Title :
A comparative study of power control strategies for soft handover in UTRA FDD WCDMA system
Author :
Akhtar, Saleem ; Malik, Shahzad Ali ; Zeghlache, Djamal
Author_Institution :
Telecommun. Networks & Services Dept., Inst. Nat. des Telecommun., Evry, France
Abstract :
This paper analyzes the potential benefits of using different schemes to control base station power during soft handover for UTRA WCDMA downlink. Balanced downlink power control, used to limit control power drifting, and the site selection diversity technique (SSDT) power control are compared with hybrid power control. A hybrid scheme switches dynamically from balanced power control to site selection diversity power control to decrease the base station power during congestion. The objective is to find out whether there is any additional improvement in cellular coverage and performance using these schemes. Total base station transmission power, individual traffic channel power for each mobile station and outage time are used for comparison
Keywords :
broadband networks; code division multiple access; diversity reception; microcellular radio; multiuser channels; power control; radio links; telecommunication control; UTRA FDD WCDMA system; UTRA WCDMA downlink; balanced downlink power control; base station power control; base station transmission power; cellular coverage; hybrid power control; macrocellular environment; microcellular environment; mobile station; outage time; power control; site selection diversity; soft handover; traffic channel power; Base stations; Control systems; Downlink; Frequency; Intelligent networks; Interference; Mobile communication; Multiaccess communication; Power control; Switches;
Conference_Titel :
Vehicular Technology Conference, 2001. VTC 2001 Spring. IEEE VTS 53rd
Conference_Location :
Rhodes
Print_ISBN :
0-7803-6728-6
DOI :
10.1109/VETECS.2001.944087
