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Temporal Analysis of Measured LOS Massive MIMO Channels with Mobility

Harris, Paul; Malkowsky, Steffen LU ; Vieira, Joao LU ; Tufvesson, Fredrik LU ; Hasan, Wael Boukley; Liu, Liang LU ; Beach, Mark; Armour, Simon and Edfors, Ove LU (2017) 85th IEEE Vehicular Technology Conference, VTC Spring 2017 In 2017 IEEE 85th Vehicular Technology Conference, VTC Spring 2017 - Proceedings
Abstract

The first measured results for massive multiple-input, multiple-output (MIMO) performance in a line-of-sight (LOS) scenario with moderate mobility are presented, with 8 users served by a 100 antenna base Station (BS) at 3.7 GHz. When such a large number of channels dynamically change, the inherent propagation and processing delay has a critical relationship with the rate of change, as the use of outdated channel information can result in severe detection and precoding inaccuracies. For the downlink (DL) in particular, a time division duplex (TDD) configuration synonymous with massive MIMO deployments could mean only the uplink (UL) is usable in extreme cases. Therefore, it is of great interest to investigate the impact of mobility on... (More)

The first measured results for massive multiple-input, multiple-output (MIMO) performance in a line-of-sight (LOS) scenario with moderate mobility are presented, with 8 users served by a 100 antenna base Station (BS) at 3.7 GHz. When such a large number of channels dynamically change, the inherent propagation and processing delay has a critical relationship with the rate of change, as the use of outdated channel information can result in severe detection and precoding inaccuracies. For the downlink (DL) in particular, a time division duplex (TDD) configuration synonymous with massive MIMO deployments could mean only the uplink (UL) is usable in extreme cases. Therefore, it is of great interest to investigate the impact of mobility on massive MIMO performance and consider ways to combat the potential limitations. In a mobile scenario with moving cars and pedestrians, the correlation of the MIMO channel vector over time is inspected for vehicles moving up to 29km/h. For a 100 antenna system, it is found that the channel state information (CSI) update rate requirement may increase by 7 times when compared to an 8 antenna system, whilst the power control update rate could be decreased by at least 5 times relative to a single antenna system.

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Please use this url to cite or link to this publication:
author
organization
publishing date
type
Chapter in Book/Report/Conference proceeding
publication status
published
subject
keywords
5G, Field Trial, Massive MIMO, Mobility, Testbed
in
2017 IEEE 85th Vehicular Technology Conference, VTC Spring 2017 - Proceedings
publisher
Institute of Electrical and Electronics Engineers Inc.
conference name
85th IEEE Vehicular Technology Conference, VTC Spring 2017
external identifiers
  • scopus:85040627827
ISBN
9781509059324
DOI
10.1109/VTCSpring.2017.8108215
language
English
LU publication?
yes
id
95c72545-7696-4ea3-b55e-167e6eab2c69
date added to LUP
2018-01-31 07:25:18
date last changed
2018-01-31 07:25:18
@inproceedings{95c72545-7696-4ea3-b55e-167e6eab2c69,
  abstract     = {<p>The first measured results for massive multiple-input, multiple-output (MIMO) performance in a line-of-sight (LOS) scenario with moderate mobility are presented, with 8 users served by a 100 antenna base Station (BS) at 3.7 GHz. When such a large number of channels dynamically change, the inherent propagation and processing delay has a critical relationship with the rate of change, as the use of outdated channel information can result in severe detection and precoding inaccuracies. For the downlink (DL) in particular, a time division duplex (TDD) configuration synonymous with massive MIMO deployments could mean only the uplink (UL) is usable in extreme cases. Therefore, it is of great interest to investigate the impact of mobility on massive MIMO performance and consider ways to combat the potential limitations. In a mobile scenario with moving cars and pedestrians, the correlation of the MIMO channel vector over time is inspected for vehicles moving up to 29km/h. For a 100 antenna system, it is found that the channel state information (CSI) update rate requirement may increase by 7 times when compared to an 8 antenna system, whilst the power control update rate could be decreased by at least 5 times relative to a single antenna system.</p>},
  author       = {Harris, Paul and Malkowsky, Steffen and Vieira, Joao and Tufvesson, Fredrik and Hasan, Wael Boukley and Liu, Liang and Beach, Mark and Armour, Simon and Edfors, Ove},
  booktitle    = {2017 IEEE 85th Vehicular Technology Conference, VTC Spring 2017 - Proceedings},
  isbn         = {9781509059324},
  keyword      = {5G,Field Trial,Massive MIMO,Mobility,Testbed},
  language     = {eng},
  month        = {11},
  publisher    = {Institute of Electrical and Electronics Engineers Inc.},
  title        = {Temporal Analysis of Measured LOS Massive MIMO Channels with Mobility},
  url          = {http://dx.doi.org/10.1109/VTCSpring.2017.8108215},
  year         = {2017},
}