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.
源语言 | 英语 |
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页(从-至) | 929-937 |
页数 | 9 |
期刊 | Frontiers of Information Technology and Electronic Engineering |
卷 | 17 |
期 | 9 |
DOI | |
出版状态 | 已出版 - 1 9月 2016 |
已对外发布 | 是 |