for improving wireless communication security, which is widely regarded as a complement to cryptographic technologies. To design physical layer security techniques for practical scenarios, uncertainty and imperfections in the channel knowledge need to be taken into account. This paper is a survey of recent research on physical layer security that considers imperfect channel state information (CSI) at communication nodes. We first give an overview of the main information-theoretic measures of secrecy performance with imperfect CSI. Then, we describe several signal processing enhancements in secure transmission designs. These enhancements include secure on-off transmission, beamforming with artificial noise, and secure communication assisted by relay nodes or in cognitive radio systems. Recent studies of physical layer security in large-scale decentralized wireless networks are also summarized. Finally, open problems for on-going and future research are discussed.

关键词: physical layer security, fading channels, channel uncertainty, imperfect channel state information