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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...
We present in this paper a new device-to-device (D2D) communication scheme to create a QoS enhanced multimedia services for LTE users who are physically close to each other. This scheme has a potential to provide higher bandwidth service with reduced delay and reduced power consumption. However, a significant challenge from such D2D opportunity is to establish the direct link between nearby devices...
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