Adaptive Delta Modulation for Telephone Biotelemetry of ECG (Electrocardiograph)

摘要

The report describes an investigation pertaining to signal processing techniques and their applications in biomedical communications. Here, the emphasis is on the application of digital coding techniques in telephone biotelemetry of electrocardiograph (ECG) signals. The existing techniques for telephone biotelemetry are briefly reviewed, their shortcomings are identified, and some possible solutions to the problems are investigated. One particular approach discussed here is the application of adaptive delta modulation (ADM) for digital encoding of ECG. The design and implementation of such an ADM system in the laboratory indicates that three ADM-encoded ECGs can be time-division multiplexed and transmitted through one telephone channel.