摘要：
Recent advances in Cross-Technology Communication (CTC) have improved efficient cooperation among heterogeneous wireless devices. However, until now even the most effective CTC requires these devices to operate in the same ISM band (e.g., 2:4GHz), because conventional wisdom holds that wireless transceivers with different (fundamental) frequencies cannot communicate with each other. Our work, named TiFi, challenges this belief by allowing a 2.4G WiFi receiver (e.g., smart phone) to identify UHF tags, which operates at the spectrum between 840 920MHz. TiFi does not require changing today’s smart phones or tags. Instead, TiFi leverages the underlying harmonic backscattering of tags to open a second channel and uses it to talk with WiFi receivers. 
报告人简介：
Dr. YANG Lei is currently an Assistant Professor in Department of Computing from the Hong Kong Polytechnic University. Previously, he was a postdoc fellow in the School of Software, Tsinghua University. He received his B.S. and Ph.D. degrees from Xi’an Jiaotong University. He has published 50 papers at top conferences and journals, such as MobiCom, MobiHoc, SenSys, INFOCOM, TPDS, TMC, TON, and so on. He is the recipient of the “Best Paper Award” in MobiCom’14, the “Best Paper Award” in MobiHoc’14, the “Best Demo Award (Runner-up)” in MobiCom’18, and the “ACM China Doctoral Dissertation Award” in 2014. 
时间：6月19日  10:00-11:30
地点：计算机科学技术楼229室