摘要
We investigate the secrecy outage performance of maximal ratio combining(MRC) in cognitive radio networks over Rayleigh fading channels. In a single-input multiple-output wiretap system, we consider a secondary user(SU-TX) that transmits confidential messages to another secondary user(SU-RX) equipped with M(M ≥ 1)antennas where the MRC technique is adopted to improve its received signal-to-noise ratio. Meanwhile, an eavesdropper equipped with N(N ≥ 1) antennas adopts the MRC scheme to overhear the information between SU-TX and SU-RX. SU-TX adopts the underlay strategy to guarantee the service quality of the primary user without spectrum sensing. We derive the closed-form expressions for an exact and asymptotic secrecy outage probability.
We investigate the secrecy outage performance of maximal ratio combining（MRC） in cognitive radio networks over Rayleigh fading channels. In a single-input multiple-output wiretap system, we consider a secondary user（SU-TX） that transmits confidential messages to another secondary user（SU-RX） equipped with M（M ≥ 1）antennas where the MRC technique is adopted to improve its received signal-to-noise ratio. Meanwhile, an eavesdropper equipped with N（N ≥ 1） antennas adopts the MRC scheme to overhear the information between SU-TX and SU-RX. SU-TX adopts the underlay strategy to guarantee the service quality of the primary user without spectrum sensing. We derive the closed-form expressions for an exact and asymptotic secrecy outage probability.
基金
Project supported in part by the National Natural Science Foundation of China(Nos.61401372 and 61531016)
the Research Fund for the Doctoral Program of Higher Education of China(No.20130182120017)
the Natural Science Foundation of CQ CSTC(No.cstc2013jcyj A40040)
the Fundamental Research Funds for the Central Universities,China(No.XDJK2015B023)
