Improve Positioning Accuracy in WCDMA/FDD Networks Utilizing Adaptive Threshold for Direct Component Detection

TL;DR

This paper explores methods to improve mobile positioning accuracy in WCDMA/FDD networks under NLOS conditions by adaptively adjusting detection thresholds for direct component signal detection.

Contribution

It introduces and compares three threshold calculation methods to enhance direct component detection and reduce positioning errors in challenging propagation environments.

Findings

Adaptive thresholding improves direct component detection.

Positioning error decreases with optimized thresholds.

Three methods show varying effectiveness in different scenarios.

Abstract

In NLOS propagation conditions power of direct component can be attenuated significantly. Therefore detection of direct component is aggravated which can degrades accuracy of Time of Arrival mobile positioning. The goal of this paper is to determine possibilities to improve estimation of direct component time delay by reducing detection threshold. Three different methods for calculating threshold has been tested and compared in terms of positioning error.