报告题目：计算机智能系统系列报告

报告时间：2017年5月11日，15：20

报告地点：郁文楼A102会议室

报告人：李强

报告人简介：

李强，博士，讲师，目前主要研究方向为无线传感器网络。2014年7月获得清华大学工学博士学位（导师：管晓宏教授），同年11月在浙江工业大学计算机科学与技术学院任教。参与浙江省科技厅公益技术项目1项；以第一作者或通信作者身份在《Peer-to-Peer Networking and Applications》、《IEEE International Conference on Communications》等国内外学术刊物与会议中发表多篇论文。

报告内容：An Enhanced MAC Protocol for Terahertz Communications through Relay Nodes with Multiple Antennas

Directional terahertz (THz) communication has been envisioned as one of the key technologies to support the high data rate for indoor wireless networks. However, on the one hand, THz communication distance is extremely limited by the severe path loss as a result of the high frequencies and the constrained transmission power at the transceivers. On the other hand, static obstacles or moving objects around the communicating THz nodes will significantly interrupt or block the Line-of-Sight (LoS) propagations, which necessitates new communication protocols. In this paper, an enhanced MAC protocol is presented for indoor THz networks to overcome the effect of obstacles and to improve the communication distance. The MAC protocol is designed to guarantee the communications by redirecting the antennas of transceivers to solve the facing problem, and utilizing the appropriate relay node to transfer the data across the obstacles. After that, a corresponding mathematical framework is developed to analyze the performance of the proposed MAC protocol in terms of packet delay, throughput and its theoretical upper bound. Numerical results are provided to evaluate the performance of the proposed protocol under different scenarios and are compared with the existing THz MAC protocols.