Abstract
The filtering problem for finite-state Markov chains is revisited in the low signal-to-noise regime. We give a description of conditional measure concentration around the invariant distribution of the signal and derive asymptotic expressions for the performance indices of the minimum mean square error (MMSE) and minimum a posteriori probability (MAP) filtering estimates.
| Original language | English |
|---|---|
| Pages (from-to) | 4267-4272 |
| Number of pages | 6 |
| Journal | IEEE Transactions on Information Theory |
| Volume | 52 |
| Issue number | 9 |
| DOIs | |
| State | Published - Sep 2006 |
| Externally published | Yes |
Bibliographical note
Funding Information:Manuscript received September 23, 2005; revised May 18, 2006. The research was supported by a grant from the Israel Science Foundation. The author is with the Department of Mathematics, The Weizmann Institute of Science, Rehovot 76100, Israel (e-mail: [email protected]). Communicated by X. Wang, Associate Editor for Detection and Estimation. Digital Object Identifier 10.1109/TIT.2006.880042
Keywords
- Error asymptotic
- Hidden Markov models
- Nonlinear filtering
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