Temporal Analysis of Measured LOS Massive MIMO Channels with Mobility
(2017) 85th IEEE Vehicular Technology Conference, VTC Spring 2017- 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the inherent propagation and processing delay has a critical relationship with the rate of change, as the use of outdated channel information can result in severe detection and precoding inaccuracies.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the inherent propagation and processing delay has a critical relationship with the rate of change, as the use of outdated channel information can result in severe detection and precoding inaccuracies.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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- author
- 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
- organization
- publishing date
- 2017-11-14
- type
- Chapter in Book/Report/Conference proceeding
- publication status
- published
- subject
- keywords
- 5G, Field Trial, Massive MIMO, Mobility, Testbed
- host publication
- 2017 IEEE 85th Vehicular Technology Conference, VTC Spring 2017 - Proceedings
- article number
- 8108215
- publisher
- IEEE - Institute of Electrical and Electronics Engineers Inc.
- conference name
- 85th IEEE Vehicular Technology Conference, VTC Spring 2017
- conference location
- Sydney, Australia
- conference dates
- 2017-06-04 - 2017-06-07
- 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
- 2024-03-18 04:36:40
@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}}, keywords = {{5G; Field Trial; Massive MIMO; Mobility; Testbed}}, language = {{eng}}, month = {{11}}, publisher = {{IEEE - 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}}, doi = {{10.1109/VTCSpring.2017.8108215}}, year = {{2017}}, }