ARLA/CLUSTER: Projeto de sistema interestrelar de comunicações eficiente

[João Costa > CT1FBF]

End-to-end interstellar communication system design for power efficiency

*Peter Ellis VK1PE* has found an interesting academic analysis of the
long-distance communication problem.

Peter VK1PE:
In a recent paper, *'End-to-end interstellar communication system design
for power efficiency'*, *David G. Messerschmitt* of the University of
California at Berkeley proposes various solutions to the information rate
vs. average power trade-off.

While this paper discusses at length the SETI problem, it is probably a
good read for those wanting to understand the place of channel coding and
other techniques. He discusses five power-efficient design principles can
asymptotically approach the fundamental limit on the information rate, and
in practice increase the power efficiency by three to four orders of
magnitude. The most important is to trade higher bandwidth for lower
average power.

Messerschmitt is no lightweight in communications: Fellow of the IEEE,
a Member of the National Academy of Engineering, and a recipient of the
IEEE Alexander Graham Bell Medal; Professor Emeritus and former Chair of
Electrical Engineering and Computer Sciences (EECS) at the University of
California at Berkeley.

His paper is quite readable, but at 237 pages, download it and read on a
screen.

Reference:
*http://arxiv.org/abs/1305.4684* <http://arxiv.org/abs/1305.4684> -
"End-to-end interstellar communication system design for power efficiency",
David G. Messerschmitt, 21 May 2013

Fonte: Wireless Institute of Australia <http://www.wia.org.au/>
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