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The defense date of the thesis is 2005-05-27
The current date is 2019-05-23
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URN etd-0527105-151123 Statistics This thesis had been viewed 2045 times. Download 15 times. Author Chien-Hu Shang 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 66 Title Performance evaluations on digital TTV and FTV single frequency networks Keyword single frequency network multipath interference mobile reception guard interval gap filler frequency response frequency response gap filler guard interval mobile reception multipath interference single frequency network Abstract This thesis evaluates performances of two DVB-T single frequency networks, deployed by TTV and the FTV stations respectively. Totally, there are six transmitters to provide test signals. They are located at bamboo mountain in Taipei, Lungtan area in Tayou, Inflammation mountain in Maouli, Phoenix area in Nantou, Pillow mountain in Tainan, and Chungliau in Kaoshung, all are in the western part of Taiwan .The evaluations were carried out in northern part of two freeways (No.1 and No.3 ). The tests covered the mobile and fixed-point receptions. The fixed-point tests were carried out at the exits on the freeway. Field strengths along with bit erroe rates were recorded. We also measured the impulse responses to evaluate the multi-path effects. The received signals were also objectively classified into three grade levels.
Based on measured results, both single frequency networks are compatible to eath other on the northern part of Taiwan. However, there are some differences on the southern part of it .It was found that the reception failed for several kilometers in Tainan and Kaoshung for FTV network. The displayed picture was very poor in those routes. However, the reception signal of TTV network can keep on an acceptable level. Only a few interrupted signals were observed.
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 2005-05-27