GK5201 is a high-performance national standard terrestrial demodulation chip, which can meet a variety of complex ground conditions and suppress interference effectively. Its main functions include baseband signal demodulation and channel decoding for converting the DTMB signal output from the terrestrial tuner into a TS stream and providing it to the backend decoder chip via a simple interface.
◆Fully compliant with GB20600 standard,supports MC( Multi-carrier )and SC( Single Carrier ), with and without pilot;
◆Modulation includes 4QAM-NR,4QAM,16QAM,32QAM,64QAM with header size of PN420,PN595 and PN945 symbols;
◆LDPC decoder with code rate 0.4,0.6,0.8;
◆De-interleaver depth:240 and 720 symbols
◆Automatic carrier mode detection and modulation/code rate detection
◆Signal quality monitor and lock detector
◆Supports standard IF input and zero-IF(baseband) input, interface with all types of tuners
◆Integrated A/D converters with DC component cancellers,IQ imbalance compensator,and phase imbalance compensator
◆Standard mpeg transport output with either parallel or serial interfaces
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