SYSTEM FOR RECEIVING ULTRA-HIGH PERFORMANCE SPACE-TIME ARRAY OF FADING ADAPTIVE TYPE AND METHOD THEREOF

摘要

PURPOSE: A system for receiving an ultra-high performance space-time array of a fading adaptive type and a method thereof are provided to select a correlation length of a pilot channel in adaptable and perform a correlation using a variation amount of a fading channel obtained through a doppler frequency estimation and a data rate of a receiving signal when a pilot channel is correlated for compensating a distortion phenomenon by a fading channel in a reverse direction link of a CDMA wireless communication system applying an array antenna. CONSTITUTION: A plurality of digital beam forming networks(120) perform a space filtering by multiplying a receiving signal which is received from a plurality of antennas and converted into a digital signal by a weight value vector according to each multiple path signal, and forms a beam. A plurality of demodulators(160) demodulate output signals of a plurality of digital beam forming networks. A pilot channel correlator estimates a fading channel using a pilot signal in the demodulators(160). A doppler frequency estimation unit(150) receives an output of the pilot channel correlator and estimates a doppler frequency of the fading channel. A microprocessor(180) supplies data rate information of a received signal and controls a signal flow. A correlation length selection unit(140) receives a doppler frequency estimation value estimated from the doppler frequency estimation unit(150) and a data rate of a received signal and decides a correlation length of the pilot channel correlator. A reference signal generator(170) receives outputs of a plurality of fingers and generates a reference signal. A plurality of weight value vector estimators receive an output of the reference signal generator(170) and the receiving signal and supplies the digital beam forming network(120).