نام پژوهشگر: محسن محمدولییی

کدینگ سیگنال ecg جهت بهبود فشرده سازی به منظور استفاده در پزشکی از راه دور
پایان نامه وزارت علوم، تحقیقات و فناوری - دانشگاه تربیت مدرس - دانشکده برق و کامپیوتر 1390
  محسن محمدولییی   علی محلوجی فر

one of the most important goals for increasing recognition and treatment revenue is transmitting vital data to medical care team, more quickly. nowadays, use of new technologies for transmitting data will deploy more and more daily. in this article, for transmitting electrocardiogram, first we code the signal into a suite of codes, then we will use bluetooth technology to transmit data from offset device to target device. signal coding will affect in sending and storing data. this suite of codes that form for the first time in this method, include number and type of extermumes, time of occurring them, samples of signal and etc. we complete the coding, using arithmetic coding. the input of arithmetic coding is the extracted suite of coefficients and the output is arithmetic codes. we use sd-200 serial bluetooth modules produced by sena™ for transmission of coding coefficients. the transmitter send extracted coefficients and receptor receive them and reconstruct the primary signal. for testing and evaluating the method, we use mit–bih arrhythmia database. in our method, when average percentage of root mean square differential (prd) is equal to 6.42%, compression ratio (cr) and cross correlation (cc) is equal to 8.59 and 99.57%, respectively. beside, when prd is about 10.61%, cr and cc is 12.83 and 99.27%, respectively.