TY - GEN
T1 - A novel beamforming to improve secrecy rate in a DAJ based untrusted relay network
AU - Mekkawy, Tamer
AU - Yao, Rugui
AU - Xu, Fei
AU - Lu, Yanan
AU - Wang, Ling
N1 - Publisher Copyright:
© 2017 IEEE.
PY - 2017/12/7
Y1 - 2017/12/7
N2 - Security is a demanding request for wireless networks, with physical layer security the problems in traditional encryption algorithms and key management are vanished. In this paper, a novel beamforming scheme is proposed to improve secrecy rate in an untrusted relay network, where the untrusted relay helps to improve the network coverage area but may act as a potential eavesdroper. A destination-assisted-jamming (DAJ) is used to protect the confidential information against untrusted relays and eavesdroppers. By optimizing beamforming, we align the confidential signal to the equivalent valid signal space and force it to be orthogonal to the cooperative jamming signal space. The correctness and efficiency of the proposed beamforming scheme are validated by numerical simulations.
AB - Security is a demanding request for wireless networks, with physical layer security the problems in traditional encryption algorithms and key management are vanished. In this paper, a novel beamforming scheme is proposed to improve secrecy rate in an untrusted relay network, where the untrusted relay helps to improve the network coverage area but may act as a potential eavesdroper. A destination-assisted-jamming (DAJ) is used to protect the confidential information against untrusted relays and eavesdroppers. By optimizing beamforming, we align the confidential signal to the equivalent valid signal space and force it to be orthogonal to the cooperative jamming signal space. The correctness and efficiency of the proposed beamforming scheme are validated by numerical simulations.
KW - Beamforming
KW - cooperative jamming
KW - destination-assisted-jamming (DAJ)
KW - generalized singular value decomposition (GSVD)
KW - untrusted relay network
UR - http://www.scopus.com/inward/record.url?scp=85046491124&partnerID=8YFLogxK
U2 - 10.1109/WCSP.2017.8171052
DO - 10.1109/WCSP.2017.8171052
M3 - 会议稿件
AN - SCOPUS:85046491124
T3 - 2017 9th International Conference on Wireless Communications and Signal Processing, WCSP 2017 - Proceedings
SP - 1
EP - 5
BT - 2017 9th International Conference on Wireless Communications and Signal Processing, WCSP 2017 - Proceedings
PB - Institute of Electrical and Electronics Engineers Inc.
T2 - 9th International Conference on Wireless Communications and Signal Processing, WCSP 2017
Y2 - 11 October 2017 through 13 October 2017
ER -