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Analysis of Scattering in Mobile Radio Channels Based on Clustered Multipath Estimates

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Abstract

This paper presents the results of angle and delay measurements in physically nonstationary radio channels obtained in an outdoor urban environment. The multidimensional estimation data are obtained using a recently developed 3-D high-resolution channel sounder. The estimation results are compared with results obtained from a 3-D deterministic propagation prediction tool. For a better analysis, a hierarchical clustering method is presented that can separate and group the multidimensional estimation data into clusters. Measurements performed at a fixed position as well as along a trajectory are used to characterize the angular dispersion in both azimuth and elevation. The angular dispersion in terms of the rms cluster angular spread in both elevation and azimuth of the different clusters is analyzed over space and time and related to its physical scattering sources. Compared to the measurements, a large number of multipath clusters are missing in the predictions. Furthermore, it is observed from the measurements that different objects cause different angular spread values in azimuth and elevation. The results can be very helpful for the identification, improvement and calibration of deterministic propagation prediction models.

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Acknowledgement

The authors acknowledge the support of TNO Information and Communication Technology and KPN. In particular, the first author is financially supported within the research framework Dutch Research Delta, a research co-operation between KPN, TNO and a large number of Dutch universities. The framework comprises three research themes: Liquid Bandwidth, Transsectoral Innovation and Social Innovation.

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Authors and Affiliations

  1. Eindhoven University of Technology, 5600 MB, Eindhoven, The Netherlands

    Maurice R. J. A. E. Kwakkernaat & Matti H. A. J. Herben

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  1. Maurice R. J. A. E. Kwakkernaat
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  2. Matti H. A. J. Herben
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Correspondence to Maurice R. J. A. E. Kwakkernaat.

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Kwakkernaat, M.R.J.A.E., Herben, M.H.A.J. Analysis of Scattering in Mobile Radio Channels Based on Clustered Multipath Estimates. Int J Wireless Inf Networks 15, 107–116 (2008). https://doi.org/10.1007/s10776-008-0082-9

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  • DOI: https://doi.org/10.1007/s10776-008-0082-9

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