| Budget Amount *help |
¥2,790,000 (Direct Cost: ¥2,400,000、Indirect Cost: ¥390,000)
Fiscal Year 2009: ¥910,000 (Direct Cost: ¥700,000、Indirect Cost: ¥210,000)
Fiscal Year 2008: ¥780,000 (Direct Cost: ¥600,000、Indirect Cost: ¥180,000)
Fiscal Year 2007: ¥1,100,000 (Direct Cost: ¥1,100,000)
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| Research Abstract |
We have proposed a design algorithm for the finite wordlength digital filters based on the lower bound estimation using the Lagrange multiplier method. Next, we have applied this method to the error feedback network which is useful for the reduction of product roundoff noise of digital filters. Also, we have shown the design algorithm for the FIR digital filters with the shift operation circuits and single multiplier by combining the Lagrange multiplier method and the branch-and-bound method. We have discussed the effectiveness of the above methods based on the result of computer simulation. We have considered the digital watermarking as the application of the digital filters.
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