Title :
Effect of radio bandwidth on multipath clustering
Author :
Chang, Wei-Ju ; Tarng, J.H.
Author_Institution :
Dept. of Commun. Eng., Nat. Chiao Tung Univ., Hsin-Chu, Taiwan
Abstract :
Detailed knowledge of time dispersion characteristics of radio multipath propagation channel is essential for successful design of ultra-wideband (UWB) systems. The multipath-clustering phenomenon, which is caused by the fact that scatterers tend to group together, may become one of the dominant factors affecting the delay spread especially in the long delay situation. In this paper, a method based on Turin´s Δ-K model is proposed to investigate and estimate the effect of radio bandwidth on the multipath clustering. It is found that the signal of larger bandwidth will observe stronger multipath clustering phenomenon because more paths can be resolved due to a finer time resolution. Our finding has been validated by the measurement result of 1.95 GHz radio propagation in metropolitan and suburban areas. It is also proposed that the Δ-K process of a wider-bandwidth signal can determine that of a narrower-bandwidth signal.
Keywords :
UHF radio propagation; broadband networks; delays; multipath channels; radiocommunication; Δ-K process; 1.95 GHz; delay spread; multipath clustering; radio bandwidth; radio multipath propagation channel; scatterers; time dispersion characteristics; ultra-wideband system; Area measurement; Bandwidth; Delay; Multipath channels; Physical layer; Radio propagation; Scattering; Signal processing; Signal resolution; Ultra wideband technology;
Conference_Titel :
Vehicular Technology Conference, 2003. VTC 2003-Spring. The 57th IEEE Semiannual
Print_ISBN :
0-7803-7757-5
DOI :
10.1109/VETECS.2003.1207790
