지원사업
학술연구/단체지원/교육 등 연구자 활동을 지속하도록 DBpia가 지원하고 있어요.
커뮤니티
연구자들이 자신의 연구와 전문성을 널리 알리고, 새로운 협력의 기회를 만들 수 있는 네트워킹 공간이에요.
초록· 키워드
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A sensor network system can be an efficient tool for healthcare telemetry for multiple users due to its power efficiency. One drawback is its limited data size. This paper proposed a real-time application of data compression/decompression method in u-Health monitoring system in order to improve the network efficiency. Our high priority was given to maintain a high quality of signal reconstruction since it is important to receive undistorted waveform. Our method consisted of down sampling coding and differential Huffman coding. Down sampling was applied based on the Nyquist-Shannon sampling theorem and signal amplitude was taken into account to increase compression rate in the differential Huffman coding. Our method was successfully tested in a ZigBee and WLAN dual network. Electrocardiogram (ECG) had an average compression ratio of 3.99 : 1 with 0.24% percentage root mean square difference (PRD). Photoplethysmogram (PPG) showed an average CR of 37.99 : 1 with 0.16% PRD. Our method produced an outstanding PRD compared to other previous reports.
목차
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참고문헌 (22)
참고문헌 신청
A. Djohan / 1995 / ECG compression using discrete symmetric wavelet transform / 1995 IEEE 17th Annual Conf. Eng. in Medicine and Biology Society : 167 ~ 168
B. R. Shankara Reddy / 1986 / ECG data compression using fourier descriptors / IEEE Trans. Biomedical Eng. BME-33 (4) : 428 ~ 434
C. M. Fira / 2008 / An ECG signals compression method and its validation using NNS / IEEE Trans. Biomedical Eng. 55 (4) : 1319 ~ 1326
D. A. Dipersio / 1985 / Evaluation of the fan method of adaptive sampling on human electrocardiograms / Medical and Biomedical and Eng. Computing 23 (5) : 401 ~ 410
D. A. Huffman / 1952 / A method for the construction of minimum-redundancy codes / Proc. of the IRE 40 (9) : 1098 ~ 1101
B. R. Shankara Reddy / 1986 / ECG data compression using fourier descriptors / IEEE Trans. Biomedical Eng. BME-33 (4) : 428 ~ 434
C. M. Fira / 2008 / An ECG signals compression method and its validation using NNS / IEEE Trans. Biomedical Eng. 55 (4) : 1319 ~ 1326
D. A. Dipersio / 1985 / Evaluation of the fan method of adaptive sampling on human electrocardiograms / Medical and Biomedical and Eng. Computing 23 (5) : 401 ~ 410
D. A. Huffman / 1952 / A method for the construction of minimum-redundancy codes / Proc. of the IRE 40 (9) : 1098 ~ 1101
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