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Low-Cost FIR Filter Designs Based on Faithfully Rounded Truncated Multiple Constant Multiplication/Accumulation

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3 Author(s)
Shen-Fu Hsiao ; Dept. of Comput. Sci. & Eng., Nat. Sun Yat-sen Univ., Kaohsiung, Taiwan ; Jun-Hong Zhang Jian ; Ming-Chih Chen

Low-cost finite impulse response (FIR) designs are presented using the concept of faithfully rounded truncated multipliers. We jointly consider the optimization of bit width and hardware resources without sacrificing the frequency response and output signal precision. Nonuniform coefficient quantization with proper filter order is proposed to minimize total area cost. Multiple constant multiplication/accumulation in a direct FIR structure is implemented using an improved version of truncated multipliers. Comparisons with previous FIR design approaches show that the proposed designs achieve the best area and power results.

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Circuits and Systems II: Express Briefs, IEEE Transactions on  (Volume:60 ,  Issue: 5 )