APPARATUS AND METHOD FOR CONTROLLING DYNAMIC RANGE OF WEIGHT VECTORS ACCORDING TO COMBINING METHODS IN A MOBILE STATION EQUIPPED WITH MULTIPLE ANTENNAS IN HIGH RATE PACKET DATA SYSTEM USING CODE DIVISION MULTIPLE ACCESS SCHEME

摘要

ABSTRACT Provided is an apparatus and method for controlling a dynamic range of weight vectors according to a combining method to fit an input range of a channel decoder in a mobile station of a high rate packet data system. The apparatus includes a weight vector calculator for calculating weight vectors using channel estimation values of receiving paths via each of antennas and/or autocorrelation matrix values from received pilot symbols according to a combining method of multi-path signals, a controller for outputting modified weight vectors by fitting an input range of a channel decoder according to the combining method, and a combiner for outputting the combined signal by multiplying descrambled received signals by the modified weight vectors. Accordingly, even if various combining methods are used when data is received in the mobile station, performance degradation of a channel decoder can be minimized.