Title :
FDTD Characterization of UWB Indoor Radio Channel Including Frequency Dependent Antenna Directivities
Author :
Zhao, Yan ; Hao, Yang ; Parini, Clive
Author_Institution :
Univ. of London
fDate :
6/29/1905 12:00:00 AM
Abstract :
This letter presents a modeling of ultrawideband (UWB) indoor radio channel using the finite-difference time-domain (FDTD) method. By dividing the frequency band (3-11 GHz) into eight subbands, the conventional FDTD method is applied to calculate the channel impulse responses (CIRs). At the centre frequency of each subband, measured frequency dependent dielectric constant/loss factor of different indoor materials are used and antenna patterns are taken into account by applying the equivalence principle with the total-field/scattered-field approach. Radio channel modeling results show that the base station antenna pattern variations at different frequencies can considerably influence the channel behavior in a UWB indoor environment
Keywords :
antenna radiation patterns; electromagnetic wave scattering; finite difference time-domain analysis; indoor radio; ultra wideband antennas; ultra wideband communication; wireless channels; FDTD characterization; UWB indoor radio channel; antenna patterns; channel impulse responses; dielectric constant; finite-difference time-domain method; frequency dependent antenna directivities; scattered-field approach; ultrawideband indoor radio channel; Antenna measurements; Dielectric loss measurement; Dielectric measurements; Finite difference methods; Frequency conversion; Frequency dependence; Indoor radio communication; Time domain analysis; Ultra wideband antennas; Ultra wideband technology; Finite-difference time-domain (FDTD); radio propagation; ray tracing (RT); ultrawideband (UWB); uniform geometrical theory of diffraction (UTD);
Journal_Title :
Antennas and Wireless Propagation Letters, IEEE
DOI :
10.1109/LAWP.2007.891963
