Mutual coupling in multi-element array antennas and its influence on MIMO channel capacity

Fletcher, P.N.; Dean, Mike; Nix, Andrew R

doi:10.1049/el:20030219

Cited by 150 publications

(89 citation statements)

References 3 publications

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“…On the other hand, conflicting views arise on the impact of mutual coupling on capacity performance [13]- [20], with some papers claiming mutual coupling effects to be beneficial for capacity [13], while others either completely disagree [14], [18], [19], or indicate that its benefits apply only to selected cases (e.g. a range of antenna separations) [15], [16].…”

Section: Review Of Array Impedance Matchingmentioning

confidence: 99%

Antenna Matching for Capacity Maximization in Compact MIMO Systems

Lau

Andersen

Molisch

et al. 2006

2006 3rd International Symposium on Wireless Communication Systems

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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.

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Section: Review Of Array Impedance Matchingmentioning

confidence: 99%

Antenna Matching for Capacity Maximization in Compact MIMO Systems

Lau

Andersen

Molisch

et al. 2006

2006 3rd International Symposium on Wireless Communication Systems

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“…Mutual coupling between radiating elements is one source of correlation. Its effect on capacity is studied in [39].…”

Section: F Correlation: Generic Resultsmentioning

confidence: 99%

MIMO Ricean channel capacity: an asymptotic analysis

Lebrun

Faulkner

Shafi³

et al. 2006

IEEE Trans. Wireless Commun.

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Abstract-This paper presents asymptotic bounds and limits for the mean channel capacity of MIMO systems under Ricean channel conditions. It is shown that the mean capacity per dimension decreases as the K factor increases in value and approaches a value equal to that of the underlying scattering channel when the number of antennas are large and the specular matrix has unit rank. The accuracy of the bounds is verified by simulations. In addition, a variety of results for the MIMO Ricean channel are brought together to give an overview of the current knowledge in this area. We also show that the variance of the capacity for a Ricean Channel approaches that of the the scattering channel for large numbers of antennas.

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“…However, it could be easily included by means of a coupling matrix as shown in [14], given the separable matrix model that arise in the definition of as a product of several matrices for any of the diversity scenarios defined.…”

Section: A Diversity Scenariosmentioning

confidence: 99%

Combination of the Three Types of Diversity to Design High-Capacity Compact MIMO Terminals

Pablo-Gonzalez

Sanchez-Fernandez

Rajo‐Iglesias

2014

Antennas Wirel. Propag. Lett.

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Abstract-Multiple-input-multiple-output (MIMO) schemes designed to increase channel capacity face strong limitations when a large number of antennas must be deployed in a terminal due to size constrains. This letter discusses how the different combinations of the three types of diversities-namely spatial, radiation pattern, and polarization diversity-can be used to get an improved capacity in compact terminals. The study compares realistic combinations that overcome the need for a large number of radiating elements in the user terminal.

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Mutual coupling in multi-element array antennas and its influence on MIMO channel capacity

Cited by 150 publications

References 3 publications

Antenna Matching for Capacity Maximization in Compact MIMO Systems

Antenna Matching for Capacity Maximization in Compact MIMO Systems

MIMO Ricean channel capacity: an asymptotic analysis

Combination of the Three Types of Diversity to Design High-Capacity Compact MIMO Terminals

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