Title :
The design of peak constrained least squares FIR filters with low complexity finite precision coefficients
Author :
Fox, W. ; Turner, L.E.
Author_Institution :
Dept. of Electr. & Comput. Eng., Calgary Univ., Alta., Canada
Abstract :
A method for the design of peak constrained least squares (PCLS) finite duration impulse response (FIR) digital filters with low complexity finite precision coefficients (FPC) based on Adams optimality criterion and an efficient local search is presented. Simple quantization of the infinite precision coefficients typically leads to filter designs which fail to meet the frequency response, passband to stopband energy ratio (PSR), and coefficient complexity (number of coefficient adders and subtracters) specifications. It is shown that it is possible to design a filter with an acceptable PSR that meets the frequency response specification while using a specified number of adders and subtracters
Keywords :
FIR filters; VLSI; adders; digital filters; least squares approximations; Adams optimality criterion; adders; coefficient complexity; digital filters; efficient local search; frequency response specification; infinite precision coefficients; low complexity finite precision coefficients; passband to stopband energy ratio; peak constrained least squares FIR filters; subtracters; Costs; Design methodology; Finite impulse response filter; Flexible printed circuits; Frequency response; Hardware; Least squares methods; Passband; Quantization; Very large scale integration;
Conference_Titel :
Circuits and Systems, 2001. ISCAS 2001. The 2001 IEEE International Symposium on
Conference_Location :
Sydney, NSW
Print_ISBN :
0-7803-6685-9
DOI :
10.1109/ISCAS.2001.921143
