Preliminary measurement results from an adaptive antenna array testbed for GSM/UMTS

Mogensen, Preben; Pedersen, Klaus I.; Leth-Espensen, Poul; Fleury, Bernard Henri; Frederiksen, Frank; Olesen, Kim; Larsen, Steen Leth

doi:10.1109/vetec.1997.605826

Cited by 33 publications

(29 citation statements)

References 4 publications

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“…With respect to empirical PDF, it means a unimodal function type. Compared to [20], here the set of measurement results is limited to seven scenarios that are described in [21,[42][43][44][45][46]. Out of all unimodal, empirical PDFs that are included in [20], the measurement data from [47] are not contained in this paper.…”

Section: Measurement Scenariosmentioning

confidence: 99%

“…Reference data are derived from the measurements that have been made in both rural environment [43] as well as urban environment with different density of buildings [21,42,[44][45][46]. The type of propagation environment is determined by the height of the receiving antenna location relative to the mean height of buildings.…”

Section: Measurement Scenariosmentioning

confidence: 99%

“…The type of propagation environment is determined by the height of the receiving antenna location relative to the mean height of buildings. For [42,45,46] and [21] (Aarhus) scenarios, the location height of antennas significantly exceed the mean height of buildings. As a result, the propagation conditions correspond to the typical urban environment type.…”

Section: Measurement Scenariosmentioning

confidence: 99%

See 2 more Smart Citations

Empirical Models of the Azimuthal Reception Angle—Part I: Comparative Analysis of Empirical Models for Different Propagation Environments

Ziółkowski

Kelner

2016

Wireless Pers Commun

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Statistical properties of the reception angle have a significant impact on the choice of the antenna system patterns and decide on the received signal-processing methods. For angle of arrival in azimuth plane, comparative analysis of the empirical models and the approximation error evaluation are the purpose of this paper. Here, the presented analysis is focused on models such as the von Mises, modified Gaussian, modified Laplacian, and modified logistic. For each model, the approximation accuracy is determined with respect to measurement data for seven different propagation scenarios. The measures such as the least-squares error, difference of standard deviations, Kolmogorov-Smirnov statistic, and Cramer-von Mises statistic are used for evaluation of the approximation errors. Comparative analysis for four empirical models, differentiation of propagation environments, multi-criterial evaluation of approximation errors in significant degree fill a gap in the previous analysis presented in the literature. The obtained results show that the empirical models provide a better fit to the measurement data than the geometrical models, and the smallest errors of approximation are for the modified Laplacian and logistic distributions.

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Section: Measurement Scenariosmentioning

confidence: 99%

Section: Measurement Scenariosmentioning

confidence: 99%

Section: Measurement Scenariosmentioning

confidence: 99%

See 1 more Smart Citation

Empirical Models of the Azimuthal Reception Angle—Part I: Comparative Analysis of Empirical Models for Different Propagation Environments

Ziółkowski

Kelner

2016

Wireless Pers Commun

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“…The assessment of the propagation environment's influence on the bearing errors is based on the measurement results of PAS and PDS that are presented in [14][15][16][17]. The described measurement scenarios and the empirical results have been obtained for different propagation environments.…”

Section: Transmission Properties Of Propagation Environmentsmentioning

confidence: 99%

“…In [14,15], the presented results were performed in RA near Bristol. The measurement results that are shown in [16] and [17] were made in Stockholm (Sweden), Aarhus, and Aalborg (Denmark). These environments are TUs.…”

Section: Transmission Properties Of Propagation Environmentsmentioning

confidence: 99%

The Influence Of Propagation Environment On The Accuracy Of Emission Source Bearing

Ziółkowski

Kelner

2015

Metrology and Measurement Systems

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This paper focuses on the radio direction finding (DF) in multipath environments. Based on the measurement results presented in the open literature, the authors analyse the influence of environment transmission properties on the spread of the signal reception angle. Parameters that define these properties are rms delay and angle spreads. For these parameters, the mutual relationship is determined. This relationship is the basis for assessment of the required number of bearings that minimize the influence of the environment on the accuracy of DF procedure. In the presented analysis, the statistical properties of the signal reception angle are approximated by the normal distribution. The number of bearings versus the rms delay spread is presented as the main objective of this paper. In addition, a methodology of the bearings' spatial averaging that provides better estimation of the reception angle is shown.Keywords: DF, methodology of bearing measurement, bearing accuracy, measurements in multipath environment, power azimuth spectrum.

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Antenna Arrays and Space Division Multiple Access

Mogensen

Espensen

Pedersen

et al.

GSM Evolution Towards 3rd Generation Systems

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Preliminary measurement results from an adaptive antenna array testbed for GSM/UMTS

Cited by 33 publications

References 4 publications

Empirical Models of the Azimuthal Reception Angle—Part I: Comparative Analysis of Empirical Models for Different Propagation Environments

Empirical Models of the Azimuthal Reception Angle—Part I: Comparative Analysis of Empirical Models for Different Propagation Environments

The Influence Of Propagation Environment On The Accuracy Of Emission Source Bearing

Antenna Arrays and Space Division Multiple Access

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