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Experimental Evaluation of the Effect of BS Antenna Inter-Element Spacing on MU-MIMO Separation

Dahman, Ghassan LU ; Flordelis, Jose LU and Tufvesson, Fredrik LU (2015) IEEE ICC 2015 - Wireless Communications Symposium In IEEE International Conference on Communications 2015-September.
Abstract
In this paper, multiple-input multiple-output (MIMO) channel measurements in an outdoor micro-cell environment are used to study the effect of base-station (BS) inter-element spacing on multi-user MIMO signal separation. Users with two dual-polarized patch antennas at the mobile station (MS), and four equally-spaced dual-polarized patch antennas at the BS are considered. At the BS, the inter-element spacing (i.e., the spacing between the four dual-polarized patch antennas), is varied from half a wavelength to 8 m. For each BS inter-element spacing, the 4×8 MIMO channels are used to evaluate the system's capability separating closely located users. This evaluation is done by means of the correlation matrix distance metric (between each pair... (More)
In this paper, multiple-input multiple-output (MIMO) channel measurements in an outdoor micro-cell environment are used to study the effect of base-station (BS) inter-element spacing on multi-user MIMO signal separation. Users with two dual-polarized patch antennas at the mobile station (MS), and four equally-spaced dual-polarized patch antennas at the BS are considered. At the BS, the inter-element spacing (i.e., the spacing between the four dual-polarized patch antennas), is varied from half a wavelength to 8 m. For each BS inter-element spacing, the 4×8 MIMO channels are used to evaluate the system's capability separating closely located users. This evaluation is done by means of the correlation matrix distance metric (between each pair of closely located users) and the sum-rate capacity of the system (when 8 equally-spaced closely located users are served simultaneously). It is found that the system is capable of separating closely located users as long as the distance between them and the BS is less than the Fraunhofer distance associated with the BS antenna array. In the measured environment, for both LOS and NLOS propagation conditions, users located as close as 0.5 m from each other, having the same orientation, are separated successfully in the multi-user MIMO sense. (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
published
subject
keywords
Multi-user MIMO separation, muti-link channel measurements, users spatial separation, multi-user MIMO
in
IEEE International Conference on Communications
volume
2015-September
publisher
IEEE--Institute of Electrical and Electronics Engineers Inc.
conference name
IEEE ICC 2015 - Wireless Communications Symposium
external identifiers
  • Scopus:84953750431
DOI
10.1109/ICC.2015.7248567
language
English
LU publication?
yes
id
d4a3804f-38cd-40db-92c4-c758671c1cd4 (old id 5218975)
date added to LUP
2015-03-31 11:01:14
date last changed
2016-11-20 04:27:12
@misc{d4a3804f-38cd-40db-92c4-c758671c1cd4,
  abstract     = {In this paper, multiple-input multiple-output (MIMO) channel measurements in an outdoor micro-cell environment are used to study the effect of base-station (BS) inter-element spacing on multi-user MIMO signal separation. Users with two dual-polarized patch antennas at the mobile station (MS), and four equally-spaced dual-polarized patch antennas at the BS are considered. At the BS, the inter-element spacing (i.e., the spacing between the four dual-polarized patch antennas), is varied from half a wavelength to 8 m. For each BS inter-element spacing, the 4×8 MIMO channels are used to evaluate the system's capability separating closely located users. This evaluation is done by means of the correlation matrix distance metric (between each pair of closely located users) and the sum-rate capacity of the system (when 8 equally-spaced closely located users are served simultaneously). It is found that the system is capable of separating closely located users as long as the distance between them and the BS is less than the Fraunhofer distance associated with the BS antenna array. In the measured environment, for both LOS and NLOS propagation conditions, users located as close as 0.5 m from each other, having the same orientation, are separated successfully in the multi-user MIMO sense.},
  author       = {Dahman, Ghassan and Flordelis, Jose and Tufvesson, Fredrik},
  keyword      = {Multi-user MIMO separation,muti-link channel measurements,users spatial separation,multi-user MIMO},
  language     = {eng},
  month        = {09},
  publisher    = {ARRAY(0xb5b1df0)},
  series       = {IEEE International Conference on Communications},
  title        = {Experimental Evaluation of the Effect of BS Antenna Inter-Element Spacing on MU-MIMO Separation},
  url          = {http://dx.doi.org/10.1109/ICC.2015.7248567},
  volume       = {2015-September},
  year         = {2015},
}