Title :
The impact of building database resolution on predicted LMDS system performance
Author :
Anderson, Harry R.
Author_Institution :
EDX Eng. Inc., Eugene, OR, USA
Abstract :
Planning broadband multipoint wireless distribution systems in urban areas requires accurate knowledge of the propagation environment which consists primarily of buildings and trees. The impact of lateral and vertical accuracy for such building databases is investigated by examining the differences in predicted system performance as a function of database resolution. The results for LMDS system studies with a “perfect” vector database were compared with identical studies using 1, 2, 5 and 10 meter canopy building databases. The coarser the canopy database resolution, the more significant the system prediction error. When using 1 and 2 meter canopy databases, the line-of-sight decision error is on the order of 2% of the paths, a manageable figure for most LMDS system designs
Keywords :
broadband networks; microwave propagation; radio access networks; telecommunication computing; telecommunication network planning; visual databases; LMDS system designs; building database resolution; buildings; canopy database resolution; lateral accuracy; line-of-sight decision error; local multipoint distribution service; planning broadband multipoint wireless distribution systems; predicted LMDS system performance; propagation environment; system performance; system prediction error; trees; urban areas; vertical accuracy; Buildings; Control systems; Costs; Frequency; Radio spectrum management; Sea surface; Spatial databases; System performance; Urban areas; Urban planning;
Conference_Titel :
Radio and Wireless Conference, 1999. RAWCON 99. 1999 IEEE
Conference_Location :
Denver, CO
Print_ISBN :
0-7803-5454-0
DOI :
10.1109/RAWCON.1999.810936
