6533b823fe1ef96bd127df06

RESEARCH PRODUCT

A New Iterative Procedure for the Localization of a Moving Object/Person in Indoor Areas from Received RF Signals

Matthias PatzoldRym Hicheri

subject

Matching (graph theory)business.industryComputer science05 social sciencesMIMO050801 communication & media studies020206 networking & telecommunications02 engineering and technologyObject (computer science)Communications systemTransfer functionEuclidean distance0508 media and communicationsPosition (vector)0202 electrical engineering electronic engineering information engineeringComputer visionArtificial intelligenceRadio frequencybusiness

description

This paper presents a new iterative estimation method to localize a single moving object or person in non-stationary 3-dimensional (3D) indoor environments from received radiofrequency (RF) signals. The moving object/person is modelled by a moving single point scatterer. The indoor space is equipped with a multiple-input multiple-output (MIMO) communication system. This work starts by introducing a new geometrical channel model which considers the effects of the line-of-sight (LOS) component, the fixed objects located in a room, and the moving object (point scatterer). Then, we present an iterative estimation technique for computing the time-variant (TV) coordinates of the moving scatterer. The proposed approach determines the optimal TV coordinates of the moving scatterer by matching the TV transfer function (TVTF) of the received RF signals to the TVTF of the non-stationary channel model. The proposed procedure relies on numerical optimization techniques to estimate the TV position of the moving scatterer by minimizing the Euclidean norm of the fitting error. A comparison of the estimated TV position of the moving scatterer with the corresponding exact quantities, known from generated RF signals, confirms the validity of the proposed approach.

yearjournalcountryeditionlanguage
2019-10-012019 International Conference on Wireless and Mobile Computing, Networking and Communications (WiMob)
https://doi.org/10.1109/wimob.2019.8923428