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Physical layer security, aiming at preventing the confidential information from eavesdroppers, has drawn significant attentions in recent years. In this paper, we address the problem of securing downlink single-user and multiuser transmissions in code division multiple-access systems. Particularly, we propose a novel binary signature design method to minimize the reception of the confidential messages...
Due to the open access nature of wireless communication environment, physical layer security has brought increasingly high attention in recent years, attempting to protect the confidential communication away from eavesdroppers. In contrast to the current secrecy designs, which generally exploit the spatial Degree-of-Freedom (DoF) (e.g. MIMO and cooperative relay approaches) or the temporal DoF (e...
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