IEEE / UBC ECE Seminar

Title: Self-driving Networks: Challenges and Opportunities
Presented by:  Prof. Raouf Boutaba, University of Waterloo, Canada

Date and time: Thursday, October 17, 2019, at 2 pm

Location: Room 418, Macleod Building, UBC, 2356 Main Mall, Vancouver, BC, Canada

Abstract: Automated management has been the holy grail of network management research for decades; it aims at achieving autonomous networks, i.e., networks capable to autonomously monitor their status, analyze problems, make decisions, and execute corrective actions. Despite several attempts to achieve autonomous networks in the past, their practical deployments have largely remained unrealized. Several factors are attributed to this, including the existence of many stakeholders with conflicting goals, reliance on proprietary solutions, the inability to process network monitoring data at scale, and the lack of global visibility restricting network-wide optimizations. The stars are now aligned to realize the vision of autonomous networks thanks to (i) advances in network softwarization; (ii) recent breakthroughs in machine learning; and (iii) the availability of large-scale data processing platforms. However, a number of challenges must be addressed in order to create the synergy between these different technology domains and achieve autonomous (a.k.a., self-driving networks) networks. This talk will discuss some of these challenges with particular focus on programmable network monitoring leveraging network softwarization, predictive machine learning for automated management decision making, and on-demand orchestration of network services. 

Biography:  Dr. Raouf Boutaba is a University Chair Professor of Computer Science at the University of Waterloo. He also holds an INRIA International Chair in France. He is the founding Editor in Chief of the IEEE Transactions on Network and Service Management (2007-2010), and the current Editor-in-Chief of the IEEE Journal on Selected Areas in Communications (JSAC). He served as the general or technical program chair for a number of international  conferences including IM, NOMS and CNSM. His research interests are in the areas of network and service management. He has published extensively in these areas and received several journal and conference Best Paper Awards such as the IEEE 2008 Fred W. Ellersick Prize Paper Award. He also received other recognitions, including the Premier’s Research Excellence Award, Industry research excellence Awards, fellowships of the Faculty of Mathematics, of the David R. Cheriton School of Computer Science and several outstanding performance awards at  the University of Waterloo. He has also received the IEEE Communications Society Hal Sobol Award and the IFIP Silver Core in 2007, the IEEE Communications Society Joe LociCero and the Dan Stokesbury awards in 2009, the Salah Aidarous award in 2012, the IEEE Canada McNaugthon Gold Medal in 2014, the Technical Achievement Award of the IEEE Technical Committee on Information Infrastructure and Networking as well as the Donald W. McLellan Meritorious Service Award in 2016. He served as a distinguished lecturer for the IEEE Computer and Communications Societies. He is fellow of the IEEE, a fellow of the Engineering Institute of Canada and a fellow of the Canadian Academy of Engineering.

IEEE Communications Society Distinguished Lecture

Title: Caching-enabled Device-to-device Communications for Video Transmission
Presented by:  Prof. Andreas Molisch, University of Southern California

Date and time:  Friday, October 18, 2019, at 11 am

Location: Room 418, Macleod Building, UBC, 2356 Main Mall, Vancouver

Abstract: Video content for streaming or downloading has the special property of a concentrated popularity distribution, i.e., a small percentage of all videos account for the vast majority of data traffic through wireless networks. Yet traditional wireless networks treat videos like any other files, transmitting them through unicast links. Over the past years, we have proposed and analyzed a new method of video transmission that is based on caching video files on user devices, and then distributing them on demand via spectrally efficient device-to-device (D2D) communications over short distances, thus converting (cheap) memory on the devices into bandwidth. This talk will give an overview of the method, and describe some of our more recent work that concentrated on information-theoretic scaling laws, analysis of popularity distribution based on large sets of measured data, and the tradeoff of energy efficiency and battery lifetime with network throughput.  

Biography:  Andreas F. Molisch is the Solomon Golomb – Andrew and Erna Viterbi Chair Professor at the University of Southern California. His research interest is wireless communications, with emphasis on wireless propagation channels, multi-antenna systems, ultrawideband signaling and localization, novel modulation methods, and caching for wireless content distribution. He is the author of four books, 20 book chapters, more than 250 journal papers, 340 conference papers, as well as 80 patents. He is a Fellow of the National Academy of Inventors, IEEE, AAAS, and IET, as well as Member of the Austrian Academy of Sciences and recipient of numerous awards, including the Sumner award of the IEEE and the Armstrong award of ComSoc.

IEEE / UBC ECE Seminar

Title: Applications of Game Theory in Blockchain
Presented by:  Prof. Dusit Niyato, Nanyang Technological University, Singapore

Date and time: Friday, October 4, 2019, at 2 pm

Location: Room 418, Macleod Building, UBC, 2356 Main Mall, Vancouver

Abstract: Blockchain has emerged as a new ledger technology for data and transactions management. This decentralized ledger technology relies on consensus protocols and incentive mechanisms among a number of participants, i.e., miners and users, to achieve high data security and integrity. However, the participants are rational and will act according to their interests. As such, game theory appears to be a suitable tool to analyze and optimize the blockchain networks. In this talk, we will present the basics of game theory and review some typical game models such as non-cooperative game, hierarchical game, and evolutionary game that are adopted in blockchain. Then, the game formulations for mining pool management, computing resource allocation, and risk management in blockchain networks will be presented. Some research directions will be also discussed. 

Biography:  Dusit Niyato is currently a professor in the School of Computer Science and Engineering and, by courtesy, School of Physical & Mathematical Sciences, at the Nanyang Technological University, Singapore. He received B.E. from King Mongkuk’s Institute of Technology Ladkrabang (KMITL), Thailand in 1999 and Ph.D. in Electrical and Computer Engineering from the University of Manitoba, Canada in 2008. He has published more than 380 technical papers in the area of wireless and mobile networking, and is an inventor of four US and German patents. He has authored four books including “Game Theory in Wireless and Communication Networks: Theory, Models, and Applications” with Cambridge University Press. He won the Best Young Researcher Award of IEEE Communications Society (ComSoc) Asia Pacific (AP) and The 2011 IEEE Communications Society Fred W. Ellersick Prize Paper Award. Currently, he is serving as a senior editor of IEEE Wireless Communications Letter, an area editor of IEEE Transactions on Wireless Communications (Radio Management and Multiple Access), an area editor of IEEE Communications Surveys and Tutorials (Network and Service Management and Green Communication), an editor of IEEE Transactions on Communications, an associate editor of IEEE Transactions on Mobile Computing, IEEE Transactions on Vehicular Technology, and IEEE Transactions on Cognitive Communications and Networking. He was a guest editor of IEEE Journal on Selected Areas on Communications. He was a Distinguished Lecturer of the IEEE Communications Society for 2016-2017. He was named the 2017, 2018 highly cited researcher in computer science. He is a Fellow of IEEE.

IEEE / UBC ECE Seminar

Title: Transmission Beyond Linear Capacity in Fibre Optics – A Nonlinear Fourier Transform Approach
Presented by: Prof. Terence Chan, University of South Australia

Date and time: Monday, January 21, 2019, at 12 pm

Location: Room 418, Macleod Building, UBC, 2356 Main Mall, Vancouver

Abstract: Fibre optical communications underpin the transmission of global data traffic, supporting our information driven society and economy. However, as the demand for transmission capacity has been continuing to increase exponentially, the global fibre optic communication system (based on current technologies) will soon reach its limit, known as the Linear Capacity Limit. Such limit is due to the nonlinearity in optical fibres, which can significantly distort signals in a nonlinear fashion, especially when signal power is high. Recently, a novel solution to incorporate fibre nonlinearity into the communication model has been introduced based on Nonlinear Fourier Transform (NFT). In this approach, fibre dispersion and nonlinearity are incorporated when defining the independent nonlinear modes in the NFT domain that propagate through the fibre without any distortion. Analysis has suggested that this NFT based approach does not suffer the same fibre nonlinearity-induced limitation as in conventional systems (where data rate will peak and decay as power increases beyond a threshold).These evidence suggest that NFT is a very promising approach to cope with nonlinearities and to achieve transmission capacity beyond linear capacity limit. In this talk, we will discuss such a new NFT based transmission systems and identify some challenges that it faces.

Biography: Terence Chan completed his PhD in 2001. He was an Assistant Professor at The Chinese University of Hong Kong in 2001. From February 2002 to June 2004, he was a Post-doctoral Fellow in the Department of Electrical and Computer Engineering at the University of Toronto. In 2004, he became an Assistant Professor at the Department of Computer Science in University of Regina, Canada. He is now an Associate Professor in Institute for Telecommunications Research at the University of South Australia. His expertise is in the areas of information theory and communications networks. Some highlights of his work include the characterization of the relation between information inequalities and group theoretic inequalities, the proof for the equivalence of characterization of network coding capacity region and the cone of all entropy functions and sub-optimality of linear network codes. In the past few years, he has focused on the area of fibre optical communications based on nonlinear Fourier transform.

IEEE / UBC ECE Seminar

Title: Orthogonal Time Frequency Space Modulation for High-Mobility Wireless Channels
Presented by: Prof. Emanuele Viterbo, Monash University, Australia

Date and time: Wednesday, September 26, at 11:15 am

Location: Room 418, Macleod Building, UBC, 2356 Main Mall, Vancouver

Abstract: Orthogonal time frequency space (OTFS) modulation is very effective in high Doppler channels by transmitting the information signals in the delay–Doppler domain rather than in the time–frequency domain. Moreover, OTFS provides uniform channel gains across all the transmitted signals thus ensuring the same signal-to-noise ratio (SNR) for all input signals. In this talk, we present the explicit relation between OTFS transmit and receive signals for the delay–Doppler channel with a limited number of paths with delay and Doppler. In particular, we analyze the effect of fractional Doppler on the received signal and show how it causes inter Doppler interference (IDI). We then propose a low-complexity iterative algorithm based on message passing that effectively detects the information signals by canceling IDI. Furthermore, the message passing algorithm complexity scales linearly and can be applied to large-scale OTFS systems. Simulation results show that the OTFS with the proposed algorithm greatly outperforms the orthogonal frequency division multiplexing (OFDM) schemes in typical wireless channels.

Biography: Emanuele Viterbo (M’95–SM’04–F’11) is currently a Professor in the ECSE Department and an Associate Dean in Graduate Research at Monash University, Melbourne, Australia. He received his Ph.D. in 1995 in Electrical Engineering, from the Politecnico di Torino, Torino, Italy. From 1990 to 1992 he was with the European Patent Office, The Hague, The Netherlands, as a patent examiner in the field of dynamic recording and error-control coding. Between 1995 and 1997 he held a post-doctoral position in the Dipartimento di Elettronica of the Politecnico di Torino. In 1997-98 he was a post-doctoral research fellow in the Information Sciences Research Center of AT&T Research, Florham Park, NJ, USA. From 1998-2005, he worked as Assistant Professor and then Associate Professor, in Dipartimento di Elettronica at Politecnico di Torino. From 2006-2009, he worked in DEIS at University of Calabria, Italy, as a Full Professor. Prof. Viterbo is an ISI Highly Cited Researcher (2009). He was an Associate Editor of the IEEE Transactions on Information Theory, the European Transactions on Telecommunications and the Journal of Communications and Networks, and Guest Editor for the IEEE Journal of Selected Topics in Signal Processing: Special Issue on Managing Complexity in Multiuser MIMO Systems. He was awarded a NATO Advanced Fellowship in 1997 from the Italian National Research Council. His main research interests are in lattice codes for the Gaussian and fading channels, algebraic coding theory, algebraic space-time coding, digital terrestrial television broadcasting, digital magnetic recording, and irregular sampling.

IEEE / UBC ECE Seminar

Title: Slicing the next Generation Telecom Core Networks: Service Admission Control
Presented by: Prof. Vahid Shah-Mansouri, University of Tehran, Iran

Date and time:  Friday, August 31, 2018 at 11 am

Location: Room 418, Macleod Building, UBC, 2356 Main Mall, Vancouver

Abstract: Agile service provisioning for services with strict service level agreement (SLA) requirement is a new paradigm for service providers and network operators. A new service requires resources from different parts of the network. It requires independent life cycle, isolation from other services, and independent management. Resource allocation as well as life cycle management of new services, which co-exist with already deployed services arises new challenges. Network slicing is proposed to support simultaneous independent services on a single network. A network slice is viewed as a logical end-to-end network that can be dynamically created, modified, and released. A network slice provides a service with specific SLA. In this talk, I will review the concept of slicing for the core network. Then, we propose an admission control model for the new services requested in a telecom operator with dynamic slices.

Biography: Dr. Vahid Shah-Mansouri is an Assistant Professor in the School of Electrical and Computer Engineering at the University of Tehran, Iran. His research interests include mathematical modelling, protocols design, and performance evaluation of telecommunications and computer networks.

IEEE / UBC ECE Seminar

Title: A Novel System for 5G Indoor Service Provisioning
Presented by:  Prof. Pin-Han Ho, University of Waterloo

Date and time:  Thursday, August 2, at 11 am

Location: Room 418, Macleod Building, UBC, 2356 Main Mall, Vancouver

Abstract: The talk presents a novel distributed antenna access architecture that allows the antenna units of an RRU to be distributed over a wide geographical range, instead of being hosted locally at the RRU, so as to achieve a cost-effective solution of 5G indoor service provisioning. The proposed architecture takes advantage of multi-pair LAN cables to support simultaneous transmission of multiple intermediate frequency (IF) signals between the RRU and each distributed antenna unit (DAU), so as to meet the high bandwidth requirements and overcome the non-line-of-sight nature of the indoor environment. To explore the capacity of the multi-pair cables, we introduce a real-time multi-pair Air-to-Cable (MP-A2C) scheduler that allows for a graceful mapping between the radio signals of each DAU and sub-carriers of the cable twisted pairs. We will show via extensive simulation that the formulated optimization problem based on the A2C mapping task can easily lead to quasi-optimal schedules. 

Biography:  Pin-Han Ho received the B.Sc. and M.Sc. degrees from the Department of Electrical Engineering, National Taiwan University, Taipei, Taiwan, in 1993 and 1995, respectively, and the Ph.D. degree from Queen’s University, Kingston, ON, Canada, in 2002. He is currently a Professor with the Department of Electrical and Computer Engineering, University of Waterloo, Waterloo, ON, Canada. His current research interests include survivable network design and fiber-wireless network integration.

IEEE ComSoc Distinguished Lecture

Title: Integration of Electric Vehicles in Smart Grids
Presented by:  Prof. Ying-Jun Angela Zhang, The Chinese University of Hong Kong

Date and time:  Monday, July 30, at 11 am

Location:  Room 418, Macleod Building, UBC, 2356 Main Mall, Vancouver

Abstract: The recent surge in electric vehicle adoption worldwide brings both challenges and opportunities to the electricity power grid. In this talk, we will first introduce our recent work on coordinated electric vehicle charging when the knowledge of future events is unknown. We will then show how the battery systems in electric vehicles can contribute to stabilizing the grid frequency. 

Biography:  Ying-Jun Angela 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 research interests include mainly wireless communications systems and smart power systems, in particular optimization techniques for such systems.  She serves as the Chair of the Executive Editor Committee of the IEEE Transactions on Wireless Communications. Previously, she served many years as an Associate Editor of the IEEE Transactions on Wireless Communications, IEEE Transactions on Communications, Security and Communications Networks (Wiley), and a Feature Topic in the IEEE Communications Magazine. She has served  on the organizing committee of major IEEE conferences including ICC, GLOBECOM, SmartGridComm, VTC, CCNC, ICCC, and MASS. She is now the Chair of IEEE ComSoc Emerging Technical Committee on Smart Grid. She was a Co-Chair of the IEEE ComSoc Multimedia Communications Technical Committee and the IEEE Communication Society GOLD Coordinator. She was the co-recipient of the 2014 IEEE ComSoc APB Outstanding Paper Award, the 2013 IEEE SmartGridComm Best Paper Award, and the 2011 IEEE Marconi Prize Paper Award on Wireless Communications. She was the recipient of 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. Dr. Zhang is a Fellow of IET and a Distinguished Lecturer of IEEE ComSoc.

IEEE ComSoc Distinguished Lecture

Title: Economic Thinking of Communication Networks
Presented by:  Prof. Jianwei Huang, The Chinese University of Hong Kong

Date and time:  Monday, July 9, at 11 am

Location:  Room 418, Macleod Building, UBC, 2356 Main Mall, Vancouver

Abstract: Today’s communication networks are highly complex, carry heterogeneous traffic in diverse environments, and are often owned by multiple profit-making entities. To successfully maintain, optimize, and upgrade such large distributed networks, it is important to design new economic incentive mechanisms as well as develop new technologies. The market deregulation of the telecommunication industry in many countries makes such economic consideration even more urgent, as there are often conflicting goals between the regulators and the commercial operators. We will first illustrate how economics can help us better understand the networking industry reality, predict user behaviors, envision new network services, and provide policy recommendations. Then we will focus on the case study of incentive mechanisms for user-provided networks (UPNs). UPNs is a new communication paradigm, which enables users to improve their communications experiences by exploiting the diverse communication needs and resources of other users. The success of UPNs, however, relies on carefully designed incentive mechanisms that effectively encourage users’ voluntary participations and cooperations. We will introduce a new paradigm of cooperative video streaming based on the concept of UPN, where mobile users crowdsource their Internet connectivities and adaptively choose video downloading sequences and streaming qualities. We will introduce a multi-dimensional auction framework, which effectively incentivizes users to cooperate in a distributed fashion.

Biography:  Jianwei Huang is an IEEE Fellow, a Distinguished Lecturer of IEEE Communications Society, and a Clarivate Analytics Highly Cited Researcher in Computer Science. He is a Professor and Director of the Network Communications and Economics Lab (ncel.ie.cuhk.edu.hk), in the Department of Information Engineering at the Chinese University of Hong Kong. He received Ph.D. from Northwestern University in 2005, and worked as a Postdoc Research Associate at Princeton University during 2005-2007. His main research interests are in the area of network economics and games, with applications in wireless communications, networking, and smart grid.  Dr. Huang is the co-author of 9 Best Paper Awards, including IEEE Marconi Prize Paper Award in Wireless Communications in 2011, the IEEE Communications Society Young Professional Best Paper Award in 2017, and Best (Student) Paper Awards from IEEE WiOpt 2015/2014/2013, IEEE SmartGridComm 2012, WiCON 2011, IEEE GLOBECOM 2010, and APCC 2009. He has co-authored six books: “Wireless Network Pricing,” “Economics of Database-Assisted Spectrum Sharing,” “Monotonic Optimization in Communication and Networking Systems,” “Cognitive Mobile Virtual Network Operator Games,” “Social Cognitive Radio Networks,” and “Radio Resource Management for Mobile Traffic Offloading in Heterogeneous Cellular Networks.” He received the CUHK Young Researcher Award in 2014 and IEEE ComSoc Asia-Pacific Outstanding Young Researcher Award in 2009. Dr. Huang has served as an Editor of IEEE Transactions on Mobile Computing, IEEE/ACM Transactions on Networking, Editor of IEEE Transactions on Network Science and Engineering, Editor of IEEE Transactions on Cognitive Communications and Networking, Editor of IEEE Transactions on Wireless Communications, Editor of IEEE Journal on Selected Areas in Communications – Cognitive Radio Series, Editor and Associate Editor-in-Chief of IEEE Communications Society Technology News. He has served as a Guest Editor of IEEE Journal on Selected Areas in Communications, IEEE Transactions on Smart Grid, IEEE Network, and IEEE Communications Magazine. He also serves as a Co-Series-Editor of Wiley Information and Communication Technology Series, an Area Editor of Springer Encyclopedia of Wireless Networks, and a Section Editor for Springer Handbook of Cognitive Radio.   Dr. Huang has served as Chair of IEEE Communications Society Cognitive Network Technical Committee, Chair of IEEE Communications Society Multimedia Communications Technical Committee, and a Steering Committee Member of IEEE Transactions on Multimedia. He has served as or will serve the General/TPC/Symposium Co-Chairs of IEEE ICC 2020, NetGCoop 2018/2014, IEEE WiOpt 2018/2017/2012, IEEE SDP 2017/2016/2015, IEEE ICCC 2015/2012, IEEE SmartGridComm 2014, IEEE GLOBECOM 2017/2013/2010, IWCMC 2010, and GameNets 2009. He is the recipient of IEEE ComSoc Multimedia Communications Technical Committee Distinguished Service Award in 2015 and IEEE GLOBECOM Outstanding Service Award in 2010.

IEEE ComSoc Distinguished Lecture

IEEE ComSoc Distinguished Lecture, sponsored by the IEEE Vancouver Joint Communications Chapter

Title: Physical Layer Millimeter-wave Communications
Presented by:  Prof. Danijela Cabric, UCLA

Date and time:  Monday, June 11, 2018, at 4 pm

Location: Room 418, Macleod Building, UBC, 2356 Main Mall, Vancouver

Abstract: Millimeter wave (mmWave) communications is viewed as the key enabler of 5G cellular networks due to vast spectrum availability that could boost peak rate and capacity. Due to increased propagation loss in mmWave band, transceivers with massive antenna array are required to meet link budget. While massive antenna arrays enable high gain, directionality and user multiplexing, practical realizations face many challenges in radio design and physical layer processing. In this talk, we first review emerging massive array architectures for mmWave communications and compare their performance, power consumption, and cost with comprehensive hardware block model under typical application use cases. We then discuss two important physical layer design aspects in mobile mmWave networks: directional link establishment via initial access and directional link maintenance via mmWave channel tracking. Lastly, we present the state-of-the-art designs of current mmWave standards, discuss their limitation and provide perspectives on innovative approaches for performance boosts and hardware improvements.

Biography:  Danijela Cabric is Professor in the Electrical and Computer Engineering Department at the University of California, Los Angeles. Her research interests include novel radio architectures, signal processing, communications, machine learning and networking techniques for cognitive radio, 5G and massive MIMO systems. Dr. Cabric received the Samueli Fellowship in 2008, the Okawa Foundation Research Grant in 2009, Hellman Fellowship in 2012 and the National Science Foundation Faculty Early Career Development (CAREER) Award in 2012. She served as an Associate Editor in IEEE Journal on Selected Areas in Communications (Cognitive Radio series) and IEEE Communications Letters, and TPC Co-Chair of 8th International Conference on Cognitive Radio Oriented Wireless Networks (CROWNCOM) 2013. She is now an Associate Editor of IEEE Transactions of Cognitive Communications and Networking. She is a Senior Member of IEEE and ComSoc Distinguished Lecturer.