DocumentCode :
1205092
Title :
Pipelined array-based FIR filter folding
Author :
Bougas, Paul ; Kalivas, Paraskevas ; Tsirikos, Andreas ; Pekmestzi, Kiamal Z.
Author_Institution :
Fac. of Electr. & Comput. Eng., Nat. Tech. Univ. of Athens, Greece
Volume :
52
Issue :
1
fYear :
2005
Firstpage :
108
Lastpage :
118
Abstract :
The elaborate design of folded finite-impulse response (FIR) filters based on pipelined multiplier arrays is presented in this paper. The design is considered at the bit-level and the internal delays of the pipelined multiplier array are fully exploited in order to reduce hardware complexity. Both direct and transposed FIR filter forms are considered. The carry-save and the carry-propagate multiplier arrays are studied for the filter implementations. Partially folded architectures are also proposed which are implemented by cascading a number of folded FIR filters. The proposed schemes are compared as to the aspect of hardware complexity with a straightforward implementation of a folded FIR filter based on the pipelined Wallace Tree multiplier. The comparison reveals that the proposed schemes require 20%-30% less hardware. Finally, efficient implementation of partially folded FIR filter circuits is presented when constraints in area, power consumption and clock frequency are given.
Keywords :
FIR filters; carry logic; multiplying circuits; systolic arrays; trees (mathematics); FIR filter circuits; carry-propagate multiplier arrays; carry-save multiplier arrays; digital filters; folded finite-impulse response filters; multiplying circuits; partially folded architectures; pipelined Wallace tree multiplier; pipelined array-based FIR filter folding; pipelined multiplier arrays; systolic arrays; Circuits; Clocks; Delay; Digital signal processing; Energy consumption; Finite impulse response filter; Frequency; Hardware; Pipeline processing; Throughput;
fLanguage :
English
Journal_Title :
Circuits and Systems I: Regular Papers, IEEE Transactions on
Publisher :
ieee
ISSN :
1549-8328
Type :
jour
DOI :
10.1109/TCSI.2004.838542
Filename :
1377547
Link To Document :
بازگشت