Title :
Efficient Wide-Band FIR LTI Systems Derived Via Multi-Rate Techniques and Sparse Bandpass Filters
Author :
Sheikh, Z.U. ; Johansson, Hakan
Author_Institution :
Dept. of Electr. Eng., Linkoping Univ., Linköping, Sweden
fDate :
7/1/2012 12:00:00 AM
Abstract :
This correspondence introduces efficient realizations of wide-band LTI systems. They are single-rate realizations but derived via multi-rate techniques and sparse bandpass filters. The realizations target mid-band systems with narrow don´t-care bands near the zero and Nyquist frequencies. Design examples for fractional-order differentiators demonstrate substantial complexity savings as compared to the conventional minimax-optimal direct-form realizations.
Keywords :
FIR filters; band-pass filters; Nyquist frequencies; efficient wide-band FIR LTI systems; finite-length impulse response frequency-selective filters; fractional-order differentiators; midband systems; minimax-optimal direct-form realizations; multirate techniques; single-rate realizations; sparse bandpass filters; Approximation methods; Complexity theory; Delay; Filtering theory; Finite impulse response filter; Niobium; Bandpass filters; finite-length impulse response systems; fractional-order differentiators; frequency-response masking techniques; multi-rate techniques; sparse filters;
Journal_Title :
Signal Processing, IEEE Transactions on
DOI :
10.1109/TSP.2012.2194712
