A demodulator system for supporting mimo and ofdm transsmission and control method thereof

PURPOSE: A demodulator system and a method for controlling the same are provided to verify a channel with respect to a signal propagation path by dividing channels according to extracted orders based on a channel estimation value and the reference signal of data received from a plurality of receiving antennas. CONSTITUTION: A multiple carrier demodulator(110) extracts valid data by eliminating the protective section of data signal inputted from a plurality of antennas, performing a fast Fourier transformation, and eliminating the protective band. A channel estimator(120) extracts a reference signal from the valid data and synchronizes the valid data. Through a frequency and linear interpolation, the channel estimator calculates and outputs a channel estimate value based on the combination of antennas. A frame deformatter(130) extracts a channel for a signal propagation path from the synchronized data and successively outputs the channel. A protective section eliminator eliminates the protective section after an inverse fast Fourier transformation when a final signal is outputted from a base station modulator.