A Battery-Powered Digital Modem for Telephone Transmission of ECG Data

Nitish V. Thakor, J. G. Webster, W. J. Tompkins

Research output: Contribution to journalArticle


We present the design of a battery-powered digital modem for transmitting ECG signals. It operates from a 5-V battery supply, uses a coil or acoustic coupler for a telephone interface, and consumes only 30 mW during transmission. We show error rates comparable to regular stand-alone modems, well within the acceptable limit of 1 bit per 100 kbits transmitted at a transmission speed of 300 Bd.

Original languageEnglish (US)
Pages (from-to)355-359
Number of pages5
JournalIEEE Transactions on Biomedical Engineering
Issue number5
StatePublished - May 1982


ASJC Scopus subject areas

  • Biomedical Engineering

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