Symposium 2015

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Symposium 2015


Wednesday, May 27, 2015

7:00 - 2:00 p.m.: Registration

8:00 a.m. - 8:10 a.m.: Welcome and Opening Remarks, Alumni Assembly Hall

Dr. Michael Buehrer, Director of Wireless @ Virginia Tech

Dr. Buehrer Introduces our Keynote Speaker, Dr. Arogyaswami Paulraj

8:10 a.m. - 9:00 a.m.: Keynote Address: Mobile Air Interface Technology – The Past Quarter Century, Dr. Arogyaswami Paulraj

Abstract: With nearly 7 Billion subscribers and the proliferation of smart phones, the impact of mobile wireless technology is both universal and transformative. This talk is a personal perspective of the evolution of mobile air interface technology and the underlying regulatory and commercial factors that shaped it’s evolution. The talk will begin with FDMA, the advent of TDMA, the rise of CDMA and the transition to MIMO-OFDMA. A non-linear story with its share of good and not so good turns.

Bio: Dr. Paulraj is an Emeritus Professor at Stanford University. He graduated with a Ph.D. from the Indian Institute of Technology, New Delhi, India, in 1973. After 25 years with the Indian Navy, Paulraj joined Stanford University in 1992. He proposed the concept of spatial multiplexing / MIMO in 1992. MIMO technology is the key to today’s wireless broadband networks like 4G cellular and WiFi. Paulraj has received several recognitions including the 2011 IEEE Alexander Graham Bell medal and the 2014 Marconi Prize and Fellowship. He is a member of seven national academies including the US National Academy of Engineering.

Powerpoint slides now available!

9:00 AM – 9:05 AM: Dr. Michael Buehrer, Director of Wireless @ Virginia Tech introduces Keynote Speaker, Dr. Jeff Reed

9:05 a.m. - 9:50 a.m.: Keynote Address: The Future of Wireless, Dr. Jeff Reed.

9:50 a.m. 10:00 a.m. Break

Session Chair: Dr. Louis Beex

10:00 a.m. - 10:45 a.m.: Highlighted Invited Poster Session, Main Hall 2nd Floor - The Inn at Virginia Tech

Highlighted Posters:

1.) Distributed RF Sensor Network Implementation Using Software-Defined Radios

Authors: Kareem Bonna, Emmanuel Kanterakis, Wei Su, Troy M. Ryder, and Predrag Spasojevic, Rutgers University

2.) Parametric Study of 3.5 GHz Propagation

Author: Dr. Chris Anderson, Director, Wireless Measurements Group, US Naval Academy

3.) An Extendable Software Defined Radio Hardware Architecture

Author: Jonathan Peck, Lead Systems Engineer, SRC, Inc.

10:45 a.m. - 12 noon: Panel Session: The Future of Wireless,Alumni Assembly Hall

Panel: Dr. John Treichler; Dr. A. Paulraj; Dr. Jeff Reed, Moderator: Dr. Michael Buehrer

12 noon - 1:00 p.m.: Lunch, Latham Ball Room

Lunch Talk: Satellite Communications:   A Brief History, Dr. Timothy Pratt, Emeritus Professor of Electrical and Computer Engineering, Virginia Tech

Abstract: The first communication satellite, Telstar I, was launched in 1962 and demonstrated that television signals could be transmitted over transoceanic distances. Commercial development followed rapidly with the deployment of many geostationary satellites that were initially used for telephony but later carried video signals that now dominate their use. New applications in the 1980s and 1990s included GPS and direct to home television, LEO constellations, and very large surveillance satellites. This talk will highlight some of the technical and social impacts of 50 years of satellite communications.

Bio: Tim Pratt taught courses on satellite communications at Virginia Tech for 33 years, retiring in 2013. He is the co-author with Charles Bostian and Jeremy Allnutt of the text Satellite Communications.

1:00 p.m. - 2:00 p.m.: Invited Position Papers, Alumni Assembly Hall

1:00 p.m. - 1:20 p.m.: Mike Violette, Happy Birthday Broadband Plan

Abstract: A recent auction of spectrum raised $41 Billion for the US Treasury. Now, spectrum is a little like real estate and as Will Rogers once said: "I had been putting what little money I had in Ocean Frontage, for the sole reason that there was only so much of it and no more, “and that they wasn't making any more..." Part of this haymaking for the Feds was initiated by the FCC's "Broadband Plan." In 2010 the FCC released a plan to increase the availability of spectrum for broadband deployment in the United States. Some of the initiatives have had an immediate impact. Others have languished or have been overtaken by events. What has happened is that the Commission has made hundreds of megahertz of spectrum available for all kinds of mobile, IoT and M2M uses. This has caused some opportunities for innovators (and some difficulties for incumbent users). I will provide an update of how the plan is being implemented, and the direction the Commission is taking.

Bio: Michael Violette, President of Washington Laboratories. Mike has twenty five years of experience in FCC, CE, IC testing and certification. Mike is a professional engineer, and an iNARTE Certified EMC Engineer. He currently is on the Board of Directors of ACIL and RABQSA. He has presented numerous live and webinar events on technical, measurement and regulatory requirements for electronic devices. Mike is a Notified Body for the Radio and Telecommunications Terminal Equipment Directive (RTTED) and EMC Directive. Mike Violette brings unique expertise in the area of testing and engineering. He has written a multitude of EMC test plans, conducted a variety of site surveys and tested products, systems and components for industries as diverse as aerospace and architecture. He has expanded WLL’s operation to Asia and co-founded American Certification Body, with operations in the US, EU and Asia, providing certification services to the global market.

1:20 p.m. - 1:40 p.m.: Michael Marcus, CMRS Spectrum, Title: Let’s Focus on Wireless Capacity Requirements Not “Spectrum Requirements”

Abstract: The cellular industry in recently years has been focusing on their “spectrum requirements”, denominated in MHz. But what is really needed is mobile capacity, which results from a combination of 3 factors: spectrum, technology, and infrastructure. While the industry is on track for 500 MHz more below 5 GHz and FCC is likely to make much more (in total bandwidth) available above 24 GHz, large additional increase in “beach front” spectrum ‹ GHz is uncertain. The cellular industry already is the largest spectrum holding industry in this part of the spectrum. While it is conventional wisdom that its needs will grow, there are other potential users for new spectrum. Indeed, when I joined FCC 35 years ago in 1979, many of the current spectrum uses were not anticipated and the Part 90 (private land mobile) industry thought they were the “big boy in town” needing more spectrum.

Recent events have also shown that the national security situation has rapidly evolving threats on the domestic front and the evolving division of spectrum between CMRS and government use should not necessarily not be the same as in other countries. Further, the cellular industry seems to be focusing on “killer apps”-like uses and has little interest in serving the needs of other spectrum users who might give up their spectrum claims if they could get service from CMRS provider.

My thoughts for meeting requirements:

1 – The growth of the infrastructure leg of the tripod is limited, in practice, by local zoning/permitting. Much of this is due to the fact that much current infrastructure has physical design often inappropriate for its environment. The industry should focus more consistently on such physical design issues – not just after they get into a permitting fight with local governments. Cellular infrastructure in residential areas should not look like it was “designed by engineers”.

2 – Cellular industry should see other current and future non-CMRS spectrum users as potential customers. A lot of spectrum is tied up in niche applications that does not use the spectrum very efficiently. Instead of focusing on new uses only on a gross revenue basis, industry should look at how serving other needs via CMRS spectrum would make more raw spectrum available to them.

3 – Have realistic goals for worldwide allocations and standards. There are real benefits to 3GPP multinational deliberations and having equipment that will operate in multiple countries. But in the USA most users don’t go overseas regularly so having every band a worldwide standard is not essential. Having a 300M+ population also means we have a large domestic market that probably will justify novel technologies that many nations’ market would support. Remember when CDMA was made mainly for the US market, but then became a key component of all 3G systems? What is good for 3GPP is not necessarily best for the USA!

Bio: A native of Boston, Michael Marcus was overeducated in EE at MIT. Upon finishing graduate school he served in the USAF where he did research on seismic signals used in underground nuclear test detection at frequencies of 0.1 - 10 Hz. He worked at FCC nearly 25 years and proposed and directed rulemaking that resulted in the spectrum and rules for Wi-Fi and Bluetooth and then the 60, 70, 80 and 90 GHz bands. He is an IEEE Fellow and was awarded the 2013 IEEE ComSoc Award for Public Service in the Field of Telecommunications. He is an adjunct professor at VT ECE.

1:40 p.m. - 2:00 p.m.: Discussion on the position papers

2:00 p.m. - 3:30 p.m.: Tutorial Sessions Begin (3 hours long with a break half way through)

Tutorial Session 1A - DrillField Room

Paul Denisowski, Rohde & Schwarz, Inc., Title: Introduction to Radio Direction Finding Methodologies
Abstract: Radio direction finding (or radiolocation) is used in a wide variety of both civilian as well as government and military applications. In particular, the use of radio direction finding is often an integral component in the resolution of radio frequency interference issues in cellular and other data communication networks, due to the fact that interference cancellation or mitigation techniques used at the receiver are often insufficient for dealing with the wide variety of interference sources and modalities currently experienced by these systems during normal operation. Different direction finding methodologies have been developed over time, each with respective strengths and weaknesses and thus different areas of applicability. This tutorial is intended to provide both a technical and a practical introduction to the main direction finding methodologies currently in use, a comparison of these technologies, and areas of current research / developing for future enhancements to existing radio direction finding methodologies. The specific direction finding methodologies to be covered are as follows:

  • Manual
  • Doppler
  • Watson-Watt
  • Time difference of arrival (TDOA)
  • Angle of arrival
  • Correlative interferometry

For each of the above topics, a general introduction will be followed by a technical discussion of the specific methodology, the type of antennas, receivers, and additional equipment, the most applicable areas of use, and real-world examples of where the methodology is deployed. As an example, the section of Doppler DF will include a refresher on Doppler shift, the concept of (virtual) antenna rotation and the Doppler sine wave, the use of 4- and 8- antenna arrays, processing and display of received frequency information, and the current use of Doppler DF in production systems (such as Lojack receivers). Similar information will be presented for each of the other technologies.

Bio: Paul Denisowski is an Applications Engineer at Rohde & Schwarz, one of the world’s leaders in RF test and measurement and direction-finding instrumentation for over 80 years, where he specializes in interference hunting and direction-finding methodologies for cellular network operators and military / government customers. In addition having done extensive field work in these areas, he has authored numerous whitepapers, has presented extensively at both industry (VzW IBTUF, SCTE Expo, etc.) and government (DOE, MITRE, etc.) conferences and forums, and regularly develops and delivers technical webinars (RCR Wireless, Fierce Wireless, etc.). Paul holds a Master’s Degree in Electrical Engineering from North Carolina State University and was a visiting lecturer at the Tokyo Institute of Technology under a joint fellowship from the US National Science Foundation and the Japanese Ministry of Education (Monbusho).

Power Point Slides Now Available!


Tutorial Session 1B - Duck Pond Room

Dr. Majid Manteghi, Virginia Tech, Title: Small Antennas: Theoretical Basis and Practical Techniques

Abstract: Although a 70-meter diameter parabolic radio telescope looks much more impressive than a one-twentieth wavelength small antenna for implanted applications, the theory involved with a small antenna might be much more challenging than the required electromagnetics knowledge for designing a radio telescope.

This presentation will give a brief theoretical background on small antennas and also will cover some of the basic techniques to design and use small antennas. Some of the popular designs will be investigated and their pros and cons will be addressed based on the theories presented in the first part. Then, the low frequency short distance wireless channel will be presented and some of the major differences between calculating the link budget for a low frequency link and a conventional radio frequency link will be studied.

Bio: Majid Manteghi received his BS and MS degrees from the University of Tehran, Tehran, Iran, in 1994 and 1997, respectively. From 1997 to 2000, Majid worked in the telecommunication industry in Tehran, where he served as the head of an RF group for a GSM base transceiver station project. In the fall of 2000, he joined the Antenna Research, Analysis, and Measurement Laboratory (ARAM) of the University of California, Los Angeles. He continued his education in electrical engineering and received a PhD degree from the University of California, Los Angeles, in 2005. His research areas have included ultra-wideband (UWB) impulse-radiating antennas (IRAs), phased-array design, miniaturized patch antennas, multi-port antennas, dual-frequency dual-polarized stacked-patch array designs, mobile TV antennas, RFID circuits and systems, and miniaturized multi-band antennas for MIMO applications. Dr. Manteghi was a research engineer and lecturer with the Electrical Engineering Department of UCLA until spring 2007, while collaborating with Mojix Inc. as a research scientist. Professor Manteghi has been in the Bradley Department of Electrical and Computer Engineering at Virginia Tech and a faculty member of the Virginia Tech Antenna Group (VTAG) since fall 2007

Tutorial Session 1C - Smithfield Room

Mike Violette, Washington Labs, Title: A Tutorial on Compliance: Regulatory Requirements for Wireless Systems

Abstract: Every year, twenty thousand radio devices are approved for sale in the United States in the past year under the Federal Communications Commission (FCC) equipment authorization system. This number grows at a rate of 10% per year. The products range in use from low power remote control devices to high speed WiFi and data communications devices to vehicle radar systems. The frequency range of operation of these devices ranged from a few hundred kilohertz to tens of gigahertz, power levels from milliwatts to kilowatts. The expansion of the wireless market can be marked by the growth in the number of certification of wireless devices (just over 2000 devices were approved fifteen years ago). To reach these markets, wireless system designers and operators must understand regulatory schemes to receive proper authorization. The FCC Rules and Regulations cover technical and administrative requirements for sale and marketing of all RF devices. Measurement and filing procedures must be followed to gain equipment authorization for any device that transmits radio frequency energy. These requirements are specific to the use, frequency, power, spurious emissions, occupied bandwidth and tolerances. The evolution of the rule-making process critically affects the adoption of new applications of technology. This tutorial will provide an overview of the FCC’s Rules and Regulations governing radio device operation in the United States with specific focus on the following:

  1. Regulatory Overview
    1.Licensed and Unlicensed Operation
    2.Structure of FCC Rules
  2. Technical Requirements
    3.Occupied Bandwidth
    4.RF Exposure
  3. General Measurements
    1.Laboratory procedures
    2.ANSI C63 Standards
  4. Compliance Procedures
    1.Equipment authorization types
    2.Filing procedures
    3.Typical costs

The focus of the presentation will be on the practical application of the FCC system, which is critical for getting products that the market can use. The FCC has an open system under their Equipment Authorization Branch, which, in addition to giving access to regulatory information is a trove of technical data on existing devices, operating frequencies and test data.

This tutorial is designed to emphasize practical techniques, based on experience gained with thousands of equipment tests and approvals.

Finally, a brief discussion of the role of international standards will be provided, with overview of the compliance regimens in Canada, the European Union and select countries in Asia and in the developing world, critical information when designing products for the global marketplace. Attendees will receive an electronic copy of the presentation slides.

Bio: Michael Violette, President of Washington Laboratories. Mike has twenty five years of experience in FCC, CE, IC testing and certification. Mike is a professional engineer, and an iNARTE Certified EMC Engineer. He currently is on the Board of Directors of ACIL and RABQSA. He has presented numerous live and webinar events on technical, measurement and regulatory requirements for electronic devices. Mike is a Notified Body for the Radio and Telecommunications Terminal Equipment Directive (RTTED) and EMC Directive. Mike Violette brings unique expertise in the area of testing and engineering. He has written a multitude of EMC test plans, conducted a variety of site surveys and tested products, systems and components for industries as diverse as aerospace and architecture. He has expanded WLL’s operation to Asia and co-founded American Certification Body, with operations in the US, EU and Asia, providing certification services to the global market.

Power Point Slides Now Available!


3:30 p.m. - 4:00 p.m.: Refreshment Break/Virginia Tech Student Poster Session – Cascades Room

4:00 p.m. - 5:30 p.m.: Conclusion of Tutorial Sessions 1A, 2A, and 3A

4:00 p.m. - 6:30 p.m.: Industrial Affiliates Official Board Meeting and Dinner (Lavery Hall/Turner Place)

Thursday, May 28, 2015


7:00 a.m. - 9:00 a.m.: Registration

8:00 a.m. - 8:05 a.m.: Dr. Jeffrey Reed Introduces our Keynote Speaker, Dr. Preston Marshall, Google, Location: Alumni Assembly Hall

8:05 a.m. - 8:50 a.m.: Keynote Address: Momentum Beyond 3.5 GHz: Shared Bands, New Spectrum Opportunities, and the Democratization of LTE, Dr. Preston Marshall, Google

Power Point Slides Now Available!

Abstract: The US Federal Communications Commission (FCC) has recently approved the worlds most expansive spectrum sharing regime, providing sharing not only between military and civil users, but also between traditional exclusive uses, and traditional unlicensed uses. Not only did this provide an unprecedented change in spectrum policy, but it is enabling of new opportunities in wireless services and business models, technologies, and architectures. These arise from a band that will be shared between traditional wireless services, and more localized, premises-focused services that formerly could only utilize WiFi and traditional unlicensed technologies. A common equipment and technology ecosystem that provides potentially high equipment volume to drive down carrier equipment costs, and the availability of carrier-grade equipment in widely accessible spectrum bands will provide new opportunities for both carrier and traditionally unlicensed communities. While the carrier community has made great use of traditional unlicensed technologies; this shared spectrum will create the opportunity for enterprises, MVNO's, and individuals to adopt the same technologies as in use in carrier systems; effectively democratizing the LTE ecosystem. The current partitioning between licensed and unlicensed technologies will no longer be driven by spectrum availability, and will become market driven instead. This talk will explore the impact of these new spectrum sharing policies, and will discuss technology and other enablers to fully realize these opportunities, and the potential impact on creating wireless abundance.

Bio: Dr. Preston F. Marshall is Principal Wireless Architect in Google Access. He has led Google's effort in 3.5 GHz spectrum policy, and is the Project Manager for Google's Spectrum Access System. He is co-founder, and cochair of the Wireless Innovation Forum (WinnForum) 3.5 GHz multi-stakeholder group, which is developing interface standards and industry-wide practices for 3,5 GHz deployment. He is active in research and development of evolving networking concepts, wireless, cognitive radio and networking technologies, and supporting spectrum policy and technology. He has been heavily involved in wireless technology and policy, including participation in the 2012 PCAST Spectrum Study, serving as the technical witness during the US House hearings on the PCAST recommendations. Before joining Google, he was Deputy Director of the Information Sciences Institute (ISI) of University of Southern California, and a Research Professor at USC’s in Electrical Engineering. For seven years, he was Program Manager with the Defense Advanced Research Projects Agency (DARPA) for many of the DARPA Wireless, Cognitive Radio, and networking programs. Dr. Marshall has written numerous articles, books and chapters on the subject of cognitive radio and spectrum issues. He is author of “Quantitative Analysis of Cognitive Radio and Network Performance” (2010) by ARTECH House and the recently released “Scalability, Density, Decision-Making in Cognitive Wireless Networks” (2013) by Cambridge University Press.

8:50 a.m. - 9:30 a.m.: Demo - Developing a Dynamic Spectrum Access System for Next Generation Public Safety Radios, Dr. Jeffrey Reed

9:30 a.m. - 10:30 a.m.: Tutorial Sessions 2A, 2B, and 2C begin 2 hours and 40 minutes long with a break half way through)

Tutorials Session 2A - DrillField Room

Martin Braun & Jonathon Pendlum, Ettus Research, Title: SDR Architecture and RF Network-on-Chip

Abstract: When developing software defined radio (SDR) platforms, the process is very different when the target is a general purpose processor (GPP) versus a FPGA based design. On GPP platforms, there are many powerful SDR suites, such as GNU Radio (GR), that provide a modular stream based processing infrastructure that allow the developer to focus on algorithm development. In these GPP SDR suites, the user is generally not required to be an expert in the low level infrastructure. Conversely, most FPGA platforms are monolithic implementations that require the user to be an expert in both their algorithm and the intimate details of the FPGA design’s infrastructure. Furthermore, the FPGA platforms lack the GPP based SDR suite’s ability to easily add, rearrange, and reconfigure processing blocks.

However, FPGAs have tremendous parallel processing capability and can accelerate many SDR related algorithms. An ideal platform would allow heterogeneous processing with the GPP and FPGA while retaining the ease of design and flexibility of GPP based SDR. RF Network-on-Chip (RFNoC) is our implementation of such a platform. RFNoC is a new architecture for Ettus Research third generation USRP devices that aims to make FPGA acceleration in SDR more easily accessible.

RFNoC implements a packetized network infrastructure in the USRP’s FPGA that handles the transport of control and sample data between the GPP and radio. Users implement their custom algorithms in FPGA based processing blocks, or Computation Engines (CEs), that attach to this network. CEs act as independent nodes on the network that can receive from and transmit data to any other node (such as another CE, radio block, or GPP.) This architecture permits scalable designs that can distribute processing across many nodes. Users can create modular, FPGA accelerated SDR applications by chaining CEs into a flow graph in a fashion similar to many GPP SDR suites. One such suite, GNU Radio, fully supports RFNoC. Users can create flow graphs containing both GR blocks and RFNoC CEs that seamlessly communicate. CE parameters, such as FFT size and FIR filter coefficients, can be set from within GNU Radio like any other GR block. By simplifying access to the FPGA, the same hardware can be more easily used for more demanding applications, thereby increasing the range of applications. We will present an in depth tutorial on RFNoC including a discussion on its design and capabilities, demos of several existing examples, instructions on implementing CEs in RFNoC, and finally integrating those CEs into GNU Radio.

Bios: Jonathon Pendlum: Jonathon Pendlum earned his bachelor’s degree in Electrical Engineering from Purdue University in 2008 and master's degree in Computer Engineering from Northeastern University in 2014. While at Northeastern, he was a research assistant in the Re configurable Computing Laboratory where he studied methods to accelerate Cognitive Radio with Heterogeneous Computing. Since graduating, Jonathon has joined Ettus Research as a research and development engineer working on FPGA acceleration architectures for Software Defined Radio.

Bios: Martin Braun: Martin Braun is a wireless communications engineer with several years of experience in both academia and industry. He learned the ropes at the Karlsruhe Institute of Technology's Communications Engineering Lab (CEL), where he worked on SDR, radar, and signal processing, earning him a PhD. Since 2014, Martin is with Ettus Research, working on new SDR technologies. Martin has been an active member of the GNU Radio community since 2008 and a member of the IEEE since 2007.

Tutorial Session 2B - Duck Pond Room

Vireshwar Kumar, Virginia Tech Ph.D. candidate, Title: Securing Your Wireless Devices: Fundamental Principles and Enabling Technologies

Abstract: This tutorial provides an overview of the fundamental security principles, mechanisms, and threats relevant to wireless networks. The tutorial will include discussions on important cryptosystems and protocols; IEEE 802.11i; security in cellular networks; and security issues in cognitive radio networks and dynamic spectrum sharing.

Bio: Jerry Park received a Ph.D. degree in electrical and computer engineering from Purdue University in 2003. He is currently an associate professor in the Department of Electrical and Computer Engineering at Virginia Tech, and the Site Director of a National Science Foundation (NSF) Industry-University Cooperative Research Center (I-UCRC) called Broadband Wireless Access & Applications Center (BWAC). As the site director of BWAC at Virginia Tech, Park is leading several sponsored research projects on wireless networks and network security.

Dr. Park is widely recognized for his pioneering work on enforcement and security problems in cognitive radio networks and spectrum sharing. He is a recipient of a 2014 Virginia Tech College of Engineering Faculty Fellow Award, a 2008 NSF Faculty Early Career Development (CAREER) Award, a 2008 Hoeber Excellence in Research Award, and a 1998 AT&T Leadership Award. He is a senior member of the IEEE and the ACM.

Bio: Vireshwar Kumar received his Bachelor's degree in Electrical Engineering from Indian Institute of Technology (IIT) Delhi, India in 2009. He has worked with Dar-Al-Handasah as an electrical engineer before moving to Indian Institute of Science (IISc), Bangalore, India in 2010 as a project assistant. He has been a Ph.D. student in the Bradley Department of Electrical and Computer Engineering at Virginia Tech since 2011. Vireshwar's research interests include security issues in wireless networks, specifically, cognitive radio networks. In his recent work, he has developed ex-post approaches for spectrum security and enforcement in spectrum sharing environment.

Power Point Slides Now Available!


Tutorial Session 2C - Smithfield Room

Dr. Walid Saad, Virginia Tech, Title: Game Theory for Emerging Communication Networks: Challenges and Opportunities

Abstract: Next-generation wireless systems are characterized by three key features: heterogeneity, in terms of technology and services, dynamics, in terms of rapidly varying environments and uncertainty, and size, in terms of number of users, nodes, and services. The need for smart, secure, and autonomic network designs has become a central research issue in a variety of applications and scenarios. One example is next-generation heterogeneous wireless small cell networks in which a myriad of devices must be able to interact, coexist, meet stringent QoS requirements, and self-adapt to uncertainties and time-varying environments. Another example is cognitive radio networks, which are envisioned as a large-scale wireless system with multiple stakeholders that must interact, operate, and control wireless operations such as spectrum sharing, at both technical and economic levels. Incorporating self-organizing capabilities along with smarter security solutions in heterogeneous wireless systems motivates the development of innovative analytical techniques. In this respect, game theory and learning are expected to play a critical role towards deploying intelligent, distributed, and flexible networked systems in which devices can make independent and rational strategic decisions, smartly adapting to their environment.

To this end, this tutorial will focus on the confluence of seemingly disparate disciplines: game theory, economics, learning, and networking; while presenting the state of the art in this interdisciplinary area. In particular, this tutorial will provide a comprehensive introduction to game theory in its two branches: non-cooperative and cooperative games, as it applies to the design of future networks. We will also discuss new emerging types of games such as matching theory. For each type of games, we present the fundamental components, introduce the key properties, mathematical techniques, solution concepts, and we describe the challenges and methods for applying these games in a number of emerging areas in communication networks. The tutorial concludes by shedding light on future opportunities and challenges in this area.

Bio: Walid Saad received his B.E. degree in Computer and Communications Engineering from the Lebanese University, in 2004, his M.E. in Computer and Communications Engineering from the American University of Beirut (AUB) in 2007, and his Ph.D degree from the University of Oslo in 2010. Currently, he is an Assistant Professor at the Bradley Department of Electrical and Computer Engineering at Virginia Tech, where he leads the Network Science, Wireless, and Security (NetSciWiS) laboratory, within the Wireless@VT research group. Prior to joining VT, he was a faculty at the Electrical and Computer Engineering Department at the University of Miami and he has held several research positions at institutions such as Princeton University and the University of Illinois at Urbana-Champaign. His research interests include wireless and small cell networks, game theory, cybersecurity, smart grid, network science, cognitive radio, and self-organizing networks. He has published one textbook and over 100 papers in these areas. Dr. Saad is the recipient of the NSF CAREER award in 2013. He was the author/co-author of three conference best paper awards at WiOpt in 2009, ICIMP in 2010, and IEEE WCNC in 2012. He currently serves as an editor for the IEEE Transactions on Communications and the IEEE Communication Tutorials & Surveys.

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  10:30 a.m. - 10:50 a.m.: Refreshment Break/Virginia Tech Student Poster Session

10:50 a.m. - 12:30 p.m.: Tutorial Sessions 2A, 2B, 2C conclude

12:30 p.m. - 1:30 p.m.: Lunch, Latham Ball Room

Lunch Talk: Wireless at VT and Beyond:  Perspectives on the Past and the Future, Dr. Brian Woerner

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Abstract: This talk will discuss how wireless technology as grown and evolved over the past 25 years, as well as what lays ahead, with an emphasis on the important role played by Virginia Tech in the development of the wireless field.

Bio: Brian D. Woerner is the Lane Professor and Chair of the Lane Department of Computer Science & Electrical Engineering at West Virginia University, a position he has held since 2004. From 1991 through 2004 he was a faculty member in the Bradley Department of Computer & Electrical Engineering at Virginia Tech, where he taught conducted research in the field of wireless communications with the Mobile & Portable Radio Research Group (MPRG), a forerunner of Wireless@VT. He served as director of the MPRG from 1994-96, and again from 1998-2000. He received his B.S. in Computer & Electrical Engineering from Purdue University in 1986, and his Ph.D. in Electrical Engineering Systems from the University of Michigan in 1991.

1:30 p.m. -2:30 p.m. Panel Session: How to Make Money With Spectrum SharingPanel: Dr. Jeffrey Reed, Virginia Tech; Dr. Preston Marshall, Google, David Gurney, Motorola, and Milind Buddhikot , Alcatel - Lucent Bell Labs

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Bios: Dr. Jeffrey Reed, Willis G. Worcester Professor Dr. Jeffrey H. Reed is the Willis G. Worcester Professor in the Bradley Department of Electrical and Computer Engineering. He currently serves as Founder of Wireless @ Virginia Tech, one of the largest and most comprehensive university wireless research groups in the US and is the Founding Faculty Member of the Ted and Karyn Hume Center for National Security and Technology. Since joining Virginia Tech in 1992, Dr. Reed has been PI or co-PI of approximately 100 projects covering areas such as software radio, cognitive radio, ultra wideband, and channel modeling. He is cofounder of CRT Wireless, a company that is developing cognitive radio techniques for commercial and military systems, and Power Fingerprinting, a company focused on embedded device security. Dr. Reed has served on panels, coordinated numerous workshops & conferences, and served on advisory groups for the Department of Commerce, DoD, State of Virginia, and NSF as well as technical advisory boards for many companies. Recently he served as associate editor for the Proceedings of the IEEE issues on cognitive radio. Dr. Reed is a Fellow of the IEEE for contributions to software radio and communications signal processing and for leadership in engineering education and is a past recipient o the College of Engineering Award for Excellence in Research. He is the author of three books and over 200 journal and conference papers. Dr. Reed has two new books scheduled for publication in 2012 in the areas of cellular communications and software defined and cognitive radio. Dr. Reed received his BS, MS, and PhD degrees from the University of California, Davis.

Bio: Milind M. Buddhikot is currently a Distinguished Member of Technical Staff (DMTS) in Alcatel-Lucent Bell Laboratories, where he conducts research in next generation of wireless networks.   In a research career spanning 22+ years, he has made significant contributions, scientifically as well as to the business aspects of wireless, IP and multi-media networking.

Milind’s recent work is in the area of high capacity wireless networks, in particular small cells that exploit shared spectrum via dynamic spectrum access (DSA) technologies.  He has authored 45+ technical papers and holds 15 US or international patents. According to Google Scholar, Milind’s research publications have recorded 5000+ citations and are well recognized within the research community.  Two concepts he pioneered and researched, namely the concept of database coordinated dynamic spectrum access (2004) and ultra-broadband small cells using shared spectrum (2009) have now emerged as promising new technology and spectrum policy directions.

Milind is a recipient of the Bell Labs President's Silver Award for outstanding innovations and contributions (2003), Bell Labs Team Award (2003), Lucent Chairman's Team Award (2006) and DMTS award (2012). Milind is a co-founder of the IEEE DySPAN symposium which has emerged as a premier conference on the topic of Dynamic Spectrum Access. He has served as an Associate Editor of IEEE/ACM Transactions on Networking and Elsevier’s Computer Networks Journal, secured 1.2+ million dollars in research funding and regularly participates in FCC, NSF and conference panels and TPC committees of major IEEE and ACM conferences. Milind has frequently delivered invited presentations and tutorials on future technology directions to audiences in top-tier research forums and trade shows and to business customers world-wide.

More details on Milind’s research can be found at For his contributions to Bell Labs and Alcatel-Lucent, Milind has received the Distinguished Member of Technical Staff (2012) award, Lucent Chairman Award (2006) and Bell Labs President's Innovation Award (2003). Milind is also a co-founder of a premier IEEE conference (IEEE DySPAN) and has served on editorial boards of IEEE/ACM Journal of Networking and Elsevier's Computer Networks Journal.

Bio: David Gurney, MSEE, Master Innovator, Motorola Solutions Bio: Dave Gurney is a Distinguished Member of the Technical Staff in the CTO organization at Motorola Solutions in Schaumburg, IL. In his 25 year career at Motorola, he has worked on numerous communications systems, including US and Japan Digital Cellular, IS-95 CDMA, Wimax, LTE, cable and P25 LMR systems. He has also worked extensively on Cognitive Radio, TV white space, geo-location databases, RFID, and Fiber-to-the-Home technologies. He holds a BSEE degree from the University of Illinois, and a MSEE degree from NTU. He currently holds 35 patents, and is recognized as a Master Innovator at Motorola Solutions.

2:30 p.m. - 4:00 p.m. Tutorial Sessions 3A, 3B, and 3C begin (2 hours and 40 minutes long with a break halfway through.

Tutorial Session 3A - Drillfield Room

Dr. Ismail Guvenc, Associate Professor, Florida International University, Title: Road Towards 5G Broadband - A Review of LTE, LTE-Advanced and Heterogeneous Wireless Network Technologies

Abstract: With the recent worldwide activity on the 5G wireless systems, it becomes more important than ever for wireless engineers and researchers to understand the basic building blocks of 4G wireless technologies, in order to better develop the next generation wireless networks. This tutorial aims to provide a basic background on the fundamentals of 4G and 5G wireless systems in two separate parts. The first half will be a crush-course on LTE and LTE-Advanced systems, which will be condensed from the graduate course that the speaker is teaching at FIU. In particular, frame structure, synchronization signals, MIMO techniques, link adaptation, scheduling issues, and practical deployment aspects of LTE systems will be highlighted. The second half of the tutorial will discuss about the challenges and component technologies for 5G wireless systems. In particular, we will overview mobility management, spectral efficiency, and energy efficiency aspects of 5G small cell networks.

Bio: Dr. Ismail Guvenc (senior member, IEEE) received his Ph.D. degree in electrical engineering from University of South Florida in 2006, with an outstanding dissertation award. He was with Mitsubishi Electric Research Labs during 2005, and with DOCOMO Innovations Inc. between 2006-2012, working as a research engineer. Since August 2012, he has been an assistant professor with Florida International University. His recent research interests include heterogeneous wireless networks and future radio access beyond 4G wireless systems. He has published more than 100 conference/journal papers and book chapters, and several standardization contributions. He co-authored/co-edited three books for Cambridge University Press, is an editor for IEEE Wireless Communications Letters, and was a guest editor for four special issue journals/magazines on heterogeneous networks. Dr. Guvenc is an inventor/coinventor in 23 U.S. patents, and has another 4 pending U.S. patent applications. He is a recipient of the 2014 Ralph E. Powe Junior Faculty Enhancement Award and 2015 NSF CAREER Award.

For Power Point Slides of Dr. Guvenc's Presentation, Please Email Him Directly.

Tutorial 3B - Duck Pond Room

Tom Rondeau and Philip Balister, Title: Working with Open Source Software for Wireless System Development

Abstract:  Software development in areas as wide ranging as low-level systems programming, embedded systems development, baseband processing, research and development, and all the way up to mobile apps development are increasingly relying on and using free and open source software (FOSS). With all of its appeal, many traditional software development shops are unfamiliar with the power and capabilities as well as the availability and breadth of the FOSS world. In this tutorial, a panel of experts in wireless communications and open source software will present topics to address many of the questions surrounding the use and inclusion of free software in development models. The topics of the tutorial include exposure to many of the different FOSS projects we use in our daily development work. These include tools for embedded systems development, scientific computing and analysis, software radio development and wireless signal exploration, and even machine learning. We will present a number of examples and uses of FOSS tools to expose both what is available as well as some introductory-level knowledge of how to work with these tools. Part of the problem with using FOSS projects is due to an unfamiliarity with the model of development, community organization, and knowledge of how to choose the right tool to use for a problem. Throughout our discussion, we will highlight many of these issues. A key to success is understanding not only the tools that are available but how to interact with FOSS developers and communities to make the most of a tool. We will go over issues about development models with open source software and provide insights in how interaction and giving back, code and knowledge, provides increased returns from the community in help and responsiveness. This issue directly leads to companies approaching how to open source their own code and what it will take to make that a successful transition.

Among all of this, the panel will present industry experts in the software radio field who support and use FOSS projects in many of their efforts. This perspective will help illuminate discussions about how to use free software and how industrial applications benefit from these projects.

This is a beginner level survey tutorial to cover many aspects of FOSS for wireless and, specifically, software radio development. We will balance discussions of the social aspects of working with these projects with the technical development tools we use often in developing software radio.

Bio: Thomas Rondeau main interest is in developing better communications capabilities. With a balance of academic work as a visiting researcher with the University of Pennsylvania and private consulting work through his firm Rondeau Research, Tom has found free and open source software to be about the best mix both worlds. In his role as maintainer and project lead of GNU Radio, he gets to both develop, explore, and educate new ways to process, observe, and think about signals and electromagnetic waves. When not developing in these areas, Tom enjoys reading and researching the history of science with an emphasis on the development of radio. He lives in Vermont with his many cats.


Tutorial 3C - Smithfield Room

Dr. Matthew Valenti, West Virginia University, Title: Centralized Radio Access Networks: The Case for Broadband in the Cloud

Abstract: The consequence of the current trend towards densification is an explosion in the number of deployed cellular base stations and picocells. While economies of scale will drive down equipment prices to some degree, future networks will make increasing use of advanced signal processing algorithms with costly computational requirements. Similar to distributed antenna systems (DAS), which connect remote radio heads to baseband processing assets by way of a fronthaul, much of the computational burden can be shifted from the point of reception to a central processing center. Such centralized radio access networks (C-RANs) can leverage advances in cloud computing, virtualization, and open IT platforms, making baseband processing a commodity. For C-RAN systems, the additional costs and delays imposed by the fronthaul is a concern, so the benefits of centralized processing must offset these factors while maintaining a high quality of experience for the user. New concepts are required for the design, operation, and optimization of centrally processed radio access networks, fronthaul networks, operations and management algorithms, and architectural elements.

This tutorial provides an overview of the state in the art of C-RAN, considers the economic and technical feasibility of such architectures, and explores future research directions in this topic. It begins with an overview of the C-RAN system architecture, which is illustrated by a simple case study involving the central processing of the LTE uplink. The trend towards densification is reviewed, with an emphasis on the role of interference. Next, a slightly more theoretical treatment of the computational requirements associated with central processing is provided, which gives some insight into how to properly size and locate the computing center. The role of the fronthaul is considered, with an emphasis on compression techniques. New approaches for scheduling in a C-RAN are proposed, which take into account the constraints of the fronthaul and the centralized processing assets. Novel uses of C-RAN architectures are covered, including techniques to selectively shut down radio heads during off-peak hours and the use of collaborative/distributed processing techniques, such as network-MIMO, enhanced inter-cell interference coordination (eICIC) and interference alignment. An economic analysis is provided, balancing the costs of the fronthaul, base stations, and computing centers.

Bio: Matthew Valenti is a Professor in the Lane Department of Computer Science and Electrical Engineering at West Virginia University. Dr. Valenti's research and teaching interests are in the areas of communication theory and statistical signal processing. He received B.S. and Ph.D. degrees from Virginia Tech and an M.S. from Johns Hopkins. He previously worked as an Electronics Engineer at the U.S. Naval Research Laboratory. Upon joining WVU in 1999, he founded the Wireless Communications Research Lab. Dr. Valenti is registered as a Professional Engineer (P.E.) in the state of West Virginia.


4:00 p.m. - 4:20 p.m.: Refreshment break/Virginia Tech Student Poster Session

4:20 p.m. - 5:40 p.m.: Tutorial Sessions 3A 3B, and 3C conclude

6:00 - 9:00 p.m.: Wireless @ VT Dinner Party, The Bowman Room, 165 Spring Road Blacksburg, VA

Friday: May 29, 2015

8:00 a.m. - 8:05 a.m.: Dr. Louis Beex Introduces Keynote Speaker: Dr. John R. Treichler, Alumni Assembly Hall

8:05a.m. - 8:50 a.m.: Keynote Address: Four Ways of Going Out of Business --- All Performed by the Same Small Company, Dr. John R. Treichler, Raytheon Applied Signal Technology

Power Point Slides Now Available!


Abstract: This talk examines the ups and downs of a small company which, almost miraculously, stayed in business and even grew significantly over a period of thirty years -- an interval long enough to explore a number of ways to enter and then barely escape financial peril. The audience can save itself two years in business school by coming to this 50-minute presentation.

Bio: John Treichler received his BA and MEE degrees from Rice University, Houston, TX in 1970 and his PhDEE from Stanford in 1977. He served as a line officer aboard destroyers in the US Navy from 1970 to 1974. In 1977 he joined ARGOSystems in Sunnyvale CA and then helped found Applied Signal Technology, Inc. in 1984 after serving for a year as an Associate Professor of Electrical Engineering at Cornell University. Applied Signal Technology, now a mission area within the Space and Airborne Systems (SAS) business unit of Raytheon, Inc, designs and builds advanced signal processing equipment used by the United States government and its allies for foreign intelligence collection. He is currently the president of the Raytheon Applied Signal Technology business unit. He was elected a Fellow in the Institute of Electrical and Electronics Engineers (IEEE) in 1991 and was awarded the IEEE Signal Processing Society’s Technical Achievement Award in 2000. He recently completed a three-year tour as the IEEE Signal Processing Society’s Vice President for Membership and Awards.

9:00 a.m. - 10:30 a.m.: Tutorial Sessions 4A and 4B and 4C begin (3 hours long with a break halfway through.)


Tutorial Session 4A - Drillfield Room

Dr. Carl Dietrich, Virginia Tech, Title: An Introduction to SDR Development With REDHAWK

This session will provide an introduction to the REDHAWK SDR framework and toolset. Topics will include SDR in general, the SCA, and the hardware and software involved with SDR. Participants will put together a waveform using prebuilt components that come with REDHAWK, along with designing and creating a component of their own. Attendees will need to download a virtual machine and the tutorial exercises before class! Instructions will be uploaded here soon.

Bio: Carl B. Dietrich is a Research Associate Professor in the Bradley Department of Electrical and Computer Engineering at Virginia Tech and is also a partner in Software Defined Radio Solutions, LLC. His research interests include cognitive radio, software defined radio, multi-antenna systems, and radio wave propagation. From 2005-2012 Dr. Dietrich led the OSSIE open source software defined radio (SDR) project, and he was also involved in an NSF REU site in Cognitive Communication from 2009-2014, directing the site in 2013 and 2014. Dr. Dietrich has also authored or coauthored papers on antenna diversity and distributed antenna systems, near-ground and low-altitude, air-to-ground radio-wave propagation, wireless distributed computing, and SDR. He has developed and taught semester and short courses on SDR related topics for Virginia Tech and Software Defined Radio Solutions, LLC. He obtained Ph.D. and M.S. degrees in Electrical Engineering from Virginia Tech, Blacksburg, VA, and a B.S. in Electrical Engineering from Texas A&M University, College Station, TX. He chaired the Wireless Innovation Forum’s Educational Special Interest Group from 2008-2013, is a member of IEEE, ASEE, and Eta Kappa Nu, and is a licensed professional engineer in Virginia.


Dr. Greg Durgin, Georgia Tech, Title: Wireless Forever: Engineering the Radios That Never Plug In


This tutorial surveys the state-of-the art in RFID, energy-harvesting sensors, and devices for the Internet of Things.  Everything you know about wireless communications will be challenged, as we discuss ultra-low energy RF devices, bizarre forms of modulation, ``smart’’ antennas that do not require power, and undulating waveforms that extend the physical limits RF energy-harvesting.  We present the engineering breakthroughs of today that will lead to real Sci-Fi applications of tomorrow:  peel-and-stick radio sensors that last forever, mm-scale wireless location capability, and devices that can exchange information over kilometer-scale distances without actively transmitting radio waves.  This tutorial will be informative for practicing engineers, technologists, and students.

Bio: Bio: Greg Durgin joined the faculty of Georgia Tech's School of Electrical and Computer Engineering in Fall 2003. He received the BSEE (96), MSEE (98), and PhD (00) degrees from Virginia Polytechnic Institute and State University. In 2001 he was awarded the Japanese Society for the Promotion of Science (JSPS) Post-doctoral Fellow and spent one year as a visiting researcher at Morinaga Laboratory in Osaka University. In 1998 he received the Stephen O. Rice prize (with coauthors Theodore S. Rappaport and Hao Xu) for best original journal article in the IEEE Transactions on Communications. Professor Durgin also authored Space-Time Wireless Channels, the first textbook in the field of space-time channel modeling. Prof. Durgin serves on the IEEE Wave Propagation Standards Committee. He has won several teaching awards as well as the National Science Foundation CAREER research award.


Dr. fred harris, San Diego State University, Title: Ins and Outs of Channelization

Signals are launched, collected, and processed to interrogate, to detect and to extract their information content in every conceivable operational scenario and environment. Digital Signal processing is performed to extract signals of interest while suppressing other signals such as noise, interference, and jammers. The primary signal processing tools applied to these tasks are high performance reconfigurable spectrum channelizers and rapid high dynamic range spectrum analyzers. Channelizers can be applied to various signal generation as well as to signal collection applications. Multirate signal processing techniques offer the most cost effective options to implement wide bandwidth channelizers.

Recent developments in channelizer structures now offer rather impressive desirable channelizer capabilities not previously available to system designers. These options include multiple simultaneous channels with arbitrary bandwidths and arbitrary center frequencies. This tutorial will include material that motivates the use of multirate signal processing and illustrate the unique capabilities of their application. The presentation will be light on mathematics and will emphasize understanding and intuition of the material. We will include many MATLAB demonstrations to illustrate concepts and capabilities. Participants will be guided through the gamut of traditional channel structures through the sequence of design options that convert the standard channelizers into truly remarkable and capable versions. Presentation side trips and emphasis will be responsive to attendee interests and questions: be prepared to ask good questions!

The (intermediate) level of this tutorial is appropriate for Masters and PhD students, researchers with a background in signal processing and digital communications, as well as professionals interested in modern antenna systems and associated signal processing.

Tutorial Outline (more or less):

Motivation for and Evolution of Polyphase Filter Banks: Evolution of receiver structures, Amstrong’s Heterodyne structure, Digital version of Armstrong Structure, Digital Down Converter, interchange of heterodyne and filter operations, interchange of down-convert and down-sample and interchange of filter and down-sample.

FIR Filters performance, design, and required resources.

Channelizers for constant bandwidth and equal spaced center frequencies.

Sliding, Windowed, and Overlapped Spectrum Analyzers as a Polyphase Filter Bank.

Coupled Digital Drop Receiver and Spectrum Analyzer.

Channelizers for Arbitrary Bandwidth and arbitrary Spacing of Center Frequencies.

Bio:Professor harris holds the Signal Processing Chair of the Communication Systems and Signal Processing Institute at San Diego State University where since 1967 he has taught courses in Digital Signal Processing and Communication Systems. He holds over 20 patents on digital receiver and DSP technology and lectures throughout the world on DSP applications. He consults for organizations requiring high performance, cost effective DSP solutions. He was as adjunct member of the IDA-Princeton Center for Communications Research.

Special note: Dr. harris prefers that his name be spelled with all lower case letters

Power Point Slides Now Available! (144 of them!)

10:30 a.m. - 10:50 a.m.: Refreshment Break/Student Poster Sessions

10:50 a.m. 12:20 p.m.: Tutorial Sessions 4A, 4B and 4C conclude

12:30 p.m.: Event Concludes