DocumentCode :
346518
Title :
Increase in performance of a new or deployed system by cell site re-configuration
Author :
O´Byrne, Vincent
Author_Institution :
Network Planning & Eng. Dept., GTE Labs. Inc., Waltham, MA, USA
Volume :
3
fYear :
1999
fDate :
1999
Firstpage :
1530
Abstract :
In a CDMA system deployed using the hexagonal cell arrangement, locations can exist where there are too many available pilots, while there are not sufficient in other locations. This can lead to degradation in performance at these locations. Preliminary results on a simple but effective change in the underlying cell architecture and deployment strategy that can alleviate some of these problems is presented. This is achieved by re-orienting the transmit antennas which helps balance the number of signals by distributing them more evenly and thus increasing overall performance. This reduces the effect of the pilot pollution and increases the worst case E0/I0 while also reducing the interference on the forward and reverse links. This is especially beneficial for wireless local loop (WLL) systems or microcells where channel conditions exhibit line-of-sight properties
Keywords :
cellular radio; code division multiple access; microcellular radio; radiofrequency interference; CDMA system; cell architecture; cell site re-configuration; channel conditions; deployed system; deployment strategy; forward link; hexagonal cell arrangement; interference; line-of-sight properties; microcells; performance; pilot pollution; reverse link; transmit antennas reorientation; wireless local loop systems; Degradation; Frequency; Intelligent networks; Interference; Laboratories; Microcell networks; Multiaccess communication; Pollution; Process design; Transmitting antennas;
fLanguage :
English
Publisher :
ieee
Conference_Titel :
Vehicular Technology Conference, 1999. VTC 1999 - Fall. IEEE VTS 50th
Conference_Location :
Amsterdam
ISSN :
1090-3038
Print_ISBN :
0-7803-5435-4
Type :
conf
DOI :
10.1109/VETECF.1999.801550
Filename :
801550
Link To Document :
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