Xu, Chao;
Masouros, Christos;
Sugiura, Shinya;
Petropoulos, Periklis;
Maunder, Robert G;
Yang, Lie-Liang;
Haas, Harald;
(2025)
Integrated Positioning and Communication Relying on Wireless Optical OFDM.
IEEE Journal on Selected Areas in Communications
10.1109/JSAC.2025.3543532.
(In press).
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Abstract
Visible Light Positioning and Communication (VLPC) is a promising candidate for implementing Integrated Sensing And Communication (ISAC) in the unlicensed 400 THz to 800 THz band. The current Visible Light Positioning (VLP) systems mainly operate based on the Received Signal Strength (RSS) of the Line-of-Sight (LoS) path. However, its accuracy is degraded by interferences from Non-LoS (NLoS) paths. Furthermore, in Visible Light Communication (VLC) systems, the estimation of Channel State Information (CSI) also becomes challenging, when the optical channel becomes dispersive. Against this background, we propose a new VLPC scheme using Direct Current (DC) biased Optical Orthogonal Frequency-Division Multiplexing (VLPC-DCO-OFDM), where OFDM-based sensing is applied for the sake of improving the resolution of the estimated Channel Impulse Response (CIRs) exploited for positioning functionality. The CIRs estimated by sensing are further exploited to provide enhanced CSI for communication data detection. Moreover, we propose a hybrid Radar-RSS based solution, where the conventional RSS-aided VLP method is invoked for the sake of refining OFDM radar. Our simulation results demonstrate that the proposed VLPC-DCO-OFDM scheme – which simultaneously supports the triple functionalities of illumination, bi-static sensing and communication – is capable of achieving centimeter-level positioning accuracy and Giga-bits-per-second data rate.
| Type: | Article |
|---|---|
| Title: | Integrated Positioning and Communication Relying on Wireless Optical OFDM |
| Open access status: | An open access version is available from UCL Discovery |
| DOI: | 10.1109/JSAC.2025.3543532 |
| Publisher version: | https://doi.org/10.1109/JSAC.2025.3543532 |
| Language: | English |
| Additional information: | This version is the author-accepted manuscript. For information on re-use, please refer to the publisher’s terms and conditions. |
| Keywords: | OFDM, Radar, Optical sensors, Visible light communication, Nonlinear optics, Light emitting diodes, Integrated sensing and communication, Estimation, Bandwidth, Accuracy |
| UCL classification: | UCL UCL > Provost and Vice Provost Offices > UCL BEAMS UCL > Provost and Vice Provost Offices > UCL BEAMS > Faculty of Engineering Science > Dept of Electronic and Electrical Eng |
| URI: | https://discovery.ucl.ac.uk/id/eprint/10205545 |
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