Title :
Predictive Linear Quadratic Power Control Algorithm in WCDMA Wireless Cellular Networks
Author_Institution :
Dept. of Commun. Eng., Beijing Inst. of Petrochem. Technol., Beijing
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;
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
DOI :
10.1109/WiCom.2008.51
