DIGITAL BROADCASTING SYSTEM USING MULTI-ANTENNA AND METHOD THEREFOR

摘要

PURPOSE: A digital broadcasting system using a multi-antenna and a method therefor are provided to enhance a diversity gain by combining signals transmitted from a transmission device through a plurality of receiving antennas and one signal processor. CONSTITUTION: A plurality of receiving antennas(207) receive digital broadcasting signals transmitted from a plurality of transmitting antennas(206). A plurality of frequency down-converters and digital demodulators(208) convert RF(Radio Frequency) signals received through the receiving antennas(207) into baseband signals. A plurality of channel estimators(209) estimate channels from the respective baseband signals. A signal processor(210) combines the received signals with the channel characteristics estimated in the channel estimators(209), and obtains a diversity gain. An error correction decoder(211) corrects the error of the output signal of the signal processor(210), and recovers a digital data series. A demultiplexer and source decoder(212) divides the digital data series recovered through the error correction decoder(211) into image signals, voice signals and additional data, and decompresses compressed signals.