In chapter 5 the intention was to describe how different kinds of cable TV networks
are designed. The content includes everything from traditional coaxial cable networks
to combined fiber and coaxial (Hybrid Fiber Coax Networks). Also covered are satellite
I.F. distribution networks and networks for redistributing digital TV signals originating
from terrestrial transmitters. Different kinds of networks are compared and the advantages
and disadvatages of each alternative is discussed. Modulation of the DVB transport
stream is described as well as return channel traffic and the details about digital
set-top boxes. Chapter 5 contains 14 illustrations of which 1 is in the color insert.
Digital cable television makes it possible to get the same content as in a complete
satellite transponder into an 8 MHz channel that previously only distributed on analog
channels. Today 8 to 10 TV channels in standard resolution may be housed within such
a distribution channel. In addition to this, a noiseless picture is achieved in combination
with improved audio.
This HFC network uses different wavelengths for return traffic from different areas
in the network.