Cooperative Secure Beamforming for AF Relay Networks With Multiple Eavesdroppers
Publication in refereed journal


引用次數
替代計量分析
.

其它資訊
摘要This letter studies cooperative secure beamforming for amplify-and-forward (AF) relay networks in the presence of multiple eavesdroppers. Under both total and individual relay power constraints, we propose two schemes, namely secrecy rate maximization (SRM) beamforming and null-space beamforming. In the first scheme, our design problem is based on SRM. Using a suboptimal, but convex, technique-semidefinite relaxation (SDR), we show that this problem can be handled by performing a one-dimensional search which involves solving a sequence of semidefinite programs (SDPs). To reduce the complexity, in the second scheme, we instead maximize the information rate at the destination while completely eliminating the information leakage to all eavesdroppers. We prove that this problem can be exactly solved by SDR with one SDP only. Simulation results demonstrate the performance gains of the two proposed designs.
著者Yang Y, Li Q, Ma WK, Ge JH, Ching PC
期刊名稱IEEE Signal Processing Letters
出版年份2013
月份1
日期1
卷號20
期次1
出版社Institute of Electrical and Electronics Engineers (IEEE)
頁次35 - 38
國際標準期刊號1070-9908
電子國際標準期刊號1558-2361
語言英式英語
關鍵詞Amplify-and-forward relaying; cooperative beamforming; physical-layer security; semidefinite relaxation
Web of Science 學科類別Engineering; Engineering, Electrical & Electronic; ENGINEERING, ELECTRICAL & ELECTRONIC

上次更新時間 2020-19-10 於 23:06