Factorable FIR Nyquist filters with least stopband energy undersidelobe level constraints

Authors:
M. Liu;C.J. Zarowski;F.W. Fairman
Affiliations:
Dept. of Electr. & Comput. Eng., Queen's Univ., Kingston, Ont.;-;-
Venue:
IEEE Transactions on Signal Processing
Year:
2000

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Abstract

Spectrally factorable Nyquist filters are used in data communications to avoid intersymbol interference. An approach is developed for obtaining a Nyquist filter that is factorable having the smallest stopband energy for a given sidelobe level. The resulting constrained minimization problem is solved efficiently and reliably using the Goldfarb-Idnani (1983) algorithm. Some examples are presented comparing the present method with a previous approach from the literature