Application of gain scheduling concept in power control of WCDMA system
I. Virtej, Heikki N. Koivo · 2005
The WCDMA system is intended as a first step towards the third generation digital cellular systems. It is developed to meet the demands of wireless mobile communication in a true multimedia environment, where high packet data transfer and the Internet bearer service play major roles. One of the critical radio resources of WCDMA is power (control). The quality of the transmission can be improved by power control. Number of bits is real constraint in power control. The contribution of this paper is to use gain scheduling for mobile communication. The idea is that the parameters of the power control algorithm are changed according to the quality measurements of the system level. Power control coded on 1 bit and 2 bits is used for multi-base station multi-user simulations. Power control coded on 2/3/4 bits is used for one base station multi-user simulations. Both uplink and downlink transmission are considered.