Uplink power control with faster convergence in DS-CDMA system

In DS-CDMA system, when the power control is ideal and the power assignment is optimum in a dedicated cell, the relationship between the users received powers will have a definite ratio related to their required SIR. In this paper, we propose a constrained cell-level power control algorithm that updates the transmission power of users to make the received powers in the dedicated cell satisfy the definite ratio after iteration. The proposed iteration method does not need to compensate intra-cell interference fluctuation while some other iteration algorithm should do. Using the existing DCPC (distributed constrained power control) and CSOPC (constrained second-order power control) as reference algorithm. We compared three algorithms in a feasible DS-CDMA system. The results show that the convergence speed of the proposed algorithm faster than the two existing algorithms.