DVB-H 系統的傳輸效能模擬
Transmission Performance Simulations for DVB-H System
Date Issued
2005
Date
2005
Author(s)
Lin, Hao-Chun
DOI
en-US
Abstract
DVB-H ( Digital Video Broadcasting-Handhelds ) dedicated for handhelds is basedon DVB-T ( Digital Video Broadcasting-Terrestrial ). Mobile receptions of both systemsare significantly affected by the fast changing transmission channel. For the purpose ofachieving higher speeds, most of the current solutions for DVB-T propose to use twoantennas at the receiver and a more elaborate signal processing for the channelestimation. But the essential commercial requirements of DVB-H were found to be abattery-powered mobile terminal with a small screen. It should be able to receivemultimedia services using a single antenna in the portable, mobile and indoorenvironments.
In this thesis, we exploit the error correction capabilities provided by the channel
coding of the DVB-T standard to improve the reliability of the received signals for the
purpose of increasing the maximum tolerable doppler frequency. The building blocks of
the new structure have been optimized in order to reduce the complexity. Simulations
show that the use of the new structure with single antenna yields a better improvement
in terms of the maximum tolerable speed and the minimum required SNR.
Subjects
手提式數
位無線廣播電視
正交分頻多工
DVB-H
DVB-T
OFDM
MPE-FEC
QEF
QEFIP
2d
Type
thesis
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