Journal article
DoA Estimation Using Compact CRLH Leaky-Wave Antennas: Novel Algorithms and Measured Performance
IEEE transactions on antennas and propagation, v 65(9), pp 4836-4849
Sep 2017
Featured in Collection : UN Sustainable Development Goals @ Drexel
Abstract
Traditional direction-of-arrival (DoA) estimation algorithms for multielement antenna arrays (AAs) are not directly applicable to reconfigurable antennas due to inherent design and operating differences between AAs and reconfigurable antennas. In this paper, we propose novel modifications to the existing DoA algorithms and show how these can be adapted for real-time DoA estimation using two-port composite right/ left-handed (CRLH) reconfigurable leaky-wave antennas (LWAs). First, we propose a single/two-port multiple signal classification (MUSIC) algorithm and derive the corresponding steering vector for reconfigurable LWAs. We also present a power pattern cross correlation algorithm that is based on finding the maximum correlation between the measured radiation patterns and the received powers. For all algorithms, we show how to simultaneously use both ports of the two-port LWA in order to improve the DoA estimation accuracy and, at the same time, reduce the scanning time for the arriving signals. Moreover, we formulate the Cramer-Rao bound for MUSIC-based DoA estimation with LWAs and present an extensive performance evaluation of MUSIC algorithm based on numerical simulations. In addition, these results are compared to DoA estimation with conventional AAs. Finally, we experimentally evaluate the performance of the proposed algorithms in an indoor multipath wireless environment with both line-of-sight (LoS) and non-LoS components. Our results demonstrate that DoA estimation of the received signal can be successfully performed using the two-port CRLH-LWA, even in the presence of severe multipath.
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Details
- Title
- DoA Estimation Using Compact CRLH Leaky-Wave Antennas: Novel Algorithms and Measured Performance
- Creators
- Henna Paaso - VTT Tech. Res. Center of Finland, Oulu, FinlandNikhil Gulati - Gen. Electr., San Ramon, CA, USADamiano Patron - Dept. of Electr. & Comput. Eng., Drexel Univ., Philadelphia, PA, USAAki Hakkarainen - Dept. of Electron. & Commun. Eng., Tampere Univ. of Technol., Tampere, FinlandJanis Werner - Dept. of Electron. & Commun. Eng., Tampere Univ. of Technol., Tampere, FinlandKapil R Dandekar - Dept. of Electr. & Comput. Eng., Drexel Univ., Philadelphia, PA, USAMikko Valkama - Dept. of Electron. & Commun. Eng., Tampere Univ. of Technol., Tampere, FinlandAarne Mammela - VTT Tech. Res. Center of Finland, Oulu, Finland
- Publication Details
- IEEE transactions on antennas and propagation, v 65(9), pp 4836-4849
- Publisher
- IEEE
- Grant note
- Doctoral Program of the President of Tampere University of Technology CNS-1147838 / U.S. National Science Foundation as part of the Wireless Innovation between Finland and United States partnership (10.13039/100000001) VTT Technical Research Center of Finland and the Finnish Funding Agency for Technology and Innovation within the framework of the Reconfigurable Antenna-Based Enhancement of Dynamic Spectrum Access Algorithms project 288670 / Academy of Finland
- Resource Type
- Journal article
- Language
- English
- Academic Unit
- Electrical and Computer Engineering
- Web of Science ID
- WOS:000409538300046
- Scopus ID
- 2-s2.0-85028839957
- Other Identifier
- 991014878540304721
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- Collaboration types
- Industry collaboration
- Domestic collaboration
- International collaboration
- Web of Science research areas
- Engineering, Electrical & Electronic
- Telecommunications