Variable structure power control algorithm in mobile radio systems

In this paper, we apply well-known variable structure systems control theory to power control problem in mobile radio systems. The aim is to make the power control operation insensitive to unknown changes in the link gains. Some of well-known distributed power control algorithms (Foschini and Miljanic algorithm, fixed step, etc) are obtained as special cases of the proposed algorithm. Simulation results suggest that the proposed algorithm is relatively fast and robust. The algorithm is also verified with an advanced dynamic system simulator