Advanced

Measurement of keyhole effect in a wireless multiple-input multiple-output (MIMO) channel

Almers, Peter LU ; Tufvesson, Fredrik LU and Molisch, Andreas LU (2003) In IEEE Communications Letters 7(8). p.373-375
Abstract
It has been predicted theoretically that for some environments, the capacity of wireless multiple-input multiple-output systems can become very low even for uncorrelated signals; this effect has been termed "keyhole" or "pinhole." In this letter, We present the (to our knowledge) first measurement of this effect. The measurements are done in a controlled indoor environment, with transmitter and receiver in two adjacent rooms. One of the rooms is shielded, and propagation to, the other room can occur only through a hole or a waveguide in the wall. We find that only the waveguide leads to an unambiguous keyhole, while a hole of the same size still allows multimodal propagation. Measurement of amplitude statistics also confirm theoretical... (More)
It has been predicted theoretically that for some environments, the capacity of wireless multiple-input multiple-output systems can become very low even for uncorrelated signals; this effect has been termed "keyhole" or "pinhole." In this letter, We present the (to our knowledge) first measurement of this effect. The measurements are done in a controlled indoor environment, with transmitter and receiver in two adjacent rooms. One of the rooms is shielded, and propagation to, the other room can occur only through a hole or a waveguide in the wall. We find that only the waveguide leads to an unambiguous keyhole, while a hole of the same size still allows multimodal propagation. Measurement of amplitude statistics also confirm theoretical predictions. (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
eigenvalues, double complex Gaussian, keyhole, multiple-input multiple-output (MIMO), measurements
in
IEEE Communications Letters
volume
7
issue
8
pages
373 - 375
publisher
IEEE--Institute of Electrical and Electronics Engineers Inc.
external identifiers
  • wos:000184670800009
  • scopus:0042388435
ISSN
1089-7798
DOI
language
English
LU publication?
yes
id
0c0c3fcc-c7c3-4c2f-93f1-fa7027980409 (old id 303930)
date added to LUP
2007-08-22 09:54:41
date last changed
2018-05-29 09:49:36
@article{0c0c3fcc-c7c3-4c2f-93f1-fa7027980409,
  abstract     = {It has been predicted theoretically that for some environments, the capacity of wireless multiple-input multiple-output systems can become very low even for uncorrelated signals; this effect has been termed "keyhole" or "pinhole." In this letter, We present the (to our knowledge) first measurement of this effect. The measurements are done in a controlled indoor environment, with transmitter and receiver in two adjacent rooms. One of the rooms is shielded, and propagation to, the other room can occur only through a hole or a waveguide in the wall. We find that only the waveguide leads to an unambiguous keyhole, while a hole of the same size still allows multimodal propagation. Measurement of amplitude statistics also confirm theoretical predictions.},
  author       = {Almers, Peter and Tufvesson, Fredrik and Molisch, Andreas},
  issn         = {1089-7798},
  keyword      = {eigenvalues,double complex Gaussian,keyhole,multiple-input multiple-output (MIMO),measurements},
  language     = {eng},
  number       = {8},
  pages        = {373--375},
  publisher    = {IEEE--Institute of Electrical and Electronics Engineers Inc.},
  series       = {IEEE Communications Letters},
  title        = {Measurement of keyhole effect in a wireless multiple-input multiple-output (MIMO) channel},
  url          = {http://dx.doi.org/},
  volume       = {7},
  year         = {2003},
}