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2003 International Conference on Multimedia and Expo. ICME '03. Proceedings (Cat. No.03TH8698) (2003)
Baltimore, MD, USA
July 6, 2003 to July 9, 2003
ISBN: 0-7803-7965-9
pp: 125-128
Tay-Jyi Lin , Dept. of Electron. Eng., Nat. Chiao Tung Univ., Hsinchu, Taiwan
Tsung-Hsun Yang , Dept. of Electron. Eng., Nat. Chiao Tung Univ., Hsinchu, Taiwan
Chein-Wei Jen , Dept. of Electron. Eng., Nat. Chiao Tung Univ., Hsinchu, Taiwan
ABSTRACT
This paper presents the systematic synthesis of multiplier-less FIR filters with a novel complexity-aware quantization algorithm. Both signed-digit representations and common subexpression elimination (CSE) are investigated to reduce the computational complexity at the bit level. For comparable filter responses, the simulation shows that our approach requires only half (49.06%/spl sim/ 50.94%) additions of the straightforward quantized filters. Both with CSE, our FIR synthesizer has comparable results with the CSD-encoded coefficients, which have the theoretically minimum non-zero terms. Moreover, our approach outperforms CSD in most cases because of the direct control over additions and the zero-overhead insertion of non-zero terms.
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CITATION

T. Lin, C. Jen and T. Yang, "Coefficient optimization for area-effective multiplier-less FIR filters," 2003 International Conference on Multimedia and Expo. ICME '03. Proceedings (Cat. No.03TH8698)(ICME), Baltimore, MD, USA, 2003, pp. 125-128.
doi:10.1109/ICME.2003.1220870
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