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Analysis of the Adjacent Channel Interference from High Power Gap-filler in Satellite Digital Multimedia Broadcasting (DMB)  

Choi, Bokun (Yonsei University)
Lee, Youngjin (Yonsei University)
Hong, Youngjin (Tongmyong University)
Seo, JongSoo (Yonsei University)
Publication Information
Journal of Broadcast Engineering / v.10, no.3, 2005 , pp. 372-382 More about this Journal
Abstract
DS/CDM-QPSK (ITU-R Recommendation BO.1130-4 Annex 6, 'Digital System E'), which has been adoptedas a standard of Korean Satellite DMB (Digital Multimedia Broadcasting) system, is a satellite-based multimedia broadcasting service which transmits the multi-channel and high quality contents to the terrestrial users through a satellite or gap-fillers. The broadcast from a satellite is directly received in the plain terrain which are within line-of-sight, but in cities where the broadcast cannot be received directly due to the shadow of buildings, an attempt is being made to install 'Gap-Fillers' to improve the reception in those areas. The gap-fillers, however, may induce interference to service of adjacent band, when their output power is substantially higher compared to the received signal power of signal from a satellite of the adjacent service. In this paper, a link budget analysis is performed, and the optimal EIRP of a gap-filler to maximize the gap-filler coverage, while preventing adjacent band interference is derived.
Keywords
Satellite DMB; Gapfiller; DS-CDM/QPSK; Adjacent Channel Interference;
Citations & Related Records
Times Cited By KSCI : 1  (Citation Analysis)
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