In this demo, we present a 2.4GHz baseband transceiver with an adaptive detection control scheme based on channel signal-to-noise ratio (SNR) estimation to minimize energy consumption. Power saving becomes an important issue for the rapidly grown usages of portable devices. The proposed receiver consists of two major modules, a packet detector and a demodulator. The packet detector correlates the received preamble and makes decision based on the threshold. To minimize the energy consumption, we designed an adaptive detection scheme such that the false alarm rate and the miss rate are minimized jointly. Furthermore, an FM-to-AM converter is implemented as the low-IF demodulator which has low complexity on hardware implementation. Simulation results show that the optimal detection error rate is achieved compared with the conventional schemes. The receiver with adaptive-threshold detector and the low-IF demodulator is implemented in FPGA platform and is integrated with RF module for passband testing and demonstration. And this platform is completely integrated with a pulse oximeter with SpO2 sensor which demonstrates the wireless personal health monitoring.
Students: 王世賢 (The wireless Tx/Rx Platform), 王俊儼 (The SpO2 sensor)
指導教授: 吳仁銘 , 鄭桂忠
旁白: 王世賢
Contact:
Prof. Jen-Ming Wu (吳仁銘)
Inst. of Communications Engineering
Dept. of Electrical Engineering
National Tsing Hua University
Hsinchu, Taiwan
jmwu@ee.nthu.edu.tw
Acknowledgments : The authors would like to acknowledge the support of this work by MediaTek Corporation through NTHU-MTK Joint Laboratory.
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