Secrecy Capacity Based On Suboptimal Multi-Antennas Selection and Power Allocation
We propose a suboptimal multi-antennas selection (SMAS) scheme to enhance physical layer (PHY) security,due to the limitations of multi-input multi-output (MIMO) transmit antenna selection scheme in PHY security technologies.We consider that the channel state information (CSI) of wiretap channel is un known to the transmitter,and select multi-antennas exploiting the suboptimal multi-antennas selection scheme.Next,we use water-pouring algorithm to assign the transmit power of each selected antenna at the transmitter and derive the expression of secrecy capacity.We prove the validity of the proposed scheme through simulating the received bit-error-ratio (BER) of the receiver and the eavesdropper,respectively.In contrast to the suboptimal antenna selection scheme which selects only one antenna at the transmitter,the proposed SMAS scheme selects multiple antennas and increases the secrecy capacity of the MIMO system numerically.
secrecy capacity antenna selection phsical layer security maximal-ratio combining power allocation
Lingqing Zeng Xiaoxia Cai Hong Chen Wenli Zhu
Inst.of Electronic Engineering Hefei,P.R.China
国际会议
重庆
英文
83-86
2016-03-20（万方平台首次上网日期，不代表论文的发表时间）