Joint optimization of mobile transmission power and SIR error in CDMA systems

Author

Qian, Lijun ; Gajic, Zoran

Author_Institution

Dept. of Electr. & Comput. Eng., Rutgers State Univ. of New Jersey, Piscataway, NJ, USA

Volume

5

fYear

2001

fDate

2001

Firstpage

3767

Abstract

An optimal closed-loop power control scheme is proposed for CDMA systems based on joint minimization of signal-to-interference ratio (SIR) error and mobile transmission power. The resulted scheme is more flexible than minimization of SIR error only in the sense that it provides a tradeoff between service quality and mobile power consumption. The state-of-the-art of this power control algorithm is that the power evolution is directly driven by the SIR error. The proposed controller is an estimator based controller. An H_∞ filter is used to estimate and predict the channel quality. Simulation results show the effectiveness of the proposed optimal power control scheme

Keywords

cellular radio; code division multiple access; distributed control; filtering theory; optimal control; optimisation; power control; quality of service; CDMA systems; H_∞ filter; cellular wireless systems; channel quality; code-division-multiple-access; distributed control; mobile transmission power; optimal control; optimization; power control; signal-to-interference ratio error; Cellular networks; Computer errors; Error correction; Fading; Filters; Interference; Multiaccess communication; Power control; Quality of service; Wireless networks;

fLanguage

English

Publisher

ieee

Conference_Titel

American Control Conference, 2001. Proceedings of the 2001

Conference_Location

Arlington, VA

ISSN

0743-1619

Print_ISBN

0-7803-6495-3

Type

conf

DOI

10.1109/ACC.2001.946222

Filename

946222