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The application of high-resolution methods for DOA estimation using a linear antenna array

Published online by Cambridge University Press:  07 April 2014

Lotfi Osman ,
Imen Sfar  and
Ali Gharsallah
Lotfi Osman*
Affiliation:
Faculty of Sciences of Tunis, UR “CSEHF”, University of Tunis El Manar, 2092 Tunis, Tunisia. Phone: +216 21105620
Imen Sfar
Affiliation:
Faculty of Sciences of Tunis, UR “CSEHF”, University of Tunis El Manar, 2092 Tunis, Tunisia. Phone: +216 21105620
Ali Gharsallah
Affiliation:
Faculty of Sciences of Tunis, UR “CSEHF”, University of Tunis El Manar, 2092 Tunis, Tunisia. Phone: +216 21105620
*
Corresponding author: L. Osman Email: [email protected]
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Abstract

This paper presents results of direction of arrival (DOA) estimation using multiple signal classification (MUSIC), Root-MUSIC, and estimation of signal parameters via rotational invariance technique algorithms. As is well known, these algorithms are mainly based on the specific properties of the signal covariance matrix as well as the decomposition of the observation space into two subspaces, one for the signal and the other for the noise. Here, we are particularly interested in the quality of sources localization considering only the case of uncorrelated radio frequency signals impinging on an antenna array. A measurement system consisting of a linear array antenna and a five-port network applicable to a demodulator such as a receiver is used for the DOA estimation process. Co-simulations performed with the Advanced Device System and Matlab yielded interesting results not only on their performance but also on their limitation.

Keywords

Wireless systems and signal processingDirection of arrivalActive array antennas and components
Type
Research Papers
Information
International Journal of Microwave and Wireless Technologies , Volume 7 , Issue 1 , February 2015 , pp. 87 - 94
Copyright
Copyright © Cambridge University Press and the European Microwave Association 2014 

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