NDLI: An approximate compressor for wearable biomedical healthcare monitoring systems

Content Provider	IEEE Xplore Digital Library
Author	Samie, F. Bauer, L. Henkel, J.
Copyright Year	2015
Description	Author affiliation: Dept. of Embedded Syst., Karlsruhe Inst. of Technol., Karlsruhe, Germany (Samie, F.; Bauer, L.; Henkel, J.)
Abstract	Technology advancements as well as the Internet-of-Things paradigm enable the design of wearable personal healthcare monitoring systems. Ultra-low-power design is a challenging area for these battery-operated wearable devices, where the energy supply is limited and hardware resources are scarce. Some biomedical applications tolerate small errors in the values of the biosignal or small degradation in the quality, which can be exploited to reduce the energy requirements. This paper presents an approximate compression technique for biosignals in a wearable healthcare monitoring system. It takes advantage of error tolerance in biosignals and finds the shortest code to compress the data while keeping the error in an acceptable range. Our approximate compressor does not demand any hardware modification and thus can be used in existing wearable devices. The proposed approach for reducing the size of the Huffman table can save 1 MBit storage, on average. It also makes our approximate compressor suitable for runtime adaptation, i.e. creating a new Huffman table based on updated values. Compared to state-of-the-art, our experimental results show up to 60% reduction in data size that is to be transmitted via radio. As wireless communication contributes significantly to the total energy consumption of wearable devices, this improvement can increase the battery lifetime of our healthcare monitoring prototype from 7 days to 10 days.
Starting Page	133
Ending Page	142
File Size	466054
Page Count	10
File Format	PDF
ISBN	9781467383219
DOI	10.1109/CODESISSS.2015.7331376
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2015-10-04
Publisher Place	Netherlands
Access Restriction	Subscribed
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Electrocardiography Approximation methods Biomedical monitoring Medical services Monitoring Encoding Histograms IoT Biomedical Healthcare Wearable Devices Approximate Computing Compression Internet of Things
Content Type	Text
Resource Type	Article

Sl.	Authority	Responsibilities	Communication Details
1	Ministry of Education (GoI), Department of Higher Education	Sanctioning Authority	https://www.education.gov.in/ict-initiatives
2	Indian Institute of Technology Kharagpur	Host Institute of the Project: The host institute of the project is responsible for providing infrastructure support and hosting the project	https://www.iitkgp.ac.in
3	National Digital Library of India Office, Indian Institute of Technology Kharagpur	The administrative and infrastructural headquarters of the project	Dr. B. Sutradhar bsutra@ndl.gov.in
4	Project PI / Joint PI	Principal Investigator and Joint Principal Investigators of the project	Dr. B. Sutradhar bsutra@ndl.gov.in Prof. Saswat Chakrabarti will be added soon
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