Fundamental System-Degrading Effects in THz Communications Using Multiple OAM beams with Turbulence

Zhe Zhao; Runzhou Zhang; Hao Song; Kai Pang; Ahmed Almaiman; Huibin Zhou; Haoqian Song; Cong Liu; Nanzhe Hu; Xinzhou Su; Amir Minoofar; Shlomo Zach; Nadav Cohen; Moshe Tur; Andreas Molisch; Alan E. Willner

doi:10.1109/icc40277.2020.9149201

Fundamental System-Degrading Effects in THz Communications Using Multiple OAM beams with Turbulence

Zhe Zhao, Runzhou Zhang, Hao Song, Kai Pang, Ahmed Almaiman, Huibin Zhou, Haoqian Song, Cong Liu, Nanzhe Hu, Xinzhou Su, Amir Minoofar, Shlomo Zach, Nadav Cohen, Moshe Tur, Andreas Molisch, Alan E. Willner

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution › peer-review

9 Scopus citations

Abstract

We explore and find the fundamental systemdegrading effects when using multiple orbital-angular-momentum (OAM) beams in a THz communications link under atmospheric turbulence in simulation. Unlike optical links with relatively small divergence effects, the crosstalk performance of THz OAM links is dependent on divergence-related parameters, including OAM mode order, frequency, and beam waist. Simulation results show: (i) for the cases with the same ratio of beam diameter to the Fried parameter (D/r₀), the signal power increases and the crosstalk (XT) decreases when increasing the divergence-related parameters; and (ii) for the cases with the same atmospheric structure constant Cn2, the signal power decreases and the XT increases when increasing the divergence-related parameters. Moreover, for building a link where OAM +4 is transmitted with the parameters: (i) beam waist of 0.1 m and link distance of 200 m, and (ii) beam waist of 1 m and link distance of 1 km, the XT from neighbouring mode remains less than -15 dB when carrier wave frequency is 1 THz and 0.1 THz, respectively. In addition, simulation results also show that: (i) limited aperture size of the system has high influence on the XT performance under both weak and strong turbulence; and (ii) displacement of the system has high influence on the XT performance under no and weak turbulence.

Original language	English
Title of host publication	2020 IEEE International Conference on Communications, ICC 2020 - Proceedings
Publisher	Institute of Electrical and Electronics Engineers Inc.
ISBN (Electronic)	9781728150895
DOIs	https://doi.org/10.1109/icc40277.2020.9149201
State	Published - Jun 2020
Externally published	Yes
Event	2020 IEEE International Conference on Communications, ICC 2020 - Dublin, Ireland Duration: 7 Jun 2020 → 11 Jun 2020

Publication series

Name	IEEE International Conference on Communications
Volume	2020-June
ISSN (Print)	1550-3607

Conference

Conference	2020 IEEE International Conference on Communications, ICC 2020
Country/Territory	Ireland
City	Dublin
Period	7/06/20 → 11/06/20

Bibliographical note

Publisher Copyright:
© 2020 IEEE.

Funding

ACKNOWLEDGMENT This work is supported by National Science Foundation (NSF) (ECCS-1509965); Vannevar Bush Faculty Fellowship sponsored by the Basic Research Office of the Assistant Secretary of Defense (ASD) for Research and Engineering (R&E) and funded by the Office of Naval Research (ONR) (N00014-16-1-2813); and Defense Security Cooperation Agency (DSCA 4440646262).

Funders	Funder number
Basic Research Office of the Assistant Secretary of Defense
Defense Security Cooperation Agency	DSCA 4440646262
National Science Foundation	ECCS-1509965
Office of Naval Research	N00014-16-1-2813
Astrophysics Science Division

Keywords

Atmospheric turbulence
millimeter wave
orbital angular momentum
spatial-division multiplexing

Access to Document

10.1109/icc40277.2020.9149201

Cite this

Zhao, Z., Zhang, R., Song, H., Pang, K., Almaiman, A., Zhou, H., Song, H., Liu, C., Hu, N., Su, X., Minoofar, A., Zach, S., Cohen, N., Tur, M., Molisch, A., & Willner, A. E. (2020). Fundamental System-Degrading Effects in THz Communications Using Multiple OAM beams with Turbulence. In 2020 IEEE International Conference on Communications, ICC 2020 - Proceedings Article 9149201 (IEEE International Conference on Communications; Vol. 2020-June). Institute of Electrical and Electronics Engineers Inc.. https://doi.org/10.1109/icc40277.2020.9149201

@inproceedings{79d9d92d2b764cc394a6bf7ca3f3bacb,

title = "Fundamental System-Degrading Effects in THz Communications Using Multiple OAM beams with Turbulence",

abstract = "We explore and find the fundamental systemdegrading effects when using multiple orbital-angular-momentum (OAM) beams in a THz communications link under atmospheric turbulence in simulation. Unlike optical links with relatively small divergence effects, the crosstalk performance of THz OAM links is dependent on divergence-related parameters, including OAM mode order, frequency, and beam waist. Simulation results show: (i) for the cases with the same ratio of beam diameter to the Fried parameter (D/r0), the signal power increases and the crosstalk (XT) decreases when increasing the divergence-related parameters; and (ii) for the cases with the same atmospheric structure constant Cn2, the signal power decreases and the XT increases when increasing the divergence-related parameters. Moreover, for building a link where OAM +4 is transmitted with the parameters: (i) beam waist of 0.1 m and link distance of 200 m, and (ii) beam waist of 1 m and link distance of 1 km, the XT from neighbouring mode remains less than -15 dB when carrier wave frequency is 1 THz and 0.1 THz, respectively. In addition, simulation results also show that: (i) limited aperture size of the system has high influence on the XT performance under both weak and strong turbulence; and (ii) displacement of the system has high influence on the XT performance under no and weak turbulence.",

keywords = "Atmospheric turbulence, millimeter wave, orbital angular momentum, spatial-division multiplexing",

author = "Zhe Zhao and Runzhou Zhang and Hao Song and Kai Pang and Ahmed Almaiman and Huibin Zhou and Haoqian Song and Cong Liu and Nanzhe Hu and Xinzhou Su and Amir Minoofar and Shlomo Zach and Nadav Cohen and Moshe Tur and Andreas Molisch and Willner, {Alan E.}",

note = "Publisher Copyright: {\textcopyright} 2020 IEEE.; 2020 IEEE International Conference on Communications, ICC 2020 ; Conference date: 07-06-2020 Through 11-06-2020",

year = "2020",

month = jun,

doi = "10.1109/icc40277.2020.9149201",

language = "אנגלית",

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Zhao, Z, Zhang, R, Song, H, Pang, K, Almaiman, A, Zhou, H, Song, H, Liu, C, Hu, N, Su, X, Minoofar, A, Zach, S, Cohen, N, Tur, M, Molisch, A & Willner, AE 2020, Fundamental System-Degrading Effects in THz Communications Using Multiple OAM beams with Turbulence. in 2020 IEEE International Conference on Communications, ICC 2020 - Proceedings., 9149201, IEEE International Conference on Communications, vol. 2020-June, Institute of Electrical and Electronics Engineers Inc., 2020 IEEE International Conference on Communications, ICC 2020, Dublin, Ireland, 7/06/20. https://doi.org/10.1109/icc40277.2020.9149201

Fundamental System-Degrading Effects in THz Communications Using Multiple OAM beams with Turbulence. / Zhao, Zhe; Zhang, Runzhou; Song, Hao et al.
2020 IEEE International Conference on Communications, ICC 2020 - Proceedings. Institute of Electrical and Electronics Engineers Inc., 2020. 9149201 (IEEE International Conference on Communications; Vol. 2020-June).

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution › peer-review

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T1 - Fundamental System-Degrading Effects in THz Communications Using Multiple OAM beams with Turbulence

AU - Zhao, Zhe

AU - Zhang, Runzhou

AU - Song, Hao

AU - Pang, Kai

AU - Almaiman, Ahmed

AU - Zhou, Huibin

AU - Song, Haoqian

AU - Liu, Cong

AU - Hu, Nanzhe

AU - Su, Xinzhou

AU - Minoofar, Amir

AU - Zach, Shlomo

AU - Cohen, Nadav

AU - Tur, Moshe

AU - Molisch, Andreas

AU - Willner, Alan E.

PY - 2020/6

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N2 - We explore and find the fundamental systemdegrading effects when using multiple orbital-angular-momentum (OAM) beams in a THz communications link under atmospheric turbulence in simulation. Unlike optical links with relatively small divergence effects, the crosstalk performance of THz OAM links is dependent on divergence-related parameters, including OAM mode order, frequency, and beam waist. Simulation results show: (i) for the cases with the same ratio of beam diameter to the Fried parameter (D/r0), the signal power increases and the crosstalk (XT) decreases when increasing the divergence-related parameters; and (ii) for the cases with the same atmospheric structure constant Cn2, the signal power decreases and the XT increases when increasing the divergence-related parameters. Moreover, for building a link where OAM +4 is transmitted with the parameters: (i) beam waist of 0.1 m and link distance of 200 m, and (ii) beam waist of 1 m and link distance of 1 km, the XT from neighbouring mode remains less than -15 dB when carrier wave frequency is 1 THz and 0.1 THz, respectively. In addition, simulation results also show that: (i) limited aperture size of the system has high influence on the XT performance under both weak and strong turbulence; and (ii) displacement of the system has high influence on the XT performance under no and weak turbulence.

AB - We explore and find the fundamental systemdegrading effects when using multiple orbital-angular-momentum (OAM) beams in a THz communications link under atmospheric turbulence in simulation. Unlike optical links with relatively small divergence effects, the crosstalk performance of THz OAM links is dependent on divergence-related parameters, including OAM mode order, frequency, and beam waist. Simulation results show: (i) for the cases with the same ratio of beam diameter to the Fried parameter (D/r0), the signal power increases and the crosstalk (XT) decreases when increasing the divergence-related parameters; and (ii) for the cases with the same atmospheric structure constant Cn2, the signal power decreases and the XT increases when increasing the divergence-related parameters. Moreover, for building a link where OAM +4 is transmitted with the parameters: (i) beam waist of 0.1 m and link distance of 200 m, and (ii) beam waist of 1 m and link distance of 1 km, the XT from neighbouring mode remains less than -15 dB when carrier wave frequency is 1 THz and 0.1 THz, respectively. In addition, simulation results also show that: (i) limited aperture size of the system has high influence on the XT performance under both weak and strong turbulence; and (ii) displacement of the system has high influence on the XT performance under no and weak turbulence.

KW - Atmospheric turbulence

KW - millimeter wave

KW - orbital angular momentum

KW - spatial-division multiplexing

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ER -

Zhao Z, Zhang R, Song H, Pang K, Almaiman A, Zhou H et al. Fundamental System-Degrading Effects in THz Communications Using Multiple OAM beams with Turbulence. In 2020 IEEE International Conference on Communications, ICC 2020 - Proceedings. Institute of Electrical and Electronics Engineers Inc. 2020. 9149201. (IEEE International Conference on Communications). doi: 10.1109/icc40277.2020.9149201

Fundamental System-Degrading Effects in THz Communications Using Multiple OAM beams with Turbulence

Abstract

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Keywords

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