Title :
An analytical approach for closed-loop power control error estimations in CDMA cellular systems
Author :
Abrardo, Andrea ; Benelli, Giuliano ; Giambene, Giovanni ; Sennati, David
Author_Institution :
Dept. of Inf. Eng., Siena Univ., Italy
Abstract :
This paper proposes an analytical study which aims at evaluating the received power statistics in DS-CDMA cellular systems which use a closed-loop power control scheme to compensate for fast multipath fading. The effects of a limited transmission power at the mobile terminals have been also investigated. This study is based on a first order Taylor expansion of the fast fading fluctuations. The accuracy of the obtained results has been verified through computer simulations. Classical frequency-selective channel models have been taken into account which involve the use of a diversity RAKE receiver at the base station. Finally, the system capacity is evaluated under different environmental conditions
Keywords :
cellular radio; closed loop systems; code division multiple access; diversity reception; error statistics; fading channels; multipath channels; power control; radio receivers; spread spectrum communication; telecommunication control; CDMA cellular systems; DS-CDMA cellular systems; base station; classical frequency-selective channel models; closed-loop power control error estimations; diversity RAKE receiver; fast multipath fading; first order Taylor expansion; limited transmission power; mobile terminals; received power statistics; system capacity; Computer simulation; Error correction; Fading; Fluctuations; Frequency diversity; Multiaccess communication; Power control; Power system modeling; Statistical analysis; Taylor series;
Conference_Titel :
Communications, 2000. ICC 2000. 2000 IEEE International Conference on
Conference_Location :
New Orleans, LA
Print_ISBN :
0-7803-6283-7
DOI :
10.1109/ICC.2000.853745
