Improvement in power updating algorithm in wireless DS-CDMA networks

Abstract

Cellular systems are generally encountered with near-far problem. Several power control updating algorithms have been proposed to deal with this problem. One of the commonly used algorithms is proposed by Zander that drives all the mobiles to achieve the system threshold signal to interference ratio (SIR), that is necessary for a mobile to get the access of base station. This algorithm deals with the link gain matrix associated with the system. Removal policy is applied which removes a mobile from the network if it fails achieve threshold value after being given several trials. The system is rebalanced by changing the link gain matrix. This increases the capacity as new incoming users can be served by the system. In this paper, a new power updating algorithm for cellular system is proposed and simulated to show that mobiles converges faster in terms of number of iterations required to get system threshold.