Title :
IIR partial response digital filter design with equiripple stopband attenuation (class I)
Author :
Chaisawadi, Ake ; Takebe, Tsuyoshi ; Matsumoto, Toyoji ; Nishikawa, Kiyoshi
Author_Institution :
King Mongkut´´s Inst. of Technol., Bangkok, Thailand
fDate :
10/1/1990 12:00:00 AM
Abstract :
The design of infinite impulse response (IIR) digital transmitter and receiver filters of class I is described. The filters are designed to be quasi-matched; each has a maximally flat delay polynomial as the denominator. Each filter is designed to have an equiripple stopband attenuation as well as low, uncontrolled intersymbol interference (ISI) when cascaded. In order to get low ISI and high stopband attenuation, it is necessary for the band-edge frequency to be slightly larger than the ideal value. A brief comparison with finite impulse response filter design is made. By IIR design, the filter order and group delay are reduced about 20% and 30% respectively, but the ISI is somewhat increased
Keywords :
digital filters; filtering and prediction theory; frequency response; intersymbol interference; polynomials; transfer functions; IIR partial response; band-edge frequency; class I; denominator; digital filter design; equiripple stopband attenuation; filter order reduction; group delay reduction; infinite impulse response; intersymbol interference; low ISI; maximally flat delay polynomial; quasi-matched; receiver filters; transmitter filters; Attenuation; Bandwidth; Circuits; Data communication; Delay; Digital filters; Finite impulse response filter; IIR filters; Intersymbol interference; Transmitters;
Journal_Title :
Circuits and Systems, IEEE Transactions on
