some fundamental limits of unequal error protection
Borade, S.
Nakiboglu, B.
Lizhong Zheng
EECS, MIT, Cambridge, MA
This paper appears in: Information Theory, 2008. ISIT 2008. IEEE International Symposium on Publication Date: 6-11 July 2008
On page(s):
2222
- 2226
Location: Toronto, ON
ISBN: 978-1-4244-2256-2
Digital Object Identifier: 10.1109/ISIT.2008.4595385
Current Version Published: 2008-08-08
Abstract
Various formulations are considered where some information is more important than other and needs better protection. Our information theoretic framework in terms of exponential error bounds provides some fundamental limits and optimal strategies for such problems of unequal error protection. Even for data-rates approaching the channel capacity, it shows how a crucial part of information can be protected with exponential reliability. Channels without feedback are analyzed first, which is useful later in analyzing channels with feedback. A new channel parameter, called the Red-Alert Exponent, is fundamentally important in such problems.
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