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(Invited Paper) A Massive 28 GHz Switched Array Sounder for Dynamic Channel Characterization

Tataria, Harsh LU ; Bengtsson, Erik L LU ; karlsson, Peter C. and Tufvesson, Fredrik LU (2019) IEEE 53rd Annual Asilomar Conference on Signals, Systems and Computers
Abstract
A pre-requisite for the design and performance assessment of future wireless systems is the understanding of the involved propagation processes, and derivation of insightful channel models. In this paper, we present a novel 28 GHz multiple-input multiple-output (MIMO) channel sounder for characterizing the dynamic propagation behavior of the millimeter-wave channel. Based on the switched array principle, our design is capable of measuring 256x128, dual-polarized, directionally resolved channels with a switching rate of approximately 10 us. Unlike previous systems, the per-channel digital processing, complemented with a 2 GHz measurement bandwidth, gives extraordinary angular resolution and sub-nanosecond delay resolution. The short... (More)
A pre-requisite for the design and performance assessment of future wireless systems is the understanding of the involved propagation processes, and derivation of insightful channel models. In this paper, we present a novel 28 GHz multiple-input multiple-output (MIMO) channel sounder for characterizing the dynamic propagation behavior of the millimeter-wave channel. Based on the switched array principle, our design is capable of measuring 256x128, dual-polarized, directionally resolved channels with a switching rate of approximately 10 us. Unlike previous systems, the per-channel digital processing, complemented with a 2 GHz measurement bandwidth, gives extraordinary angular resolution and sub-nanosecond delay resolution. The short measurement time combined with the high phase stability of radio frequency up/down-conversion chains facilitates phase-coherent measurements. This allows for tracking of multipath components over time to investigate the temporal dependencies of channel parameters. With this high resolution look at the channel, we rethink the conventional beliefs around channel sparsity at 28 GHz. Overall, the paper discusses the most important aspects of sounder design, as well as sample results from directional channel measurements. (Less)
Please use this url to cite or link to this publication:
author
organization
publishing date
type
Chapter in Book/Report/Conference proceeding
publication status
in press
subject
keywords
Channel sounding, dynamic channels, millimeter-wave, measurement techniques
host publication
IEEE 53rd Annual Asilomar Conference on Signals, Systems, and Computers (IEEE ASILOMAR)
pages
5 pages
conference name
IEEE 53rd Annual Asilomar Conference on Signals, Systems and Computers
conference location
Palo Alto, United States
conference dates
2019-11-03 - 2019-11-06
language
English
LU publication?
yes
id
700ac230-487e-4c88-9353-fef3355c8e2c
date added to LUP
2019-08-05 12:48:50
date last changed
2019-08-28 15:47:05
@inproceedings{700ac230-487e-4c88-9353-fef3355c8e2c,
  abstract     = {A pre-requisite for the design and performance assessment of future wireless systems is the understanding of the involved propagation processes, and derivation of insightful channel models. In this paper, we present a novel 28 GHz multiple-input multiple-output (MIMO) channel sounder for characterizing the dynamic propagation behavior of the millimeter-wave channel. Based on the switched array principle, our design is capable of measuring 256x128, dual-polarized, directionally resolved channels with a switching rate of approximately 10 us. Unlike previous systems, the per-channel digital processing, complemented with a 2 GHz measurement bandwidth, gives extraordinary angular resolution and sub-nanosecond delay resolution. The short measurement time combined with the high phase stability of radio frequency up/down-conversion chains facilitates phase-coherent measurements. This allows for tracking of multipath components over time to investigate the temporal dependencies of channel parameters. With this high resolution look at the channel, we rethink the conventional beliefs around channel sparsity at 28 GHz. Overall, the paper discusses the most important aspects of sounder design, as well as sample results from directional channel measurements.  },
  author       = {Tataria, Harsh and Bengtsson, Erik L and karlsson, Peter C. and Tufvesson, Fredrik},
  keyword      = {Channel sounding,dynamic channels,millimeter-wave,measurement techniques},
  language     = {eng},
  location     = {Palo Alto, United States},
  month        = {08},
  pages        = {5},
  title        = {(Invited Paper) A Massive 28 GHz Switched Array Sounder for Dynamic Channel Characterization},
  year         = {2019},
}