Contents
Advantage of Digital over Analog Satellite communication
1. Increased capacity in multi-access mode (using Time
Division Multiple Access )
2. Economical advantages through increased capacity, more
flexible operation and reduced production cost
3. More robust to interference
4. Compatibility : Since a digital bit string is processed as
such independently as whether the source information is a
colour TV signal, analog voice or a digital data.
5. Freedom to add new facilities and services
6. Transmission policy is almost independent of distance and
network topologies
7. Direct low-cost interconnect with terrestrial microwave,
cable and optical fibre systems.
SATELLITE V/S CABLE TV
Satellite TV offers a distinct technological advantage over cable TV systems: cable operations are essentially satellite operations in that cable networks receive their programming via satellite but then re-transmit the signals through the cable companies' trunk lines, which degrade the audio and video signals to a greater or lesser degree on the way to the customer’s home. Satellite TV, on the other hand, eliminates the intervening wiring and provides a direct link from the satellite to the customer’s antenna in a 100% digital video and audio feed.
