Naslov
Effects of Bandwidth on Estimation of UWB Channel Parameters

Autori
Čoko, Duje ; Blažević, Zoran ; Marinović, Ivan

Vrsta, podvrsta i kategorija rada
Poglavlja u knjigama, znanstveni

Knjiga
Ultra Wideband Communications: Novel Trends : Antennas and Propagation

Urednik/ci
Mohammad A. Matin

Izdavač
IntechOpen

Grad
Rijeka

Godina
2011

Raspon stranica
97-116

ISBN
978-953-307-452-8

Ključne riječi
ultra wideband ; bandwidth ; path loss ; delay spread ; channel parameters

Sažetak
The subject of this chapter is to investigate the effect of bandwidth on a short range indoor UWB channel performance. This research is based on a measurement campaign performed on a wooden desk surface placed in an office room at our faculty building. A vector network analyzer (VNA) is used to sweep the 1 GHz, 2 GHz, 5 GHz and 7.5 GHz bandwidths centered at 6.85 GHz, obtaining the frequency response of the channel. Using the VNA time domain capability we obtain the channel impulse responses. This is equivalent to sounding the channel with frequency chirp pulses equal in duration to the inverse of the frequency bandwidth. In other words, a narrower bandwidth results in a wider pulse in time domain. Although the measurements are performed in same environment for all bandwidths, it is expected that an UWB channel itself would not be equally perceived by different pulse widths. A wider system bandwidth results in shorter pulses, which in turn account for finer temporal and spatial resolution. In this way more multipath components can be resolved and pulses overlap in a lesser extent.

Izvorni jezik
Engleski

Znanstvena područja
Elektrotehnika

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