The Research On Broad Band Integrated Operation Based On CATV Network

21 century is an knowledge-economy age,information become to be the main resource of human.CATV network is the second large public-connect network,which has the greatest expansibility and the most abundant bandwidth.So we have advantaged status in the competition on Infobahn-connect. We should make full use of the inherent predominance what CATV network is provided with,such as Broad Band,large information capacity,high transmission speed,easy network management and high profit margin,CATV network will be the best way to carry out video,voice and data.But CATV network,which is built widely 15 years ago in our country,is only suit to bear analog broadcasting signals which is unilateral,most of the network's bandwidth is 550MHz.Limited by bandwidth,what earlier CATV network can do is analog television signals broadcasting which is the main income source.Lot's integrated operations can't be carried out through it,for example net web browse, net-game, net-education, VOD and so on.CATV is even in danger of being replaced by IPTV ,direct broadcast satellite and other new productions.So CATV digital...