ARPAP: A Novel Antenna-Radiation-Pattern-Aware Power-Based Positioning in RF System
Traditional power-based localization methods suffer from low accuracy in the practical application environment. The main challenges are the antenna directivity and fading effect. Conventional methods assume omnidirectional antenna directivity such that the solution is the intersections of multiple circle-shape contours. This strong assumption results in significant localization error in practical non-isotropic antenna applications. In this article, a novel antenna radiation-pattern-aware power-based positioning (ARPAP) scheme is proposed. It reduces the antenna directivity effect by including the antenna pattern into the localization system model. It reduces the bias error that introduced by power measurement through estimating the line-of-sight (LoS) component in received signal strength (RSS). Moreover, the error mode for the proposed ARPAP system, along with the theoretical limit, Cramer-Rao Bound (CRB), and bias of the proposed positioning system are derived. The Pearson correlation coefficient between the proposed error model and simulation result shows a high similarity score. The proposed positioning scheme and analytic error model are instantiated for the cellular network. Both analytical model and simulation results demonstrate the superiority of the proposed method over traditional methods.
L. Wang et al., "ARPAP: A Novel Antenna-Radiation-Pattern-Aware Power-Based Positioning in RF System," IEEE Transactions on Mobile Computing, vol. 20, no. 3, pp. 816-829, article no. 8933475, Institute of Electrical and Electronics Engineers (IEEE), Mar 2021.
The definitive version is available at https://doi.org/10.1109/TMC.2019.2959983
Electrical and Computer Engineering
Keywords and Phrases
Antenna Radiation Pattern; Line Of Sight; Positioning; Ranging; Received Signal Strength Indicator
International Standard Serial Number (ISSN)
Article - Journal
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01 Mar 2021