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Development and Experimental Validation of an Ultra-wideband Channel Sounder

Fan, Wei ; Mbugua, Allan Wainaina ; Cai, Xuesong LU and Olesen, Kim (2019) 13th European Conference on Antennas and Propagation, EuCAP 2019
Abstract

Vector network analyzer (VNA) has been extensively utilized for radio channel sounding purposes. Due to its slow channel sounding speed, it has been mainly used for channel measurements in static propagation scenarios. The main limitation with VNA based channel sounder is its small measurement range, due to signal attenuation in the coaxial cable setup. Employing radio over fiber (RoF) can effectively eliminate the cable loss and hence enables the VNA for long range channel sounding. However, optical cables are sensitive to phase changes in optical cables in practical usage scenarios. In this paper, two phase correction strategies, i.e. two-branch scheme and bi-directional scheme, are discussed and experimentally validated to remove the... (More)

Vector network analyzer (VNA) has been extensively utilized for radio channel sounding purposes. Due to its slow channel sounding speed, it has been mainly used for channel measurements in static propagation scenarios. The main limitation with VNA based channel sounder is its small measurement range, due to signal attenuation in the coaxial cable setup. Employing radio over fiber (RoF) can effectively eliminate the cable loss and hence enables the VNA for long range channel sounding. However, optical cables are sensitive to phase changes in optical cables in practical usage scenarios. In this paper, two phase correction strategies, i.e. two-branch scheme and bi-directional scheme, are discussed and experimentally validated to remove the random phase change in the cable. The bi-directional scheme is shown to be highly effective in removing the phase change in the measurements. The virtual array VNA channel sounder employing RoF technique and phase correction scheme is highly attractive, since it supports channel sounding with arbitrary frequency carrier setting, ultra-wideband, large-scale (virtual) antenna settings with a large measurement range.

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Please use this url to cite or link to this publication:
author
; ; and
publishing date
type
Chapter in Book/Report/Conference proceeding
publication status
published
subject
host publication
13th European Conference on Antennas and Propagation, EuCAP 2019
article number
8739294
publisher
IEEE - Institute of Electrical and Electronics Engineers Inc.
conference name
13th European Conference on Antennas and Propagation, EuCAP 2019
conference location
Krakow, Poland
conference dates
2019-03-31 - 2019-04-05
external identifiers
  • scopus:85068478614
ISBN
9781538681275
9788890701887
language
English
LU publication?
no
additional info
Funding Information: Dr. Wei Fan would like to acknowledge the financial assistance from Danish council for independent research (grant number: DFF611100525), the VIRTUSUO project, funded by the Innovation Fund Denmark and Huawei technologies. Publisher Copyright: © 2019 European Association on Antennas and Propagation.
id
6958410f-b9a7-4704-9456-21ee94749efa
alternative location
https://ieeexplore.ieee.org/document/8739294
date added to LUP
2021-11-22 22:45:04
date last changed
2024-07-28 01:29:22
@inproceedings{6958410f-b9a7-4704-9456-21ee94749efa,
  abstract     = {{<p>Vector network analyzer (VNA) has been extensively utilized for radio channel sounding purposes. Due to its slow channel sounding speed, it has been mainly used for channel measurements in static propagation scenarios. The main limitation with VNA based channel sounder is its small measurement range, due to signal attenuation in the coaxial cable setup. Employing radio over fiber (RoF) can effectively eliminate the cable loss and hence enables the VNA for long range channel sounding. However, optical cables are sensitive to phase changes in optical cables in practical usage scenarios. In this paper, two phase correction strategies, i.e. two-branch scheme and bi-directional scheme, are discussed and experimentally validated to remove the random phase change in the cable. The bi-directional scheme is shown to be highly effective in removing the phase change in the measurements. The virtual array VNA channel sounder employing RoF technique and phase correction scheme is highly attractive, since it supports channel sounding with arbitrary frequency carrier setting, ultra-wideband, large-scale (virtual) antenna settings with a large measurement range.</p>}},
  author       = {{Fan, Wei and Mbugua, Allan Wainaina and Cai, Xuesong and Olesen, Kim}},
  booktitle    = {{13th European Conference on Antennas and Propagation, EuCAP 2019}},
  isbn         = {{9781538681275}},
  language     = {{eng}},
  publisher    = {{IEEE - Institute of Electrical and Electronics Engineers Inc.}},
  title        = {{Development and Experimental Validation of an Ultra-wideband Channel Sounder}},
  url          = {{https://ieeexplore.ieee.org/document/8739294}},
  year         = {{2019}},
}