Increasing wireless channel capacity through MIMO systems employing co-located antennas

Konanur, A.; Gosalia, K.; Krishnamurthy, S.H.; Hughes, B.L.; Lazzi, Gianluca

doi:10.1109/tmtt.2005.848105

Cited by 106 publications

(47 citation statements)

References 10 publications

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“…Yet, since at least horizontal and vertical separation distances are required for efficient spatial outdoor diversity in practice, polarization diversity has recently gained attraction. The use of vector antennas which can respond to more than one component and/or polarization states of the EM field through colocation instead of more voluminous spatially separated arrays can provide equivalent channel capacity increase [3]. The slanted polarization diversity combination was found to perform just as good as the spatial polarization diversity with two elements, and commercial systems like GSM and UMTS soon switched to this new technique.…”

mentioning

confidence: 99%

The Role of Polarization Diversity for MIMO Systems Under Rayleigh-Fading Environments

Valenzuela-Valdés

Garcı́a-Fernández

Martinez-Gonzalez

et al. 2006

Antennas Wirel. Propag. Lett.

105

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Abstract-Polarization diversity techniques have not received as much attention as others due to the significant difference in mean signal level between copolarized and cross-polarized branches when one polarization is transmitted. However, multiple-input-multiple-output (MIMO) systems where the multipath fading is only partially correlated could use polarization diversity to provide a high diversity gain. Hence there is a need to fully understand the role of true polarization diversity in such systems. In this letter, progressive (true) polarization diversity performance for 3 3 MIMO systems under Rayleigh-fading environments is evaluated through simulations and measurements. True polarization diversity was found to be as significant as spatial diversity at improving diversity gain, and hence MIMO system capacity.

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mentioning

confidence: 99%

The Role of Polarization Diversity for MIMO Systems Under Rayleigh-Fading Environments

Valenzuela-Valdés

Garcı́a-Fernández

Martinez-Gonzalez

et al. 2006

Antennas Wirel. Propag. Lett.

105

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“…To achieve pattern diversity, the concept of collocated antennas has been introduced [2]. The idea is to co-localize several antennas and make sure to minimize the mutual coupling between them.…”

Section: Introductionmentioning

confidence: 99%

A Wideband Collocated Antennas With Five Reconfigurable Patterns and Low Mutual Coupling

Ghanem¹

2017

PIER M

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Abstract-Wideband collocated antennas for multiple input multiple output (MIMO) systems are proposed. The structure is disposed on two substrate layers. On the first top substrate, a disc monopole is etched. The top of the second substrate contains a tapered slot antenna in a form of a Vivaldi antenna and two reflector elements in the form of half disc. The designed antenna can switch among five radiation patterns which radiate in different directions of space with only two excitation ports. All antennas have a relative bandwidth at least 23%. The antenna elements exhibit a low mutual coupling since they are around −17 dB over the considered bandwidths. This performance is believed because the disc monopole mainly has a broadside radiation while the Vivaldi antenna radiates in end-fire directions. With an overall length of about a half guided wavelength, the proposed structure is believed suitable for applications needing radiation pattern diversity.

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“…These can cause fainting phenomenon of the received signals and thus affect the quality of communications [2]. The fading effects of these attention as a practical method to increase significantly the wireless channel capacity without need for additional power or spectrum [3]. Many investigations have been performed to develop suitable antenna for the MIMO systems [4][5][6].…”

Section: Introductionmentioning

confidence: 99%

Enhanced Isolation Mimo Antenna with DGS Structures for Long Term Evolution Systems

Messaoudene¹,

Belhocine

Aidel

et al. 2015

Review of Computer Engineering Research

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Increasing wireless channel capacity through MIMO systems employing co-located antennas

Cited by 106 publications

References 10 publications

The Role of Polarization Diversity for MIMO Systems Under Rayleigh-Fading Environments

The Role of Polarization Diversity for MIMO Systems Under Rayleigh-Fading Environments

A Wideband Collocated Antennas With Five Reconfigurable Patterns and Low Mutual Coupling

Enhanced Isolation Mimo Antenna with DGS Structures for Long Term Evolution Systems

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