Invited Speakers

Rui Zhang

Talk Title: Cost-Aware Green Cellular Networks with Energy and Communication Cooperation

Dr. Rui Zhang received the B.Eng. (First-Class Hons.) and M.Eng. degrees from the National University of Singapore in 2000 and 2001, respectively, and the Ph.D. degree from the Stanford University, Stanford, CA USA, in 2007, all in electrical engineering. Since 2007, he has worked with the Institute for Infocomm Research of Singapore, where he is now a Senior Scientist. Since 2010, he has joined the Department of Electrical and Computer Engineering at the National University of Singapore as an Assistant Professor. His current research interests include multiuser MIMO, cognitive radio, cooperative communication, green communication, wireless communication powered by energy harvester and wireless power transfer, smart grid, and optimization theory. He has authored/co-authored over 170 papers in internationally refereed journals and conferences. His work has led to significant scientific impact, with more than 10 published journal papers listed as Highly Cited Papers on ISI Web of Science. He was the recipient of the 6th IEEE Communications Society (ComSoc) Asia-Pacific Best Young Researcher Award in 2010, and the Young Investigator Award of the National University of Singapore in 2011. He has served for various IEEE conferences as Technical Program Committee (TPC) members and Organizing Committee members. He is now an elected member of the IEEE Signal Processing Society SPCOM (Signal Processing for Communications and Networking) Technical Committee (TC) and SAM (Sensor Array and Multichannel) TC, and an editor for the IEEE Transactions on Wireless Communications and the IEEE Transactions on Signal Processing. He has also served as Guest Editors for several special issues in IEEE and EUROSIP Journals. 

Leonid G. Kazovsky

Talk Title: Energy-Efficient Indoor Networks

Prof. Leonid Kazovsky joined Stanford University in 1990.  He founded Photonics and Networking Research Laboratory (PNRL) at Stanford University and leads PNRL since establishing it in 1990.  PNRL is conducting research on green (energy efficient) optical/wireless access, in-building networks, quasi-passive photonic components, and next-generation Internet architectures.
Prior to joining Stanford, Prof. Kazovsky was with Bellcore doing research on coherent, WDM, high-speed and other advanced optical fiber communication systems (later, Bellcore changed its name to Telcordia, and was acquired by Ericsson).  Prof. Kazovsky’s research of coherent optical systems resulted in what is widely considered key foundations of modern coherent systems. 

While on Bellcore assignments or Stanford sabbaticals, Prof. Kazovsky worked at the Heinrich Hertz Institute, Berlin, Germany; Hewlett-Packard Research Laboratories, Bristol, England; Technical University of Eindhoven, Eindhoven, the Netherland; Scuola Superiore St. Anne, Pisa, Italy; Danish Technical University, Copenhagen, Denmark; and Acreo, Stockholm, Sweden.  Most recently, during his 2013 sabbatical, he worked at the Universidad Carlos III de Madrid (UC3M) under the Chair of Excellence Program.

Through research contracts, consulting engagements, and other arrangements, Prof. Kazovsky worked with many industrial companies and U.S. Government agencies including Corning, Alcatel-Lucent, Sprint, DT, Huawei, DEC, GTE, AT&T, IVP, Lucent, Hitachi, KDD, Furukawa, Fujitsu, Optivision, and Perimeter on the industrial side; and NSF, DARPA, Air Force, Navy, Army, and BMDO on the government side. He also worked extensively with many leading VCs and intellectual property law firms. 

Prof. Kazovsky served on Editorial Boards of leading journals (IEEE Transactions on Communications, IEEE Photonics Technology Letters, Wireless Networks) and on Program Committees of leading conferences (OFC, CLEO, LEOS, SPIE, and GLOBECOM).  He also served as a reviewer for various IEEE and IEE Transactions, Proceedings, and Journals; funding agencies (NSF, OFC, ERC, NRC, etc.) and publishers (Wiley, MacMillan, etc.).  Recently, Prof. Kazovsky organized several workshops on hybrid optical/wireless networks at OFC and WCNC; he also co-edited a Special Issue of the IEEE Network Magazine on Next Generation Optical Access Networks.

Prof. Kazovsky authored or co-authored three books, three book chapters, sixty invited journal papers and invited conference talks, some 200 journal technical papers, and some 300 conference papers.  His latest book, Broadband Optical Access Networks, was published by John Wiley & Sons in 2011.

Prof. Kazovsky is a Fellow of IEEE and a Fellow of OSA.

Wenbo Wang

Talk Title: The Performance of the Macro-assisted Data-Only Carrier System in 5G Energy-Efficient Heterogeneous Networks

Wenbo Wang received the B.S., M.S., and Ph.D. degrees from Beijing University of Posts and Telecommunications (BUPT), Beijing, China, in 1986, 1989, and 1992, respectively. He is currently a Professor and executive vice dean of the Graduate School, BUPT. And he is the Assistant Director of the Key Laboratory of Universal Wireless Communication, Ministry of Education in China. He has published more than 200 journals and international conference papers, and six books. His current research interests include radio transmission technology, wireless network theory and software radio technology.

Ivan Djordjevic

Talk Title: On the Energy-efficient Multidimensional Coded Modulation for Optical Transport Networks

Optical transport networks are affected by limited bandwidth of information infrastructure, high power consumption, and heterogeneity of network segments. As a solution to all these problems, the multidimensional signaling has been proposed recently. In multidimensional signaling, all available degrees of freedoms have been used for conveyance information over spatial domain multiplexing (SDM) schemes. In electrical domain discrete-time basis functions (such as Slepian sequences) have been used. In optical domain, both polarization states and spatial modes have been used. Additionally, the orthogonal division multiplexing (ODM) is used in optical domain to enable beyond 1 Pb/s serial optical transport over single-mode fibers. With SDM, the serial optical transport over SDM fibers (few-mode fibers, few-core fibers, few-mode-few-core fibers) exceeding 10 Pb/s is possible. Concepts of statistical physics and information theory have been used in energy-efficient signal constellation design. LDPC-coded multidimensional signaling has been shown to be superior to conventional SDM schemes.

Dr. Djordjevic is a tenured Associate Professor in the Department of Electrical and Computer Engineering of College of Engineering of University of Arizona, with a joint appointment in the College of Optical Sciences. Dr. Djordjevic is an author/co-author of four books, over 360 journal/conference publications, and 26 US patents. Dr. Djordjevic serves as an Associate Editor for three journals including IEEE Communications Letters.

Sumei Sun

Talk Title: Wireless Power Transfer and Communication for Sensors: Dynamic Frame-Switching (DFS) Policy

Sumei Sun has been with Institute for Infocomm Research (I2R), Agency for Science, Technology, and Research (A*STAR), Singapore, since 1995, where she is currently Head of the Advanced Communication Technology Department, developing energy- and spectrum-efficient technologies for the next-generation communication systems. Her recent research interests include 5G transmission technologies, renewable energy management and cooperation in wireless systems and networks, and wireless transceiver design.
Dr. Sun served as Track Co-Chair of Mobile Networks, Applications, Services, IEEE Vehicular Technology Conference (VTC) 2014 Spring, Track Co-Chair of Transmission Technologies, IEEE VTC 2012 Spring, TPC Co-Chair of 14th (2014) and TPC Chair of 12th (2010) IEEE International Conference on Communications, General Co-Chair of 7th (2010) and 8th (2011) IEEE Vehicular Technology Society Asia Pacific Wireless Communications Symposium (APWCS), and Track Chair of Signal Processing for Communications, Asia-Pacific Signal and Information Processing Association Annual Summit and Conference 2010 (APSIPA ASC 2010). She is also an Editor for IEEE Transactions on Vehicular Technology and Editor for IEEE Wireless Communication Letters. She receives the “Top Associate Editor” recognition in 2012 and 2013, and “Top15 Outstanding Editors” recognition in 2014, all from IEEE Transactions on Vehicular Technology. She is a distinguished lecturer of IEEE Vehicular Society 2014-2016, a co-recipient of the 16th Annual IEEE International Symposium on Personal Indoor and Mobile Radio Communications Best Paper Award, and Distinguished Visiting Fellow of the Royal Academy of Engineering, UK, in 2014.

Matti Latva-aho

Talk Title: 5G - How Radical Can It Be?

The next generation of beyond 2020 mobile radio system is facing great challenges in terms of capacity demands and variety of services and usage scenarios. Besides increasing data rate requirements stemming from user needs, communication between non-human controlled entities with very low latency is gaining increasing interest. Research activities towards 5G systems are taking place at an accelerated pace in both at industry and academia.

Standardization towards 5G is expected to be launched very soon after WRC'15 and ITU definition for 5G requirements aiming at commercialization of the system around 2020. There are different views on the technical candidates for the radio access, network operation, spectrum use and allocation, which can be categorized as "evolutionary" vs. "revolutionary" paths towards next generation. New waveforms for flexible spectrum usage with better spectral efficiency, energy efficient radios, new multiple access techniques, massive MIMO systems for backhaul and access, practical cell coordination approaches, novel relaying and duplexing methods, opportunistic device to device communication as well as co-primary sharing of spectrum are some of the topics being investigated. One of the key questions, however, is: below or above 6GHz to start with?

Matti Latva-aho was born in Kuivaniemi, Finland in 1968. He received the M.Sc., Lic.Tech. and Dr. Tech (Hons.) degrees in Electrical Engineering from the University of Oulu, Finland in 1992, 1996 and 1998, respectively. From 1992 to 1993, he was a Research Engineer at Nokia Mobile Phones, Oulu, Finland.  During the years 1994 - 1998 he was a Research Scientist at Telecommunication Laboratory and Centre for Wireless Communications at the University of Oulu. Currently he is the Department Chair Professor of Digital Transmission Techniques at the University of Oulu, Department for Communications Engineering. Prof. Latva-aho was Director of Centre for Wireless Communications at the University of Oulu during the years 1998-2006 and Head of Department until 2014. His research interests are related to mobile broadband communication systems and currently his group focuses on 5G systems research. Prof. Latva-aho has published 300 conference or journal papers in the field of wireless communications. He has been TPC Chairman for PIMRC’06, TPC Co-Chairman for ChinaCom’07 and General Chairman for WPMC’08, CROWNCOM’14 and 5GU’14. He acted as the Chairman and vice-chairman of IEEE Communications Finland Chapter in 2000 – 2003. 

Markus Brunner

Talk Title: Energy and Resource efficient ICT at Service Providers

Dr. Marcus Brunner is head of standardization in the strategy and innovation department of Swisscom, Switzerland. He received his Ph.D. from the Swiss Federal Institute of Technology (ETH Zurich) in 1999. He is active in research and standardization since 20 years with experience in programmability of networks and services, self-organizing networks (SON), and many topics around packet-based networking technologies including information-centric networking, software-defined networking, and the future Internet. He has been running research and standards for energy efficient networking including energy-saving LTE base stations, energy-efficient routing protocol extensions (OSPF), green data centre networking with OpenFLow, energy-reduction for enterprises with M2M, and contributions from his group into BBF and 3GPP. He is currently in the Board of the Greentouch consortium.

Scott Xin Yin

Talk Title: CBI: a Scalable Energy Efficient Protocol for Metro/Access Networks

Prof. Xin Yin received the B.E. and M.Sc. degrees in electronics engineering from the Fudan University, China, in 1999 and 2002, respectively, and the Ph.D. degree in electrical engineering from the Ghent University, Belgium, in 2009. He has been a research assistant in the INTEC-IMEC, Ghent University since 2003. He is active in European and International projects such as DISCUS, Phoxtrot, MIRAGE and GreenTouch consortium. Since October 2013, he is working as a part-time professor at the same university, in the INTEC department. His current research interests include advanced opto-electronic circuits and subsystems, with emphasis on burst-mode receiver and CDR/EDC for optical access networks, and low-power mixed-signal integrated circuit design for photonic integrated circuits.

Geng Wu

Talk Title: Defining Future 5G Mobile Compute and Communications

Dr. Geng Wu is the Chief Scientist of Intel Wireless Standards and Advanced Technology and Head of Intel 5G Research. Dr. Wu has over 20 years of research and development experience in the wireless industry, contributed extensively to 2G, 3G and 4G air interface technologies and network architecture development. His current research interests include mobile computing and communication platforms, cloud RAN, heterogeneous networks and small cells, mmWave channel modeling, new air interface technologies, and cross-layer optimization for mobile services and applications. Prior to Intel, he was a director of Wireless Architecture and Standards at Nortel Networks, responsible for system performance, standards research and technology development, and wireless ecosystem collaboration. Dr. Wu has 30 granted US patents.

Paolo Monti

Talk Title: Impact of Energy Saving Techniques on a Device Lifetime

Paolo Monti received a Laurea degree in Electrical Engineering (2001) from the Politecnico di Torino, Italy, and a Ph.D. in Electrical Engineering (2005) from the University of Texas at Dallas (UTD). From 2006 to 2008 he worked as a Research Associate of the Open Networking Advance Research (OpNeAR) Lab at UTD. He  joined the Royal Institute of Technology (KTH) in September 2008 where he is currently an Assistant Professor in the School of Information and Communication Technology (ICT-COS) and the deputy director of the Optical Networks Laboratory (ONLab). He has more than seventy technical publications in international journals and in leading international conferences. Dr. Monti is serving on the editorial boards of the Springer Photonic Network Communications journal, he is one of the Guest Editors of the Special Issue on “Green Networking and Computing” of the Journal of High Speed Networks, and he is the leading editor of two special issues of the Springer Photonic Network Communications journal, one on "Green Optical Networks" and one on "Optical Networks Design". Dr. Monti regularly participates in several TPCs including IEEE Globecom and ICC where he also co-Chaired one workshop on network survivability (at ICC 2012) and two workshops on green broadband access (at ICC 2013 and at Globecom 2014). Dr. Monti was also the TPC chair of IEEE ONDM 2014 and served as a TPC co-chair for the Symposium on Optical and Grid Computing in IEEE ICNC 2014. His main research interests are within the networking aspects of all-optical networks, while part of his work has recently focused on the energy efficiency of telecommunication networks with particular emphasis on current and future converged (wired + wireless) broadband access solutions. Dr. Monti is a member of the IEEE Communication Society.

Jonathan Levine

Jonathan Levine currently holds the position of Member of Technical Staff for U.S. Cellular® at the company’s headquarters in Chicago, Il.  In his current role, he is responsible for the evolutionary architecture and functionality of the Radio Access Network (RAN).  This RAN utilizes LTE, EVDO, GSM, and CDMA technologies based on both the 3GPP and 3GPP2 standards groups.  Jonathan has focused efforts on RF planning and technology development at U.S. Cellular®’s headquarters in Chicago for nearly 10 years.  Before that, he served in the USAF as a member of the 264th Combat Communications Squadron from 1999-2005.  His commercial wireless engineering career began in 2005 after completion of his BSEE from Northern Illinois University.  Jonathan also holds a MSEE from the Illinois Institute of Technology (2008) and is an IEEE WCP.

Emad Alsusa 

Talk Title: Adaptive LSAS Transmission for Energy Optimisation in Low Density Cellular Networks

Large scale antenna systems (LSAS) transmission scheme has become a serious contender to future high data rate cellular communication systems. This paper proposes an adaptive technique to enhance the energy efficiency (EE) of such scheme. Using empirical data about power consumption per component, the proposed technique combines a novel adaptive discontinuous transmission (ADTx) with adaptive precoding selection and antenna array size optimisation in order to minimize the number of active antennas and associated components to minimize energy consumption while maintaining the same quality of service (QoS) performance as conventional (non-adaptive) LSAS. It will be shown that the proposed scheme provides significant EE improvements particularly in the case of low user-density scenarios.

Emad Alsusa is an associate professor at the University of Manchester, UK. After completing a PhD in Mobile Communications in 2000 he worked as a postdoctoral researcher at Edinburgh University until he joined Manchester University in 2003. Dr Alsusa’s research is focused on telecommunication techniques, particularly the area of signal processing for radio interference management and exploitation. He has been involved in the design and analysis of various communication systems, in particular developing signal processing algorithms for enhanced signal sensing and detection in the low signal to noise ratio regions and the development of radio resource management techniques for optimisation of capacity, power and spectrum-utilization. He is currently a PI on a number of research grants from both industry and government organisations. He supervises a team of 10 RAs and PhD researchers. He published well over 100 articles in top international journals and peer-reviewed conferences. He is a Senior Member of the IEEE and a Fellow member of the Academy of Higher Education. He has been a TPC member of numerous IEEE conferences including ICC, Globecomm and WCNC.

Claude Desset

Talk Title: Modeling the Hardware Power Consumption of Large Scale Antenna Systems

In order to address the ever-increasing need for wireless throughput while reducing the power consumption of cellular base stations, many approaches are developed at network, base station or component level. One of the most innovative ones is known as massive MIMO or large-scale antenna systems (LSAS). By using hundreds of antennas at the base station, the system promises to offer a large throughput at reduced total radiated power.
This paper presents a power model for cellular base stations and its application to LSAS. Its role is central in order to determine whether the reduced total radiated power of LSAS base stations also translates into reduced total power consumption for the base station, after taking all components supporting the many antenna chains into account.
Based on the modeling outcome, LSAS turns out to be a promising approach in order to reduce the power consumption of cellular base stations by a factor 10, while offering more throughput. While the research community is working on the many interesting challenges of this technology, we can conclude that from the point of view of power consumption, it is a valid alternative to traditional designs, and it will benefit even more from technology scaling in the coming years.

Claude Desset was born in Bastogne, Belgium, in 1974. Graduated (summa cum laude) as an electrical engineer from the Université catholique de Louvain (UCL), Louvain-la-Neuve, in 1997, he then achieved a PhD in the same university until 2001, funded by the Belgian national fund for scientific research (FNRS).

His doctoral research focused on joint source-channel coding for image transmissions, unequal error protection and image reconstruction from incomplete data. He also worked in channel coding, especially bit error rate approximation of error-correcting codes and code selection for specific applications.

In 2001 he joined IMEC, Leuven, Belgium, to work as a senior researcher in the design of ultra-low-power wireless communication systems. He focused on body area networks, developing ultra-wideband solutions and optimizing the power at system level by considering both air interface and front-end architecture. He also worked in MIMO communications, link adaptation, and turbo coding/processing. Since 2006, he works in a cross-disciplinary cognitive radio team, especially focusing on 802.11 and LTE standards. His work includes physical layer modeling, selection and design of DSP algorithms in line with implementation constraints, and adaptive systems where flexibility is exploited in order to optimize power-performance trade-offs.

He is author or co-author of some 80 publications as conference, journal or book chapter. He has been working on some 10 funded research projects, especially focusing on cellular network energy efficiency as well as massive MIMO. He has also been working in bilateral collaboration with worldwide leading industrial parters of IMEC as well as coaching some 15 master or PhD students.

Jafaar M.H. Elmirghani

Talk Title: GreenTouch GreenMeter Core Network Power Consumption Models and Results

This paper summarizes the energy efficiency improvement obtained by implementing a number of techniques in the core network investigated by the GreenTouch consortium. These techniques include the use of improved components with lower power consumption, mixed line rates (MLR), energy efficient routing, sleep and physical topology optimization. We consider an example continental network topology, NSFNET, to evaluate the total power consumption of a 2010 network and a 2020 network. The 2020 network results are based on traffic projections, the reductions in the equipment power consumption expected by 2020 and a range of energy saving measures considered by GreenTouch as outlined above. The projections of the 2020 equipment power consumption are based on two scenarios: a business as usual (BAU) scenario and a Green Touch (GT) (i.e. BAU+GT) scenario. The results show that the 2020 BAU scenario improves the network energy efficiency by a factor of 4.8x compared to the 2010 network as a result of the reduction in the network equipment power consumption. Considering the 2020 BAU+GT network where the equipment power consumption is reduced by a factor of 27x compared to the 2010 network, and where sleep, MLR and network topology are jointly optimized, a total improvement in energy efficiency of 64x is obtained. 

Jaafar M. H. Elmirghani is the Director of the Institute of Integrated Information Systems within the School of Electronic and Electrical Engineering, University of Leeds, UK. He joined Leeds in 2007 and prior to that (2000–2007) as chair in optical communications at the University of Wales Swansea he founded, developed and directed the Institute of Advanced Telecommunications and the Technium Digital (TD), a technology incubator/spin-off hub. He has provided outstanding leadership in a number of large research projects at the IAT and TD. He received the BSc degree (first-class Honours) in electrical and electronic engineering from the University of Khartoum, Sudan, in 1989 and the Ph.D. degree in the synchronization of optical systems and optical receiver design from the University of Huddersfield UK in 1994. He has co-authored Photonic switching Technology: Systems and Networks, (Wiley) and has published over 350 papers. He has research interests in optical systems and networks and signal processing. Prof. Elmirghani is Fellow of the IET, Fellow of the Institute of Physics and Senior Member of IEEE. He was Chairman of IEEE Comsoc Transmission Access and Optical Systems technical committee and was Chairman of IEEE Comsoc Signal Processing and Communications Electronics technical committee, and an editor of IEEE Communications Magazine. He was founding Chair of the Advanced Signal Processing for Communication Symposium which started at IEEE GLOBECOM’99 and has continued since at every ICC and GLOBECOM. Prof. Elmirghani was also founding Chair of the first IEEE ICC/GLOBECOM optical symposium at GLOBECOM’00, the Future Photonic Network Technologies, Architectures and Protocols Symposium. He chaired this Symposium, which continues to date under different names. He received the IEEE Communications Society Hal Sobol award, the IEEE Comsoc Chapter Achievement award for excellence in chapter activities (both in 2005), the University of Wales Swansea Outstanding Research Achievement Award, 2006, the IEEE Communications Society Signal Processing and Communication Electronics outstanding service award, 2009 and a best paper award at IEEE ICC’2013.He is currently an editor of IET Optoelectronics, editor of Journal of Optical Communications, Co-Chair of the GreenTouchWired, Core and Access Networks Working Group, an adviser to the Commonwealth Scholarship Commission, member of the Royal Society International Joint Projects Panel and member of the Engineering and Physical Sciences Research Council (EPSRC) College.  He has been awarded in excess of £20 million in grants to date from EPSRC, the EU and industry and has held prestigious fellowships funded by the Royal Society and by BT. He is an IEEE Distinguished Lecturer.

Wenyi Zhang

Talk Title: The Impact of Cooperation on Local Delay and Energy Efficiency of Poisson Networks

Local delay characterizes the number of time slots required for a node to successfully transmit a packet to its target receiver. In this talk, we explore the impact of coordinated transmission on the mean local delay and the energy efficiency, in a Poisson network model. Leveraging tools from point process theory, we derive analytical expressions of the mean local delay and the long-term energy efficiency, without and with coordinated transmission. We find that coordinated transmission greatly decreases the mean local delay, and also improves the long-term energy efficiency under certain network configurations.

Wenyi Zhang attended Tsinghua University and obtained his Bachelor's degree in Automation in 2001. He studied in the University of Notre Dame, Indiana, USA, and obtained his Master's and Ph.D. degrees, both in Electrical Engineering, in 2003 and 2006, respectively. Prior to joining the faculty ofDepartment of Electronic Engineering and Information Science, University of Science and Technology of China, he was affiliated with the Communication Science Institute, University of Southern California, as a postdoctoral research associate, and with Qualcomm Incorporated, Corporate Research and Development. His research interests span over digital communications and networking, information theory, and statistical signal processing.






2014 Patrons

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