Abstract
In this paper, we study the capacity of unifilar finite-state channels. We derive upper bounds that are based on the dual capacity bounding technique using test distributions with memory on directed Q-graphs. The bounds hold for any choice of graph-based test distribution and result in a multi-letter expression. The computability of the upper bound is shown via a novel dynamic programming formulation that can be efficiently evaluated. We further show that the bounds can be simplified to simple single-letter expressions by solving the corresponding Bellman equation explicitly. In particular, for the Ising and Trapdoor channels, we provide simple analytic upper bounds which outperform all previous bounds from the literature.
Original language | English |
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Title of host publication | 2019 IEEE International Symposium on Information Theory, ISIT 2019 - Proceedings |
Publisher | Institute of Electrical and Electronics Engineers Inc. |
Pages | 1892-1896 |
Number of pages | 5 |
ISBN (Electronic) | 9781538692912 |
DOIs | |
State | Published - Jul 2019 |
Externally published | Yes |
Event | 2019 IEEE International Symposium on Information Theory, ISIT 2019 - Paris, France Duration: 7 Jul 2019 → 12 Jul 2019 |
Publication series
Name | IEEE International Symposium on Information Theory - Proceedings |
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Volume | 2019-July |
ISSN (Print) | 2157-8095 |
Conference
Conference | 2019 IEEE International Symposium on Information Theory, ISIT 2019 |
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Country/Territory | France |
City | Paris |
Period | 7/07/19 → 12/07/19 |
Bibliographical note
Publisher Copyright:© 2019 IEEE.