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URN etd-0407105-105029 Statistics This thesis had been viewed 3618 times. Download 3581 times. Author Fang-Yu Su Author's Email Address No Public. Department Communication Engineering Year 2004 Semester 1 Degree Master Type of Document Master's Thesis Language English Page Count 123 Title Field tests of digital television and broadcast systems in Taiwan Keyword SFN DCB-T DAB COFDM COFDM DAB DCB-T SFN Abstract In this thesis, we report the field tests of digital television and broadcast systems in Taiwan. The tests include the Euraka-147 for digital broadcast system and the DVB-T and ATSC systems for digital television system. The evaluations were carried out in most metropolises in Taiwan.
DAB, DVB-T, and ATSC play important roles in a digital world. The promotion of digital media would definitely bring new hopes for our economy. On the television side there were some doubts before 2001 on which system we should take. On the broadcast side, it seems to have little doubt to take the European’s standard. Based on various tests between DVB-T and ATSC, include one reported in this thesis, the telecommunication authority (DGT) agreed on 2002 to adopt the DVB-T transmission standard.
In this thesis, we record some of the test methods and test results. In TV-inside, a total of 237 test points were measured. In DAB side, 200 test points were measured. We found that Taiwan’s special mountainous terrains may some times block the digital transmissions. However, the OFDM technology offered by both systems can largely reduce the multi-path interferences. Signal receiving qualities can further be improved by adopting more gap fillers.
Advisor Committee The-Nan Chang - advisor
Chau-Yun Hsu - co-chair
Wen-Tzu Chen - co-chair
Files Date of Defense 2005-01-31 Date of Submission 2005-04-07