NDLI: Design of FIR Nyquist filters with low group delay

Content Provider	IEEE Xplore Digital Library
Author	Zhang, X. Yoshikawa, T.
Copyright Year	1991
Abstract	A new method is proposed for designing FIR Nyquist filters with zero-crossing impulse response and low group delay. It is first shown that FIR Nyquist filters that satisfy the zero-crossing time-domain condition have a frequency response property where both the magnitude and phase responses in the passband are dependent on the stopband response. Therefore, the design problem will become a magnitude approximation in the stopband. The proposed procedure is based on the formulation of a linear problem by using the multiple Remez exchange algorithm in the stopband directly. Hence, the filter coefficients can be computed by solving linear equations, and the optimal solution with an equiripple stopband response is easily obtained after applying an iteration procedure. Although the proposed Nyquist filters have an approximate linear phase response, its group delay is lower than the conventional FIR Nyquist filters. The proposed procedure is computationally efficient because it only solves a set of linear equations. Finally, the characteristics of the low-delay FIR Nyquist filters are examined, and the performance is compared with the conventional FIR Nyquist filters.
Sponsorship	IEEE Signal Processing Society
Starting Page	1454
Ending Page	1458
Page Count	5
File Size	183976
File Format	PDF
ISSN	1053587X
Volume Number	47
Issue Number	5
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	1999-05-01
Publisher Place	U.S.A.
Access Restriction	One Nation One Subscription (ONOS)
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Finite impulse response filter Delay IIR filters Filter bank Nonlinear filters Equations Signal processing algorithms Design methodology Digital filters Frequency response
Content Type	Text
Resource Type	Article
Subject	Signal Processing Electrical and Electronic Engineering

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