Feedback can improve the second-order coding performance in discrete memoryless channels

For a class of discrete memoryless channels, a simple feedback scheme is shown to improve the second-order term in the normal approximation compared with coding without feedback. Conversely, we provide a new, second-moment-based condition for when feedback does not improve the second-order term.

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Bibliographic Details
Published in2014 IEEE International Symposium on Information Theory pp. 2361 - 2365
Main Authors Altug, Yucel, Wagner, Aaron B.
Format Conference Proceeding
LanguageEnglish
Published IEEE 01.06.2014
Subjects
Algebra
Programmable logic arrays
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Summary:For a class of discrete memoryless channels, a simple feedback scheme is shown to improve the second-order term in the normal approximation compared with coding without feedback. Conversely, we provide a new, second-moment-based condition for when feedback does not improve the second-order term.
ISSN:2157-8095
2157-8117
DOI:10.1109/ISIT.2014.6875256