数字移动电视系统及测试

Digital Mobile TV System and Its Measurement

DMB-T方案针对现有数字电视地面广播(DTTB)国际标准的不足,采用时域同步正交频分复用多载波调制技术(TDS-OFDM)、串联式分层级联纠错码,改善了传输系统的有效性、可靠性和抗干扰性,介绍DMB-T的原理与播出系统,并通过测试证明了该方案的可行性。

DMB - T overcame weakness of present Digital Terrestrial TV Broadcast （DTTB）. Using Time Domain Synchronous -Orthogonal Frequency Division Multiplexing （TDS -COFDM） and cascade FEC technology, improved reliability, efficiency and anti - interference greatly. Principle of DMB - T and broadcasting system were introduced. The feasibility of this project was proved by real testing.