题目一：When Multicast and Full-duplex Meet NOMA: Orthogonality versus Non-orthogonality

内容简介：Next generation wireless networks are expected to support very diverse traffics with much tighter requirements, such as massive connectivity, better quality of service, higher throughput, lower latency, or lower control signaling overhead, which should be met with various new techniques such as non-orthogonal multiple access (NOMA) design. Different from conventional orthogonal multiple access (OMA) techniques, NOMA techniques can make more efficient use of transmission resources. On the other hand, mobile broadcast/multicast can significantly improve spectrum efficiency by using point-to-multipoint (PTM) mechanism which distributes the media content to all/partial interested users; the spectral efficiency of full-duplex (FD) bidirectional and cooperative communications can be doubled, provided that the severe self -interference (SI) can be efficiently eliminated. In this talk, basic orthogonal and non-orthogonal MA techniques shall be firstly outlined, then, based on our recent research, the co-existence of NOMA/Multicast, NOMA/FD, and NOMA/Relaying, shall be presented.

报告人：西南交通大学  范平志  教授

报告人简介：工学博士，IEEE Fellow, IET Fellow, 国家973项目首席科学家，国家杰出青年科学基金获得者，国家级有突出贡献的中青年专家，IEEE VT学会杰出演讲者(Distinguished Lecturer)。1997年起受聘英国Leeds大学客座教授。现任科技部“现代交通通信与传感网络”国家级国际联合研究中心主任，西南交通大学移动通信研究所所长。范教授出版中英文著作8部（含编著），发表英文国际刊物论文290余篇，连续多年入选爱思唯尔年度中国高被引学者榜单，荣获IEEE VTS 2018年度Jack Neubauer奖。在指导毕业的博士研究生中，1名获2003年度全国百篇优秀博士论文奖，1名获2017年度中国电子教育学会优秀博士论文奖，多名获省级和校级优秀博士论文奖。主要研究兴趣为：通信-计算-存储协同理论、高移动无线通信、信息理论与编码、信号设计与处理等。

时  间：2018年11月26日（周一）上午10：30始

题目二：Fractional Programming for Coordinated Spectrum Sharing in Wireless Networks

内容简介：Interference management is a key challenge for both cellular and device-to-device (D2D) communication networks, in which multiple transmitter and receiver pairs may arbitrarily interfere with each other with full frequency reuse. In this talk, we introduce a distributed spectrum sharing strategy called FPLinQ to alleviate inter-link interference by coordinating link schedule decisions throughout the network. Scheduling in the general setting is a challenging combinatorial optimization problem. In this talk, we devise a fractional programming (FP) approach to derive a reformulation whereby the integer variables are determined analytically in each iterative step. The resulting FPLinQ algorithm enables an iterative and distributed optimization of link schedule with provable convergence. The proposed strategy can be extended to include joint link scheduling and power control. The proposed strategy can further be used for interference aware uplink scheduling and beamforming in cellular networks. As compared to the existing works such as FlashLinQ, ITLinQ and ITLinQ+, a main advantage of the proposed strategy is that it does not require tuning of design parameters; it further shows significant performance advantage as compared to the benchmarks in maximizing the sum rate and the network utility.

报告人：加拿大工程院院士、多伦多大学  Wei Yu（郁炜）  教授

报告人简介：Wei Yu (S'97-M'02-SM'08-F’14) received the B.A.Sc. degree in Computer Engineering and Mathematics from the University of Waterloo, Waterloo, Ontario, Canada in 1997 and M.S. and Ph.D. degrees in Electrical Engineering from Stanford University, Stanford, CA, in 1998 and 2002, respectively. Since 2002, he has been with the Electrical and Computer Engineering Department at the University of Toronto, Toronto, Ontario, Canada, where he is now Professor and holds a Canada Research Chair (Tier 1) in Information Theory and Wireless Communications. His main research interests include information theory, optimization, wireless communications and broadband access networks.

Prof. Wei Yu currently serves on the IEEE Information Theory Society Board of Governors (2015-20). He was an IEEE Communications Society Distinguished Lecturer (2015-16). He serves as an Area Editor for the IEEE Transactions on Wireless Communications (2017-20). He served as an Associate Editor for IEEE Transactions on Information Theory (2010-2013), as an Editor for IEEE Transactions on Communications (2009-2011), as an Editor (2004-2007) for IEEE Transactions on Wireless Communications, and as a Guest Editor for a number of special issues for the IEEE Journal on Selected Areas in Communications and the EURASIP Journal on Applied Signal Processing. He was a Technical Program co-chair of the IEEE Communication Theory Workshop in 2014, and a Technical Program Committee co-chair of the Communication Theory Symposium at the IEEE International Conference on Communications (ICC) in 2012. He is currently the Chair of the Signal Processing for Communications and Networking Technical Committee of the IEEE Signal Processing Society (2017-18) and served as a member in 2008-2013. Prof. Wei Yu received the IEEE Signal Processing Society Best Paper Award in 2017 and 2008, the Journal of Communications and Networks Best Paper Award in 2017, an E.W.R. Steacie Memorial Fellowship in 2015, an IEEE Communications Society Best Tutorial Paper Award in 2015, an IEEE ICC Best Paper Award in 2013, the McCharles Prize for Early Career Research Distinction in 2008, the Early Career Teaching Award from the Faculty of Applied Science and Engineering, University of Toronto in 2007, and an Early Researcher Award from Ontario in 2006. He is recognized as a Highly Cited Researcher.

Prof. Wei Yu is a Fellow of IEEE and a Fellow of Canadian Academy of Engineering. He is a member of the Royal Society of Canada's College of New Scholars, Artists and Scientists. He is a registered Professional Engineer in Ontario.

时  间：2018年11月26日（周一）下午3：00始

题目三：Placement Delivery Array and Its Applications

内容简介：Recently, placement delivery array (PDA) was formulated to describe the placement and delivery phases with a single array for centralized coded caching scheme in an error- free shared link. In this talk, we explore PDA characterizations for two other models: device-to-device (D2D) network and distributed computing system. The inherent connections between these systems and the shared link caching system are displayed through PDA, which allows us to transform the PDA based schemes originally designated for shared link to those networks. As a result, combining with existing constructions, we can obtain schemes requiring low subpacketization level for D2D network or smaller number of files for distributed computing system.

报告人：西南交通大学  唐小虎  教授

报告人简介：博士生导师。曾任香港科技大学副研究员，德国Ulm大学客座教授。2003年获得全国百篇博士学位论文奖，2007年获德国洪堡基金，2013获国家杰出青年基金，2013年获得全国百篇博士学位论文指导教师奖，2014年入选教育部长江学者特聘教授，2018年入选万人计划中青年科技创新领军人才。近年来主持自然科学基金、教育部重大项目等多项国家级省部级科研项目，在国际重要学术期刊发表论文SCI检索论文100余篇，其中包括信息领域国际旗舰期刊IEEE Transactions on Information Theory论文50篇。

时  间：2018年11月26日（周一）下午4：00始

地  点：南海楼224室

热烈欢迎广大师生参加!

网络空间安全学院

2018年11月21日