AMPLITUDE AND PHASE ESTIMATION METHOD IN WIRELESS COMMUNICATION SYSTEM

PROBLEM TO BE SOLVED: To provide a method of producing accurate channel estimates which does not require increased pilot signal strength.SOLUTION: I and Q component samples are sent to a Walsh despreader 206, and the Walsh despreader 206 uses the same Walsh function Wused to spread fundamental channels in a Walsh spreader. The Walsh despreader 206 produces I and Q components for a decovered fundamental channel. I and Q component signals are also input to a pilot channel estimator 218A, to produce filtered Pilot I and Pilot Q samples. The pilot channel estimator 218A is shown with an input of a Walsh code W, and this Wcorresponds to Wused to spread a pilot channel in the Walsh spreader.