Title :
The design of a lossless discrete integrator digital filter with low complexity coefficients
Author :
Fox, T.W. ; Turner, L.E.
Author_Institution :
Dept. of Electr. & Comput. Eng., Calgary Univ., Alta., Canada
fDate :
6/23/1905 12:00:00 AM
Abstract :
A method for the design of a lossless discrete integrator (LDI) digital filter with low complexity finite precision coefficients (FPC) based on a discrete constrained optimization formulation and constrained simulated annealing (CSA) is presented. Simple quantization of floating point precision coefficients and other unconstrained optimization methods cannot precisely control the number of required coefficient adders and subtractors. It is shown that it is possible to control the coefficient complexity (the number of coefficient adders and subtractors) while still meeting the passband ripple specifications and achieving a small stopband ripple. Extremely low coefficient complexity filters can be achieved at the expense of a larger stopband ripple
Keywords :
circuit optimisation; computational complexity; digital filters; integrating circuits; network synthesis; simulated annealing; coefficient adders; coefficient subtractors; constrained simulated annealing; discrete constrained optimization; floating point precision coefficients quantization; lossless discrete integrator digital filter; low complexity finite precision coefficients; passband ripple specifications; stopband ripple; unconstrained optimization; Adders; Constraint optimization; Design methodology; Design optimization; Digital filters; Flexible printed circuits; Optimization methods; Passband; Quantization; Simulated annealing;
Conference_Titel :
Communications, Computers and signal Processing, 2001. PACRIM. 2001 IEEE Pacific Rim Conference on
Conference_Location :
Victoria, BC
Print_ISBN :
0-7803-7080-5
DOI :
10.1109/PACRIM.2001.953696
