Patent ID: 6690652
Filing Date: 2004-02-10
Classification: H04L,H04W

Abstract:
A Wide-band Code Division Multiple Access (â€œWCDMAâ€ ) system comprising:a base station and a mobile station; a first channel including a baseband signal having a variable transmission rate for data transmission coupling the base station and the mobile station; a pilot channel including a group of pilot data signals and a group of transmission power control data signals; means responsive to the baseband signal for predicting power attenuation on the first channels by a probability density function based upon signal fading; means establishing power thresholds in the first channel using the pilot data signals and based upon the probability density function divided into several ranges in which the probability of the power attenuation in each range is equal to achieve average constant power in the first channel; and means responsive to the predicting power attenuation means to signal both a transmitter and a receiver in the first channel over the pilot channel to reconfigure the transmission rate according to the predicted power attenuation.