27.5-29.5 GHz Switched Array Sounder for Dynamic Channel Characterization: Design, Implementation and Measurements
Tataria, Harsh LU ; Bengtsson, Erik L LU ; Edfors, Ove LU
and Tufvesson, Fredrik
LU
(2021)
In IEEE Transactions on Wireless Communications
- Abstract
- A pre-requisite for the design of wireless systems is the understanding of the propagation channel. While a wealth of propagation knowledge exists for bands below 6 GHz, the same can not be said for bands approaching millimeter-wave frequencies. In this paper, we present the design, implementation and measurement-based verification of a re-configurable 27.5-29.5 GHz channel sounder for measuring dynamic directional channels. Based on the switched array principle, our design is capable of characterizing 128$\times$256 dual-polarized channels with snapshot times of around 600 ms. This is in sharp contrast to measurement times on the order of tens-of-minutes with rotating horn antenna sounders. Our design lends itself to high angular... (More)
- A pre-requisite for the design of wireless systems is the understanding of the propagation channel. While a wealth of propagation knowledge exists for bands below 6 GHz, the same can not be said for bands approaching millimeter-wave frequencies. In this paper, we present the design, implementation and measurement-based verification of a re-configurable 27.5-29.5 GHz channel sounder for measuring dynamic directional channels. Based on the switched array principle, our design is capable of characterizing 128$\times$256 dual-polarized channels with snapshot times of around 600 ms. This is in sharp contrast to measurement times on the order of tens-of-minutes with rotating horn antenna sounders. Our design lends itself to high angular resolution at both link ends with calibrated antenna arrays sampled at 2${^\circ}$ and 5${^\circ}$ intervals in the azimuth and elevation domains. This is complemented with a bandwidth of up to 2 GHz, enabling nanosecond-level delay resolution. The short measurement times and stable radio frequency design facilitates real-time processing and averaging of the received wavefronts to gain measurement signal-to-noise ratio and dynamic range. After disclosing the sounder design and implementation, we demonstrate its capabilities by presenting dynamic and static measurements at 28 GHz over a 1 GHz bandwidth in an office corridor environment. (Less)
Please use this url to cite or link to this publication:
https://lup.lub.lu.se/record/bdb4a4ed-338f-46c8-ae72-fc4972961c13
- author
- Tataria, Harsh
LU
; Bengtsson, Erik L
LU
; Edfors, Ove
LU
and Tufvesson, Fredrik
LU
- organization
- publishing date
- 2021-05-22
- type
- Contribution to journal
- publication status
- submitted
- subject
- keywords
- Channel sounder design, dynamic channels, mmWave, propagation measurements, switched arrays
- in
- IEEE Transactions on Wireless Communications
- pages
- 30 pages
- publisher
- IEEE - Institute of Electrical and Electronics Engineers Inc.
- ISSN
- 1536-1276
- project
- Massive Mimo Technology and Applications
- language
- English
- LU publication?
- yes
- additional info
- For publication in IEEE Transactions on Wireless Communications
- id
- bdb4a4ed-338f-46c8-ae72-fc4972961c13
- alternative location
- https://arxiv.org/pdf/2105.10712.pdf
- date added to LUP
- 2021-06-01 04:06:01
- date last changed
- 2021-06-01 10:52:12
@article{bdb4a4ed-338f-46c8-ae72-fc4972961c13,
abstract = {{A pre-requisite for the design of wireless systems is the understanding of the propagation channel. While a wealth of propagation knowledge exists for bands below 6 GHz, the same can not be said for bands approaching millimeter-wave frequencies. In this paper, we present the design, implementation and measurement-based verification of a re-configurable 27.5-29.5 GHz channel sounder for measuring dynamic directional channels. Based on the switched array principle, our design is capable of characterizing 128$\times$256 dual-polarized channels with snapshot times of around 600 ms. This is in sharp contrast to measurement times on the order of tens-of-minutes with rotating horn antenna sounders. Our design lends itself to high angular resolution at both link ends with calibrated antenna arrays sampled at 2${^\circ}$ and 5${^\circ}$ intervals in the azimuth and elevation domains. This is complemented with a bandwidth of up to 2 GHz, enabling nanosecond-level delay resolution. The short measurement times and stable radio frequency design facilitates real-time processing and averaging of the received wavefronts to gain measurement signal-to-noise ratio and dynamic range. After disclosing the sounder design and implementation, we demonstrate its capabilities by presenting dynamic and static measurements at 28 GHz over a 1 GHz bandwidth in an office corridor environment.}},
author = {{Tataria, Harsh and Bengtsson, Erik L and Edfors, Ove and Tufvesson, Fredrik}},
issn = {{1536-1276}},
keywords = {{Channel sounder design; dynamic channels; mmWave; propagation measurements; switched arrays}},
language = {{eng}},
month = {{05}},
publisher = {{IEEE - Institute of Electrical and Electronics Engineers Inc.}},
series = {{IEEE Transactions on Wireless Communications}},
title = {{27.5-29.5 GHz Switched Array Sounder for Dynamic Channel Characterization: Design, Implementation and Measurements}},
url = {{https://arxiv.org/pdf/2105.10712.pdf}},
year = {{2021}},
}