On the Performance Gain of Harnessing Non-Line-Of-Sight Propagation for Visible Light-Based Positioning

Zhou, Bingpeng and Zhuang, Yuan and Cao, Yue (2020) On the Performance Gain of Harnessing Non-Line-Of-Sight Propagation for Visible Light-Based Positioning. IEEE Transactions on Wireless Communications, 19 (7). 4863 - 4878. ISSN 1536-1276

[thumbnail of The_effect_of_NLOS_on_VLP_R1_V1-single]
Text (The_effect_of_NLOS_on_VLP_R1_V1-single)
The_effect_of_NLOS_on_VLP_R1_V1_single.pdf - Accepted Version
Available under License Creative Commons Attribution-NonCommercial.

Download (4MB)

Abstract

In practice, visible light signals undergo non-line-of-sight (NLOS) propagation, and in visible light-based positioning (VLP) methods, the NLOS links are usually treated as disturbance sources to simplify the associated signal processing. However, the impact of NLOS propagation on VLP performance is not fully understood. In this paper, we aim to reveal the performance limits of VLP systems in an NLOS propagation environment via Fisher information analysis. Firstly, the closed-form Cramer-Rao lower bound (CRLB) on the estimation error of user detector (UD) location and orientation is established to shed light on the NLOS-based VLP performance limits. Secondly, the information contribution from the NLOS channel is quantified to gain insights into the effect of the NLOS propagation on the VLP performance. It is shown that VLP can gain additional UD location information from the NLOS channel via leveraging the NLOS propagation knowledge. In other words, the NLOS channel can be exploited to improve VLP performance in addition to the line-of-sight (LOS) channel. The obtained closed-form VLP performance limits can not only provide theoretical foundations for the VLP algorithm design under NLOS propagation, but also provide a performance benchmark for various VLP algorithms.

Item Type:
Journal Article
Journal or Publication Title:
IEEE Transactions on Wireless Communications
Additional Information:
©2020 IEEE. Personal use of this material is permitted. However, permission to reprint/republish this material for advertising or promotional purposes or for creating new collective works for resale or redistribution to servers or lists, or to reuse any copyrighted component of this work in other works must be obtained from the IEEE.
Uncontrolled Keywords:
/dk/atira/pure/subjectarea/asjc/2200/2208
Subjects:
?? APPLIED MATHEMATICSCOMPUTER SCIENCE APPLICATIONSELECTRICAL AND ELECTRONIC ENGINEERING ??
ID Code:
142884
Deposited By:
Deposited On:
01 Apr 2020 08:40
Refereed?:
Yes
Published?:
Published
Last Modified:
17 Sep 2023 02:48