Power control in CDMA systems: performance evaluation and system design implications

It is well known that a tight power control is required in CDMA mobile systems to avoid the `near-far´ effect. In this paper, the performance of a closed loop power control (CLPC) system is evaluated by simulation in realistic operating environments. The residual signal-to-noise ratio fluctuation at the base station receiver is reported, not only in terms of standard deviation, but also in terms of the `time below threshold´ statistics. This kind of results can be used in relating the power control performance with the interleaving action. The implications of power control with other system design aspects (like network control functions and cellular coverage) are finally discussed