A concept of power control in cellular radio systems [Elektronisk resurs] / Fredrik Gunnarsson, Jonas Blom and Fredrik Gustafsson

• Due to the rapid expansion of the cellular radio systems market, and the need for wireless multimedia services, the available resources have to be utilized efficently. A common strategy is to control the transmitter powers of the mobiles and base stations. However, when applying power control to real systems, a number of challenges are prevalent. The performance is limited by time delays, nonlinearities and the availability of measurements and adequate quality measures. In this paper we present a Power Regulator concept, which comprises an Unknown Input Observer, a Quality Mapper and a Power Control Algorithm. The applicability of the concept is exemplified using frequency hopping GSM, and simulations indicate benefits of employing the proposed concept. 

Indexterm och SAB-rubrik

Cellular radio systems Power control Estimation Nonlinear filters Delay analysis PI controllers