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Experimental verification of degrees of freedom for co-located antennas in wireless channels

Tian, Ruiyuan LU and Lau, Buon Kiong LU (2012) In IEEE Transactions on Antennas and Propagation 60(7). p.3416-3423
Abstract
It has been postulated that six co-located orthogonally polarized electrical and magnetic dipoles can offer up to six degrees of freedom (DOFs) in a multipath scattering environment. In other words, a six-fold increase in channel capacity can be achieved in the context of MIMO systems. However, due to the complexity in designing and measuring such a six-port antenna, to our knowledge, no experimental verification has yet been successfully performed. In this paper, the six DOFs hypothesis is experimentally verified at 377MHz. The experiment involves the design and fabrication of two six-port arrays. In particular, one array is made compact with co-located antenna elements enclosed in a small cubic volume of (0.24*wavelength)^3. Using the... (More)
It has been postulated that six co-located orthogonally polarized electrical and magnetic dipoles can offer up to six degrees of freedom (DOFs) in a multipath scattering environment. In other words, a six-fold increase in channel capacity can be achieved in the context of MIMO systems. However, due to the complexity in designing and measuring such a six-port antenna, to our knowledge, no experimental verification has yet been successfully performed. In this paper, the six DOFs hypothesis is experimentally verified at 377MHz. The experiment involves the design and fabrication of two six-port arrays. In particular, one array is made compact with co-located antenna elements enclosed in a small cubic volume of (0.24*wavelength)^3. Using the two arrays, MIMO channel measurements are performed in a RF shielded laboratory in order to measure a multipath scattering environment. Analysis on eigenvalues of the measured channel shows that six DOFs are attained due to the orthogonality in radiation patterns of the two arrays. (Less)
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author
organization
publishing date
type
Contribution to journal
publication status
published
subject
in
IEEE Transactions on Antennas and Propagation
volume
60
issue
7
pages
3416 - 3423
publisher
IEEE--Institute of Electrical and Electronics Engineers Inc.
external identifiers
  • wos:000306138900037
  • scopus:84863641845
ISSN
0018-926X
DOI
10.1109/TAP.2012.2196934
project
Radiosystem: MIMO technology in compact multiband antenna systems (Vinnova/SonyEricsson, BKL)
Radiosystem: Fundamental Limits of Compact MIMO Systems (VR, BKL)
language
English
LU publication?
yes
id
1f6441b2-31cc-40c5-b1ad-0b5142869128 (old id 2301632)
date added to LUP
2012-01-25 13:34:52
date last changed
2017-07-23 04:04:06
@article{1f6441b2-31cc-40c5-b1ad-0b5142869128,
  abstract     = {It has been postulated that six co-located orthogonally polarized electrical and magnetic dipoles can offer up to six degrees of freedom (DOFs) in a multipath scattering environment. In other words, a six-fold increase in channel capacity can be achieved in the context of MIMO systems. However, due to the complexity in designing and measuring such a six-port antenna, to our knowledge, no experimental verification has yet been successfully performed. In this paper, the six DOFs hypothesis is experimentally verified at 377MHz. The experiment involves the design and fabrication of two six-port arrays. In particular, one array is made compact with co-located antenna elements enclosed in a small cubic volume of (0.24*wavelength)^3. Using the two arrays, MIMO channel measurements are performed in a RF shielded laboratory in order to measure a multipath scattering environment. Analysis on eigenvalues of the measured channel shows that six DOFs are attained due to the orthogonality in radiation patterns of the two arrays.},
  author       = {Tian, Ruiyuan and Lau, Buon Kiong},
  issn         = {0018-926X},
  language     = {eng},
  number       = {7},
  pages        = {3416--3423},
  publisher    = {IEEE--Institute of Electrical and Electronics Engineers Inc.},
  series       = {IEEE Transactions on Antennas and Propagation},
  title        = {Experimental verification of degrees of freedom for co-located antennas in wireless channels},
  url          = {http://dx.doi.org/10.1109/TAP.2012.2196934},
  volume       = {60},
  year         = {2012},
}