It is well known that power control plays a very important role in CDMA cellular system when mobile subscriber moves in the cell, especially when very close to the border; the realization of power control is practically based on the result of the detection of signal power. So different techniques are analyzed in details such as distributed balancing, distance based and constrained power control. Also Stepwise Optimal Removal Algorithm (SORA) is introduced and evaluated to enhance Carrier to Interference Ratio (CIR) and capacity compared with previous techniques where the outage probability remains relatively low at higher users.