| Presentation | 2006-03-06 A trick for accurate differentiation at low sampling rates Ishtiaq Rasool KHAN, Masahiro OKUDA, |
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| Abstract(in Japanese) | (See Japanese page) |
| Abstract(in English) | Digital differentiators are an important type of digital filters which find many applications in instrumentation and control. The performance of the available designs of digital differentiators is poor in the higher frequency band, as compared to that in the lower band. Therefore, for accurate differentiation, the input signal needs to be sampled at higher sampling rates, to restrict the signal have all the information in the lower frequency band. Higher sampling rate needs higher computational and storage burden, and moreover, in certain cases, we don't have control over the sampling frequency. A possible solution could be upsampling the signal before feeding it to the differentiator; however, upsampling would introduce its own inaccuracies. In this paper, we study digital differentiators more closely, and find the minimum sampling rates that would ensure determination of derivatives at higher accuracies. The effect of the inaccuracies introduced by upsampling, on the output of the differentiator is also investigated. |
| Keyword(in Japanese) | (See Japanese page) |
| Keyword(in English) | Maximally Linear / FIR Digital Differentiators / Linear Phase Digital Filter / Explicit Formulas |
| Paper # | CAS2005-106,SIP2005-152,CS2005-99 |
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| Conference Information | |
| Committee | CS |
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| Conference Date | 2006/2/27(1days) |
| Place (in Japanese) | (See Japanese page) |
| Place (in English) | |
| Topics (in Japanese) | (See Japanese page) |
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| Paper Information | |
| Registration To | Communication Systems (CS) |
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| Language | ENG |
| Title (in Japanese) | (See Japanese page) |
| Sub Title (in Japanese) | (See Japanese page) |
| Title (in English) | A trick for accurate differentiation at low sampling rates |
| Sub Title (in English) | |
| Keyword(1) | Maximally Linear |
| Keyword(2) | FIR Digital Differentiators |
| Keyword(3) | Linear Phase Digital Filter |
| Keyword(4) | Explicit Formulas |
| 1st Author's Name | Ishtiaq Rasool KHAN |
| 1st Author's Affiliation | Department of Information and Media Sciences, The University of Kitakyushu:Collaboration Center, Kitakyushu Foundation for the Advancement of Industry, Science and Technology() |
| 2nd Author's Name | Masahiro OKUDA |
| 2nd Author's Affiliation | Department of Information and Media Sciences, The University of Kitakyushu |
| Date | 2006-03-06 |
| Paper # | CAS2005-106,SIP2005-152,CS2005-99 |
| Volume (vol) | vol.105 |
| Number (no) | 637 |
| Page | pp.pp.- |
| #Pages | 6 |
| Date of Issue | |