Methods for Avoiding the Checkerboard Distortion Caused by Finite Word Length Error in Multirate System
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概要
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We propose two methods for avoiding the checkerboard distortion which is caused by finite word length error. The first method derives the bit length of filter coefficients required for avoiding the checkerboard distortion under a certain word length. In the second method, the checkerboard distortion can be avoided by using the cascade structure which consists of zero-hold kernel and a time-invariant filter factorized from a filter with structure for avoiding the checkerboard distortion under linear systems. It is demonstrated by simulations that we can avoid the checkerboard distortion by using these proposed methods.
- 2010-03-01
著者
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Kiya Hitoshi
Department Of Information And Communication Systems Engineering Tokyo Metropolitan University
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Kiya Hitoshi
Department Of Electrical Engineering Graduate School Of Tokyo Metropolitan University
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Iwahashi Masahiro
Department Of Electrical Engineering Nagaoka University Of Technology
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Iwahashi Masahiro
Department Of Electrical Engineering Faculty Of Engineering Nagaoka University Of Technology
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Iwai Hiroaki
Department Of Information And Communication Systems Engineering Tokyo Metropolitan University
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Kiya Hitoshi
Department Of Electrical Engineering Graduate School Of Engineering Tokyo Metropolitan University
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