Polarization Diversity Measurements and Analysis for Antenna Configurations at 1800 MHz

Narayanan, Ram M.; Atanassov, K.; Stoiljković, V.; Kadambi, Govind R.

doi:10.1109/tap.2004.831290

Cited by 26 publications

(12 citation statements)

References 23 publications

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“…On the other hand, MIMO systems do not require perfectly uncorrelated signals to perform near full capacity, and more than two orthogonal polarizations could be used efficiently [8]. Yet, the full potential of true polarization diversity where any polarization state could be employed is not fully addressed in the literature and requires more research [9].…”

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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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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“…It is assumed that the distribution is same for the vertically and horizontally polarized signals. The Laplacian distribution with zero mean proposed in [7] is used and is given as (5) where is the deviation of the power azimuth distribution. Fig.…”

Section: Theoretical Study Of Correlationmentioning

confidence: 99%

“…This correlation has been studied theoretically and results were presented in [2]- [4]. In [5], a test system was used to evaluate the polarization diversity performance of different antenna pairs in Rayleigh and Rician environments. polarized antennas in addition to the direction of arrival (DOA) distribution, the vertical and horizontal gain pattern of the antenna needs to be taken into the consideration [2], [6] to accurately determine the envelope correlation.…”

Section: Introductionmentioning

confidence: 99%

Branch correlation measurements and analysis in an indoor Rayleigh fading channel for polarization diversity using a dual polarized patch antenna

Hajian

Nikookar

Zwan

et al. 2005

IEEE Microw. Wireless Compon. Lett.

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Abstract-Spatial diversity techniques are advantageous if the received signals of the diversity branches are sufficiently uncorrelated. Theoretical study using the power unbalance between the two branches employing Laplacian direction of arrival (DOA) distribution is carried out. It is shown that for low value of cross-polarization power ratio (XPR) the correlation has a negligible effect. In order to validate the theoretical results indoor NLOS measurements were carried out. The measurements were done to study the cross-correlation between two received signals of orthogonal polarization using a dual linear polarized patch antenna. The antenna has been designed, built and measured. The results of the channel measurements are given. It is concluded that received signals with orthogonal polarization in indoor Rayleigh fading channels have no significant envelope correlation.

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“…Spatial diversity systems are established based on the fact that in a multipath fading environment, received signals on the diversity branches decorrelate spatially where the rate of decorrelation increases monotonically with enlarging the multipath angular spread [1]. Polarization diversity based on antennas with different polarization characteristics is another antenna diversity technique and is known to be nearly as effective as spatial diversity [2]- [4]. In a polarization diversity system, correlation between signals of two similar co-located antennas decreases by increasing the angular separation of antennas' polarization vectors such that antennas with orthogonal polarizations are considered as uncorrelated diversity branches [2], [3].…”

Section: Introductionmentioning

confidence: 99%

Combined spatial-polarization correlation function for indoor multipath environments

Dehghanian

Nielsen

2010

2010 7th International Symposium on Wireless Communication Systems

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The combined spatial-polarization correlation function for indoor multipath environments is discussed. An analytical model based on an isotropic receiving antenna and a sphere of scatterers is developed for quantifying signal decorrelation as a function of antennas' spatial and orientation separation. A closed form expression is deduced for the combined spatial-polarization correlation function which is useful for quantifying the potential diversity gain in antenna diversity systems. Finally, an extensive set of measurements were carried out at 1947.5 MHz to verify the theoretical results.

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Polarization Diversity Measurements and Analysis for Antenna Configurations at 1800 MHz

Cited by 26 publications

References 23 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

Branch correlation measurements and analysis in an indoor Rayleigh fading channel for polarization diversity using a dual polarized patch antenna

Combined spatial-polarization correlation function for indoor multipath environments

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