Title :
Canonic signed digit Chebyshev FIR filter design
Author :
Hasan, Yassin M. ; Karam, Lina J. ; Falkinburg, Matt ; Helwig, Art ; Ronning, Matt
Author_Institution :
Dept. of Electr. Eng., Arizona State Univ., Tempe, AZ, USA
fDate :
6/1/2001 12:00:00 AM
Abstract :
A new algorithm is presented for the design of fixed point finite impulse response (FIR) digital filters that can be realized using a minimal number of adders while satisfying both the desired hardware implementation constraints and the frequency domain design constraints. The proposed algorithm makes use of a two-stage search method with a new soft-switching optimization criterion, minimizing the Chebyshev error norm in a discrete canonic signed digit (CSD) space. The proposed design method is implemented as a Matlab-based software package (CSDFIR) that allows the design of both Chebyshev optimal floating point and fixed point CSD FIR filters.
Keywords :
Chebyshev filters; FIR filters; adders; circuit CAD; circuit optimisation; digital filters; fixed point arithmetic; frequency-domain synthesis; search problems; Chebyshev error norm minimization; Chebyshev filter; FIR filter design; Matlab-based software package; adders; discrete canonic signed digit space; fixed point finite impulse response filter; frequency domain design constraints; hardware implementation constraints; optimal floating point filters; soft-switching optimization criterion; two-stage search method; Adders; Algorithm design and analysis; Chebyshev approximation; Design methodology; Digital filters; Finite impulse response filter; Frequency domain analysis; Hardware; Optimization methods; Search methods;
Journal_Title :
Signal Processing Letters, IEEE
