Distributed Compression of ECG Signal

• Main Authors: Chen, Po-Chiang, 陳柏強
• Other Authors: Chang, Wen-Whei
• Format: Others
• Language: zh-TW
• Published: 2011
• Online Access: http://ndltd.ncl.edu.tw/handle/50879412577389787733

碩士 === 國立交通大學 === 電信工程研究所 === 99 === In recent years, mobile telemedicine has become one of the emerging research topics. Electrocardiogram (ECG) is a pictorial representation of the electrical activity of heart beats and is useful diagnose cardiac disease. The purpose of this work is to develop distributed source coding (DSC) techniques for ECG signal compression under an ideal transmission environment. We focus on the DSC of two correlated ECG sources, with their correlation modeled by a virtual binary symmetric channel (BSC). Based on the concept of code binning, the DSC encoder compresses one source sequence into a syndrome sequence. The DSC decoder uses the other source sequence as side information together with the received syndrome sequence to identify the original source sequence. Also proposed is a modified BCJR algorithm which integrates the symbol level a priori information into the soft-output decoding algorithm.