Estimation of Baseline Wander Characteristics in ECG Signals Using Adaptive Transversal Filter and Lomb’s Periodogram Analysis

• Autorzy: Bakhshi A. D. , Ahmed A. , Gulfam S. M. , Khaqan A. , Yasin A. , Iqbal S. , Riaz S. , Jamil M. , Khawaja A. , Riaz R. A.

Warianty tytułu

PL

Estymacja charakterystyki przemieszczenia osi podstawy dla sygnałów EKG z wykorzystaniem filtru adaptacyjnego poprzecznego i analizy periodogramem Lomb’a

• Języki publikacji: EN

Abstrakty

EN

A new technique is proposed to estimate the frequency and amplitude of baseline wander in ECG signals. The estimation has been performed in two stages. In the first stage, a QRS detector detects R peaks and signal samples between consecutive R peaks are passed through a weighted average adaptive filter. The cut-off frequency and order of the filter depends upon the time domain characteristics of the input samples and is automatically updated for each RR interval. In the second stage, Lomb’s periodogram is utilized to analyse the frequency response of the resultant unevenly sampled time series for estimating the baseline frequencies. These frequencies are then used to demodulate the signal for estimation of respective amplitudes. Results have been obtained using synthetic ECG signals with artificially introduced baseline wander containing single or multiple frequencies. The performance of the technique is evaluated by extracting baseline wander through three standard techniques and comparing the estimation errors.

PL

W artykule opisano propozycje estymatora częstotliwosci i amplitudy wahań osi podstawy dla sygnałów w badaniu EKG. Estymacja przebiega w dwóch etapach. Najpierw detektor QRS wykrywa impulsy R, a próbki sygnałów poddawane są filtracji w filtrze adaptacyjnym. W drugim kroku, korzystając z periodogramu Lomb’a, analizowana jest odpowiedź częstotliwosciowa będąca w postaci nierównomiernie pobieranych próbek. Tym sposobem uzyskuje się estymację częstotliwości odniesienia. Działanie algorytmu poddano weryfikacji na bazie symulowanych sygnałów EKG i porównano z trzema standardowymi technikami.

Słowa kluczowe

EN

electrocardiogram; baseline wander; ECG

PL

elektrokardiogram; estymacja; EKG

• Wydawca: Wydawnictwo SIGMA-NOT
• Czasopismo: Przegląd Elektrotechniczny
• Rocznik: 2013
• Tom: R. 89, nr 5
• Strony: 107--110
• Opis fizyczny: Bibliogr. 18 poz., rys., tab.

Twórcy

autor

Bakhshi A. D.

• Department of Computer Science and Engineering, University of Engineering and Technology, Lahore

autor

Ahmed A.

• Department of Electrical Engineering, COMSATS Institute of Information Technology, Islamabad

autor

Gulfam S. M.

• Department of Electrical Engineering, COMSATS Institute of Information Technology, Islamabad

autor

Khaqan A.

• Department of Electrical Engineering, COMSATS Institute of Information Technology, Islamabad

autor

Yasin A.

• Department of Electrical Engineering, COMSATS Institute of Information Technology, Islamabad

autor

Iqbal S.

• Department of Electrical Engineering, COMSATS Institute of Information Technology, Islamabad

autor

Riaz S.

• Department of Electrical Engineering, COMSATS Institute of Information Technology, Islamabad

autor

Jamil M.

• University of Science and Technology, Islamabad

autor

Khawaja A.

• Department of Electrical Engineering, COMSATS Institute of Information Technology, Islamabad

autor

Riaz R. A.

• Department of Electrical Engineering, COMSATS Institute of Information Technology, Islamabad
• School of ECS, University of Southampton

Bibliografia

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• [4] Sornmo L and Laguna P 2005b Bioelectric Signal Processing in Cardiac and Neurological Applications Elsevier Academic Press Amsterdam.
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