Patent ID: 6353643
Filing Date: 2002-03-05
Classification: H04B,H04J

Abstract:
A smart antenna receiver using a pilot signal in a base station of a code division multiple access (CDMA) mobile communication system, comprising:a plurality of multipliers for multiplying radio signals received respectively through a plurality of antennas by adaptive weights; a summer for generating an array output signal by summing outputs of said plurality of multipliers; a pseudo noise code generator for generating a pseudo noise code which is detected from said pilot signal and has been used in a transmitter; a first multiplier for generating a despread signal by multiplying said array output signal by said pseudo noise code; a data bandwidth filter for eliminating an interference component by filtering said despread signal; a limiter for adjusting an amplitude of the interference component eliminated despread signal; a second multiplier for generating a re-spread reference signal by multiplying said amplitude adjusted signal by said pseudo noise code; a subtracter for generating an error signal by calculating the difference between said reference signal and said array output signal; and an adaptive processor for generating an optimal adaptive weight using said error signal and said radio signals.