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- W2086642708 abstract "Vehicular communication channels are characterized 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 approximately 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." @default.
- W2086642708 created "2016-06-24" @default.
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- W2086642708 date "2014-01-01" @default.
- W2086642708 modified "2023-10-15" @default.
- W2086642708 title "Delay and Doppler Spreads of Nonstationary Vehicular Channels for Safety-Relevant Scenarios" @default.
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- W2086642708 doi "https://doi.org/10.1109/tvt.2013.2271956" @default.
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