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Quantized Coefficient F.I.R. Filter for the Design of Filter Bank

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Author(s): Rajeev Singh Dohare1 , Prof. Shilpa Datar

Journal: International Journal of Engineering Trends and Technology
ISSN 2231-5381

Volume: 4;
Issue: 8;
Start page: 3271;
Date: 2013;
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Keywords: -FIR filter | filter bank | rounding

ABSTRACT
This paper presents a very simple and efficient Quantized coefficient finite impulse response (FIR) low pass filter design procedure. This involves approximation of a quantized coefficient FIR filter by rounding operation to design a filter bank. The prototype filter is designed using rounding technique to provide quantized coefficient FIR filter which is computationally efficient. The rounding factors, requiring minimum to maximum number of multipliers, are used to show the performance of the designed filter bank. In that way the filter is based on combining one simple filter with integer coefficients. Our analysis indicates that utilizing this approach the required numbers of total non-zero bits become quitelow and less multiplier and adders will be employed in the design of filter bank to make it computationally efficient.
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