随机位置窃听场景下SWIPT系统的物理层安全性能

doi:10.11959/j.issn.1000-0801.2020147

Abstract

Abstract:

The locations of the eavesdroppers have serious impact on the physical layer security performance of simultaneous wireless information and power transfer (SWIPT) systems with transmit antenna selection (TAS) and power split (PS) strategy,which can be considered to be modeled as Poisson point process (PPP).The closed-form expressions for secrecy outage probability (SOP) of SWIPT system with TAS and PS strategy under non-colluding and colluding eavesdropping scenarios were derived by using probability generation function of PPP,respectively.Numerical and simulation results show that,the larger the number of transmit antennas,the smaller the distance between the transmitter and the information receiver,and the smaller the PS factor,the smaller SOP of SWIPT system under non-colluding and colluding eavesdropping scenarios.Colluding eavesdropping will further deteriorate the physical layer security performance of SWIPT systems.

Key words: physical layer security, simultaneous wireless information and power transfer, Poisson point process,power split, transmit antenna selection, secrecy outage probability

CLC Number:

TN918.1

Hui QIAN,Guangqiu LI,Yifan DING. Physical layer security performance of SWIPT system in the presence of randomly located eavesdroppers[J]. Telecommunications Science, 2020, 36(5): 65-72.

Figures/Tables 6

参数名称	参数值
噪声方差N0′	1
发射端输出信噪比 $\bar{γ} / d B$	30
路径损耗指数α	4
ER分布半径R/m	50
功率分割因子β	0.5
目标安全速率R_S/( bit.(s.Hz)^-1)	1
Alice与IR之间的距离d_I/m	10

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