بهبود روش تطبيقي براي کاهش نوفه سيگنال ECG تحت شرايط سخت
محورهای موضوعی : مهندسی برق و کامپیوتراحمد آیتالهی 1 * , سيدحجت سبزپوشان 2
1 - دانشگاه علم و صنعت ایران
2 - دانشگاه علم و صنعت ایران
کلید واژه: الگوريتم LMSروش تطبيقي حذف نوفهسيگنال ECG,
چکیده مقاله :
با استفاده از روشي که در اين مقاله ارائه ميگردد، امکان حذف و کاهش نوفه از سيگنال ECG در شرايط کاري سخت و پرنوفه فراهم ميگردد. در اين مقاله با استفاده از الگوريتم بهبود يافته LMS بصورت گامهاي متغير (MVSS) نتايج بهتري نسبت به روش تطبيقي معمولي بدست ميآيد
We present a new adaptive noise cancellation method for ECG noise cancelling in very difficult conditions. This method is based on modified variable step size LMS algorithm. We show that the proposed algorithm is more efficient and the adaption speed is higher than conventional LMS
[1] V. X. Afonoso and J. Tompkins, "ECG beat detection using filter banks," IEEE Trans. Biomed. Eng., vol. 46. no. 2, pp. 192-302, Feb. 1999.
[2] J. Tomas and D. M. Etter, "A new adaptive algorithm to reduce weight fluctuations caused by height variance data, "IEEE Trans. Signal Proc., vol. 40, no. 9, pp. 2324-2327, Sep. 1992.
[3] N. V. Thakor and Yi-Sheng, "Applications of adaptive filtering to ECG analysis: noise cancellation and arrhythmia detection," IEEE Trans. Biomed. Eng., vol. 38, no. 8, pp. 785-794, Aug. 1991.
[4] A. Aiatollahi, S. H. Sabzpoushan, "An adaptive filter for ECG noise cancellation with the use of periodic nature of ECG," in Proc. ICEE 2002.
[5] A. Ruha and S. Sallinen, "A real-time microprocessor QRS detector system with a 1-ms timing accuracy for the measurement of ambulatory HRV," IEEE Trans. Biomed. Eng. vol. 44, no. 3,pp. 159-167, Mar. 1997.
[6] S. Haykin, Adaptive Filter Theory, Prentice-Hall, p. 231, 2002.
[7] R. H. Kwong and E. W. Johnston, "A variable step size LMS algorithm," IEEE Trans. on Signal. Proc., vol. 40, no. 7, pp. 1633-1642, 1992.
[8] MIT-BIH Database, Massachusetts Inst., 2002.
[9] R. S. Maclead and Q. Ni, "Effects of heart position on the body–surface ECG," in Proc. Int. Society for Computerized Electrocardiography Conf., Yosemite, Canada, 2000.