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Title: Virtual multi-antenna array for estimating the direction of a transmitter : system, bounds, and experimental results
Authors: Quitin, Francois
De Doncker, Philippe
Horlin, Francois
Tay, Wee Peng
Keywords: Direction of Arrival
Virtual Antenna Array
DRNTU::Engineering::Electrical and electronic engineering
Issue Date: 2018
Source: Quitin, F., De Doncker, P., Horlin, F., & Tay, W. P. (2018). Virtual multi-antenna array for estimating the direction of a transmitter : system, bounds, and experimental results. IEEE Transactions on Vehicular Technology, 67(2), 1510-1520. doi:10.1109/TVT.2017.2762728
Series/Report no.: IEEE Transactions on Vehicular Technology
Abstract: A method is proposed to estimate the direction of a radio-frequency transmitter with a mobile single-antenna receiver. By considering the received signal at several points along its trajectory, the receiver implicitly creates a virtual multiantenna array, which can be used to estimate the direction of the transmitter. Virtual arrays differ from conventional multiantenna arrays in two ways: 1) the position and orientation of each antenna in the virtual array depend on the movement of the receiver and are not known a priori; and 2) the local oscillator (LO) frequency offset between the transmitter and the receiver adds a phase offset to the signal received by each antenna of the virtual array, which must be estimated and compensated. The first problem is solved by using an inertial measurement unit, which can provide the relative position of the receiver for short time durations. The second problem is solved by estimating the LO frequency offset jointly with the direction of the transmitter by extending the MUSIC algorithm for multidimensional estimation. We investigate the Cramér-Rao lower bound of the proposed estimator, which provides some insights in the design of our system. We implement our system on a software-defined radio testbed and present some measurement results obtained in a controlled environment.
ISSN: 0018-9545
DOI: 10.1109/TVT.2017.2762728
Schools: School of Electrical and Electronic Engineering 
Rights: © 2017 IEEE. Personal use of this material is permitted. Permission from IEEE must be obtained for all other uses, in any current or future media, including reprinting/republishing this material for advertising or promotional purposes, creating new collective works, for resale or redistribution to servers or lists, or reuse of any copyrighted component of this work in other works. The published version is available at:
Fulltext Permission: open
Fulltext Availability: With Fulltext
Appears in Collections:EEE Journal Articles

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