naa a22 4500 510791360 CHVBK 20180411083321.0 cr unu---uuuuu 180411e20130701xx s 000 0 eng 10.1007/s11277-012-0798-9 doi (NATIONALLICENCE)springer-10.1007/s11277-012-0798-9 SLNR-Based Transmit Beamforming for MIMO Wiretap Channel [Elektronische Daten] [Kun Wang, Xiyuan Wang, Xianda Zhang] In this paper, a novel closed-form transmit beamforming scheme is proposed for multiple-input multiple-output (MIMO) wiretap channel. The proposed method follows the idea of maximizing signal-to-leakage-plus-noise ratio and does not need additional power allocation. An efficient approach is further developed to implement the generalized eigenvalue decomposition required by our method when n r <n t (n t , n r and n e denote the antenna numbers at the transmitter, the intended receiver and the eavesdropper, respectively), which has lower complexity than the existing approaches. Moreover, we identify some shortcomings of the generalized singular value decomposition (GSVD) based beamforming method, a common beamforming scheme for MIMO wiretap channel. Finally, simulation results show that the proposed method significantly outperforms GSVD-based method when n e < n t and has almost the same performance as GSVD-based method when n e ≥ n t . Springer Science+Business Media, LLC., 2012 Multiple-input multiple-output nationallicence Wiretap channel nationallicence Transmit beamforming nationallicence Signal-to-leakage-plus-noise ratio nationallicence Wang Kun Tsinghua National Laboratory for Information Science and Technology, Department of Automation, Tsinghua University, 100084, Beijing, China aut Wang Xiyuan Tsinghua National Laboratory for Information Science and Technology, Department of Automation, Tsinghua University, 100084, Beijing, China aut Zhang Xianda Tsinghua National Laboratory for Information Science and Technology, Department of Automation, Tsinghua University, 100084, Beijing, China aut Wireless Personal Communications Springer US; http://www.springer-ny.com 71/1(2013-07-01), 109-121 0929-6212 71:1<109 2013 71 11277 https://doi.org/10.1007/s11277-012-0798-9 text/html Onlinezugriff via DOI 1 research-article jats NATIONALLICENCE 856 40 https://doi.org/10.1007/s11277-012-0798-9 text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Wang Kun Tsinghua National Laboratory for Information Science and Technology, Department of Automation, Tsinghua University, 100084, Beijing, China aut NATIONALLICENCE 700 1- Wang Xiyuan Tsinghua National Laboratory for Information Science and Technology, Department of Automation, Tsinghua University, 100084, Beijing, China aut NATIONALLICENCE 700 1- Zhang Xianda Tsinghua National Laboratory for Information Science and Technology, Department of Automation, Tsinghua University, 100084, Beijing, China aut NATIONALLICENCE 773 0- Wireless Personal Communications Springer US; http://www.springer-ny.com 71/1(2013-07-01), 109-121 0929-6212 71:1<109 2013 71 11277 Metadata rights reserved Springer special CC-BY-NC licence nationallicence BK010053 XK010053 XK010000 NATIONALLICENCE NATIONALLICENCE NL-springer