Title :
Study of buildings and antenna directivity effects on LMDS systems using a modified ray tracing algorithm
Author :
Zare, Hossein ; Nezafat, Mahdi ; Mohammadi, Abbas
Author_Institution :
Dept. of Electr. Eng., Amirkabir Univ. of Technol., Tehran, Iran
fDate :
6/24/1905 12:00:00 AM
Abstract :
In this work we develop a computer-aided tool for propagation prediction of wireless channels based on a modified shooting and bouncing ray (SBR) method that is combined with GTD/UTD (geometrical theory of diffraction/uniform theory of diffraction). Our simulation results show that the new algorithm reduces the computation time while the accuracy of the algorithm is preserved. In this paper we also investigate the effects of receiver antenna height and antenna beamwidth on path loss and channel parameters for LMDS systems.
Keywords :
broadband networks; cellular radio; computer aided analysis; directive antennas; geometrical theory of diffraction; microwave propagation; radio access networks; ray tracing; receiving antennas; GTD/UTD; LMDS systems; antenna beamwidth; antenna directivity effects; broadband wireless technology; buildings effects; cellular architecture; channel parameters; computer-aided tool; geometrical theory of diffraction; local multipoint distribution system; modified SBR method; modified ray tracing algorithm; path loss; propagation prediction; receiver antenna height; shooting and bouncing ray method; simulation; uniform theory of diffraction; wireless channels; Antennas and propagation; Computer vision; Delay; Diffraction; Geometry; Light scattering; Ray tracing; Receiving antennas; Solid modeling; Spatial databases;
Conference_Titel :
Vehicular Technology Conference, 2002. VTC Spring 2002. IEEE 55th
Print_ISBN :
0-7803-7484-3
DOI :
10.1109/VTC.2002.1002611
