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논문 기본 정보
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- 대한의용생체공학회 Biomedical Engineering Letters (BMEL) Biomedical Engineering Letters (BMEL) Vol.7 No.2
- 발행연도
- 2017.1
- 수록면
- 153 - 171 (19page)
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Telemedicine is becoming increasingly, withapplications in many areas of healthcare, such as hometelecare of the elderly, diagnosis at a distance and roboticsurgery. The simultaneous transmission of several leads ofbiomedical signals should be considered in telemedicine,given the many benefits it brings. Code division multipleaccess (CDMA) is a multiple access technique that enablesusers to transmit independent information simultaneouslywithin the same bandwidth. The direct sequence CDMA(DS-CDMA) is a variant of the CDMA technique in whicha pseudorandom sequence having a higher bandwidth thanthe information signal is used to modulate the informationsignal directly. Biomedical signals are confidential; thus,their transmission must be secured. In this paper we proposea protocol similar to DS-CDMA for the simultaneoustransmission of all of the leads of some multichannelbiomedical signals. We assigned orthogonal codes to differentleads of a signal. The convolution of each lead withthe code gives a signal spread over a broad frequency band. All of the spread signals are then mixed to produce a singlecomposite signal. This composite signal is frequencymodulated, amplified and transmitted. At the reception,inverse functions to the previous are developed to performdemodulation, demultiplexing and extraction of the physiologicalsignals transmitted. We used the discrete Walshfunctions as codes. The results obtained are satisfactory,even in situations where the noise disturbances aresignificant.
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참고문헌 (31)
참고문헌 신청
Changhong Wang / 2015 / Low-power Technologies for Wearable Telecare and Telehealth Systems: A Review / Biomedical Engineering Letters (BMEL) 5(1):1~9
Tchiotsop D / 2015 / Low cost and low power ECG recorder suitable for low incomes populations / Int J Electron Commun Comput Eng 6(4):558~564
Nasrabadi AM / 2011 / Design of ECG acquisition and transmission via Bluetooth with heart disease and diagnosis / Proceedings of IEEE international workshop on medical measurements and application :55~58
Silapaporn P / 2012 / Continous ECG Transmission via mobile Telephone Network and waiting time of packets for smooth display / Proceedings of IEEE computational intelligence, communication systems and network :137~142
Wang IJ / 2010 / A wearable mobile electrocardiogram measurement device with novel dry polymer based electrodes / Proceedings of IEEE region 10 conference :379~384
Tchiotsop D / 2015 / Low cost and low power ECG recorder suitable for low incomes populations / Int J Electron Commun Comput Eng 6(4):558~564
Nasrabadi AM / 2011 / Design of ECG acquisition and transmission via Bluetooth with heart disease and diagnosis / Proceedings of IEEE international workshop on medical measurements and application :55~58
Silapaporn P / 2012 / Continous ECG Transmission via mobile Telephone Network and waiting time of packets for smooth display / Proceedings of IEEE computational intelligence, communication systems and network :137~142
Wang IJ / 2010 / A wearable mobile electrocardiogram measurement device with novel dry polymer based electrodes / Proceedings of IEEE region 10 conference :379~384
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