Defining Spatial Secrecy Outage Probability for Exposure Region-Based Beamforming

TY - JOUR

T1 - Defining Spatial Secrecy Outage Probability for Exposure Region-Based Beamforming

AU - Zhang, Yuanrui

AU - Ko, Youngwook

AU - Woods, Roger

AU - Marshall, Alan

PY - 2017/2/1

Y1 - 2017/2/1

N2 - With the increasing number of antennae in base stations, there is considerable interest in using beamforming to improve physical layer security, by creating an 'exposure region' that enhances the received signal quality for a legitimate user and reduces the possibility of leaking information to a randomly located passive eavesdropper. This paper formalizes this concept by proposing a novel definition for the security level of such a legitimate transmission, called the spatial secrecy outage probability (SSOP). By performing a theoretical and numerical analysis, it is shown how the antenna array parameters can affect the SSOP and its analytic upper bound. While this approach may be applied to any array type and any fading channel model, it is shown here how the security performance of a uniform linear array varies in a Rician fading channel by examining the analytic SSOP upper bound.

AB - With the increasing number of antennae in base stations, there is considerable interest in using beamforming to improve physical layer security, by creating an 'exposure region' that enhances the received signal quality for a legitimate user and reduces the possibility of leaking information to a randomly located passive eavesdropper. This paper formalizes this concept by proposing a novel definition for the security level of such a legitimate transmission, called the spatial secrecy outage probability (SSOP). By performing a theoretical and numerical analysis, it is shown how the antenna array parameters can affect the SSOP and its analytic upper bound. While this approach may be applied to any array type and any fading channel model, it is shown here how the security performance of a uniform linear array varies in a Rician fading channel by examining the analytic SSOP upper bound.

KW - Beamforming

KW - Exposure region

KW - Physical layer security

KW - Spatial Secrecy outage probability

KW - Uniform linear array

UR - http://www.scopus.com/inward/record.url?scp=85014972073&partnerID=8YFLogxK

U2 - 10.1109/TWC.2016.2633351

DO - 10.1109/TWC.2016.2633351

M3 - Article

AN - SCOPUS:85014972073

SN - 1536-1276

VL - 16

SP - 900

EP - 912

JO - IEEE Transactions on Wireless Communications

JF - IEEE Transactions on Wireless Communications

IS - 2

M1 - 7762226

ER -