Abstract
This letter investigates the secrecy performance in visible light communication (VLC) in the presence of randomly located colluding eavesdroppers (EDs). Colluding EDs can combine their observations and degrade the secrecy performance of the VLC systems. Utilizing the numerical inversion of a characteristic function, the probability distribution of the combined signal-to-noise ratio of colluding EDs is analyzed. The closed-form expression of the secrecy outage probability is derived and verified by Monte Carlo simulations.
Highlights
D user equipment (UE) to the rapid proliferation of mobile communication devices and the associated difficulties in adequately allocating spectra to support new services, visible light communication (VLC) has become an increasingly interesting topic of research in academia and industry
Inspired by the aforementioned contributions exploiting stochastic geometry in RF communications, our previous work [16] firstly developed an analogous approach to modeling ED locations in VLC systems
We propose a multiple-input single-output (MISO) beamforming solution that optimizes secrecy performance measures (e.g., the signal-to-noise ratio (SNR) and secrecy rate bounds) subject to a signal amplitude constraint for VLC systems when only information about the ED intensity measure is available at the transmitter;
Summary
D UE to the rapid proliferation of mobile communication devices and the associated difficulties in adequately allocating spectra to support new services, visible light communication (VLC) has become an increasingly interesting topic of research in academia and industry. The impact of random ED locations on secrecy performance for RF communications has been investigated in recent years [7]–[10]. Motivated by the advantage of PLS, a recent topic of interest in the research community has been the investigation of PLS applied in VLC systems using various transmission methods, e.g., beamforming, jamming, etc. Inspired by the aforementioned contributions exploiting stochastic geometry in RF communications, our previous work [16] firstly developed an analogous approach to modeling ED locations in VLC systems. We propose a MISO beamforming solution that optimizes secrecy performance measures (e.g., the signal-to-noise ratio (SNR) and secrecy rate bounds) subject to a signal amplitude constraint for VLC systems when only information about the ED intensity measure is available at the transmitter;.
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