2012 Fiscal Year Final Research Report
Development of high-performance signal processing systems by analytical synthesis of high-accuracy digital filter structures
| Project/Area Number |
23760322
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| Research Category |
Grant-in-Aid for Young Scientists (B)
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| Allocation Type | Multi-year Fund |
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| Research Field |
Communication/Network engineering
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| Research Institution | Tohoku University |
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Principal Investigator |
YAMAKI Shunsuke 東北大学, 国際高等研究教育機構, 助教 (10534076)
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| Project Period (FY) |
2011 – 2012
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| Keywords | 信号処理 / ディジタルフィルタ / L_2感度最小実現 / リミットサイクル / 2次モー ド |
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| Research Abstract |
We have derived a general expression of the transfer function of digital filters with all second-order modes equal. For the case of second-order digital filters, the transfer functions can be expressed in closed form. Furthermore, we show that the general expression is obtained by a frequency transformation on a first-order prototype FIR digital filter. Furthermore, we have numerically shown the absence of limit cycles of the minimumL_2-sensitivity realizations subject to L_2-scaling constraints of second-order digital filters.
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