Title :
Stochastic power control algorithm in CDMA systems
Author :
Cai, Min ; Wang, Wei ; Zhang, Huanshui
Abstract :
Transmitter power control has been proven to be an efficient method to solve co-channel interference in CDMA system, and to increase the capacity of systems. A novel distributed power control algorithm based on estimates of channel gains is presented in this paper. The proposed algorithm is robust and does not require the exact knowledge of channel gains. In the proposed scheme, power control problem is converted into the zero point problem of a certain function. It is proved that the algorithm converges to the average optimal solution by stochastic approximation approach.
Keywords :
approximation theory; code division multiple access; convergence; distributed control; power control; stochastic systems; telecommunication control; transmitters; CDMA systems; channel gain estimates; co-channel interference; distributed power control; stochastic approximation; stochastic power control; transmitter power control; zero point problem; Base stations; Delay; Interference; Iterative algorithms; Multiaccess communication; Power control; Power system modeling; Stochastic processes; Stochastic systems; Transmitters;
Conference_Titel :
Control, Automation, Robotics and Vision Conference, 2004. ICARCV 2004 8th
Print_ISBN :
0-7803-8653-1
DOI :
10.1109/ICARCV.2004.1469314