This article dicusess, the histroical background in the DBS (DTH), freq. Allocations, channel coding, source coding, modulations suitable for satellite-based digital TV, and finally the standards for a Digital TV for India.
As in terrestrial broadcasting service, transmission in the broadcasting satellie.
Services (BSS) are intended for direct reception by the general public are characterized by high effective isotropic radiated power (E.I.R.P.) to permit the use of simple and inexpensive home receiving system. It is only during the last few years that high transmit powers from the satellites have become possible through the development of high power travelling wave tube amplifiers (TWTA), larger solar panels and the narrow and shaped antenna beams. The size of the receiving earth terminal antennas has been reducing. A complete 4 GHz TV signal cost 4 lakh rupees whereas 4 GHz direct reception system (DRS) for home viewers costs less than Rs 40,00/- today.
While going through the news about the drastic fall of BSE Index in the third week of May 2006, I came across a quote by the CEO of a leading domestic private sector financial firm, who said “We are so enamoured by foreigners in this country that no one has still figured out the impact this circular will have on domestic investors”. This is so much right when we talk about the broadcast industry too. We are always ready to spread a red carpet for the foreign broadcasters at the cost of own industry, be it the Indian broadcasters or the cable operators. It is the foreign broadcasters who always wanted to delay CAS as long as possible and they should be happy that the government has asked for a eight months delay from the High Court. However Court has has not accepted the same and wants the implementation completed in 2006 itself which is a positive sign. The ministry has been asked to submit a plan by 05 July 2006.