Abstract-In this paper a prediction- based power control is proposed for code division multiple access (CDMA) systems in raleigh fading environment. one of the most serious problems which degrades the performance of power control algorithm is the effect of feedback delay. to overcome the effect of feedback delay, power control algorithm relies on channel prediction tehcniques, which utilize the correlation property of the past channel measurements. in CDMA power control, however, the correlation property of channel measurement is destroyed because the transmit power is continously updated for each power control interval. the prediction algorithm in this paper proposed using the least mean square (LMS) tehcnique. the result shows that the performance of predictive power control in terms of bit error rate ( BER) as a function of bit energy-to-interference power density ratio Eb/Io provides a significant improvement from that of the conventional predictor.