Title :
Multiplierless implementations of adaptive FIR filters
Author :
DeBrunner, Linda S. ; Wang, Yunhua ; DeBrunner, Victor ; Tull, M.
Author_Institution :
Sch. of Electr. & Comput. Eng., Oklahoma Univ., Norman, OK, USA
Abstract :
Implementations of adaptive filters using field programmable gate arrays require the ability to change the coefficient values of the filter based on the adaptation algorithm. Multiplierless filter designs rely on a priori knowledge of the coefficient values to implement the filter using hard-wired shifts and additions. We describe a multiplierless approach to adaptive filter implementation that reduces the complexity from quadratic to linear in the number of bits.
Keywords :
FIR filters; adaptive filters; differential pulse code modulation; digital filters; field programmable gate arrays; least mean squares methods; adaptation algorithm; adaptive FIR filter; field programmable gate array; hard-wired shift; multiplierless filter design; Adaptive arrays; Adaptive filters; Convolution; Field programmable gate arrays; Finite impulse response filter; Least squares approximation; Mean square error methods; Noise cancellation; Quantization; System identification;
Conference_Titel :
Signals, Systems and Computers, 2004. Conference Record of the Thirty-Seventh Asilomar Conference on
Print_ISBN :
0-7803-8104-1
DOI :
10.1109/ACSSC.2003.1292377
