TY - GEN
T1 - Relay beamforming strategies for physical-layer security
AU - Zhang, Junwei
AU - Gursoy, Mustafa Cenk
PY - 2010
Y1 - 2010
N2 - In this paper, collaborative use of relays to form a beamforming system and provide physical-layer security is investigated. In particular, amplify-and-forward (AF) relay beamforming designs under total and individual relay power constraints are studied with the goal of maximizing the secrecy rates when perfect channel state information (CSI) is available. In the AF scheme, not having analytical solutions for the optimal beamforming design under both total and individual power constraints, an iterative algorithm is proposed to numerically obtain the optimal beamforming structure and maximize the secrecy rates. Robust beamforming designs in the presence of imperfect CSI are investigated for decode-and-forward (DF) based relay beamforming, and optimization frameworks are provided.
AB - In this paper, collaborative use of relays to form a beamforming system and provide physical-layer security is investigated. In particular, amplify-and-forward (AF) relay beamforming designs under total and individual relay power constraints are studied with the goal of maximizing the secrecy rates when perfect channel state information (CSI) is available. In the AF scheme, not having analytical solutions for the optimal beamforming design under both total and individual power constraints, an iterative algorithm is proposed to numerically obtain the optimal beamforming structure and maximize the secrecy rates. Robust beamforming designs in the presence of imperfect CSI are investigated for decode-and-forward (DF) based relay beamforming, and optimization frameworks are provided.
KW - Amplify-and-forward relaying
KW - Decode-and-forward relaying
KW - Physical-layer security
KW - Relay beamforming
KW - Robust beamforming
UR - http://www.scopus.com/inward/record.url?scp=77953707901&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=77953707901&partnerID=8YFLogxK
U2 - 10.1109/CISS.2010.5464970
DO - 10.1109/CISS.2010.5464970
M3 - Conference contribution
AN - SCOPUS:77953707901
SN - 9781424474172
T3 - 2010 44th Annual Conference on Information Sciences and Systems, CISS 2010
BT - 2010 44th Annual Conference on Information Sciences and Systems, CISS 2010
T2 - 44th Annual Conference on Information Sciences and Systems, CISS 2010
Y2 - 17 March 2010 through 19 March 2010
ER -