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Sensors 2018, 18(4), 1186; https://doi.org/10.3390/s18041186

Practical 3-D Beam Pattern Based Channel Modeling for Multi-Polarized Massive MIMO Systems

1
Department of Electronics Engineering, Shanghai Jiao Tong University, Shanghai 200240, China
2
Department of Innovation, Design and Technology (IDT), Mälardalen University, 72123 Västerås, Sweden
3
RISE SICS Västerås, Stora gatan 36, 722 12 Västerås, Sweden
This paper is an extended version of our paper published in Aghaeinezhadfirouzja, S., Liu, H., Xia, B., Luo, Q., Guo,W. “Third Dimension for Measurement of Multi User Massive MIMO Channels based on LTE Advanced Downlink", GlobalSIP Conference, Washington, DC, USA, 7–9 December 2016.
*
Author to whom correspondence should be addressed.
Received: 15 March 2018 / Revised: 7 April 2018 / Accepted: 7 April 2018 / Published: 12 April 2018
(This article belongs to the Special Issue Smart Vehicular Mobile Sensing)
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Abstract

In this paper, a practical non-stationary three-dimensional (3-D) channel models for massive multiple-input multiple-output (MIMO) systems, considering beam patterns for different antenna elements, is proposed. The beam patterns using dipole antenna elements with different phase excitation toward the different direction of travels (DoTs) contributes various correlation weights for rays related towards/from the cluster, thus providing different elevation angle of arrivals (EAoAs) and elevation angle of departures (EAoDs) for each antenna element. These include the movements of the user that makes our channel to be a non-stationary model of clusters at the receiver (RX) on both the time and array axes. In addition, their impacts on 3-D massive MIMO channels are investigated via statistical properties including received spatial correlation. Additionally, the impact of elevation/azimuth angles of arrival on received spatial correlation is discussed. Furthermore, experimental validation of the proposed 3-D channel models on azimuth and elevation angles of the polarized antenna are specifically evaluated and compared through simulations. The proposed 3-D generic models are verified using relevant measurement data. View Full-Text
Keywords: 3-D massive MIMO channel modeling; antenna elements space; elevation angle of departure; elevation angle of arrival; azimuth angle of departure; azimuth angle of arrival 3-D massive MIMO channel modeling; antenna elements space; elevation angle of departure; elevation angle of arrival; azimuth angle of departure; azimuth angle of arrival
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This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited. (CC BY 4.0).
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Aghaeinezhadfirouzja, S.; Liu, H.; Balador, A. Practical 3-D Beam Pattern Based Channel Modeling for Multi-Polarized Massive MIMO Systems. Sensors 2018, 18, 1186.

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