| Paper Abstract and Keywords |
| Presentation |
2020-05-29 09:30
Accuracy improvement of instantaneous frequency estimation using variable FIR filter with transmission zeros
Keisuke Takao, Takahiro Natori (TUS), Toma Miyata (Salesian Polytechnic), Naoyuki Aikawa (TUS) |
| Abstract |
(in Japanese) |
(See Japanese page) |
| (in English) |
Frequency estimation of sine wave signals has been studied in a wide range of fields.One of the methods is to use instantaneous frequency.In this method, a complex signal called an analysis signal is generated using a Hilbert transformer, and the instantaneous frequency is obtained by differentiating the instantaneous phase of this analysis signal with respect to time.However, since the Hilbert transformer designed with a finite order has ripple as an approximation error, the estimated instantaneous frequency contains an oscillatory component in addition to the true frequency.This error can be suppressed by increasing the order of the Hilbert transducer, but the increase in the order results in an increase in the delay for obtaining the instantaneous frequency.In this paper, the vibration component of the instantaneous frequency component generated by the finite order Hilbert transformer is clarified.Then, it is shown that the instantaneous frequency can be estimated with high accuracy by removing the vibration component using a variable FIR filter with a transmission zeros. |
| Keyword |
(in Japanese) |
(See Japanese page) |
| (in English) |
Frequency estimation / Hilbert transformer / variable filter / / / / / |
| Reference Info. |
ITE Tech. Rep. |
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| Conference Information |
| Committee |
IEICE-MI IEICE-IE IEICE-SIP IEICE-BioX IST ME |
| Conference Date |
2020-05-28 - 2020-05-29 |
| Place (in Japanese) |
(See Japanese page) |
| Place (in English) |
Online |
| Topics (in Japanese) |
(See Japanese page) |
| Topics (in English) |
Image and signal processing/analysis/AI technology, and their application |
| Paper Information |
| Registration To |
IEICE-SIP |
| Conference Code |
2020-05-MI-IE-SIP-BioX-IST-ME |
| Language |
Japanese |
| Title (in Japanese) |
(See Japanese page) |
| Sub Title (in Japanese) |
(See Japanese page) |
| Title (in English) |
Accuracy improvement of instantaneous frequency estimation using variable FIR filter with transmission zeros |
| Sub Title (in English) |
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| Keyword(1) |
Frequency estimation |
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Hilbert transformer |
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variable filter |
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| 1st Author's Name |
Keisuke Takao |
| 1st Author's Affiliation |
Tokyo University of Science (TUS) |
| 2nd Author's Name |
Takahiro Natori |
| 2nd Author's Affiliation |
Tokyo University of Science (TUS) |
| 3rd Author's Name |
Toma Miyata |
| 3rd Author's Affiliation |
Salesian Polytechnic (Salesian Polytechnic) |
| 4th Author's Name |
Naoyuki Aikawa |
| 4th Author's Affiliation |
Tokyo University of Science (TUS) |
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| Speaker |
Author-1 |
| Date Time |
2020-05-29 09:30:00 |
| Presentation Time |
20 minutes |
| Registration for |
IEICE-SIP |
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| Volume (vol) |
vol.44 |
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