DocumentCode :
2124293
Title :
Efficient parallel FIR filter implementations using frequency spectrum characteristics
Author :
Chung, Jin-Gyun ; Kim, Yong-Bae ; Jeong, Hang-Geun ; Parhi, Keshab K. ; Wang, Zhongfeng
Author_Institution :
Dept. of Inf. & Commun. Eng., Chonbuk Nat. Univ., Chonju, South Korea
Volume :
5
fYear :
1998
fDate :
31 May-3 Jun 1998
Firstpage :
354
Abstract :
Parallel (or block) FIR digital filters can be used either for high-speed or low-power (with reduced supply voltage) applications. Traditional parallel filter implementations cause linear increase in the hardware cost with respect to the block size. Recently, an efficient parallel FIR filter implementation technique requiring a less-than linear increase in the hardware cost was proposed. This paper makes two contributions. First the filter spectrum characteristics are exploited to select the best fast filter structures. Second, a novel block filter quantization algorithm is introduced. Using filter benchmarks, it is shown that the use of the appropriate fast FIR filter structures and the proposed quantization scheme can result in reduction in the number of binary adders ranging from 4% to 24% and an average reduction of about 10%. Furthermore, the power consumption of these filters is reduced by 14.8% on average and ranges from 10% to 20%
Keywords :
FIR filters; digital filters; filtering theory; parallel processing; quantisation (signal); binary adders reduction; block FIR digital filters; block filter quantization algorithm; fast filter structures selection; frequency spectrum characteristics; parallel FIR filter implementations; power consumption reduction; Circuits; Concurrent computing; Costs; Digital filters; Energy consumption; Finite impulse response filter; Frequency; Hardware; Nonlinear filters; Voltage;
fLanguage :
English
Publisher :
ieee
Conference_Titel :
Circuits and Systems, 1998. ISCAS '98. Proceedings of the 1998 IEEE International Symposium on
Conference_Location :
Monterey, CA
Print_ISBN :
0-7803-4455-3
Type :
conf
DOI :
10.1109/ISCAS.1998.694489
Filename :
694489
Link To Document :
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