- Shannon's Law dictates that
equipment which will allow a lower data rate can survive interference
better than faster equipment
- Part 15
bands have experienced a "race to the bottom" in which slower equipment
(e.g. Motorola Canopy) is designed to blast faster equipment off the air
- The
result: slower equipment "wins" -- but
the public loses because faster service becomes unavailable
- To
avoid this problem, spectrum policies must include minimum spectral
efficiency requirements measured in bits per second per Hz of spectrum
- Requirement
for spectral efficiency motivates manufacturers to build equipment that
strives to get "above the knee" of the curve and avoids interference
with other spectrum users... rather than trying to win a wireless
"demolition derby"
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