Spatial Separation of Closely-Spaced Users in Measured Massive Multi-User MIMO Channels
Flordelis, Jose LU ; Gao, Xiang LU ; Dahman, Ghassan LU ; Rusek, Fredrik LU ; Edfors, Ove LU
and Tufvesson, Fredrik
LU
(2015)
IEEE International Conference on Communications, ICC 2015
p.1441-1446
- Abstract
- Fully-synchronous measurements of a massive multi-user multiple-input multiple-output (MU-MIMO) radio propagation channel are presented. We evaluate the ability of a massive MIMO system to spatially separate users located close to each other in line-of-sight (LOS) propagation conditions. The system consists of a base-station (BS) antenna array equipped with 64 dual-polarized antenna elements (128 ports) arranged
in a cylindrical configuration, and eight single-antenna users. The users are confined to a five-meter diameter circle and move randomly at pedestrian speeds. The BS antenna array is located on top of a 20 m tall building and has LOS to the users. We examine user separability by studying singular value spread
of... (More) - Fully-synchronous measurements of a massive multi-user multiple-input multiple-output (MU-MIMO) radio propagation channel are presented. We evaluate the ability of a massive MIMO system to spatially separate users located close to each other in line-of-sight (LOS) propagation conditions. The system consists of a base-station (BS) antenna array equipped with 64 dual-polarized antenna elements (128 ports) arranged
in a cylindrical configuration, and eight single-antenna users. The users are confined to a five-meter diameter circle and move randomly at pedestrian speeds. The BS antenna array is located on top of a 20 m tall building and has LOS to the users. We examine user separability by studying singular value spread
of the MU-MIMO channel matrix for several subsets of BS antenna array ports, along with sum-rate capacity and achievable sum-rates with both zero-forcing and matched-filtering linear precoders. We also analyze the performance of the user with the lowest rate. Finally, a comparison between the performance offered by the massive MIMO system and that of a conventional MU-MIMO system is provided. To the best of our knowledge, this is the first report of fully-synchronous dynamic measurements of a massive MIMO system. Our investigation shows that even users located close to each other in LOS propagation conditions can be spatially separated in a massive MIMO system. (Less)
Please use this url to cite or link to this publication:
https://lup.lub.lu.se/record/5154187
- author
- Flordelis, Jose
LU
; Gao, Xiang
LU
; Dahman, Ghassan
LU
; Rusek, Fredrik
LU
; Edfors, Ove
LU
and Tufvesson, Fredrik
LU
- organization
- publishing date
- 2015
- type
- Chapter in Book/Report/Conference proceeding
- publication status
- published
- subject
- keywords
- multi-user multiple-input multiple-output systems, MU-MIMO, massive MIMO, large-scale MIMO, MIMO channel measurements, spatial separation, singular value spread, sum-rate capacity, sum-rate, linear precoder
- host publication
- 2015 IEEE International Conference on Communications (ICC)
- pages
- 1441 - 1446
- publisher
- IEEE - Institute of Electrical and Electronics Engineers Inc.
- conference name
- IEEE International Conference on Communications, ICC 2015
- conference location
- London, United Kingdom
- conference dates
- 2015-06-08 - 2015-06-12
- external identifiers
-
- scopus:84953717299
- language
- English
- LU publication?
- yes
- id
- c2853508-a976-4cb8-b25d-1f37ad514e86 (old id 5154187)
- date added to LUP
- 2016-04-04 12:22:29
- date last changed
- 2024-03-30 18:18:07
@inproceedings{c2853508-a976-4cb8-b25d-1f37ad514e86,
abstract = {{Fully-synchronous measurements of a massive multi-user multiple-input multiple-output (MU-MIMO) radio propagation channel are presented. We evaluate the ability of a massive MIMO system to spatially separate users located close to each other in line-of-sight (LOS) propagation conditions. The system consists of a base-station (BS) antenna array equipped with 64 dual-polarized antenna elements (128 ports) arranged<br/><br>
in a cylindrical configuration, and eight single-antenna users. The users are confined to a five-meter diameter circle and move randomly at pedestrian speeds. The BS antenna array is located on top of a 20 m tall building and has LOS to the users. We examine user separability by studying singular value spread<br/><br>
of the MU-MIMO channel matrix for several subsets of BS antenna array ports, along with sum-rate capacity and achievable sum-rates with both zero-forcing and matched-filtering linear precoders. We also analyze the performance of the user with the lowest rate. Finally, a comparison between the performance offered by the massive MIMO system and that of a conventional MU-MIMO system is provided. To the best of our knowledge, this is the first report of fully-synchronous dynamic measurements of a massive MIMO system. Our investigation shows that even users located close to each other in LOS propagation conditions can be spatially separated in a massive MIMO system.}},
author = {{Flordelis, Jose and Gao, Xiang and Dahman, Ghassan and Rusek, Fredrik and Edfors, Ove and Tufvesson, Fredrik}},
booktitle = {{2015 IEEE International Conference on Communications (ICC)}},
keywords = {{multi-user multiple-input multiple-output systems; MU-MIMO; massive MIMO; large-scale MIMO; MIMO channel measurements; spatial separation; singular value spread; sum-rate capacity; sum-rate; linear precoder}},
language = {{eng}},
pages = {{1441--1446}},
publisher = {{IEEE - Institute of Electrical and Electronics Engineers Inc.}},
title = {{Spatial Separation of Closely-Spaced Users in Measured Massive Multi-User MIMO Channels}},
url = {{https://lup.lub.lu.se/search/files/5990411/5154208.pdf}},
year = {{2015}},
}