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Paper Abstract and Keywords
Presentation 2006-03-06 15:55
A trick for accurate differentiation at low sampling rates
Ishtiaq Rasool Khan, Masahiro Okuda (Kitakyushu Univ.)
Abstract (in Japanese) (See Japanese page) 
(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) 
(in English) FIR Digital Differentiators / Maximally Linear / Linear Phase Digital Filters / Explicit Formulas / / / /  
Reference Info. IEICE Tech. Rep., vol. 105, no. 635, SIP2005-152, pp. 61-66, March 2006.
Paper # SIP2005-152 
Date of Issue 2006-02-27 (CAS, SIP, CS) 
ISSN Print edition: ISSN 0913-5685
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Conference Information
Committee CAS SIP CS  
Conference Date 2006-03-06 - 2006-03-07 
Place (in Japanese) (See Japanese page) 
Place (in English) Univ of Ryukyu 
Topics (in Japanese) (See Japanese page) 
Topics (in English) Network processors, signal processing for communications, coding theory, etc. 
Paper Information
Registration To SIP 
Conference Code 2006-03-CAS-SIP-CS 
Language English 
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) FIR Digital Differentiators  
Keyword(2) Maximally Linear  
Keyword(3) Linear Phase Digital Filters  
Keyword(4) Explicit Formulas  
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Keyword(8)  
1st Author's Name Ishtiaq Rasool Khan  
1st Author's Affiliation The University of Kitakyushu (Kitakyushu Univ.)
2nd Author's Name Masahiro Okuda  
2nd Author's Affiliation The University of Kitakyushu (Kitakyushu Univ.)
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Speaker Author-1 
Date Time 2006-03-06 15:55:00 
Presentation Time 25 minutes 
Registration for SIP 
Paper # CAS2005-106, SIP2005-152, CS2005-99 
Volume (vol) vol.105 
Number (no) no.633(CAS), no.635(SIP), no.637(CS) 
Page pp.61-66 
#Pages
Date of Issue 2006-02-27 (CAS, SIP, CS) 


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