On the Secrecy Capacity of MISO Visible Light Communication Channels

Type
Conference Paper

Authors
Arfaoui, Mohamed Amine
Rezki, Zouheir
Ghrayeb, Ali
Alouini, Mohamed-Slim

KAUST Department
Computer, Electrical and Mathematical Sciences and Engineering (CEMSE) Division
Electrical Engineering Program

Online Publication Date
2017-02-07

Print Publication Date
2016-12

Date
2017-02-07

Abstract
We study the secrecy capacity of the multiple- input single-output (MISO) Gaussian wiretap visible light communication (VLC) channel. We study a typical VLC scenario with one transmitter, one legitimate receiver, and one eavesdropper. Specifically, we compute the achievable secrecy rate for various input signaling distributions, including the truncated generalized normal (TGN) and uniform distributions. The transmitter is equipped with multiple light sources, while the legitimate and unauthorized receivers are each equipped with a single photodetector. We analyze the achievable secrecy rates via transmit beamforming and artificial noise. In addition, both zero-forcing beamforming and robust beamforming are considered. In the former case, the location of the eavesdropper is assumed to be known, whereas in the latter case, the location of the eavesdropper is unknown. Our numerical results show that the secrecy rate achieved by the TGN distribution is significantly improved as compared to those achieved by the truncated Gaussian and uniform distributions, for both zero-forcing beamforming and robust beamforming. We also derive an upper bound on the achievable secrecy capacity that we used to assess the closeness of the achievable secrecy rates to the derived bound.

Citation
Arfaoui MA, Rezki Z, Ghrayeb A, Alouini MS (2016) On the Secrecy Capacity of MISO Visible Light Communication Channels. 2016 IEEE Global Communications Conference (GLOBECOM). Available: http://dx.doi.org/10.1109/glocom.2016.7842062.

Acknowledgements
This work was supported by Qatar National Research Fund (a member of Qatar Foundation) under NPRP Grant NPRP8-052-2-029. The statements made herein are solely the responsibility of the authors.

Publisher
Institute of Electrical and Electronics Engineers (IEEE)

Journal
2016 IEEE Global Communications Conference (GLOBECOM)

DOI
10.1109/glocom.2016.7842062

Additional Links
http://ieeexplore.ieee.org/document/7842062/

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