Optimization of power control parameters for DS-CDMA cellular systems

Author

Abrardo, Andrea ; Giambene, Giovanni ; Sennati, David

Author_Institution

Dept. of Inf. Eng., Siena Univ., Italy

Volume

49

Issue

8

fYear

2001

fDate

8/1/2001 12:00:00 AM

Firstpage

1415

Lastpage

1424

Abstract

This paper envisages a cellular system based on code-division multiple access and investigates the performance of a strength-based closed-loop power control (CLPC) scheme on the basis of different parameters, such as the number of bits of the power command, the quantization step size, and the user speed. On the basis of a log-linear CLPC model, an analytical approach has been developed that has allowed to determine the optimum quantization step size to be used for each value of the number of power command bits. Simulation results have permitted to support the analytical framework developed in this paper

Keywords

cellular radio; code division multiple access; optimisation; power control; spread spectrum communication; telecommunication control; DS-CDMA cellular systems; code-division multiple access; log-linear CLPC model; optimization; optimum quantization step size; power command; power control parameters; quantization step size; strength-based closed-loop power control; user speed; Analytical models; Downlink; Fading; Fluctuations; Multiaccess communication; Power control; Power measurement; Propagation delay; Quantization; Shadow mapping;

fLanguage

English

Journal_Title

Communications, IEEE Transactions on

Publisher

ieee

ISSN

0090-6778

Type

jour

DOI

10.1109/26.939877

Filename

939877