Wagers PaulCable TV is an analog model of television broadcasting (as well as sometimes FM radio broadcasting) in which television signals are distributed through high-frequency signals transmitted through a cable laid to the consumer. Cable television is opposed to terrestrial and satellite television. It was invented in the United States in 1949.
Cable TV networks began to actively develop in Europe and the United States in the 1980s. For a long time, coaxial cable has been the basis of cable TV networks. The successful development of optical transmission technologies led to the introduction of fiber optics in cable TV networks in the form of so-called hybrid fiber-coaxial networks, which combine coaxial and fiber-optic cables.
A modern cable TV network includes a headend, trunk channels, sub-trunk lines and home distribution networks.
Advantages of cable television over terrestrial television:
- higher signal quality;
- high interference immunity;
- No problems with signal transmission in cities with dense high-rise buildings;
- The possibility of expanding the services provided to the subscriber and the number of channels.
- A large number of TV channels (often at least 60).
Traditionally, analog cable TV technology is successfully mastering the digital transmission methods, both direct to the customer (DVB-C) and two-way interactive (DVB+IP, DOCSIS).
