by admin

The world’s countries are vigorously developing the ground Digital TV Broadcasting (DTTB), terrestrial digital TV broadcasting using advanced terrestrial digital TV transmission technology, has the following features: large capacity information transmission. 8MHz channel can be transmitted in a more than 20Mbps of data, some of the largest payload modulation rate up to 33Mbps, to meet the transport of a HDTV and SDTV sets of requirements; has good resistance against multi-path and Doppler frequency shift features, in various environments strong anti-interference. Terrestrial digital TV transmission technology commonly used by the most advanced error correction and signal modulation techniques to enable the receiver to a variety of conditions and environments reliable received signal, to anti-static multi-path (receiver at-intensive buildings environment, only a simple antenna can be used to meet the normal reception) and dynamic multi-path interference (sports environment suitable to receive, in the case of speed up to 150KM per hour, can be stable to receive), and resistant to various home appliances pulse interference . The feature not only for fixed receivers and also applies to portable receivers, people traveling by car and train through the mobile phone, PMP (portable multimedia players), PDA (personal digital assistants) and laptop computers and other receiving terminal access to reliable, real-time multimedia information services; In addition, television frequencies is rich in resources, quality, determine the terrestrial digital TV transmission technology has a good application market and development space. Terrestrial digital television broadcasting agreements: DVB-T, DVB-H , DAB, ISDB-T and domestic made DMB-T/ADTB-T/TiMi, following me in the terrestrial digital TV transmission technology in the field of application of live television on your point of view.

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