6533b82dfe1ef96bd129162d
RESEARCH PRODUCT
Modelling and Analysis of Non-Stationary Multipath Fading Channels with Time-Variant Angles of Arrival
Matthias PatzoldCarlos A. Gutierrezsubject
Computer scienceAutocorrelation020302 automobile design & engineering020206 networking & telecommunications02 engineering and technologyDelay spreadsymbols.namesakeFading distribution0203 mechanical engineering0202 electrical engineering electronic engineering information engineeringsymbolsRake receiverFadingStatistical physicsDoppler effectMultipath propagationCommunication channelComputer Science::Information Theorydescription
In mobile radio channel modelling, it is generally assumed that the angles of arrival (AOAs) are independent of time. This assumption does in general not agree with real-world channels in which the AOAs vary with the position of a moving receiver. In this paper, we first present a mathematical model for the time-variant AOAs. This model serves as the basis for the development of two non-stationary multipath fading channels models. The statistical properties of both channel models are analysed with emphasis on the time-dependent autocorrelation function (ACF), time-dependent mean Doppler shift, time-dependent Doppler spread, and the Wigner-Ville spectrum. It is shown that these characteristic quantities are greatly influenced by time-variant AOAs. The presented analytical framework provides a new view on the channel characteristics that goes well beyond ultra-short observation intervals over which the channel can be considered as wide-sense stationary. nivå1
| year | journal | country | edition | language |
|---|---|---|---|---|
| 2017-06-01 |