Secure Beamforming in Downlink MISO Nonorthogonal Multiple Access Systems
作者： Yiqing Li , Miao Jiang , Qi Zhang , Quanzhong Li , Jiayin Qin
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摘要: In this paper, we consider a cellular downlink multiple-input-single-output (MISO) nonorthogonal multiple access (NOMA) secure transmission system, where users are grouped as multiple clusters. Each cluster consists of a central user and a cell-edge user. The central user is an entrusted user, and the cell-edge user is a potential eavesdropper. We focus on the secure beamforming and power allocation design optimization problem which maximizes the sum achievable secrecy rate of central users subject to the transmit …
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