Resource allocation exploiting reflective surfaces to minimize the outage probability in VLC
arxiv(2024)
摘要
Visible light communication (VLC) is a technology that complements radio
frequency (RF) to fulfill the ever-increasing demand for wireless data traffic.
The ubiquity of light-emitting diodes (LEDs), exploited as transmitters,
increases the VLC market penetration and positions it as one of the most
promising technologies to alleviate the spectrum scarcity of RF. However, VLC
deployment is hindered by blockage causing connectivity outages in the presence
of obstacles. Recently, optical reconfigurable intelligent surfaces (ORISs)
have been considered to mitigate this problem. While prior works exploit ORISs
for data or secrecy rate maximization, this paper studies the optimal placement
of mirrors and ORISs, and the LED power allocation, for jointly minimizing the
outage probability while keeping the lighting standards. We describe an optimal
outage minimization framework and present solvable heuristics. We provide
extensive numerical results and show that the use of ORISs may reduce the
outage probability by up to 67
provide a gain of hundreds of kbit/J in optical energy efficiency with respect
to the presented benchmark.
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