Title :
A low cost quadratic level ECG compression algorithm and its hardware optimization for body sensor network system
Author :
Kim, Hyejung ; Yongsang Kim ; Yoo, Hoi-Jun
Author_Institution :
Korea Advanced Institute of Science and technology (KAIST), 373-1, Guseongdong, Yuseong-gu, Daejeon, 305-701, Republic of Korea
Abstract :
A low cost quadratic level compression algorithm is proposed for body sensor network system. The proposed algorithm reduces the encoding delay and the hardware cost, while maintaining the reconstructed signal quality. The quadratic compression level determined by the mean deviation value is used to preserve the critical information with high compression ratio. The overall CR is 8.4:1, the PRD is 0.897% and the encoding rate is 6.4Mbps. The 16-bit sensor node processor is designed, which supports the proposed compression algorithm. The processor consumes 0.56nJ/bit at 1V supply voltage with 1MHz operating frequency in 0.25-μm CMOS process.
Keywords :
Algorithm design and analysis; Body sensor networks; Chromium; Compression algorithms; Cost function; Delay; Electrocardiography; Encoding; Hardware; Process design; Algorithms; Computer Communication Networks; Computer-Aided Design; Data Compression; Diagnosis, Computer-Assisted; Electrocardiography, Ambulatory; Equipment Design; Equipment Failure Analysis; Humans; Reproducibility of Results; Sensitivity and Specificity; Signal Processing, Computer-Assisted;
Conference_Titel :
Engineering in Medicine and Biology Society, 2008. EMBS 2008. 30th Annual International Conference of the IEEE
Conference_Location :
Vancouver, BC
Print_ISBN :
978-1-4244-1814-5
Electronic_ISBN :
1557-170X
DOI :
10.1109/IEMBS.2008.4650457
