Artificial Noise Assisted Communication in the Multiuser Downlink: Optimal Power Allocation

Abstract

We consider the problem of secure communication in the multiuser downlink with an external eavesdropper. The transmitter simultaneously transmits concurrent information signals to the users and an artificial noise (AN) to the eavesdropper. We derive a closed-form expression for the secrecy sum-rate in the large system limit and use it as the objective… (More)
DOI: 10.1109/LCOMM.2014.2385779

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Cite this paper

@article{Li2015ArtificialNA, title={Artificial Noise Assisted Communication in the Multiuser Downlink: Optimal Power Allocation}, author={Na Li and Xiaofeng Tao and Jin Xu}, journal={IEEE Communications Letters}, year={2015}, volume={19}, pages={295-298} }