Wireless Channel Modelling of Drone-Ground links using RF measurements

K.V.S. Hari, Department of ECE, Indian Institute of Science, Bangalore

February 7, 2020

 

Abstract

In this talk, Prof. Hari will briefly introduce the motivation to study channel modeling followed by a brief overview of the experiments in channel measurements leading to the IEEE 802.16 standard. He will present the challenges in developing a communication system for drone communication links using current systems like LTE and the motivation to study the wireless channel models for such networks. Also, he will present the drone-ground wireless channel measurement system design, data collection methodology, and preliminary results of the analysis based on the experiments that have been carried out on the campus of the Indian Institute of Science, Bangalore.


Brief Curriculum Vitae

K.V.S. Hari is a Professor in the Department of ECE, Indian Institute of Science, Bangalore. He holds a BE (ECE) degree from Osmania University, Hyderabad, MTech (Radar and Communication Systems) from IIT Delhi and PhD (Systems science) from U C San Diego and has been a visiting faculty at Stanford University (1999-00) and Affiliate Professor at KTH- Royal Institute of Technology, Stockholm (2010-16). His research interests are in Signal Processing with applications to 5G wireless communications, radar systems, autonomous vehicles, neuroscience, and affordable MRI systems. He is a co-author of the IEEE 802.16 standard on wireless channel models. He was an Editor of EURASIP’s Signal Processing (2006- 16) and is currently the Editor-in-Chief (Electrical Sciences) of Sadhana, the journal of the Indian Academy of Sciences published by Springer. He is a Fellow of the Indian National Academy of Engineering and a Fellow of IEEE. He is on the Board of Governors, IEEE Signal Processing Society as Regional Director-at-Large of Asia-Pacific (2018-19) and as VP Membership (2020-22). More details at http://ece.iisc.ac.in/~hari

 

 

 

Silicon Carbide power devices: making the transition from Silicon

Victor Veliadis, Deputy Executive Director and CTO of Power America

January 21, 2019

 

Abstract

Silicon power devices have dominated power electronics due to their low cost volume production, excellent starting material quality, ease of processing, and proven reliability. Although Si power devices continue to make significant progress, they are approaching their operational limits primarily due to their relatively low bandgap and critical electric field, which result in high conduction and switching losses, and poor high temperature performance. In this presentation, the favorable material properties of Silicon Carbide, which allow for highly efficient power devices with reduced form factor and relaxed cooling requirements, will be highlighted. Device fabrication will be discussed with an emphasis on the processes that do not carry over from the mature Si manufacturing world and are thus tailored to SiC. In particular, the talk will stress the design and fabrication of SiC MOSFETs that are presently being inserted in the majority of SiC based power electronic systems. Finally, common edge termination techniques, which allow SiC devices to reach their full high-voltage potential, and their impact on device performance will be outlined.


Brief Curriculum Vitae

Dr. Victor Veliadis is Deputy Executive Director and CTO of Power America, which is a U.S Department of Energy wide bandgap power electronics public-private Manufacturing Institute. Dr. Veliadis manages a budget in excess of $30 million per year that he strategically allocates to over 35 industrial, University, and National-Laboratory projects, to enable US leadership in WBG power electronics manufacturing, work force development, job creation, and energy savings.

Dr. Veliadis has given over 60 invited presentations/keynotes/tutorials, and is an IEEE Fellow and an IEEE EDS Distinguished Lecturer. He has 25 issued US patents, 3 book chapters, and 115 peer-reviewed technical publications to his credit. Dr. Veliadis is also Professor in Electrical and Computer Engineering at North Carolina State University. He received the five-year diploma degree from the National Technical University of Athens Greece in 1990, and the Masters and Ph.D. degrees from Johns Hopkins University in 1992 and 1995, respectively, all in Electrical and Computer Engineering. Prior to being named Deputy Executive Director and CTO of Power America in 2016, Dr. Veliadis spent 21 years in the semiconductor industry where his work included design, fabrication, and testing of SiC SITs, JFETs, MOSFETs, Thyristors, and JBS, Schottky, and PiN diodes in the 1-12 kV range. Dr. Veliadis has worked for a small (12 employees) company, for Lucent Technologies, and for Northrop Grumman Corporation. He has taught at Johns Hopkins University, St. Joseph University and Ursinus College.

 

 

 

Microelectronic Systems for Improved Quality of Life

Julius Georgiou, Associate Professor, Department of ECE, University of Cyprus

March 28, 2018

 

Abstract

Microelectronic revolutions come in waves that are driven by necessity. Currently, the aging population is creating a need for various kinds of electronic systems to improve their quality of life. These include the restoration of lost functionality via electronic implants, better health screening technology and non-invasive monitoring in the home environment. This talk presents work that has been done towards addressing these needs, whether it be through the development of new required building blocks or through the development of more complex systems that combine custom built hardware and software. In particular the talk covers work done towards developing a vestibular implant for balance restoration, a single chip low-power imager for a bionic eye, a cancer screening capsule for detecting early-stage carcinomas in the small intestine and a bio-inspired acoustic scene analysis system.
 


Brief Curriculum Vitae

Julius Georgiou (IEEE M’98-SM’08) is an Associate Professor at the University of Cyprus. He received his M.Eng degree in Electrical and Electronic Engineering and Ph.D. degree from Imperial College London in 1998 and 2003 respectively. For two years he worked as Head of Micropower Design in a technology start-up company, Toumaz Technology. In 2004 he joined the Johns Hopkins University as a Postdoctoral Fellow, before becoming a faculty member at the University of Cyprus from 2005 to date. He is one of the co-founders of AJM Med-i-CAPs Ltd.

Prof. Georgiou is a member of the IEEE Circuits and Systems Society, is the Chair of the IEEE Biomedical and Life Science Circuits and Systems (BioCAS) Technical Committee, as well as a member of the IEEE Circuits and Systems Society Analog Signal Processing Technical Committee. He served as the General Chair of the 2010 IEEE Biomedical Circuits and Systems Conference and is the Action Chair of the EU COST Action ICT-1401 on “Memristors-Devices, Models, Circuits, Systems and Applications - MemoCIS”. Prof. Georgiou has been selected as an IEEE Circuits and Systems Society Distinguished Lecturer for 2016-2017. He is also is an Associate Editor of the IEEE Transactions on Biomedical Circuits and Systems and Associate Editor of the Frontiers in Neuromorphic Engineering Journal. He is a recipient of a best paper award at the IEEE ISCAS 2011 International Symposium and at the IEEE BioDevices 2008 Conference. In 2016 he received ONE Award from the President of the Republic of Cyprus for his research accomplishments.

 

 

 

Using social media and collective events to understand human dynamics

Alexander V. Mantzaris, Assistant Professor of Statistics, University of Central Florida (UCF)

July 21, 2017

 

Abstract

I will talk about my research from the past few years. One aspect is in utilizing Twitter data to understand the exchange of information between users with an emphasis on the spikes produced by viral exchange of content. Another area of research I am participating in is the analysis of the Eurovision song contest. I will present some of the interesting results that come from an improved methodological analysis that I've recently worked on. There are many opportunities arising at UCF (university of central Florida); postdoc positions, phd openings, and other projects including the smart city bus system for the city of Orlando. Orlando is also home of Disney World, Universal studios and other theme parks which heavily rely on analytics and engineering.

 

 

 

Time in the Modern World

Dr. Demetrios Matsakis

April 3, 2017

 

Abstract

Time has always held a fascination for humanity.  While we allwish we could control it, in today's society there is a practical need to understand and measure it to the nanosecond level and be-low.   I will talk a little about how we used to measure time, but emphasize how we do it now and how we will do it in the near future.   Today our most important critical user of precise time is GPS, and I'll talk about some of the problems, and benefits, Global Navigational Satellite Systems provide. This talk will be the personal opinions of the speaker and the ideas expressed are not necessarily those of his employer or the U.S. government.


Brief Curriculum Vitae

Dr. Demetrios Matsakis is a physicist who went to MIT and U.C. Berkeley, where he studied under the Nobel-prize winning professor who invented the laser, and constructed two special-purpose lasers to study the molecular clouds where stars are born.  After graduating he used radio astronomy to measure the wobbles in the Earth's rotation, by looking at quasars near the edge of the observable universe. Later he became interested in timekeeping with atomic clocks and rapidly spinning neutron stars (pulsars). He went on to manage the Time Service Department of the US Naval Observatory, which uses over 100 atomic clocks to set the time for GPS and much of the world. Under his management, a set of four atomic fountains was designed and built, measuring time to 16 decimal places. This is currently the most precise 24x7 measurement system ever built by mankind to measure any-thing. He is a past president of the International Astronomical Union's Time Commission, has served on many international commissions related to the timekeeping art, represented the U.S. in Geneva.  He holds one patent and published over 140 papers along with one short story that is admittedly pure science fiction.

 

 

 

Trusted Analog /Radio-Frequency Integrated Circuits: A Survey and a Perspective

Yiorgos Makris, Professor of Electrical and Computer Engineering, University of Texas at Dallas

March 29, 2019

 

Abstract

Unlike the extensive research effort that has been expended over the last decade in understanding the threat of hardware Trojans, piracy and counterfeiting of digital Integrated Circuits (ICs), and developing appropriate prevention and detection solutions, the topic remains largely unexplored for their analog/radio-frequency (RF) counterparts. Given the widespread use of analog functionality (i.e., physical interfaces, sensors, actuators, wireless communications, etc.) in most contemporary systems, a comprehensive understanding of the threats in analog/RF ICs is urgently needed, in order to facilitate the development of pertinent solutions. In this presentation, we will summarize and present the available body of knowledge in trusted and secure design of analog/RF ICs, covering both known vulnerabilities and available remedies. Furthermore, we will discuss the limitations of the current state-of-the-art in this topic, highlight the concomitant risks, and suggest research directions and steps to be taken toward designing, fabricating and deploying trusted and secure analog/RF ICs.


Brief Curriculum Vitae

Yiorgos is a professor of Electrical and Computer Engineering at The University of Texas at Dallas, where he leads the Trusted and RELiable Architectures (TRELA) Research Laboratory. Prior to joining UT Dallas in 2011, he spent 10.5 years as a faculty of Electrical Engineering and of Computer Science at Yale University. He holds a Ph.D. (2001) and an M.S. (1997) in Computer Engineering from the University of California, San Diego, and a Diploma of Computer Engineering and Informatics (1995) from the University of Patras, Greece. His main research interests are in the application of machine learning and statistical analysis in the design of trusted and reliable integrated circuits and systems, with particular emphasis in the analog/RF domain. He is also investigating hardware-based malware detection, forensics and reliability methods in modern microprocessors, as well as on-die learning and novel computational modalities using emerging technologies. His research activities have been supported by NSF, ARO, AFRL, SRC, DARPA, Boeing, IBM, LSI, Intel, Advantest, AMS, Qualcomm and TI. Yiorgos served as the 2016-2017 general chair and the 2013-2014 program chair of the IEEE VLSI Test Symposium, as well as the 2010-2012 program chair of the Test Technology Educational Program (TTEP). He serves or has served as an associate editor of the IEEE Transactions on Information Forensics and Security, the IEEE Transactions on Computer-Aided Design of Integrated Circuits and Systems, the IEEE Design & Test periodical and the Springer Journal of Electronic Testing: Theory and Applications, and he has also served as a guest editor for the IEEE Transactions on Computers and the IEEE Transactions on Computer-Aided Design of Integrated Circuits and Systems, and as a topic coordinator and/or program committee member for several IEEE and ACM conferences. He is a Senior Member of the IEEE, a recipient of the 2006 Sheffield Distinguished Teaching Award, a recipient of Best Paper Awards from the 2013 Design Automation and Test in Europe (DATE'13) conference and the 2015 VLSI Test Symposium (VTS'15), as well as a recipient of Best Hardware Demonstration Awards from the 2016 and 2018 Symposia on Hardware Oriented Security and Trust (HOST’16 and HOST’18).

 

 

 

Innovating towards an all-electric future via profitable sustainability

Donald R. Sadoway

October 26, 2018

 

Abstract

Electricity storage is critical to widespread deployment of intermittent renewables, solar and wind, while offering huge benefits to today’s grid, improving security and reducing price volatility. Invented at MIT, the liquid metal battery provides colossal power capability and long service lifetime at very low cost. Round-trip efficiency is greater than 80%. Measurements show retention of 99% of initial storage capacity after 10 years of daily cycling. In parallel, there are lessons more broadly applicable to innovation: how to pose the right question, how to engage young minds (not experts), establishing a creative culture, inventing technology, inventing inventors.


Brief Curriculum Vitae

Donald R. Sadoway is the John F. Elliott Professor of Materials Chemistry in the Department of Materials Science and Engineering at the Massachusetts Institute of Technology. His B.A.Sc. in Engineering Science, M.A.Sc. in Chemical Metallurgy, and Ph.D. in Chemical Metallurgy are all from the University of Toronto. He joined the MIT faculty in 1978. The author of over 170 scientific papers and holder of 29 U.S. patents, his research is directed towards the development of batteries for grid-scale as well as automotive applications and towards environmentally sound technologies for metals extraction. He is the founder of two companies, Ambri and Boston Metal. Online videos of his chemistry lectures hosted by MIT OpenCourseWare extend his impact on engineering education far beyond the lecture hall. Viewed 1,900,000 times, his TED talk is as much about inventing inventors as it is about inventing technology. In 2012 he was named by Time magazine as one of the 100 Most Influential People in the World.

 

 

 

 

From Bluetooth … to 5G

Dr. Sven Mattisson, Ericsson Research, Sweden

October 17, 2017

 

Abstract

The Internet of Everything, or the Networked Society, will require a diverse set of communications means and in particular wireless links with high speed as well as low-rate and low-power radios. The initial development of Bluetooth also addressed the latter and an overview of the Bluetooth radio design ideas is given. Fundamental limits of radio performance parameters, e.g. power consumption and dynamic range, and how they relate to circuit design are reviewed. The presentation closes with an overview of what 5G will bring in terms of requirements and possibilities.
 


Brief Curriculum Vitae

Dr. Sven Mattisson received his PhD in Applied Micro Electronics from Lund University in 1986. From 1987 through 1994 he was an associate professor in Applied Micro Electronics in Lund where his research was focused on circuit simulation and analog ASIC design. In 1995 he joined Ericsson in Lund to work on cellular handset development. Presently he is with Ericsson Research in Lund, where he holds a position as senior expert in analog system design. Since 1996 he is also an adjunct professor at Lund University. Dr. Mattisson is a coinventor of Bluetooth and has been serving as technical program committee member for the International Solid-State Circuits Conference and the European Solid-State Circuits Conference. Presently he is working on 5G radio circuits.

 

 

 

Where am I? An Experiment in Indoor Localization in Harsh environment

K.V.S. Hari

June 16, 2017

 

Abstract

This talk will present the efforts in designing and developing a prototype  for indoor positioning of first responders,  like commandos and firefighters, in harsh environments. The system  assumes no availability of WiFi or GPS and is based on Inertial sensors (accelerometers and gyroscopes). The positions are obtained using data from Inertial measurement units embedded in a shoe, with zero-velocity updates fed to a Kalman Filter. The talk will present the performance of the system which was tested by first responders. The talk will also include a short video on the experiments carried out.
 


Brief Curriculum Vitae

K.V.S. Hari  received the B.E. (1983), M.Tech(1985) and PhD(1990) degrees from Osmania University, IIT Delhi, University of California at San Diego, respectively. Since 1992, he has been a Faculty Member at the Department of ECE, Indian Institute of Science (IISc), Bangalore, where he is currently a Professor and Chair. He has  been an Affiliated Professor in the Department of Signal Processing, KTH-Royal Institute of Technology, Stockholm, Sweden from 2010-2016 and a visiting faculty member at Stanford University, KTH  and Aalto Univ. He also worked at DL Research Lab (1985-87), and at  Research and Training Unit for Navigational Electronics, Hyderabad, India (1991).

His research interests are in developing signal processing algorithms for MIMO wireless communication systems, sparse signal recovery problems, indoor positioning, neuroscience and developing assistive technologies for the elderly. During his work at Stanford University, he worked on MIMO wireless channel modelling and is the co-author of the IEEE 802.16 (WiMAX) standard on wireless channel models for fixed-broadband wireless communication systems. He has been an Editor of EURASIP‘s Journal on Signal Processing from 2006-2016 and Senior Associate Editor of Sadhana - Academy Proceedings in Engineering Sciences, published by Springer from 2013 onwards. He is  a co-founder of the company, ESQUBE Communication Solutions, Bangalore. He is a Fellow of Indian NAE and a Fellow of IEEE.