Bufferless compression of asynchronously sampled ECG signals in cubic hermitian vector space

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01A - Beitrag in wissenschaftlicher Zeitschrift
Herausgeber:innen
Herausgeber:in (Körperschaft)
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Übergeordnetes Werk
IEEE Transactions on Biomedical Engineering
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Reihe / Serie
Reihennummer
Jahrgang / Band
62
Ausgabe / Nummer
12
Seiten / Dauer
2878-2887
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IEEE
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Zusammenfassung
Asynchronous level crossing sampling analog-to-digital converters (ADCs) are known to be more energy efficient and produce fewer samples than their equidistantly sampling counterparts. However, as the required threshold voltage is lowered, the number of samples and, in turn, the data rate and the energy consumed by the overall system increases. In this paper, we present a cubic Hermitian vector-based technique for online compression of asynchronously sampled electrocardiogram signals. The proposed method is computationally efficient data compression. The algorithm has complexity O(n), thus well suited for asynchronous ADCs. Our algorithm requires no data buffering, maintaining the energy advantage of asynchronous ADCs. The proposed method of compression has a compression ratio of up to 90% with achievable percentage root-mean-square difference ratios as a low as 0.97. The algorithm preserves the superior feature-to-feature timing accuracy of asynchronously sampled signals. These advantages are achieved in a computationally efficient manner since algorithm boundary parameters for the signals are extracted a priori.
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ISBN
ISSN
0018-9294
1558-2531
Sprache
Englisch
Während FHNW Zugehörigkeit erstellt
Nein
Zukunftsfelder FHNW
Publikationsstatus
Veröffentlicht
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Peer-Review der ganzen Publikation
Open Access-Status
Closed
Lizenz
Zitation
THANKS, Marisa, Thomas NIEDERHAUSER, Andreas HAEBERLIN, Reto WILDHABER, Rolf VOGEL, Marcel JACOMET und Josef GOETTE, 2015. Bufferless compression of asynchronously sampled ECG signals in cubic hermitian vector space. IEEE Transactions on Biomedical Engineering. 2015. Bd. 62, Nr. 12, S. 2878–2887. DOI 10.1109/tbme.2015.2449901. Verfügbar unter: https://irf.fhnw.ch/handle/11654/46820