Cost-effective
VSAT-based solutions have become available to every sector
due to the convergence of critical technology trends and cost
refinements.
Satellite
Capacity Improvements:
Space segment
is more abundant and affordable today, and satellites are
generally more powerful, enabling the use of smaller
and more inexpensive - antennas on the ground.
Digitization:
Meanwhile,
voice calls are now being digitized using digital signal processing
(DSP). In the past, a telephone conversation coded in PCM
required the equivalent of 64kbps; today with state-of-the-art
coding algorithms designed to recognize and mimic human voice,
toll-quality voice can be achieved with as little as 4.8 kbps.
The end result: More than 2,000 telephone conversations can
be carried on a single 36 MHz transponder, translating into
very low space segment cost per line.
Modulation
& Coding:
Additional
space-segment savings have been realized through new modulation
schemes and efficient coding techniques, which permit the
digital information to be recovered more efficiently from
the satellite.
Component
Cost Reductions:
Hardware gains
also have been made. Silicon prices continue to drop and Application
Specific Integrated Circuits (ASICs) that perform the majority
of the VSAT functions are economically feasible. They also
bring the added benefit of reducing component count, reducing
costs and increasing reliability.
This, in turn,
has fueled higher adoption rates, which has led to greater
economies of scale. These savings are also passed through
to the end user in the form of lower terminal prices.
Equals
Cost-Effective Solutions:
The end result
is a cost-effective, rapidly-deployable solution flexible
enough to address a wide range of applications that are self
sustaining and, indeed, that help create new sources of capital.
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