The (in-) validity of the WSSUS assumption in vehicular radio channels
Author
Summary, in English
The assumption of wide-sense-stationarity (WSS) and uncorrelated scattering (US) of wireless propagation channels is widespread for the design and analysis of wireless propagation channels. However, the assumption is only valid within a limited range. In this paper, we investigate the extension of this range not only in time (WSS), but also in frequency (US), for measured vehicular propagation channels. We do this by using the collinearity of the local scattering function, which is a bounded spectral distance metric, and thus allows us to set an indicative threshold, which in turn enables a WSS and a US test. We prove that the fading process in vehicular communications is strongly non-WSS, which agrees with results previously reported in the literature. Furthermore, for the first time (to the authors' knowledge), we show their non-US behavior as well, mainly in scenarios with rich scattering. The dimensions of the minimum stationarity region are on the order of 40 ms in time and 40MHz in frequency.
Department/s
Publishing year
2012
Language
English
Pages
1757-1762
Publication/Series
[Host publication title missing]
Document type
Conference paper
Publisher
IEEE - Institute of Electrical and Electronics Engineers Inc.
Topic
- Electrical Engineering, Electronic Engineering, Information Engineering
Conference name
IEEE International Symposium on Personal Indoor and Mobile Radio Communications (PIMRC), 2012
Conference date
2012-09-09 - 2012-09-12
Conference place
Sydney, Australia
Status
Published
Research group
- Radio Systems
ISBN/ISSN/Other
- ISSN: 2166-9589
- ISSN: 2166-9570
- ISBN: 978-1-4673-2568-4