Abstract
Device-to-device (D2D) communication has been deemed as a promising technology in the next generation 5G wireless communication. Due to the openness nature of the transmission medium, secure transmission is also a critical issue in the D2D-enabled cellular network as well as other wireless systems. In this paper, we investigate secure communication for the cellular downlink in this hybrid network. We consider a case in which each base station has no channel state information (CSI) from D2D transmitters which are generally deployed in the cell edge. To guarantee the secure communication of the cellular link, each base station employs the artificial noise assisted transmission strategy. Firstly, we derive the close-form expression and asymptotic expression of the secrecy outage probability of the cellular link in different scenarios: (I) eavesdroppers having no multi-user decedability; (II) eavesdroppers having the multi-user decedability. Then, we comprehensively discuss the impacts of some main system parameters on the performance to provide some system design guidances. To characterize the reliable communication of the typical D2D link, the close-form expression and asymptotic expression of the connection outage probability are, respectively, derived and some comprehensive analysis are presented. Finally, simulation results are provided to validate the effectiveness of theoretical analysis.
Highlights
To meet the explosive demand of proximity services, device-to-device (D2D) communication has been regarded as an ideal candidate technology for the generation 5G wireless communication
D2D communication allows proximity user equipments to deliver their own messages over the direct link established between them without the base station relaying messages, which has the promise of many types of advantages: superior spectrum efficiency, increasing quality of service (QoS) of edge users and network capacity
Due to the openness nature of the transmission medium, secure transmission is identified as a critical challenge facing the D2D-enabled cellular network as well
Summary
To meet the explosive demand of proximity services, device-to-device (D2D) communication has been regarded as an ideal candidate technology for the generation 5G wireless communication. The authors in [18, 19] have expended the artificial noise-assisted scheme to the MISO D2D-enabled cellular network More they designed the corresponding artificial noise-assisted beamforming vector matrix under the assumption that the channel state information (CSI) from each D2D transmitter is perfectly known at each base station. They designed the corresponding artificial noise-assisted beamforming vector matrix under the assumption that the channel state information (CSI) from each D2D transmitter is perfectly known at each base station They only considered one cellular user and one D2D pair within a cell, which only focused on the point-to-point link and ignored the interference from other neighbor cells [18, 19]. The small-scale fading imposes the independent quasi-static Rayleigh fading model, whose coefficient is constant for each transmission block
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