Title :
Development of AM/QAM hybrid optical SCM transmission system
Author :
Lif, J. ; Yano, Kenjiro
Author_Institution :
Fujikura Ltd., Chiba, Japan
Abstract :
For transmitting a digital video signal based on MPEG2, several digital modulation techniques such as QAM, VSB, and OFDM, which have good bandwidth efficiency, are being researched. The system discussed here includes one channel of a QAM signal which is frequency multiplexed with 60 channels of VSB-AM signals. It can provide digital video services over existing networks like the coaxial cable network and AM/FM optical fiber network. The interference between QAM and VSB-AM is discussed
Keywords :
cable television; coaxial cables; digital communication; frequency division multiplexing; modems; multiplexing equipment; optical communication equipment; optical fibre subscriber loops; optical modulation; quadrature amplitude modulation; subcarrier multiplexing; television interference; visual communication; AM/FM optical fiber network; AM/QAM hybrid optical SCM transmission system; MPEG2; QAM signal; VSB-AM signals; coaxial cable network; digital modulation techniques; digital video services; digital video signal; frequency multiplexing; interference; subcarrier multiplexing; Cable TV; Demodulation; Digital modulation; Digital video broadcasting; Modems; Optical modulation; Optical pulse shaping; Optical receivers; Optical transmitters; Quadrature amplitude modulation;
Conference_Titel :
Communication Technology Proceedings, 1996. ICCT'96., 1996 International Conference on
Conference_Location :
Beijing
Print_ISBN :
0-7803-2916-3
DOI :
10.1109/ICCT.1996.545250
