DTH is a new technology and
it has matured to its full potential in other parts of the world. There are
many application has been found everyday for exploitation of benefits of DTH?
The
word ‘DTH’ is synonymous with transmission of digital video channel to home
subscriber’s using a small dish antenna. The DTH utilizes a technology which
enables a home to receive high speed internet broadband access data
communication, voice over internet protocol (IP) telephony and much more using
an open standard Digital Video Broadcasting (DVB) technology. The video
channels are received with a suitable set top box. Capable of demodulating
Motion Picture Engineering Group (MPEG-2) standard videos. It is for the return
channel required for other services such as voice over internet protocol and
broadband access data communications, that a return channel is also required
for the home terminal. The return channel via the satellite is called RCS and
is an open standard.
Hardware
compatible with DVB-RCS technology are readily available in the market in both
Ku-band and C-band. DVB-RCS is an international open standard for multimedia
satellite network where the return data rates in access of 2 Mbps are possible
using low cost user terminals. The forward ink is usually at 40 Mbps.
Today, most satellite TV customers in
developed television markets get their programming through a direct broadcast satellite
(DBS) provider, such as DISH TV or DTH platform. The provider selects programs
and broadcasts them to subscribers as a set package. Basically, the provider’s
goal is to bring dozens or even hundreds of channels to the customer’s
television in a form that approximates the competition from Cable TV. Unlike
earlier programming, the provider’s broadcast is completely digital, which
means it has high picture and stereo sound quality. Early satellite television
was broadcast in C-band - radio in the 3.4-gigahertz (GHz) to 7-GHz frequency
range. Digital broadcast satellite transmits programming in the Ku frequency
range (10 GHz to 14 GHz). There are five major components involved in a direct
to home (DTH) satellite
A PATH TOWARDS DTH
On June 25, 1967, for two hours 26
nations of the world were joined together by an invisible electromagnetic grid
utilizing four satellites. The London-based production, in glorious black and
white, was the first-ever use of satellites to simultaneously interconnect
remote corners of the world to a single program event. The program,
appropriately entitled "Our World," included the Beatles debuting the
song "All You Need Is Love" to an audience estimated at more than 600
million.
During the course of the telecast,
live feeds were interconnected through a pair of early design Intelsats, an
American experimental satellite (ATS-1), and a Russian Molniya class bird. The New
York Times would write about the ground-breaking telecast, "Our World
was a compelling reaffirmation of the potential of the home screen to unify the
peoples of the world."
Less than three decades later, or
approximately the period of one generation of mankind, more than 30 million
homes in the world are equipped with their own satellite dishes. The early
Intelsat, ATS, and Molniya satellites were capable of relaying one (or at most,
two) simultaneous TV programs; each satellite of the current generation easily
can deliver as many as 200 program channels to dish antennas less than
one-thirtieth of the size required for reception of the original "Our
World" telecast.
Well before the turn of the
century, virtually any location in Asia or the Pacific will have direct access
to hundreds of channels of TV, high-speed Internet links, and thousands of
radio program channels. It is not an exaggeration to suggest that satellites
are redesigning the very fabric of life by creating full-time universal access
to "our world."
All of this technology
creates virtually unlimited opportunities for new business enterprise and
personal development. You are holding in your hand a key that will unlock for
you, your family, and your business the "secrets" of the 21st century
"Information Revolution." There has never been a point in the history
of the world when so much opportunity has presented itself to mankind. Use what
you learn here wisely and your life will forever be changed.
