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Efficient experimental evaluation of a MIMO handset with user influence

Harrysson, Fredrik LU ; Medbo, Jonas; Molisch, Andreas LU ; Johansson, Anders J LU and Tufvesson, Fredrik LU (2010) In IEEE Transactions on Wireless Communications 9(2). p.853-863
Abstract
The immediate environment of handset antennas,

including the casings and the users holding the handsets, has a

strong impact on the radio channel in mobile communication. In

this paper we investigate a composite channel method that synthetically

combines double-directional measurements of the userless

propagation channel with measured super-antenna patterns,

i.e., patterns of the combined antenna-casing-user arrangement.

We experimentally evaluate the method by comparing results

(power, capacity, and eigenvalue distribution) obtained from

this composite method with direct measurements in the same

environment. The measurements were done in two static 8... (More)
The immediate environment of handset antennas,

including the casings and the users holding the handsets, has a

strong impact on the radio channel in mobile communication. In

this paper we investigate a composite channel method that synthetically

combines double-directional measurements of the userless

propagation channel with measured super-antenna patterns,

i.e., patterns of the combined antenna-casing-user arrangement.

We experimentally evaluate the method by comparing results

(power, capacity, and eigenvalue distribution) obtained from

this composite method with direct measurements in the same

environment. The measurements were done in two static 8 × 4

MIMO scenarios at 2.6 GHz, with the user indoors and the base

station located outdoors and indoors, respectively. A realistic user

phantom together with a “smart-phone” handset mock-up with

four antenna elements was used, and different configurations and

orientations were tested. The method gives statistical distributions

of the MIMO eigenvalues, that are close to the measured. By

using the composite method, we found that the user, apart from

introducing hand and body loss that mainly decreases the SNR of

the channel, slightly increases the correlation between the fading

at the antenna elements. (Less)
Please use this url to cite or link to this publication:
author
organization
publishing date
type
Contribution to journal
publication status
published
subject
keywords
channel measurement, Mobile communication, channel model, user phantom, multiple-input multiple-output (MIMO)
in
IEEE Transactions on Wireless Communications
volume
9
issue
2
pages
853 - 863
publisher
IEEE--Institute of Electrical and Electronics Engineers Inc.
external identifiers
  • wos:000274383100044
  • scopus:76949101959
ISSN
1536-1276
DOI
10.1109/TWC.2010.02.090588
language
English
LU publication?
yes
id
97c5d07e-c0c7-40a4-b2e7-50e1802c25aa (old id 1389299)
date added to LUP
2009-04-23 11:25:49
date last changed
2018-05-29 12:06:26
@article{97c5d07e-c0c7-40a4-b2e7-50e1802c25aa,
  abstract     = {The immediate environment of handset antennas,<br/><br>
including the casings and the users holding the handsets, has a<br/><br>
strong impact on the radio channel in mobile communication. In<br/><br>
this paper we investigate a composite channel method that synthetically<br/><br>
combines double-directional measurements of the userless<br/><br>
propagation channel with measured super-antenna patterns,<br/><br>
i.e., patterns of the combined antenna-casing-user arrangement.<br/><br>
We experimentally evaluate the method by comparing results<br/><br>
(power, capacity, and eigenvalue distribution) obtained from<br/><br>
this composite method with direct measurements in the same<br/><br>
environment. The measurements were done in two static 8 × 4<br/><br>
MIMO scenarios at 2.6 GHz, with the user indoors and the base<br/><br>
station located outdoors and indoors, respectively. A realistic user<br/><br>
phantom together with a “smart-phone” handset mock-up with<br/><br>
four antenna elements was used, and different configurations and<br/><br>
orientations were tested. The method gives statistical distributions<br/><br>
of the MIMO eigenvalues, that are close to the measured. By<br/><br>
using the composite method, we found that the user, apart from<br/><br>
introducing hand and body loss that mainly decreases the SNR of<br/><br>
the channel, slightly increases the correlation between the fading<br/><br>
at the antenna elements.},
  author       = {Harrysson, Fredrik and Medbo, Jonas and Molisch, Andreas and Johansson, Anders J and Tufvesson, Fredrik},
  issn         = {1536-1276},
  keyword      = {channel
measurement,Mobile communication,channel model,user phantom,multiple-input multiple-output
(MIMO)},
  language     = {eng},
  number       = {2},
  pages        = {853--863},
  publisher    = {IEEE--Institute of Electrical and Electronics Engineers Inc.},
  series       = {IEEE Transactions on Wireless Communications},
  title        = {Efficient experimental evaluation of a MIMO handset with user influence},
  url          = {http://dx.doi.org/10.1109/TWC.2010.02.090588},
  volume       = {9},
  year         = {2010},
}