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KMID : 0372919860070010053
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Journal of Biomedical Engineering Research
1986 Volume.7 No. 1 p.53 ~ p.57
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Design of a Digital Modem for ECG Data Transmission
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Abstract
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This paper represent the design of a digital modem which transmits the ECG data from an ambulatory arrhythmia monitor over the telephone lines to a large hospital for the instantaneous interpretations.
The digital modem provides on-line communications between the patient and the central computer located near cardiologists. For commercial telephone lines, the transmitting error rates of the digital modem were measured 200 times at a speed of 300 baud.
In´ those measurements, the block errors-results, due to the misinterpretation of start and stop bits, did not occur. The data bit errors which were due to a single bit interpreted incorrectly were 0. 78 (bits/106). . Since the ´acceptable data bit error limit is 10 per 106 bits transmitted, the digital modem designed in this paper can be used for the clinical applications without any difficulty.
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