Title: Performance comparison of TOA-based indoor positioning algorithms using ultra-wideband technology in 3D

Authors: B. Venkata Krishnaveni; Katam Suresh Reddy; P. Ramana Reddy

Addresses: Department Electronics and Communication Engineering, CMR Institute of Technology, Hyderabad, Telangana, India ' Department of Electronics and Communication Engineering, G. Pulla Reddy Engineering College (Autonomous), Kurnool, Andhra Pradesh, India; Department of Electronics and Communication Engineering, Jawaharlal Nehru Technological University Anantapur (JNTUA), Anantapuramu, Andhra Pradesh, India ' Department of Electronics and Communication Engineering, G. Pulla Reddy Engineering College (Autonomous), Kurnool, Andhra Pradesh, India; Department of Electronics and Communication Engineering, Jawaharlal Nehru Technological University Anantapur (JNTUA), Anantapuramu, Andhra Pradesh, India

Abstract: Although many indoor technologies with different methodologies and improvements have been proposed, indoor localisation is still a challenging work. Among all existing technologies the most promising one is ultra-wideband (UWB) technology because it is the only one that combines the benefits of accuracy, speed, safety and cost-efficiency. For a noise-free environment, mathematical technique of trilateration is best for position assessment. But in general, all the circles in trilateration method don't intersect at a single point as the number of reference points increases. So in this paper, we present the linear and non-linear algorithms which consider time of arrival (TOA) values for positioning using UWB. First the model for signal measurement and principles of positioning is explained, next the non-linear and linear methods to calculate the target location, such as NLS, ML, LLS and WLLS are given. Performance of algorithms is compared using MSE and CRLB.

Keywords: internet of things; localisation; TOA positioning; UWB.

DOI: 10.1504/IJWMC.2023.134659

International Journal of Wireless and Mobile Computing, 2023 Vol.25 No.3, pp.201 - 208

Received: 13 Apr 2021
Received in revised form: 11 Apr 2022
Accepted: 02 Jul 2022
Published online: 03 Nov 2023 *

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