High Performance OAM Communication Exploiting Port-Azimuth Effect of Loop Antennas

Hiroto OTSUKA; Ryohei YAMAGISHI; Akira SAITOU; Hiroshi SUZUKI; Ryo ISHIKAWA; Kazuhiko HONJO

doi:10.1587/transcom.2018EBP3353

IEICE TRANSACTIONS on Communications

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High Performance OAM Communication Exploiting Port-Azimuth Effect of Loop Antennas

Hiroto OTSUKA, Ryohei YAMAGISHI, Akira SAITOU, Hiroshi SUZUKI, Ryo ISHIKAWA, Kazuhiko HONJO

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Summary :

In this paper, we show that the orbital angular momentum (OAM) communication performance with a circular loop antenna array can be drastically improved by exploiting the port azimuth effect at the 5-GHz band. The received signal and interference powers are analytically derived with generalized Z-matrices and the perturbation method for short-range OAM communication. The resulting formulas show that the interference power can be drastically suppressed by selecting the proper combination of port azimuths. We also explain the mechanism behind the reduction in interference power. For the obtained port azimuth combination, the simulated and measured transmission isolations at 1cm are better than 24.0 and 23.6dB at 5.3GHz, respectively. Furthermore, to estimate performance in 2×2 MIMO communication, constellations for 64-QAM are estimated. Measured EVMs are less than 3% where signals are clearly discriminated without any signal processing. For long-range OAM communication using paraboloids, the optimum port azimuth combination is estimated by monitoring the current distribution. For the obtained combination of the port azimuths, simulated and measured transmission isolations at 125cm are better than 15.7 and 12.0dB at 5.3GHz, respectively. The measured isolation for short and long ranges are improved by 9.2 and 4.5dB, respectively, compared with the data for the combination of the identical port azimuth.

Publication: IEICE TRANSACTIONS on Communications Vol.E102-B No.12 pp.2267-2275

Publication Date: 2019/12/01

Publicized: 2019/06/17

Online ISSN: 1745-1345

DOI: 10.1587/transcom.2018EBP3353

Type of Manuscript: PAPER

Category: Antennas and Propagation

Authors

Hiroto OTSUKA
  The University of Electro-Communications
Ryohei YAMAGISHI
  The University of Electro-Communications
Akira SAITOU
  The University of Electro-Communications
Hiroshi SUZUKI
  The University of Electro-Communications
Ryo ISHIKAWA
  The University of Electro-Communications
Kazuhiko HONJO
  The University of Electro-Communications

Keyword

loop antenna, orbital angular momentum, multiplexing

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Hiroto OTSUKA, Ryohei YAMAGISHI, Akira SAITOU, Hiroshi SUZUKI, Ryo ISHIKAWA, Kazuhiko HONJO, "High Performance OAM Communication Exploiting Port-Azimuth Effect of Loop Antennas" in IEICE TRANSACTIONS on Communications, vol. E102-B, no. 12, pp. 2267-2275, December 2019, doi: 10.1587/transcom.2018EBP3353.
Abstract: In this paper, we show that the orbital angular momentum (OAM) communication performance with a circular loop antenna array can be drastically improved by exploiting the port azimuth effect at the 5-GHz band. The received signal and interference powers are analytically derived with generalized Z-matrices and the perturbation method for short-range OAM communication. The resulting formulas show that the interference power can be drastically suppressed by selecting the proper combination of port azimuths. We also explain the mechanism behind the reduction in interference power. For the obtained port azimuth combination, the simulated and measured transmission isolations at 1cm are better than 24.0 and 23.6dB at 5.3GHz, respectively. Furthermore, to estimate performance in 2×2 MIMO communication, constellations for 64-QAM are estimated. Measured EVMs are less than 3% where signals are clearly discriminated without any signal processing. For long-range OAM communication using paraboloids, the optimum port azimuth combination is estimated by monitoring the current distribution. For the obtained combination of the port azimuths, simulated and measured transmission isolations at 125cm are better than 15.7 and 12.0dB at 5.3GHz, respectively. The measured isolation for short and long ranges are improved by 9.2 and 4.5dB, respectively, compared with the data for the combination of the identical port azimuth.
URL: https://global.ieice.org/en_transactions/communications/10.1587/transcom.2018EBP3353/_p

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@ARTICLE{e102-b_12_2267,
author={Hiroto OTSUKA, Ryohei YAMAGISHI, Akira SAITOU, Hiroshi SUZUKI, Ryo ISHIKAWA, Kazuhiko HONJO, },
journal={IEICE TRANSACTIONS on Communications},
title={High Performance OAM Communication Exploiting Port-Azimuth Effect of Loop Antennas},
year={2019},
volume={E102-B},
number={12},
pages={2267-2275},
abstract={In this paper, we show that the orbital angular momentum (OAM) communication performance with a circular loop antenna array can be drastically improved by exploiting the port azimuth effect at the 5-GHz band. The received signal and interference powers are analytically derived with generalized Z-matrices and the perturbation method for short-range OAM communication. The resulting formulas show that the interference power can be drastically suppressed by selecting the proper combination of port azimuths. We also explain the mechanism behind the reduction in interference power. For the obtained port azimuth combination, the simulated and measured transmission isolations at 1cm are better than 24.0 and 23.6dB at 5.3GHz, respectively. Furthermore, to estimate performance in 2×2 MIMO communication, constellations for 64-QAM are estimated. Measured EVMs are less than 3% where signals are clearly discriminated without any signal processing. For long-range OAM communication using paraboloids, the optimum port azimuth combination is estimated by monitoring the current distribution. For the obtained combination of the port azimuths, simulated and measured transmission isolations at 125cm are better than 15.7 and 12.0dB at 5.3GHz, respectively. The measured isolation for short and long ranges are improved by 9.2 and 4.5dB, respectively, compared with the data for the combination of the identical port azimuth.},
keywords={},
doi={10.1587/transcom.2018EBP3353},
ISSN={1745-1345},
month={December},}

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TY - JOUR
TI - High Performance OAM Communication Exploiting Port-Azimuth Effect of Loop Antennas
T2 - IEICE TRANSACTIONS on Communications
SP - 2267
EP - 2275
AU - Hiroto OTSUKA
AU - Ryohei YAMAGISHI
AU - Akira SAITOU
AU - Hiroshi SUZUKI
AU - Ryo ISHIKAWA
AU - Kazuhiko HONJO
PY - 2019
DO - 10.1587/transcom.2018EBP3353
JO - IEICE TRANSACTIONS on Communications
SN - 1745-1345
VL - E102-B
IS - 12
JA - IEICE TRANSACTIONS on Communications
Y1 - December 2019
AB - In this paper, we show that the orbital angular momentum (OAM) communication performance with a circular loop antenna array can be drastically improved by exploiting the port azimuth effect at the 5-GHz band. The received signal and interference powers are analytically derived with generalized Z-matrices and the perturbation method for short-range OAM communication. The resulting formulas show that the interference power can be drastically suppressed by selecting the proper combination of port azimuths. We also explain the mechanism behind the reduction in interference power. For the obtained port azimuth combination, the simulated and measured transmission isolations at 1cm are better than 24.0 and 23.6dB at 5.3GHz, respectively. Furthermore, to estimate performance in 2×2 MIMO communication, constellations for 64-QAM are estimated. Measured EVMs are less than 3% where signals are clearly discriminated without any signal processing. For long-range OAM communication using paraboloids, the optimum port azimuth combination is estimated by monitoring the current distribution. For the obtained combination of the port azimuths, simulated and measured transmission isolations at 125cm are better than 15.7 and 12.0dB at 5.3GHz, respectively. The measured isolation for short and long ranges are improved by 9.2 and 4.5dB, respectively, compared with the data for the combination of the identical port azimuth.
ER -

IEICE TRANSACTIONS on Communications