Antenna matching for capacity maximization in compact MIMO systems
(2006) 3rd International Symposium on Wireless Communication Systems (ISWCS) p.253-257- Abstract
- As MIMO technology slowly matures, it is finding its way into more wireless applications. However, some important applications, including mobile communications, require compact implementations. One important challenge in miniaturizing MIMO systems for compact terminals is to overcome capacity performance degradation resulting from mutual coupling among closely separated antennas. In this contribution, we begin with a review of the state-of-the-art, with particular emphasis on impedance matching and its impact on capacity. Whereas it has been shown that a multiport extension of the conjugate match is optimum in a reference environment with uniform 3D angular power spectrum, its bandwidth is severely reduced by decreasing antenna separation.... (More)
- As MIMO technology slowly matures, it is finding its way into more wireless applications. However, some important applications, including mobile communications, require compact implementations. One important challenge in miniaturizing MIMO systems for compact terminals is to overcome capacity performance degradation resulting from mutual coupling among closely separated antennas. In this contribution, we begin with a review of the state-of-the-art, with particular emphasis on impedance matching and its impact on capacity. Whereas it has been shown that a multiport extension of the conjugate match is optimum in a reference environment with uniform 3D angular power spectrum, its bandwidth is severely reduced by decreasing antenna separation. On the other hand, noncoupled, individual port matching is inherently simpler to implement and broader in bandwidth, but offers a smaller capacity. Here, we demonstrate that mean capacity can be easily maximized with respect to individual port matching in a given random field. The extent of capacity gains provided by the optimized matching network over existing individual port matching networks strongly depends on the propagation environment. (Less)
Please use this url to cite or link to this publication:
https://lup.lub.lu.se/record/643332
- author
- Lau, Buon Kiong LU ; Bach Andersen, Jørgen ; Molisch, Andreas LU and Kristensson, Gerhard LU
- organization
- publishing date
- 2006
- type
- Chapter in Book/Report/Conference proceeding
- publication status
- published
- subject
- keywords
- compact MIMO systems, multiport extension, port matching, impedance matching, antenna separation, 3D angular power spectrum, antenna matching, mutual coupling, mobile communications, capacity maximization
- host publication
- 3rd International Symposium on Wireless Communication Systems, ISWCS '06
- pages
- 253 - 257
- publisher
- IEEE - Institute of Electrical and Electronics Engineers Inc.
- conference name
- 3rd International Symposium on Wireless Communication Systems (ISWCS)
- conference location
- Valencia, Spain
- conference dates
- 2006-09-06 - 2006-09-08
- external identifiers
-
- wos:000251016900052
- scopus:47249089682
- ISBN
- 978-1-4244-0397-4
- DOI
- 10.1109/ISWCS.2006.4362298
- language
- English
- LU publication?
- yes
- id
- 39831e06-dbe6-43fe-9b35-67efd817c275 (old id 643332)
- date added to LUP
- 2016-04-04 10:58:28
- date last changed
- 2022-04-23 23:52:45
@inproceedings{39831e06-dbe6-43fe-9b35-67efd817c275,
abstract = {{As MIMO technology slowly matures, it is finding its way into more wireless applications. However, some important applications, including mobile communications, require compact implementations. One important challenge in miniaturizing MIMO systems for compact terminals is to overcome capacity performance degradation resulting from mutual coupling among closely separated antennas. In this contribution, we begin with a review of the state-of-the-art, with particular emphasis on impedance matching and its impact on capacity. Whereas it has been shown that a multiport extension of the conjugate match is optimum in a reference environment with uniform 3D angular power spectrum, its bandwidth is severely reduced by decreasing antenna separation. On the other hand, noncoupled, individual port matching is inherently simpler to implement and broader in bandwidth, but offers a smaller capacity. Here, we demonstrate that mean capacity can be easily maximized with respect to individual port matching in a given random field. The extent of capacity gains provided by the optimized matching network over existing individual port matching networks strongly depends on the propagation environment.}},
author = {{Lau, Buon Kiong and Bach Andersen, Jørgen and Molisch, Andreas and Kristensson, Gerhard}},
booktitle = {{3rd International Symposium on Wireless Communication Systems, ISWCS '06}},
isbn = {{978-1-4244-0397-4}},
keywords = {{compact MIMO systems; multiport extension; port matching; impedance matching; antenna separation; 3D angular power spectrum; antenna matching; mutual coupling; mobile communications; capacity maximization}},
language = {{eng}},
pages = {{253--257}},
publisher = {{IEEE - Institute of Electrical and Electronics Engineers Inc.}},
title = {{Antenna matching for capacity maximization in compact MIMO systems}},
url = {{https://lup.lub.lu.se/search/files/45866658/lau_iswcs_2006.pdf}},
doi = {{10.1109/ISWCS.2006.4362298}},
year = {{2006}},
}