Phase Calibration of a Massive MIMO System for Direction of Arrival Applications

In this paper we perform a Uniform Linear Array (ULA), Multiple Input Multiple Output (MIMO) system calibration, to measure the Direction of Arrival (DoA) of multiple User Equipment (UE). We consider wired, wireless, Over-the-Air (OTA) calibration operations. The calibrated signals are then processe...

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Bibliographic Details
Published in2019 IEEE MTT-S International Microwave Conference on Hardware and Systems for 5G and Beyond (IMC-5G) pp. 1 - 3
Main Authors Al-Dabbagh, Mohanad Dawood, Gaber, Abdo, Omar, Abbas
Format Conference Proceeding
LanguageEnglish
Published IEEE 01.08.2019
Subjects
Calibration
Digital MIMO Calibration
Direction-of-arrival estimation
DoA
MIMO communication
OTA
Phase measurement
Phased arrays
Radio frequency
ULA
Wireless communication
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Summary:In this paper we perform a Uniform Linear Array (ULA), Multiple Input Multiple Output (MIMO) system calibration, to measure the Direction of Arrival (DoA) of multiple User Equipment (UE). We consider wired, wireless, Over-the-Air (OTA) calibration operations. The calibrated signals are then processed using Matrix Pencil (MP) estimation technique to achieve the DoA measurements. The results show that DoA stability and accuracy can be achieved using both of the procedures. The results show that an offline calibration vector can be a replacement for real time calibration. It also shows the feasibility of mutual wireless calibration among distant wireless systems, to avoid the need for the costly, and permeant wired calibration connections.
DOI:10.1109/IMC-5G47857.2019.9160375