Predictive Linear Quadratic Power Control Algorithm in WCDMA Wireless Cellular Networks

Author

Liu Jiabin

Author_Institution

Dept. of Commun. Eng., Beijing Inst. of Petrochem. Technol., Beijing

fYear

2008

fDate

12-14 Oct. 2008

Firstpage

1

Lastpage

3

Abstract

Combining the approaches of optimal control theory and linear prediction technique, the user´s transmitting powers are minimized and the system capacity is maximized with the quality of services (QoS) being satisfied simultaneously for all mobile terminals. A linear quadratic form of power control problem in wideband code division multiple access (WCDMA) systems is established and the fading channel path-gain is predicted. Simulation results show graphically that the proposed predictive linear quadratic power control (PLQ-PC) algorithm converges faster no less than 7 percents and makes the system support about 1.2 times users compared with those obtained by auto-tuning fuzzy power control (ATF-PC) and signal-interference ratio based power control (SIR-PC) algorithms, respectively.

Keywords

cellular radio; code division multiple access; fading channels; linear quadratic control; WCDMA wireless cellular networks; fading channel path-gain; predictive linear quadratic power control algorithm; quality of services; wideband code division multiple access; Fading; Fuzzy control; Fuzzy systems; Land mobile radio cellular systems; Multiaccess communication; Optimal control; Power control; Predictive models; Quality of service; Wideband;

fLanguage

English

Publisher

ieee

Conference_Titel

Wireless Communications, Networking and Mobile Computing, 2008. WiCOM '08. 4th International Conference on

Conference_Location

Dalian

Print_ISBN

978-1-4244-2107-7

Electronic_ISBN

978-1-4244-2108-4

Type

conf

DOI

10.1109/WiCom.2008.51

Filename

4677960