【海韵讲座】2017年第18期-System Performance Analysis of Cooperative Communication in Wireless Ad Hoc Networks

讲座题目:System Performance Analysis of Cooperative Communication in Wireless Ad Hoc Networks

讲座人:庄卫华教授

讲座时间:2017年5月25日下午3:00

讲座地点:海韵行政楼C505

Abstract:  In wireless ad hoc networks, enabling concurrent cooperative transmissions can achieve both frequency reuse and diversity gains. Due to the broadcast nature of wireless communications, the concurrent cooperative transmissions using the same radio channel generate interference to each other, which is the main performance-limiting factor. Under the protocol interference model, we study the effectiveness of cooperative communication from a perspective of overall network performance through evaluating the network throughput, which captures the trade-off between single-link cooperation gain and network-wide reduced spatial frequency reuse due to relay transmissions. Based on stochastic geometry, the outage probabilities of direct and cooperative transmissions are derived to characterize single-link cooperation gain. On the other hand, according to a randomized scheduling scheme, the expected numbers of concurrent direct and cooperative transmissions that can be accommodated within the network coverage area are calculated to characterize network-wide reduced spatial frequency reuse. The analytical results show that a locally beneficial cooperation decision is not guaranteed to be network-wide beneficial.

Bio:Weihua Zhuang has been with the Department of Electrical and Computer Engineering, University of Waterloo, Canada, since 1993, where she is a Professor and a Tier I Canada Research Chair in Wireless Communication Networks. Her current research focuses on resource allocation and QoS provisioning in wireless networks, and on smart grid. She is a co-recipient of several best paper awards from IEEE conferences. Dr. Zhuang is the Technical Program Chair of IEEE VTC Fall 2017 to be held in Toronto, Canada. She was the Editor-in-Chief of IEEE Transactions on Vehicular Technology (2007-2013), Technical Program Co-Chair of IEEE VTC Fall 2016, and the Technical Program Symposia Chair of the IEEE Globecom 2011. She is a Fellow of the IEEE, a Fellow of the Canadian Academy of Engineering, a Fellow of the Engineering Institute of Canada, and an elected member in the Board of Governors and VP Publications of the IEEE Vehicular Technology Society. 

 

 

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