Measurement based indoor SIMO RFID simulator for tag positioning

In this research, a single-input multiple-output simulator for passive UHF RFID is developed in MatlabR/SimulinkR. Tag localization is achieved via a phase difference of arrival technique. A channel measurement campaign was conducted in an engine test environment. Scattering parameters were measured at several line-of-sight and non-line-of-sight tag positions. The measured S parameters were used in the simulator to emulate a real indoor multipath channel. The simulator estimates accurate direction of arrival at several tag positions of the measurement campaign. There is a maximum error of 32° and minimum of 0.4° between the geometrically calculated and simulated angles.

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