TY - GEN
T1 - A unified mathematical model for spatial scrambling based secure wireless transmission and its wiretap method
AU - Wu, Feilong
AU - Wang, Wenjie
AU - Wang, Hui Ming
AU - Yin, Qinye
PY - 2011
Y1 - 2011
N2 - The spatial scrambling based secure wireless transmission methods, such as artificial noise and antenna array weighted randomly, can secure wireless transmission at the physical layer. They have a common physical essence, that is, the private message is transmitted in the desired direction while deliberate interference is transmitted in other orthogonal directions. Unfortunately, the interference is not white in spatial domain due to the limitation of the transmit antenna number. A eavesdropper can eliminate the directional interferences by the aid of multiple antennas. In this paper, a unified mathematical model for the above physical-layer methods is established, based on which, a MUSIC-like wiretap algorithm is proposed by exploiting the finite alphabet property of communication symbols. Simulation results show that if the eavesdropper has more antennas than that of the transmitter, the proposed algorithm can intercept information effectively.
AB - The spatial scrambling based secure wireless transmission methods, such as artificial noise and antenna array weighted randomly, can secure wireless transmission at the physical layer. They have a common physical essence, that is, the private message is transmitted in the desired direction while deliberate interference is transmitted in other orthogonal directions. Unfortunately, the interference is not white in spatial domain due to the limitation of the transmit antenna number. A eavesdropper can eliminate the directional interferences by the aid of multiple antennas. In this paper, a unified mathematical model for the above physical-layer methods is established, based on which, a MUSIC-like wiretap algorithm is proposed by exploiting the finite alphabet property of communication symbols. Simulation results show that if the eavesdropper has more antennas than that of the transmitter, the proposed algorithm can intercept information effectively.
KW - antenna array weighted randomly
KW - artificial noise
KW - communication symbols blind estimation
KW - physical-layer security
UR - https://www.scopus.com/pages/publications/84555178411
U2 - 10.1109/WCSP.2011.6096860
DO - 10.1109/WCSP.2011.6096860
M3 - 会议稿件
AN - SCOPUS:84555178411
SN - 9781457710100
T3 - 2011 International Conference on Wireless Communications and Signal Processing, WCSP 2011
BT - 2011 International Conference on Wireless Communications and Signal Processing, WCSP 2011
T2 - 2011 International Conference on Wireless Communications and Signal Processing, WCSP 2011
Y2 - 9 November 2011 through 11 November 2011
ER -