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Towards a Scalable C-RAN PHY
Date:2015/7/15     Browse:592

Speaker: Angela Yingjun Zhang

Time: July 15th , 2:00-3:00 pm

Location: Room 220, Building 8, Yueyang Road Campus

Abstract:

Featured by centralized processing and cloud based infrastructure, Cloud Radio Access Network (C-RAN) is a promising solution to achieve unprecedented system capacity in future wireless cellular networks. The huge capacity gain comes from the centralized and coordinated signal processing at the cloud server. However, full-scale coordination in a large-scale C-RAN requires the processing of very large channel matrices, leading to high computational complexity and channel estimation overhead. In this talk, we exploit the near-sparsity of large C-RAN channel matrices, and derive a unified theoretical framework for clustering and parallel processing. Based on the framework, we propose a dynamic nested clustering (DNC) algorithm that not only greatly improves the system scalability in terms of baseband-processing and channel-estimation complexity, but also is amenable to various parallel processing strategies for different data center architectures. 

Bio:

Angela Yingjun Zhang received her PhD degree in Electrical and Electronic Engineering from the Hong Kong University of Science and Technology, Hong Kong in 2004. Since 2005, she has been with Department of Information Engineering, The Chinese University of Hong Kong, where she is currently an Associate Professor. Her current research interests are mainly focused on wireless communications systems and smart power systems, in particular optimization techniques for such systems.


Dr. Zhang is an Executive Editor of IEEE Transactions on Wireless Communications. She is also an Associate Editor of IEEE Transactions on Communications. Previously, she served many years as an Associate Editor of IEEE Transactions on Wireless Communications and Wiley Security and Communications Networks Journal, and a Guest Editor of a Feature Topic in IEEE Communications Magazine. She has served as a Workshop Chair of IEEE ICCC 2014 and 2013, TPC Vice Chair of Wireless Networks and Security Track of IEEE VTC 2014, TPC Vice-Chair of Wireless Communications Track of IEEE CCNC 2013, TPC Co-Chair of Wireless Communications Symposium of IEEE GLOBECOM 2012, Publication Chair of IEEE TTM 2011, TPC Co-Chair of Communication Theory Symposium of IEEE ICC 2009, Track Chair of ICCCN 2007, and Publicity Chair of IEEE MASS 2007. She was a Co-Chair of IEEE ComSoc Multimedia Communications Technical Committee and the IEEE Communication Society GOLD Coordinator.


Dr. Zhang is a co-recipient of 2014 IEEE ComSoc APB Outstanding Paper Award, 2013 IEEE SmartgridComm Best Paper Award, and 2011 IEEE Marconi Prize Paper Award on Wireless Communications. She received the Young Researcher Award from The Chinese University of Hong Kong in 2011. As the only winner from Engineering Science, she has won the Hong Kong Young Scientist Award 2006, conferred by the Hong Kong Institution of Science.                                                                                                                      

SIST-Seminar 15032