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| Secrecy Performance of TAS in MIMOME System with Outdated CSI |
| Jianwei Hu, Yueming Cai, Weiwei Yang |
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Abstract We analyze the impact of outdated Channel State Information (CSI) on
the secrecy performance of Multi-input, Multi-output,
Multi-eavesdropper (MIMOME) system over Nakagami-\emph{m} fading
channels, where Transmit Antenna Selection (TAS) is used at the
transmitter and Maximal-ratio Combination (MRC) is used at the
desired receiver and the eavesdropper. In our analysis, new
closed-form expressions for the probability of the existence of
positive secrecy capacity and the secrecy outage probability are
derived. We also derive the asymptotic secrecy outage probability,
in which the secrecy diversity order and the secrecy array gain are
revealed. Furthermore, the $\varepsilon$-outage secrecy capacity is
characterized. Our results demonstrate that due to the outdated CSI,
the secrecy performance suffers from great loss, and the transmit
diversity order is reduced to one, while the receive diversity order
is not affected.
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| DOI:10.12733/jics20104366 |
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