Recently, CDMA system has been widely used in wireless communication systems. Since all the signal shares a frequency band and is discriminated from each other by code, the reverse link power control is very important to improve the communication qual...
Recently, CDMA system has been widely used in wireless communication systems. Since all the signal shares a frequency band and is discriminated from each other by code, the reverse link power control is very important to improve the communication quality and to increase the system capacity. In this paper, a program was constructed by using Matlab to simulate and analyze the power control in CDMA systems based SIR(Signal to Interference Ratio). Through simulations by using the program, we observed some known characteristics of the power control and the capacity of a CDMA system. We also found that for a new active user, one step jump command to average received power of current active users in the cell as the first target power command in the reverse link of the new user, instead of 1 dB step size as given in IS-95(a), can greatly reduce the stabilizing time in power control.