DoA estimation through modified unitary MUSIC algorithm for CRLH leaky-wave antennas

Henna Paaso, Aarne Mämmelä, Damiano D. Patron, Kapil R. Dandekar

Research output: Chapter in Book/Report/Conference proceedingConference article in proceedingsScientificpeer-review

5 Citations (Scopus)

Abstract

In this paper, we propose a modified unitary multiple signal classification (MUSIC) algorithm for a two-port composite right/left handed (CRLH) leaky-wave antenna (LWA). The algorithm requires only real-valued operations to estimate direction of arrival (DoA) of the received signals, which will simplify future hardware implementation. The CRLH LWA consists of a cascade of metamaterial unit cells, periodically modulated using varactor diodes. By changing the voltages across series and shunt varactors, the antenna is able to uniformly steer its radiation pattern. The proposed modified unitary MUSIC algorithm uses both antennas' input ports to estimate the DoA. Existing MUSIC implementations requires eigenvalue decomposition in the complex-valued signal subspace, which results in highly complex hardware implementation. The computational complexity can be reduced using our proposed modified unitary MUSIC algorithm since it transforms the complex-valued covariance matrix of the received signals to a real-valued matrix using unitary transformations. The performance of the algorithm is experimentally demonstrated by using a CRLH LWA within an anechoic chamber facility and the estimated DoA results are in good agreement with the predicted angles.
Original languageEnglish
Title of host publication2013 IEEE 24th Annual International Symposium on Personal, Indoor, and Mobile Radio Communications (PIMRC)
PublisherInstitute of Electrical and Electronic Engineers IEEE
Pages311-315
Number of pages5
ISBN (Electronic)978-1-4673-6235-1
DOIs
Publication statusPublished - 11 Dec 2013
MoE publication typeA4 Article in a conference publication
Event24th Annual IEEE International Symposium on Personal, Indoor and Mobile Radio Communications, PIMRC'13 - London, United Kingdom
Duration: 8 Nov 201311 Nov 2013
Conference number: 24

Publication series

Name
ISSN (Print)2166-9570
ISSN (Electronic)2166-9589

Conference

Conference24th Annual IEEE International Symposium on Personal, Indoor and Mobile Radio Communications, PIMRC'13
Abbreviated titlePIMRC'13
CountryUnited Kingdom
CityLondon
Period8/11/1311/11/13

Fingerprint

Direction of arrival
Antennas
Composite materials
Varactors
Hardware
Anechoic chambers
Metamaterials
Directional patterns (antenna)
Covariance matrix
Computational complexity
Diodes
Decomposition
Electric potential

Keywords

  • matrix decomposition
  • correlation
  • antenna arrays
  • multiple signal classification
  • direction-of-arrival estimation
  • estimation

Cite this

Paaso, H., Mämmelä, A., D. Patron, D., & Dandekar, K. R. (2013). DoA estimation through modified unitary MUSIC algorithm for CRLH leaky-wave antennas. In 2013 IEEE 24th Annual International Symposium on Personal, Indoor, and Mobile Radio Communications (PIMRC) (pp. 311-315). Institute of Electrical and Electronic Engineers IEEE. https://doi.org/10.1109/PIMRC.2013.6666152
Paaso, Henna ; Mämmelä, Aarne ; D. Patron, Damiano ; Dandekar, Kapil R. / DoA estimation through modified unitary MUSIC algorithm for CRLH leaky-wave antennas. 2013 IEEE 24th Annual International Symposium on Personal, Indoor, and Mobile Radio Communications (PIMRC). Institute of Electrical and Electronic Engineers IEEE, 2013. pp. 311-315
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Paaso, H, Mämmelä, A, D. Patron, D & Dandekar, KR 2013, DoA estimation through modified unitary MUSIC algorithm for CRLH leaky-wave antennas. in 2013 IEEE 24th Annual International Symposium on Personal, Indoor, and Mobile Radio Communications (PIMRC). Institute of Electrical and Electronic Engineers IEEE, pp. 311-315, 24th Annual IEEE International Symposium on Personal, Indoor and Mobile Radio Communications, PIMRC'13, London, United Kingdom, 8/11/13. https://doi.org/10.1109/PIMRC.2013.6666152

DoA estimation through modified unitary MUSIC algorithm for CRLH leaky-wave antennas. / Paaso, Henna; Mämmelä, Aarne; D. Patron, Damiano; Dandekar, Kapil R.

2013 IEEE 24th Annual International Symposium on Personal, Indoor, and Mobile Radio Communications (PIMRC). Institute of Electrical and Electronic Engineers IEEE, 2013. p. 311-315.

Research output: Chapter in Book/Report/Conference proceedingConference article in proceedingsScientificpeer-review

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N2 - In this paper, we propose a modified unitary multiple signal classification (MUSIC) algorithm for a two-port composite right/left handed (CRLH) leaky-wave antenna (LWA). The algorithm requires only real-valued operations to estimate direction of arrival (DoA) of the received signals, which will simplify future hardware implementation. The CRLH LWA consists of a cascade of metamaterial unit cells, periodically modulated using varactor diodes. By changing the voltages across series and shunt varactors, the antenna is able to uniformly steer its radiation pattern. The proposed modified unitary MUSIC algorithm uses both antennas' input ports to estimate the DoA. Existing MUSIC implementations requires eigenvalue decomposition in the complex-valued signal subspace, which results in highly complex hardware implementation. The computational complexity can be reduced using our proposed modified unitary MUSIC algorithm since it transforms the complex-valued covariance matrix of the received signals to a real-valued matrix using unitary transformations. The performance of the algorithm is experimentally demonstrated by using a CRLH LWA within an anechoic chamber facility and the estimated DoA results are in good agreement with the predicted angles.

AB - In this paper, we propose a modified unitary multiple signal classification (MUSIC) algorithm for a two-port composite right/left handed (CRLH) leaky-wave antenna (LWA). The algorithm requires only real-valued operations to estimate direction of arrival (DoA) of the received signals, which will simplify future hardware implementation. The CRLH LWA consists of a cascade of metamaterial unit cells, periodically modulated using varactor diodes. By changing the voltages across series and shunt varactors, the antenna is able to uniformly steer its radiation pattern. The proposed modified unitary MUSIC algorithm uses both antennas' input ports to estimate the DoA. Existing MUSIC implementations requires eigenvalue decomposition in the complex-valued signal subspace, which results in highly complex hardware implementation. The computational complexity can be reduced using our proposed modified unitary MUSIC algorithm since it transforms the complex-valued covariance matrix of the received signals to a real-valued matrix using unitary transformations. The performance of the algorithm is experimentally demonstrated by using a CRLH LWA within an anechoic chamber facility and the estimated DoA results are in good agreement with the predicted angles.

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Paaso H, Mämmelä A, D. Patron D, Dandekar KR. DoA estimation through modified unitary MUSIC algorithm for CRLH leaky-wave antennas. In 2013 IEEE 24th Annual International Symposium on Personal, Indoor, and Mobile Radio Communications (PIMRC). Institute of Electrical and Electronic Engineers IEEE. 2013. p. 311-315 https://doi.org/10.1109/PIMRC.2013.6666152