Invited Speakers

About Professor Hsiao-Hwa Chen

Dr. Hsiao-Hwa Chen's(hshwchen@ieee.org) is currently holding a Distinguished Professor position in the Department of Engineering Science, National Cheng Kung University, Taiwan. He received BSc and MSc degrees with the highest honor from Zhejiang University, China, and a PhD degree from the University of Oulu, Finland, in 1982, 1985 and 1990, respectively, all in Electrical Engineering.
He worked with Academy of Finland as a Research Associate from 1991 to 1993, and the National University of Singapore as a Lecturer and then a Senior Lecturer from 1992 to 1997. He joined Department of Electrical Engineering, National Chung Hsing University, Taiwan, as an Associate Professor in 1997 and was promoted to a full-Professor in 2000. In 2001 he joined National Sun Yat-Sen University, Taiwan, as the founding Chair of the Institute of Communications Engineering of the University. Under his strong leadership the institute was ranked in the second position of the country in terms of SCI journal publications and National Science Council funding per faculty member in 2004. In particular, National Sun Yat-Sen University was ranked in the first place in the world in terms of the number of SCI journal publications in wireless LANs technical papers during 2004 to mid-2005, according to a Research Report released by The Office of Navel Research, USA.
He was a visiting Professor to Department of Electrical Engineering, University of Kaiserslautern, Germany, in 1999, the Institute of Applied Physics, Tsukuba University, Japan, in 2000, Institute of Experimental Mathematics, University of Essen, Germany in 2002 (under DFG Fellowship), the Chinese University of Hong Kong in 2004, and the City University of Hong Kong in 2007.
His current research interests include wireless networking, MIMO systems, information security, and Beyond 3G wireless communications. He is the inventor of the next generation CDMA technologies. He is a recipient of numerous Research and Teaching Awards from National Science Council, Ministry of Education, and other professional groups in Taiwan.
He has authored or co-authored over 400 technical papers in major international journals and conferences, six books and more than ten book chapters in the areas of communications, including the book entitled "Next Generation Wireless Systems and Networks" (512 pages) and "The Next Generation CDMA Technologies" (468 pages), both by John Wiley in 2005 and 2007, respectively. He has been an active volunteer for IEEE various technical activities for over 22 years. Currently, he is serving as the Chair of IEEE Communications Society Communications & Information Security Technical Committee, and he served as the Chair for IEEE Communications Society Radio Communications Committee from 2007 to 2008. He served or is serving as symposium chair/co-chair of many major IEEE conferences, including IEEE VTC 2003 Fall, IEEE ICC 2004, IEEE Globecom 2004, IEEE ICC 2005, IEEE Globecom 2005, IEEE ICC 2006, IEEE Globecom 2006, IEEE ICC 2007, IEEE WCNC 2007, etc. He served or is serving as Editorial Board Member or/and Guest Editor of IEEE Communications Letters, IEEE Communications Magazine, IEEE Wireless Communications Magazine, IEEE JSAC, IEEE Network Magazine, IEEE Transactions on Wireless Communications, and IEEE Vehicular Technology Magazine. He is the Editor-in-Chief of Wiley's "Security and Communication Networks" Journal (www.interscience.wiley.com/journal/security), and the Special Issue Editor-in-Chief of Hindawi Journal of Computer Systems, Networks, and Communications (http://www.hindawi.com/journals/jcsnc/). He is also serving as the Chief Editor (Asia and Pacific) for Wiley's Wireless Communications and Mobile Computing (WCMC) Journal and Wiley's International Journal of Communication Systems, etc. His original work in CDMA wireless networks, digital communications and radar systems has resulted in five US patents, two Finnish patents, three Taiwanese patents and two Chinese patents, some of which have been licensed to industry for commercial applications. He is an adjunct Professor of Zhejiang University, China, and Shanghai Jiao Tong University, China. Professor Chen is the recipient of the Best Paper Award in IEEE WCNC 2008, and the recipient of IEEE Radio Communications Technical Committee Outstand Service Award in 2009. Professor Chen is a Fellow of IEEE, a Fellow of IET, and a Fellow of BCS.

Space-time-frequency coding for next generation MIMO applications

Space-time coding plays a critical role in separation of signal transmissions via different transmitter and receiver pairs, and thus it lays a foundation for implementation of all currently available MIMO technologies, which are capable to offer powerful spatial diversity gain and/or multiplex capability without consuming precious bandwidth resources. Without doubt, all futuristic wireless communication systems will not be possible without the applications of MIMO technologies. Unfortunately, all currently available space-time coding schemes were proposed based mainly on bit-level or symbol-level block coding or trellis coding schemes, and their performances are extremely sensitive to multi-user interference and multipath propagation. This talk presents a novel chip-level space-time coding scheme, which works based on powerful three-dimensional space-time-frequency coding. Different from all traditional bit-level/symbol-level space-time coding schemes, the chip-level space-time-frequency coding offers a very robust performance due to its superior interference-resistant properties, and it is in particular suitable for implementing MIMO applications in futuristic wireless communications in complex multi-user and multipath environment.

In addition, the chip-level space-time-frequency coding provides us a unique paradigm, on which the design of the space-time coding can be optimized jointly with the design of user signature codes in the next generation code division multiple access system as an effort to maximize the system performance as a whole.

About Dr. Hong Shen

Hong Shen is Professor (Chair) of Computer Science and Leader of Networks, Parallel and Distributed Systems research direction in The University of Adelaide, Australia. He is also a specially-appointed professor in Beijing Jiaotong University where he directs the Institute of High Performance Servicing Computing. He is the recipients of "National Thousand Talents" in 2010 and "Chinese Academy of Sciences Hundred Talents" in 2005. Previously, he was Professor and Chair of Computer Networks Laboratory in Japan Advanced Institute of Science and Technology (JAIST) during 2001-2006, and Professor of Computer Science in Griffith University, Australia, where he taught 9 years. He has held numerous awards, visiting and special appointments in several institutions. Received his Bachelor of Engineering from Beijing University of Science and Technology, Master of Engineering from University of Science and Technology of China, Ph.Lic. and Ph.D. from Abo Akademi University in Finland, Prof. Shen has research interests in parallel and distributed computing, algorithms, high performance networks, privacy and security, data mining and multimedia systems. He has published 280+ papers, with 100+ papers in international journals including a variety of IEEE and ACM transactions, served on editorial boards of 10 international journals, and chaired several international conferences.

Fault-Tolerant Resource Allocation: Models, Challenges and Solutions

Resource allocation is a key problem of great theoretical significance and application value in almost every area of our modern society. This problem has increasing importance in the current information-sharing era, particularly with the emergence of various types of contemporary resource provision systems such as Web information systems, content delivery networks and clouds. The problem mathematically is based on the classical facility location problem to compute a minimum-cost connection scheme for a given set of client-site connection requirements which is NP-hard even for the simplest case of single facility per site and single connection per client.

In this talk, I will introduce our recent work in developing efficient approximation solutions to the fault-tolerant resource allocation problem in the general setting that a site may contain multiple resources and a client may require more than one connection which arises in various IT applications. I will begin with an overview of the problem, its models and challenges. Then I will present an 1.52-approximation solution to this problem for the case that each site has an unlimited supply of resources and access to each resource is unlimited. Based on this I will show how to obtain approximation solutions to the problem when access to each resource is limited and resource supply in each site is limited respectively, followed by approaches of further extension to other models. Running in polynomial time to the number of connections established, our algorithms use a greedy approach in seeking solutions and apply several LP techniques in approximation ratio analysis and improvement. Finally, I will illustrate some applications of fault-tolerant resource allocation, including service discovery in federated clouds, fuzzy clustering and complex network design.