Improving the Performance of CDMA Mobile Net- work Using Adaptive Power Control Techniques

The capacity of Code Division Multiple Access (CDMA) technologies used in Wireless mobile networks relies on efficient power control algorithms due to near-far effect. In this work, the performance of the current power control algorithms is first investigated and then a new adaptive power control algorithm for CDMA mobile networks is proposed. The proposed algorithm is able to significantly decrease the variance of the power control maladjustment without any increase in power control signalling; only one bit is still needed for the power control feedback command. Moreover, it is able to minimize mobile station total transmission power which the conventional fixed step power control algorithms fail to handle. In this work, Simulation was carried out for the modified adaptive power control algorithm using MATLAB. Simulation result shows that the Modified Adaptive Power Control (MAPC) algorithm reduces drastically the mobile stations’ transmit power which in turn improves the capacity of CDMA mobile network, thanks to its tunable parameters.