Fundamental Properties of Non-Negative Impulse Response Filters

• Published in: IEEE transactions on circuits and systems. I, Regular papers Vol. 57; no. 6; pp. 1338 - 1347
• Main Authors: Yuzhe Liu, Bauer, Peter H
• Format: Journal Article
• Language: English
• Published: New York IEEE 01.06.2010; The Institute of Electrical and Electronics Engineers, Inc. (IEEE)
• Subjects: Attenuation; Character recognition; Charge coupled devices; Circuits; Constrictions; Digital filters; Filter; Finite impulse response filter; Frequency domain analysis; Frequency domains; Frequency response; Frequency spectrum; frequency-domain bounds; Gain; Impulse response; non-negative impulse response (NNIR); Passband; Time domain analysis; time-domain bounds

This paper provides insights into some fundamental properties of non-negative impulse response (NNIR) digital filters. In particular, performance restrictions in the frequency domain due to the non-negativity constraint are investigated. It is shown that the gain drop in the frequency response near...