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Optimal single-port matching impedance for capacity maximization in compact MIMO arrays

Fei, Yuanyuan ; Fan, Yijia ; Lau, Buon Kiong LU and Thompson, John S. (2008) In IEEE Transactions on Antennas and Propagation 56(11). p.3566-3575
Abstract
A complete MIMO system model with compact arrays at both link ends containing arbitrary matching networks is presented based on a Z-parameter approach. The complete channel matrix including the coupling effect is also presented. Utilizing this system model, the optimum single-port matching impedance for capacity maximization is derived for a 2 × 2 MIMO system with coupling at the receivers only. A closed-form result for the optimum matching impedance in high signal-to-noise ratio scenarios is given and proved to be equal to the input impedance of the receive end. Simulation of ideal dipoles verifies our analytical results and demonstrates the superiority of the optimum matching to other matching conditions in improving MIMO system... (More)
A complete MIMO system model with compact arrays at both link ends containing arbitrary matching networks is presented based on a Z-parameter approach. The complete channel matrix including the coupling effect is also presented. Utilizing this system model, the optimum single-port matching impedance for capacity maximization is derived for a 2 × 2 MIMO system with coupling at the receivers only. A closed-form result for the optimum matching impedance in high signal-to-noise ratio scenarios is given and proved to be equal to the input impedance of the receive end. Simulation of ideal dipoles verifies our analytical results and demonstrates the superiority of the optimum matching to other matching conditions in improving MIMO system performance. Experimental data for monopoles is also presented to further confirm our numerical findings and validate the accuracy of our derivation. (Less)
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author
; ; and
organization
publishing date
type
Contribution to journal
publication status
published
subject
in
IEEE Transactions on Antennas and Propagation
volume
56
issue
11
pages
3566 - 3575
publisher
IEEE - Institute of Electrical and Electronics Engineers Inc.
external identifiers
  • wos:000261364400024
  • scopus:57149125170
ISSN
0018-926X
DOI
10.1109/TAP.2008.2005463
project
Radiosystem: MIMO technology in compact multiband antenna systems (Vinnova/SonyEricsson, BKL)
Radiosystem: NEWCOM (EU, JBA)
language
English
LU publication?
yes
id
0e3c9f8c-bf32-4f45-bf6e-5973075a1944 (old id 1158602)
date added to LUP
2016-04-01 13:45:28
date last changed
2022-04-21 23:26:43
@article{0e3c9f8c-bf32-4f45-bf6e-5973075a1944,
  abstract     = {{A complete MIMO system model with compact arrays at both link ends containing arbitrary matching networks is presented based on a Z-parameter approach. The complete channel matrix including the coupling effect is also presented. Utilizing this system model, the optimum single-port matching impedance for capacity maximization is derived for a 2 × 2 MIMO system with coupling at the receivers only. A closed-form result for the optimum matching impedance in high signal-to-noise ratio scenarios is given and proved to be equal to the input impedance of the receive end. Simulation of ideal dipoles verifies our analytical results and demonstrates the superiority of the optimum matching to other matching conditions in improving MIMO system performance. Experimental data for monopoles is also presented to further confirm our numerical findings and validate the accuracy of our derivation.}},
  author       = {{Fei, Yuanyuan and Fan, Yijia and Lau, Buon Kiong and Thompson, John S.}},
  issn         = {{0018-926X}},
  language     = {{eng}},
  number       = {{11}},
  pages        = {{3566--3575}},
  publisher    = {{IEEE - Institute of Electrical and Electronics Engineers Inc.}},
  series       = {{IEEE Transactions on Antennas and Propagation}},
  title        = {{Optimal single-port matching impedance for capacity maximization in compact MIMO arrays}},
  url          = {{https://lup.lub.lu.se/search/files/45860606/Fei_TAP0710_1039_R2_v1.pdf}},
  doi          = {{10.1109/TAP.2008.2005463}},
  volume       = {{56}},
  year         = {{2008}},
}