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Computer Science > Information Theory

arXiv:2208.14268 (cs)
[Submitted on 30 Aug 2022]

Title:Optimal Power Allocation for Integrated Visible Light Positioning and Communication System with a Single LED-Lamp

Authors:Shuai Ma, Ruixin Yang, Bing Li, Yongyan Chen, Hang Li, Youlong Wu, Majid Safari, Shiyin Li, Naofal Al-Dhahir
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Abstract:In this paper, we investigate an integrated visible light positioning and communication (VLPC) system with a single LED-lamp. First, by leveraging the fact that the VLC channel model is a function of the receiver's location, we propose a system model that estimates the channel state information (CSI) based on the positioning information without transmitting pilot sequences. Second, we derive the Cramer-Rao lower bound (CRLB) on the positioning error variance and a lower bound on the achievable rate with on-off keying modulation. Third, based on the derived performance metrics, we optimize the power allocation to minimize the CRLB, while satisfying the rate outage probability constraint. To tackle this non-convex optimization problem, we apply the worst-case distribution of the Conditional Value-at-Risk (CVaR) and the block coordinate descent (BCD) methods to obtain the feasible solutions. Finally, the effects of critical system parameters, such as outage probability, rate threshold, total power threshold, are revealed by numerical results.
Comments: 13 pages, 14 figures, accepted by IEEE Transactions on Communications
Subjects: Information Theory (cs.IT); Signal Processing (eess.SP)
Cite as: arXiv:2208.14268 [cs.IT]
  (or arXiv:2208.14268v1 [cs.IT] for this version)
  https://doi.org/10.48550/arXiv.2208.14268
Related DOI: https://doi.org/10.1109/TCOMM.2022.3204659

Submission history

From: Shuai Ma [view email]
[v1] Tue, 30 Aug 2022 13:43:27 UTC (4,156 KB)
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