CDMA POWER CONTROL CHANNEL ESTIMATION UTILIZING DYNAMIC COEFFICIENT SCALING

摘要

PROBLEM TO BE SOLVED: To make it possible to construct the whole power control data route by a demodulator in a spread spectrum subscriber's unit receiver only by the less increment of the number of gates by executing the time sharing of demodulator hardware among a main data route and the power control data route and a receiving signal strength indicator(RSSI) route. SOLUTION: The main data route 165 and the power control data route 161 execute time-sharing among a complex conjugate generator 270, a complex multiplier 280 and a real number component extractor 290. Provided that a channel estimation filter 240 in the route 165 can not execute time sharing with the route 161 to hold a timing condition. Instead of the state, dynamic coefficient scaling is added to an infinite impulse response(IIR) filter 250 and the IIR filter 250 having the dynamic coefficient scaling can execute time sharing between the RSSI route 163 and the route 161.