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Publications in Scientific Journals:

L. Bernadó, T. Zemen, F. Tufvesson, A. Molisch, C. Mecklenbräuker:
"Delay and Doppler Spreads of Non-Stationary Vehicular Channels for Safety Relevant Scenarios";
IEEE Transactions on Vehicular Technology, 63 (2014), 1; 82 - 93.



English abstract:
Vehicular communication channels are character- ized by a non-stationary time- and frequency-selective fading process due to rapid changes in the environment. The non- stationary fading process can be characterized by assuming local stationarity for a region with finite extent in time and frequency. For this finite region the wide-sense stationarity and uncorrelated-scattering (WSSUS) assumption holds approx- imately and we are able to calculate a time and frequency dependent local scattering function (LSF). In this paper, we estimate the LSF from a large set of measurements collected in the DRIVEWAY´09 measurement campaign, which focuses on scenarios for intelligent transportation systems. We then obtain the time-frequency-varying power delay profile (PDP) and the time-frequency-varying Doppler power spectral density (DSD) from the LSF. Based on the PDP and the DSD, we analyze the time-frequency-varying root mean square (RMS) delay spread and the RMS Doppler spread. We show that the distribution of these channel parameters follows a bi-modal Gaussian mixture distribution. High RMS delay spread values are observed in situations with rich scattering, while high RMS Doppler spreads are obtained in drive-by scenarios.


"Official" electronic version of the publication (accessed through its Digital Object Identifier - DOI)
http://dx.doi.org/10.1109/TVT.2013.2271956



Related Projects:
Project Head Christoph Mecklenbräuker:
Christian Doppler Lab "Funktechnologien für nachhaltige Mobilität"


Created from the Publication Database of the Vienna University of Technology.