On the Capacity of Densely Packed Arrays with Mutual Coupling and Correlated Noise

On the Capacity of Densely Packed Arrays with Mutual Coupling and Correlated Noise

Capacity of a wireless link can be enhanced by increasing the number of receive antennas. However, imposed receiver physical size constraints necessitate that the antenna elements be in close proximity, which typically reduces the overall link capacity of the wireless channel. Counterintuitively, un...

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Main Authors: Vahid Dehghanian, John Nielsen
Format: Article
Language:English
Published: Hindawi Limited 2015-01-01
Series:International Journal of Antennas and Propagation
Online Access:http://dx.doi.org/10.1155/2015/143759
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spelling doaj-002c2bb6d0c849158225570d01814c302020-11-24T22:44:53ZengHindawi LimitedInternational Journal of Antennas and Propagation1687-58691687-58772015-01-01201510.1155/2015/143759143759On the Capacity of Densely Packed Arrays with Mutual Coupling and Correlated NoiseVahid Dehghanian0John Nielsen1Electrical and Computer Engineering Department, University of Calgary, Calgary, AB, T2N 1N4, CanadaElectrical and Computer Engineering Department, University of Calgary, Calgary, AB, T2N 1N4, CanadaCapacity of a wireless link can be enhanced by increasing the number of receive antennas. However, imposed receiver physical size constraints necessitate that the antenna elements be in close proximity, which typically reduces the overall link capacity of the wireless channel. Counterintuitively, under certain conditions the capacity of the overall link can be enhanced by decreasing antenna spacings. The focus of this paper is that of identifying the fundamental mechanisms and the conditions that give rise to this excess capacity. Closed-form expressions that directly quantify this capacity gain are derived based on a representative circuit theoretic model. Interesting insights are developed about the impact of different noise and interference sources and the limiting effect of heat losses in the antenna system. The capacity analysis is subsequently generalized to encompass the effect of antenna current deformation and load mismatch due to mutual coupling, based on the standard Method of Moments (MoM) analysis, demonstrating similar capacity enhancement behavior as predicted by the closed-form expressions.http://dx.doi.org/10.1155/2015/143759
collection DOAJ
language English
format Article
sources DOAJ
author Vahid Dehghanian
John Nielsen
spellingShingle Vahid Dehghanian
John Nielsen
On the Capacity of Densely Packed Arrays with Mutual Coupling and Correlated Noise
International Journal of Antennas and Propagation
author_facet Vahid Dehghanian
John Nielsen
author_sort Vahid Dehghanian
title On the Capacity of Densely Packed Arrays with Mutual Coupling and Correlated Noise
title_short On the Capacity of Densely Packed Arrays with Mutual Coupling and Correlated Noise
title_full On the Capacity of Densely Packed Arrays with Mutual Coupling and Correlated Noise
title_fullStr On the Capacity of Densely Packed Arrays with Mutual Coupling and Correlated Noise
title_full_unstemmed On the Capacity of Densely Packed Arrays with Mutual Coupling and Correlated Noise
title_sort on the capacity of densely packed arrays with mutual coupling and correlated noise
publisher Hindawi Limited
series International Journal of Antennas and Propagation
issn 1687-5869
1687-5877
publishDate 2015-01-01
description Capacity of a wireless link can be enhanced by increasing the number of receive antennas. However, imposed receiver physical size constraints necessitate that the antenna elements be in close proximity, which typically reduces the overall link capacity of the wireless channel. Counterintuitively, under certain conditions the capacity of the overall link can be enhanced by decreasing antenna spacings. The focus of this paper is that of identifying the fundamental mechanisms and the conditions that give rise to this excess capacity. Closed-form expressions that directly quantify this capacity gain are derived based on a representative circuit theoretic model. Interesting insights are developed about the impact of different noise and interference sources and the limiting effect of heat losses in the antenna system. The capacity analysis is subsequently generalized to encompass the effect of antenna current deformation and load mismatch due to mutual coupling, based on the standard Method of Moments (MoM) analysis, demonstrating similar capacity enhancement behavior as predicted by the closed-form expressions.
url http://dx.doi.org/10.1155/2015/143759
work_keys_str_mv AT vahiddehghanian onthecapacityofdenselypackedarrayswithmutualcouplingandcorrelatednoise
AT johnnielsen onthecapacityofdenselypackedarrayswithmutualcouplingandcorrelatednoise
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