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2009 Seminars
Protecting HDTV packets by applying erasure coding on the transport layer of a DSL connection
Cognitive Radio Networks Presentation of Upcoming Papers in WCNC 2009 by NTU speakers Effects of Non‐Identical Fading on Space‐Time Diversity Techniques over
Distributed MIMO Channels Vehicular Urban Sensing: Dissemination and Retrieval From the present Internet to a Future Internet Presentation of Upcoming Papers in ICC 2009, ISIT 2009 and SECON 2009 by NTU Speakers COORDINATION SCHEMES IN INTERFERENCE-LIMITED MIMO NETWORKS Cognitive and cooperative communication models for spectrum sharing in wireless systems Novel MIMO detectors by combining sorting and lattice reduction Non-Coherent Ultrawide Bandwidth Communications – Analysis and
Interference Recent Advances in Cooperative Communications & Networks Optimal Dynamic Spectrum Access Techniques For Cognitive Radio Networks . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
The presentation shows the impact of Forward Error Correction (FEC)and retransmissions on the video quality of packetized HDTV video flowswithpossible buffer overflow at the ingress node of the video network. As Iwill show, the use of protection is a mixed blessing. On the onehand, it increases the packet rate associated with each video flow (due to overhead), which results in a higher buffer overflow probability. On theother hand, protection allows for the recovery of lost packets, whichalleviates the problem of buffer overflow. It turns out that theoverall impact of FEC and retransmission is very beneficial for the video quality. Moreover, retransmissions clearly outperform FEC, and can ensure HDTV video quality up to loads at the ingress node close toone. Speaker's Biography
For more details, please visit http://telin.rug.ac.be/~fv/ [ back to top ] . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Abstract Furthermore, the correlation between packet erasures on a DSL line requires these codes to be robust to bursts of packet erasures. We show how some specially designed binary code performs about as well as the more complex Reed-Solomon codes with the same overhead and the same latency. We show that the goal of 1 Visible Distortion in Twelve hours on a DSL line with correlated packet erasures can be achieved by means of simple binary codes that require only 2 or 3 parity packets, depending on the expected amount of correlation.
For more details, please visit http://telin.rug.ac.be/~fv/ [ back to top ] . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Abstract In this tutorial, we will provide a state-of-art overview on cognitive radio networks and dynamic spectrum access, covering the theoretical aspects, enabling techniques, practical applications and technical challenges. In particular, the following topics will be covered in details.
Dr Liang is now an Associate Editor of IEEE Transactions on Vehicular Technology. He was an Associate Editor of IEEE Transactions on Wireless Communications from 2002 to 2005, Lead Guest-Editor of IEEE Journal on Selected Areas in Communications, Special Issue on Cognitive Radio: Theory and Applications, and Guest-Editor of COMPUTER NETWORKS Journal (Elsevier) Special Issue on Cognitive Wireless Networks. He received the Best Paper Awards from IEEE VTC-Fall’1999 and IEEE PIMRC’2005, and 2007 Institute of Engineers Singapore (IES) Prestigious Engineering Achievement Award. Dr Liang has served for various IEEE conferences as technical program committee (TPC) member. He was TPC Co-Chair of 2006 IEEE International Conference on Communication Systems (ICCS’2006), and 3rd International Conference on Cognitive Radio Oriented Wireless Networks and Communications (CrownCom’2008), Deputy Chair of 2008 IEEE Symposium on New Frontiers in Dynamic Spectrum Access Networks (DySPAN’2008), and Co-Chair, Thematic Program on Random matrix theory and its applications in statistics and wireless communications, Institute for Mathematical Sciences, National University of Singapore, 2006. Dr Liang is a Senior Member of IEEE. Date : 26 Feb 2009 (Thursday) Please email to Chai Ooy Mei for registration. losing date would be 23rd Feb. [ back to top ] . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Paper1 Paper2 Paper3 Paper4 Paper5 Date : 26 March 2009 (Thursday) Please email to Chai Ooy Mei for registration. Closing date would be 23rd March 2009. [ back to top ] . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Abstract Speaker's Biography
From Aug. 2003 to Aug. 2004, she was a Member of Professional Staff in the Wireless Access Group at Hong Kong Applied Science & Technology Research Institute Co. Ltd. From Aug 2004 to Dec. 2007, she was with the Department of Electrical and Computer Engineering at National University of Singapore as an Assistant Professor. Since Jan. 2008, she joined the Department of Electronic Engineering at Shanghai Jiao Tong University, China, where she is currently an Associate Professor. Her research interests are in the areas of wireless communication systems and communication theory, including MIMO techniques, cooperative communications, dynamic resource allocation, and physical layer network coding. She has published over 30 IEEE journal/conference papers on these topics and also holds 3 US patents. Dr. Tao is an Editor of IEEE Transactions on Wireless Communications. She is currently serving as the Track Co‐Chair for APCC2009 and the Symposium Co‐Chair for ChinaCom2009. She also served as Track Co‐Chair for IEEE ICCCN'07 and IEEE ICCCAS'07. She has been serving as Technical Program Committee member for various conferences, including IEEE ICC (2006, 2007, 2008, 2009), IEEE WCNC (2007, 2008, 2009), IEEE GLOBECOM (2007, 2009), and IEEE VTC (2006‐ Fall, 2008‐Spring, 2009‐Spring). She is a member of IEEE and IEEE ComSoc since year 2000. Dr. Tao is the recipient of the Publication Awards in the Institution of Engineers, Singapore, in 2005. In 2008, she was selected as Chen Guang Scholar of Shanghai, China. For more details, please visit http://iwct.sjtu.edu.cn/Personal/mxtao/ Date : 8th April 2009 Refreshment provided [ back to top ] . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Abstract There has been growing interest in vehicle to vehicle communications for a broad range of applications ranging from safe driving to content distribution, advertising, commerce and games. One emerging application is urban sensing. Vehicles monitor the environment, classify the events, e.g., license plates, pollution readings, etc. and exchange metadata with neighbors in a peer-to-peer fashion, creating a distributed index from which mobile users can extract different views. For instance, the Department of Transportation captures traffic statistics; the Department of Health monitors pollutants, and; Law Enforcement Agents investigate crimes. Mobile, vehicular sensing differs significantly from conventional wireless sensing. Vehicles have no strict limits on battery life, processing power and storage capabilities. Moreover they can generate enormous volumes of data, making conventional sensor data collection inadequate. In this talk we first review popular V2V applications and then introduce MobEyes, a middleware solution that diffuses data summaries to create a distributed index of the sensed data. We discuss the challenges of designing and maintain such a system, from information dissemination to harvesting, routing and privacy. Speaker's Biography
Dr. Mario Gerla, Professor, UCLA, Computer Science Dept. Dr. Gerla received his Engineering degree from the Politecnico di Milano, Italy, in 1966 and the M.S. and Ph.D. degrees from UCLA in 1970 and 1973. He became IEEE Fellow in 2002. At UCLA, he was part of a small team that developed the early ARPANET protocols under the guidance of Prof. Leonard Kleinrock. He worked at Network Analysis Corporation, New York, from 1973 to 1976, transferring the ARPANET technology to several Government and Commercial Networks. He joined the Faculty of the Computer Science Department at UCLA in 1976, where he is now Professor. At UCLA he has designed and implemented some of the most popular and cited network protocols for ad hoc wireless networks including distributed clustering, multicast (ODMRP and CODECast) and transport (TCP Westwood) under DARPA and NSF grants. He has lead the $12M, 6 year ONR MINUTEMAN project, designing the next generation scalable airborne Internet for tactical and homeland defense scenarios. He is now leading two advanced wireless network projects under ARMY and IBM funding. In the commercial network scenario, with NSF and Industry sponsorship, he has led the development of vehicular communications for safe navigation, urban sensing and location awareness. A parallel research activity covers personal P2P communications including cooperative, networked medical monitoring (see www.cs.ucla.edu/NRL for recent publications).. [ back to top ] . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Jointly Organized by Abstract There is an increasing level of concern among the networking research community that the current IP-based networks, including the NGN (Next Generation Network) recently standardized by ITU and placed in service, will not be able to cope with the ever increasing network users and devices and new broadband applications, while guaranteeing true quality of service (QoS) and a sufficient level of security and privacy. First, I will argue that the so-called “end-to-end design principle,” which has underpinned the present Internet development, is no longer an adequate guiding principle, and we must search for a new design principle in order to guarantee QoS and security in a future network environment, where traffic will be increasingly over radio channels, and end users are more likely to be mobile devices (than host machines). More importantly, an implicit assumption that we trust users in the network no longer holds in networks of today and tomorrow. Then, I will discuss the concept of “network virtualization,” which allows multiple instances of network architectures and/or protocols to run on separate virtual networks, facilitating the design, implementation and validation of a novel network architecture and protocols in a realistic environment. This approach is currently actively pursued by a number of research initiatives on future networks and implementation of experimental test beds in the U.S., Europe, Japan and elsewhere. Relatively few literature exists on system modeling and analysis of virtual networks other than empirical measurements of specific installations. We will discuss some modeling techniques that will be useful in the design and analysis of a virtual network. They are processor sharing (PS), loss network models and the notion of equivalent bandwidth. Speaker's Biography Hisashi Kobayashi (http://www.princeton.edu/kobayashi) earned his BE and ME degrees from the University of Tokyo and his Ph.D. from Princeton University. He worked for the IBM Research Division for 19 years (1967-86), where he was the founding director of its Tokyo Research Laboratory (1982-86). He joined the Princeton faculty as Dean of the School of Engineering and Applied Science (1986-91) and taught in the Electrical Engineering Department until June 2008. He invented a high-density digital recording scheme widely known as “partial-response coding and maximum-likelihood decoding” (PRML) (see the “History of Communications” column, IEEE Communication Magazine, March 2009), and was awarded the 2005 Eduard Rhein Technology Award. He also received Humboldt Prize (1979) and IFIP’s Silver Core Award (1980). He has been a Fellow of IEEE since 1977. He authored “Modeling and Analysis”(Addison Wesley 1978) and coauthored with Brian Mark “System Modeling and Analysis” (Pearson/Prentice Hall, 2008). Kobayashi has served as a scientific advisor for numerous organizations in the United States, Japan and Canada. He was on the International Advisory Board of Singapore’s Institute of System Science (1985-98) and Kent Ridge Digital Laboratory (1998-2001). Currently he advises the NICT Japan on their future Internet project AKARI and a new research project “Germany Laboratory (G-Lab),” for a future Internet design. Chaired by: A/P Zhong Wende Registration: FREE Free Admission REGISTER NOW! Date: 14 May 2009, Thursday [ back to top ] . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Date : 27th May 2009 (Wednesday) Voice Service Support over Cognitive Radio Networks Joint Optimization of Placement and Bandwidth Reservation for Relays in IEEE 802.16j Mobile Multihop Networks Blind Detection of Interleaver Parameters for Non-Binary Coded Data Streams Efficient Sample Rate Conversion in Software Radio Employing Folding Number System Tea Break Adaptive Power Allocation in Two-Way Amplify-and-Forward Relay Networks Impact of CSIT on the Tradeoff of Diversity and Spatial Multiplexing in MIMO Channels (ISIT 2009) Joint network and channel coding for wireless networks (SECON 2009, WiNC) Nonlinear network code for high throughput broadcasting with retransmissions (ISIT 2009) Please kindly register with Chai Ooy Mei eomchai@ntu.edu.sg by 22nd May 2009 at 12.00pm. [ back to top ] . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Date : 29th May 2009 (Friday) Our invited speaker is Professor David Gesbert, Eurecom Institute, France. This talk is organized by the Advanced Communication Research Program (ACRP) and Positioning & Wireless Technology Centre (PWTC), School of Electrical & Electronic Engineering, Nanyang Technological University. Abstract About Professor David Gesbert
D. Gesbert is or was a co-editor of several special issues on wireless networks and communications theory, for JSAC (2003, 2007), EURASIP Journal on Applied Signal Processing (2004, 2007), Wireless Communications Magazine (2006), including a current special issue of JSAC on cooperative communications in cellular networks. He authored or co-authored papers winning the 2004 IEEE Best Tutorial Paper Award (Communications Society) for a 2003 JSAC paper on MIMO systems, 2005 Best Paper (Young Author) Award for Signal Proc. Society journals, and the Best Paper Award for the 2004 ACM MSWiM workshop. He co-authored the book “Space time wireless communications: From parameter estimation to MIMO systems”, Cambridge Press, 2006. For more details, please visit http://www.eurecom.fr/~gesbert/. [ back to top ] . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Date : 12th Aug 2009 (Wednesday) Abstract In this talk, we describe the motivation of spectrum sharing, resulting new wireless applications, and present two models for spectrum sharing. The first model is based on a conventional way of looking at cognitive radios, where secondary access of spectrum is allowed with the constraint of limiting harmful interference to incumbent licensed systems. Under this model, we consider the problem of spectrum sensing and present some state-of-art approaches. The second model is based on cooperative cognitive radios, where secondary access is permitted under the constraint that a desired QoS metric of the licensed system is not adversely affected. Under this setting, we consider communication protocols employed by cooperative cognitive radios to share spectrum with licensed systems. Speaker's Biography If you have any queries you may contact Chai Ooy Mei at eomchai@ntu.edu.sg [ back to top ] . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Date : 18th Sept 2009 (Friday) Co-Organized by : Abstract Speaker's Biography If you have any queries you may contact Chai Ooy Mei at eomchai@ntu.edu.sg [ back to top ] . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Date : 02nd Nov 2009 (Monday) Co-Organized by : Abstract Speaker's Biography Dr. Quek has been actively involved in organizing and chairing sessions, and has served as a member of the Technical Program Committee in a number of international conferences. He served as the Technical Program Chair for Services & Applications Track for the IEEE Wireless Communications and Networking Conference (WCNC) in 2009. Dr. Quek is currently an Editor for Wiley Journal on Security and Communication Networks. Dr. Quek received the Singapore Government Scholarship in 1993, Tokyu Foundation Fellowship in 1998, and the A*STAR National Science Scholarship in 2002. He was honored with the 2008 Philip Yeo Prize of Outstanding Achievement in Research from the A*STAR Science and Engineering Research Council. Please visit --> POSTER If you have any queries you may contact Chai Ooy Mei at eomchai@ntu.edu.sg [ back to top ] . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Date : 06th Nov 2009 (Friday) Co-Organized by : Abstract Speaker's Biography Dr. Quek has been actively involved in organizing and chairing sessions, and has served as a member of the Technical Program Committee in a number of international conferences. He served as the Technical Program Chair for Services & Applications Track for the IEEE Wireless Communications and Networking Conference (WCNC) in 2009. Dr. Quek is currently an Editor for Wiley Journal on Security and Communication Networks. Dr. Quek received the Singapore Government Scholarship in 1993, Tokyu Foundation Fellowship in 1998, and the A*STAR National Science Scholarship in 2002. He was honored with the 2008 Philip Yeo Prize of Outstanding Achievement in Research from the A*STAR Science and Engineering Research Council. Please visit --> POSTER If you have any queries you may contact Chai Ooy Mei at eomchai@ntu.edu.sg . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Date : 28th Oct 2009 (Wednesday) Abstract First, we discuss the coexistence techniques based on PRN willingnes and a joint spectrum underlay/overlay technique. Second, to maximize the weighted sum rate (WSR) of the CRN, we utilize the Lagrangian dual composition tool and design shared subchannel assignment (SSA) approach assuming discrete-rate modulation. Significant performance enhancement in terms of WSR and convergence speed is observed than available methods, such as exclusive subchannel assignment (ESA), iterative waterfilling (IWF), and gradient-based dual update.Third, we present a novel duality technique to implement traffic matching in multicarrier systems, and steer the WSR weight vector to adapt the multiuser rate region to match different users' arrival rates. This method provides a significantly higher throughput and improved delay outage
performance than the conventional duality optimization scheme.
Finally, I briefly describe my future research plan and topics, including
multicast and cooperative relay. Speaker's Biography From April 2000 to July 2001, he was a Member of Technical Staff at the Centre for Wireless
Communications, Singapore.
From July 2001 to July 2002, he was a Post-doctorate Fellow at the ECE Department of the University of
Toronto. From August 2002 to August 2009, he was an Assistant Professor at
the ECE Department of the Iowa State University.
Since October 2009, he has been a visiting research faculty member at the EE Department of the
Wright State University. If you have any queries you may contact Chai Ooy Mei at eomchai@ntu.edu.sg
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Frederik Vanhaverbeke obtained his bachelor and master degree in electrical engineering at the University of Ghent in respectively 1992 and 1996. After two years of research in the domain of physical electronics, he joined the digital communications research group at the University of Ghent in 1998. He obtained a doctoral degree in electrical engineering in 2005, on the topic of 'channel overloading for CDMA systems.' From 2005 till now, he is a postdoc researcher at the same research group, but his research has shifted to packet protection strategies for video applications.
Dr Ying-Chang Liang is now Senior Scientist in the Institute for Infocomm Research (I2R), Singapore, where he has been leading the research activities in the area of cognitive radio and cooperative communications. He also holds adjunct associate professorship positions in Nanyang Technological University (NTU) and National University of Singapore (NUS), both in Singapore, and adjunct professorship position with University of Electronic Science & Technology of China (UESTC). He has been teaching graduate courses in NUS since 2004. From Dec 2002 to Dec 2003, Dr Liang was a visiting scholar with the Department of Electrical Engineering, Stanford University. His research interest includes cognitive radio, dynamic spectrum access, reconfigurable signal processing for broadband communications, space-time wireless communications, wireless networking, information theory and statistical signal processing. 
Meixia Tao received the B.S. degree in Electronic Engineering from Fudan University, Shanghai,
China, in 1999, and the Ph.D. degree in Electrical and Electronic Engineering from The Hong
Kong University of Science & Technology in 2003.
David Gesbert (IEEE SM) is Professor in the Mobile Communications Dept., Eurecom Institute, France. He obtained the Ph.D degree from Ecole Nationale Superieure des Telecommunications, France, in 1997.
Tony Q.S. Quek received the B.E. and M.E. degrees in Electrical and Electronics
Engineering from Tokyo Institute of Technology, Tokyo, Japan, in 1998 and 2000,
respectively. At Massachusetts Institute of Technology (MIT), Cambridge, MA, he earned the
Ph.D. in Electrical Engineering and Computer Science in Feb. 2008. Currently, he is a
Research Engineer at the Institute for Infocomm Research. He is also an Adjunct Assistant
Professor with the Division of Communication Engineering, Nanyang Technological
University.