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Optical Integrated Sensing and Communication with Light-Emitting Diode

Runxin Zhang, Yulin Shao, Menghan Li, Lu Lu, Yonina C. Eldar

TL;DR

A new optical integrated sensing and communication framework tailored for cost-effective light-emitting diode (LED) for enhanced Internet of Things (IoT) applications that capitalizes on the inherent advantages of the optical spectrum, including the ultrawide license-free bandwidth, immunity to RF interference, and energy efficiency.

Abstract

This paper presents a new optical integrated sensing and communication (O-ISAC) framework tailored for cost-effective Light-Emitting Diode (LED) for enhanced Internet of Things (IoT) applications. Unlike prior research on ISAC, which predominantly focused on radio frequency (RF) band, O-ISAC capitalizes on the inherent advantages of the optical spectrum, including the ultra-wide license-free bandwidth, immunity to RF interference, and energy efficiency -- attributes crucial for IoT communications. The communication and sensing in our O-ISAC system unfold in two phases: directionless O-ISAC and directional O-ISAC. In the first phase, distributed optical access points emit non-directional light for communication and leverage small-aperture imaging principles for sensing. In the second phase, we put forth the concept of optical beamforming, using collimating lenses to concentrate light, resulting in substantial performance enhancements in both communication and sensing. Numerical and simulation results demonstrate the feasibility and impressive performance of O-ISAC benchmarked against optical separate communication and sensing systems.

Optical Integrated Sensing and Communication with Light-Emitting Diode

TL;DR

A new optical integrated sensing and communication framework tailored for cost-effective light-emitting diode (LED) for enhanced Internet of Things (IoT) applications that capitalizes on the inherent advantages of the optical spectrum, including the ultrawide license-free bandwidth, immunity to RF interference, and energy efficiency.

Abstract

This paper presents a new optical integrated sensing and communication (O-ISAC) framework tailored for cost-effective Light-Emitting Diode (LED) for enhanced Internet of Things (IoT) applications. Unlike prior research on ISAC, which predominantly focused on radio frequency (RF) band, O-ISAC capitalizes on the inherent advantages of the optical spectrum, including the ultra-wide license-free bandwidth, immunity to RF interference, and energy efficiency -- attributes crucial for IoT communications. The communication and sensing in our O-ISAC system unfold in two phases: directionless O-ISAC and directional O-ISAC. In the first phase, distributed optical access points emit non-directional light for communication and leverage small-aperture imaging principles for sensing. In the second phase, we put forth the concept of optical beamforming, using collimating lenses to concentrate light, resulting in substantial performance enhancements in both communication and sensing. Numerical and simulation results demonstrate the feasibility and impressive performance of O-ISAC benchmarked against optical separate communication and sensing systems.
Paper Structure (12 sections, 5 theorems, 54 equations, 15 figures, 2 tables)

This paper contains 12 sections, 5 theorems, 54 equations, 15 figures, 2 tables.

Table of Contents

  1. Introduction
  2. Problem Formulation
  3. Propagation model of light source
  4. Optical communication
  5. Optical sensing
  6. Synergies between Optical Sensing and Optical Communication
  7. Synergies between optical sensing and optical communication and a two-phase operation mechanism
  8. Source layout optimization
  9. Optical beamforming
  10. Numerical and Simulation Results
  11. Conclusion
  12. Proof of Lemma \ref{['thm:2']}

Key Result

Theorem 1

In the first phase of O-ISAC, the optimal source layout that maximizes the proportion of areas exceeding the threshold $\rho_I$, i.e., the optimal solution to (P1), can be approximated by $\bm{p}_{\text{O-AP},m}^* = (\varepsilon^* \cos{\xi_m^*}, \varepsilon^* \sin{\xi_m^*}, \mathcal{H} )$, where

Figures (15)

  • Figure 1: The system model of the proposed O-ISAC framework.
  • Figure 2: Illustrating the propagation model of an LED source.
  • Figure 3: An illustration of the film planes captured by the pinhole cameras of four optical O-APs. Each file plane has a 2D coordinate system.
  • Figure 4: The workflow of the proposed two-phase O-ISAC system.
  • Figure 5: The comparison between the simulated optimal solution and the analytical solution regarding the proportion of area exceeding the threshold.
  • ...and 10 more figures

Theorems & Definitions (5)

  • Theorem 1
  • Lemma 2
  • Theorem 3
  • Lemma 4: Profile of the lens surface
  • Lemma 5: AoD