Enhanced Physical Layer Security in D2D Spectrum Sharing Networks

In this letter, the issue of security for device-to-device (D2D) underlaying cellular networks is considered. The cellular communication is overheard by randomly distributed eavesdroppers. By sharing the spectrum between D2D users and cellular users, the interference generated by D2D users is used a...

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Bibliographic Details
Published in:IEEE wireless communications letters 2017-02, Vol.6 (1), p.106-109
Main Authors: Wang, Wei, Teh, Kah Chan, Li, Kwok Hung
Format: Article
Language:English
Subjects:
access control
Copper
D2D communication
Device-to-device communication
Fading channels
Interference
Physical layer security
secrecy throughput
Signal to noise ratio
stochastic geometry
Throughput
Transmitters
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Summary:In this letter, the issue of security for device-to-device (D2D) underlaying cellular networks is considered. The cellular communication is overheard by randomly distributed eavesdroppers. By sharing the spectrum between D2D users and cellular users, the interference generated by D2D users is used as a source of jamming to confuse the eavesdroppers. We first derive the connection probability of the D2D links and the secrecy outage probability of the cellular link based on stochastic geometry tools. We then propose a joint guard zone and threshold-based access control scheme for the D2D users to maximize the achievable secrecy throughput. Moreover, when only the selection threshold is considered, a closed-form expression of the optimal selection threshold is derived. Simulation results show that improved secrecy throughput can be achieved by allowing the transmission of the D2D users.
ISSN:2162-2337
2162-2345
DOI:10.1109/LWC.2016.2634559