Abstract:Abstract. The most of existing physical layer security research focus on the situation where decentralized nodes transmit signals to the Base Station(BS). But considering a scenario where nonorthogonal transmission is allowed, when the BS transmits signals to decentralized nodes, the multi-downlinks will interfere each other, decreasing the signal-to-interference-plus-noise ratios (SINRs) at receivers. Focusing on the above problem, this paper optimizes the downlink beamforming and power allocation jointly to … Show more
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