Title :
A new design for sample-rate converters
Author :
Nagahara, Masaaki ; Yamamoto, Yutaka
Author_Institution :
Dept. of Appl. Anal. & Complex Dynamical Syst., Kyoto Univ., Japan
Abstract :
This paper proposes a new design methodology for digital filters, interpolators/decimators and sample-rate converters, based on the modern sampled-data control theory. In contrast to the conventional filter designs where the methods are mostly based on frequency domain approximation techniques, the proposed method makes use of the sampled-data H∞ control theory, thereby allowing for optimizing the intersample behavior and aliasing effects. The novel feature here is that the proposed method can optimize the analog-domain performance over all frequency ranges, thereby guaranteeing a desirable performance without breaking the design problem into several different steps, such as linear phase characteristic, optimal attenuation level design, etc. A design example is presented to show the advantages of the present method
Keywords :
H∞ control; convertors; digital filters; interpolation; sampled data systems; aliasing optimization; analog-domain performance; decimators; digital filters; frequency domain approximation techniques; interpolators; intersample behavior optimization; linear phase characteristic; optimal attenuation level design; sample-rate converters; sampled-data H∞ control theory; Control theory; Design methodology; Design optimization; Filtering theory; Filters; Frequency; Hydrogen; Sampling methods; Signal processing; Signal sampling;
Conference_Titel :
Decision and Control, 2000. Proceedings of the 39th IEEE Conference on
Conference_Location :
Sydney, NSW
Print_ISBN :
0-7803-6638-7
DOI :
10.1109/CDC.2001.914577