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加拿大 魁北克大学

École de technologie supérieure

University of Quebec

Montreal, Canada

Zbigniew Dziong 教授 学术报告会

1.      报告题目：

Multiuser Detection Based MAC Design for Ad Hoc Networks

2.      报告人：Professor Zbigniew Dziong

                (http://142.137.242.224/zmdziong/English/index.html)

3.      时间：2008年12月29日 (星期一) 下午3:00 – 5:00

4.      地点：浙江大学、信息科学与电子工程系、信电楼221室

Abstract:

In the first part of the presentation we will present a framework and some results of the three year research project titled “Cross Layer Interface for Cognitive Radios in an Ad Hoc Wireless Network” that was funded by both industry and government. In particular we will discuss some results achieved within sub-project titled “Multiuser Detection Based MAC Design for Ad Hoc Networks”. This sub-project assumes that recent technological advances in code division multiple access (CDMA) with multiuser detection (MUD) allow to consider this technology for future wireless Ad Hoc networks. Due to the fundamentally different physical layer architecture, application of MUD in Ad Hoc networks requires novel approaches for MAC and scheduling mechanisms in order to take advantage of the new features. We propose new MAC and scheduling schemes which address three design issues: distributed dynamic code assignment that avoids code collision, distributed scheduling scheme that provides fairness among contending nodes, and organization of the data transmission based on multiuser detection. Extensive simulation results are given to verify the effectiveness of the proposed solutions. To demonstrate the performance improvements, comparisons with existing MAC paradigms, such as CSMA/CA and parallel CDMA, are presented. In the second part of the presentation we will present the scope and a summary of some initial results of current three year project titled “Cognitive Wireless Mesh Networks for Multimedia Applications”.

Biography:

Zbigniew Dziong received his M.Sc. and Ph.D. degrees from the Warsaw University of Technology, Poland, both in Electrical Engineering. After graduation he was with the Warsaw University of Technology as an Assistant Professor. During this period, he was on sabbatical leaves at the Centre National d'Etudes des Telecommunications, Paris, France, and at the Department of Communication Systems, Lund Institute of Technology, Sweden. From 1987 to 1997 he was with INRS-Telecommunications, Montreal, Canada, as a Professor. From 1997 to 2003 he worked for Performance Analysis Department at Bell Labs, Lucent Technologies, Holmdel, New Jersey, USA. Since 2003 he is with École de technologie supérieure (University of Quebec), Montreal, Canada, where he teaches on both undergraduate and graduate level as a Professor.