A Multi-to-One TDMA Baseband Design for Physiological signal Transmission Application

• Main Authors: Cheng, Tzu-Yang, 鄭子揚
• Other Authors: Wu, Chang Hsi
• Format: Others
• Language: zh-TW
• Published: 2014
• Online Access: http://ndltd.ncl.edu.tw/handle/47528938422887392518

碩士 === 龍華科技大學 === 電子工程系碩士班 === 102 === This article describes a low complexity digital time division multiple access (TDMA) baseband design for multi-biosensor nodes to a central processing node communication. The proposed communication protocol is achieved by introducing the control codes of tag/data type and the bit error rate (BER) is reduced by using the central read technology and multiple reading technology. A digital timing synchronization circuit is also proposed to achieve clock synchronization between biosensor nodes. The proposed TDMA baseband is fabricated successfully in a 0.18-μm CMOS process and designed with verilog HDL. With transmission data rate of 4Mbps based on 64MHz system clock and a 1.8 supply, the proposed baseband chips consume total 1.16mW which contains 680uW for biosensor node and 480uW for central processing node. The chip area is 1.150x1.150mm2 for biosensor node and 1210 x 1181mm2 for central processing node.