ITU-R QUESTION 1056-1999 Spectrum requirements for television broadcasting《电视广播的频谱要求》.pdf
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1、C:DOCUMENTS AND SETTINGSQGV33745MY DOCUMENTSDOWNLOADSR-QUE-SG06.105-1999-MSW-E.DOC 22.10.03 15.07.10 QUESTION ITU-R 105/6*Spectrum requirements for television broadcasting (1999) The ITU Radiocommunication Assembly, considering a) that terrestrial television broadcasting has commenced the transition
2、 from analogue to digital emission; b) that digital technology provides for greater total information capacity than analogue within a given bandwidth; c) that digital emission formats have different protection requirements to those determined for analogue emission; d) that digital emission can provi
3、de opportunities for new forms of broadcasting, including: HDTV; portable reception; mobile reception; high bit-rate data broadcasting; multimedia broadcasting; interactive broadcasting; e) that there is considerable interest in maximizing the efficient use of the spectrum in the VHF and UHF bands;
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