Doppler spectrum from moving scatterers in a random environment
| Autor: | Guido Dietl, Gerhard Bauch, Jesper Ødum Nielsen, Jørgen Bach Andersen, Gert Frølund Pedersen |
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| Rok vydání: | 2009 |
| Předmět: |
Physics
Wave propagation Scattering Forward scatter business.industry Applied Mathematics Transmitter user influence indoor propagation small terminal antennas radio channel Spectral line Computer Science Applications Computational physics Non-line-of-sight propagation symbols.namesake symbols Electrical and Electronic Engineering Antenna (radio) Telecommunications business Doppler effect |
| Zdroj: | Andersen, J B, Nielsen, J Ø, Pedersen, G F, Bauch, G & Dietl, G 2009, ' Doppler Spectrum from Moving Scatterers in a Random Environment ', IEEE Transactions on Wireless Communications, vol. 8, no. 6, pp. 3270-3277 . https://doi.org/10.1109/TWC.2009.081088 |
| ISSN: | 1536-1276 |
| Popis: | Udgivelsesdato: June A random non-line-of-sight environment with stationary transmitter and receiver is considered. In such an environment movement of a scatterer will lead to perturbations of the otherwise static channel with a resulting Doppler spectrum. This is quite a general situation in outdoor environments with moving traffic or indoor situations with moving people. Here we study the latter situation in detail with experimental results from a large office environment. A general theory of Doppler spectra is developed. The impact of a scatterer depends on the angular distribution of scattered energy, and uniform as well as sharply peaked distributions are considered in the theory. The Doppler spectra are in all cases sharply peaked at zero frequency due to forward scattering, but the actually measured distribution depends on the degree and type of activity in the environment, as well as the spectrum estimation accuracy. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
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