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j.sigpro.2010.06.015.pdf | 552 kB | Adobe PDF | 見る/開く |
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dc.contributor.author | Nagahara, Masaaki | en |
dc.contributor.author | Yamamoto, Y. | en |
dc.contributor.alternative | 永原, 正章 | ja |
dc.date.accessioned | 2010-10-19T00:10:17Z | - |
dc.date.available | 2010-10-19T00:10:17Z | - |
dc.date.issued | 2011-02 | - |
dc.identifier.issn | 0165-1684 | - |
dc.identifier.uri | http://hdl.handle.net/2433/128834 | - |
dc.description.abstract | In this paper, we give a causal solution to the problem of spline interpolation using H∞ optimal approximation. Generally speaking, spline interpolation requires filtering the whole sampled data, the past and the future, to reconstruct the inter-sample values. This leads to non-causality of the filter, and this becomes a critical issue for real-time applications. Our objective here is to derive a causal system which approximates spline interpolation by H∞ optimization for the filter. The advantage of H∞ optimization is that it can address uncertainty in the input signals to be interpolated in design, and hence the optimized system has robustness property against signal uncertainty. We give a closed-form solution to the H∞ optimization in the case of the cubic splines. For higher-order splines, the optimal filter can be effectively solved by a numerical computation. We also show that the optimal FIR (finite impulse response) filter can be designed by an LMI (linear matrix inequality), which can also be effectively solved numerically. A design example is presented to illustrate the result. | en |
dc.format.mimetype | application/pdf | - |
dc.language.iso | eng | - |
dc.publisher | Elsevier B.V. | en |
dc.rights | © 2010 Elsevier B.V. | en |
dc.rights | この論文は出版社版でありません。引用の際には出版社版をご確認ご利用ください。 | ja |
dc.rights | This is not the published version. Please cite only the published version. | en |
dc.subject | Spline functions | en |
dc.subject | Interpolation | en |
dc.subject | H∞ optimization | en |
dc.title | H∞ optimal approximation for causal spline interpolation | en |
dc.type | journal article | - |
dc.type.niitype | Journal Article | - |
dc.identifier.ncid | AA00442591 | - |
dc.identifier.jtitle | Signal Processing | en |
dc.identifier.volume | 91 | - |
dc.identifier.issue | 2 | - |
dc.identifier.spage | 176 | - |
dc.identifier.epage | 184 | - |
dc.relation.doi | 10.1016/j.sigpro.2010.06.015 | - |
dc.textversion | author | - |
dcterms.accessRights | open access | - |
出現コレクション: | 学術雑誌掲載論文等 |
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