Smart antenna base station system and the method of chip level beamforming based and his action method to use standard signal production apparatus and the method and he

摘要

PURPOSE: A reference signal generation device and a method therefor and a smart antenna base station system based on chip level beam former using the same and an operating method therefor are provided to generate a reference signal according to a channel estimator and a chip level beam former by using a decision-directed mode, thereby increasing system capacity and base station ranges by exactly performing channel estimating and beam forming processes. CONSTITUTION: An RF receiver(102) converts a received signal into a digital baseband signal. A multi path searcher(103) inputs the digital baseband signal to detect multi paths, and estimates delay time for the multi paths. A chip level beam former(105) calculates a chip level beam forming weight vector, and multiplies the vector to an input signal vector of an array antenna(101). A despreader(106) performs despreading processes on the multi paths, and separates a DPDCH(Dedicated Physical Data Channel) from a DPCCH(Dedicated Physical Control Channel). A channel estimator(107) estimates channels up to the array antenna(101). A channel compensator(108) compensates DPDCHs and DPCCHs of each rake finger(104). A rake synthesizer(109) synthesizes the DPDCHs with the DPCCHs. Deciders(DPDCH,DPCCH)(110) decide symbols of the DPDCHs and the DPCCHs. A reference signal generator(111) generates a reference signal.