Title :
Customization of vertical antenna directivity to reduce cochannel interference in a cellular communication system
Author :
Siu, Fred ; Tilston, David
Author_Institution :
BC Tel Mobility Cellular Inc., Burnaby, BC, Canada
Abstract :
The effect of antenna vertical directivity is usually ignored in estimating the C/I in a cellular network, i.e., the formula C/I=(D/R) γ does not explicitly or implicitly carry the antenna gain factor. A new type of base station antenna has been developed to see if C/I can be improved by antenna vertical pattern. The antenna has a sharp roll-off on the top half of the main lobe while maintaining minimum sidelobes in the upper hemisphere. Comparison of the custom designed antenna´s performance with that of a regular antenna in both urban and suburban area indicates that significant C/I improvement is possible
Keywords :
antenna radiation patterns; cellular radio; cochannel interference; directive antennas; interference suppression; land mobile radio; C/I improvement; antenna gain factor; antenna vertical pattern; base station antenna; cellular communication system; cellular network; cochannel interference reduction; customization; main lobe; minimum sidelobes; performance; suburban area; upper hemisphere; urban area; vertical antenna directivity; Base stations; Cellular networks; Frequency; Geometry; Intelligent networks; Interchannel interference; Maintenance engineering; Prototypes; Scattering; Shape;
Conference_Titel :
Vehicular Technology Conference, 1994 IEEE 44th
Conference_Location :
Stockholm
Print_ISBN :
0-7803-1927-3
DOI :
10.1109/VETEC.1994.345351
