OTA Testing for Massive MIMO Devices Using Cascaded APM Networks and Channel Emulators
Joint Authors
Li, Yong
Sun, Hao
Xin, Lijian
Zhang, Xiang
Source
International Journal of Antennas and Propagation
Issue
Vol. 2019, Issue 2019 (31 Dec. 2019), pp.1-14, 14 p.
Publisher
Hindawi Publishing Corporation
Publication Date
2019-11-12
Country of Publication
Egypt
No. of Pages
14
Main Subjects
Abstract EN
This paper proposes an over-the-air (OTA) testing setup for millimeter-wave (mmWave) massive multiple-input multiple-output (MIMO) equipment using cascaded amplitude and phase modulation (APM) network and channel emulator.
Compared with the existing test setup with mechanical switch, the proposed testing setup enables more accurate reconstruction of the radio channel environment under the multiprobe anechoic chamber (MPAC) setup without increasing the number of channel emulators (CEs) to control the system cost.
The constructed MPAC testing setup for mmWave and massive MIMO equipment is composed of an anechoic chamber, a sectored probe wall containing a number of probes, an APM network, a fading channel emulator, and a user emulator (UE).
In this paper, the structural model and the performance advantages of the proposed radiated testing setup are described, and a fully connected APM network for radiated testing is more prominent than the existing switch.
Moreover, the angular spectrum is selected as the performance metric for the reconstructed channel.
The ability of the proposed system to reconstruct the power angular spectrum (PAS) of the target channel is studied under both static and dynamic channel models, which can reflect the performance of beamforming procedures of the massive MIMO antenna arrays, e.g., beam acquisition, tracking, and refinement.
The simulation results for angular spectrum support the superiority of the proposed OTA testing setup.
Furthermore, the simulations for average channel capacity also show that radiated testing setup using cascaded APM network and channel emulator is valid.
American Psychological Association (APA)
Xin, Lijian& Li, Yong& Sun, Hao& Zhang, Xiang. 2019. OTA Testing for Massive MIMO Devices Using Cascaded APM Networks and Channel Emulators. International Journal of Antennas and Propagation،Vol. 2019, no. 2019, pp.1-14.
https://search.emarefa.net/detail/BIM-1157723
Modern Language Association (MLA)
Xin, Lijian…[et al.]. OTA Testing for Massive MIMO Devices Using Cascaded APM Networks and Channel Emulators. International Journal of Antennas and Propagation No. 2019 (2019), pp.1-14.
https://search.emarefa.net/detail/BIM-1157723
American Medical Association (AMA)
Xin, Lijian& Li, Yong& Sun, Hao& Zhang, Xiang. OTA Testing for Massive MIMO Devices Using Cascaded APM Networks and Channel Emulators. International Journal of Antennas and Propagation. 2019. Vol. 2019, no. 2019, pp.1-14.
https://search.emarefa.net/detail/BIM-1157723
Data Type
Journal Articles
Language
English
Notes
Includes bibliographical references
Record ID
BIM-1157723