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- W2997127582 abstract "In this paper, an anti-eavesdropping strategy is proposed for secure precoding-aided spatial modulation networks, under the assumption that the rough channel state information of eavesdropper can be obtained at the transmitter. Traditionally, artificial noise (AN) can be always projected into the null-space of the legitimate channel, however it may lead to some security loss since this strategy dispenses with a holistic consideration for secure transmissions. To reduce the computational complexity of our optimization problem, we derive a closed-form expression that is a loose bound of the approximate rate over the illegitimate channel. Then a concave maximization problem is formulated for optimizing the covariance matrix of AN. Simulation results show that our proposed low-complexity scheme performs closely to the method which directly maximizes the approximate secrecy rate expression, and harvests significant secrecy rate gains compared with the traditional null-space projection benchmark." @default.
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- W2997127582 date "2020-02-01" @default.
- W2997127582 modified "2023-09-24" @default.
- W2997127582 title "An Anti-Eavesdropping Strategy for Precoding-Aided Spatial Modulation With Rough CSI of Eve" @default.
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- W2997127582 doi "https://doi.org/10.1109/tvt.2019.2962794" @default.
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