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Mode Selection Algorithm for Advanced TOA Trilateration Techniques

Authors:
Sajina Pradhan
Suk-seung Hwang

Keywords: time-of-arrival; trilateration; mode selection; three circles intersection

Abstract:
The location detection technology (LDT) with various applications is one of the core techniques for the mobile communication system. The time-of-arrival (TOA) trilateration, which is a representative approach of network-based LDTs, estimates the location of a mobile station (MS) using an intersection point of three circles based on signals from at least three base stations (BS). Since the distance between MS and BS is generally estimated by the number of delay samples and it is an integer number, the radius of circles is usually increased and three circles may not meet at a point, which results in the serious estimation error. In order to overcome this problem, the shortest distance and the line intersection algorithms for the general case and the comparison approach of intersection distances for the specific case have been recently proposed. In this paper, we provide the selection methodology between these two cases for using the line intersection algorithm or the comparison approach of intersection distances, for the MS location estimation. The selection procedure for both cases is based on comparing the radiuses of two large circles to distances between four intersection points of a small circle with others and center coordinates of corresponding large circles.

Pages: 18 to 22

Copyright: Copyright (c) IARIA, 2016

Publication date: February 21, 2016

Published in: conference

ISSN: 2308-4480

ISBN: 978-1-61208-453-4

Location: Lisbon, Portugal

Dates: from February 21, 2016 to February 25, 2016