PhD Candidate Marc Lichtman (advisor - Dr. Jeff Reed) is the recipient of the AOC Captial Club Electronic Warfare Scholarship in the amount of $2,500.00. This scholarship is awarded annually to greater Washington DC area universities (Washington DC, Maryland and Virginia) with engineering programs. More details are available at http://aoccapitolclub.com/awards.php.
Drs. Yang and Reed have been awarded a grant in the amount of $150,000 from the Army Research Office (ARO) to develop a cognitive medical wireless testbed system (COMWITS). COMWITS, pictured below, will provide a unique opportunity for researchers to test innovative cognitive wireless communications, sensor networks, and biomedical applications under real world conditions to ensure essential intelligence, surveillance, and reconnaissance capabilities. The testbed system can also being used by external researchers and industries through collaboration as well as undergraduate students through the NSF research experience for undergraduates program.
Classes can be added for the spring semester beginning October 22, 2014 and continue through October 28. Once again, we will be offering a course in Software Defined Radio and Cognitive Radio Design. This class features hands-on tutorials and team projects covering topics in GNU Radio, REDHAWK, Liquid DSP, CORNET testbed, Commercial and Defense Applications, R&D, and Test & Evaluation. Download the flyer here.
Wireless @ Virginia Tech through a contribution from The Virginia Wireless Association has established a Merit Fellowship that will be available in the Fall of 2015 to new, incoming, exceptional communications students. The fellowship is not available for current students. For more information on the fellowship, please contact Dr. Walid Saad at walids at vt.edu.
Dr. Walid Saad has received 3 grants from the NSF. The first grant was awarded in the amount of $249,999.00 to develop a multidisciplinary framework that weaves together principles from cybersecurity, control theory, networking and criminology. The framework will include novel security mechanisms for NCPSs founded on solid control-theoretic and related notions, analytical tools that allow incorporation of bounded human rationality in NCPS security, and experiments with real-world attack scenarios. A newly built cross-institutional NCPS simulator will be used to evaluate the proposed mechanisms in realistic environments.
The second grant in the amount of $227,482.00 was awarded to address specific challenges in Device-to-Device communications. Device-to-device (D2D) communications between mobile devices over the reliable and pervasive cellular network infrastructure constitutes one of the most promising technologies for further accelerating the penetration of mobile social services. As compared to conventional D2D over short-range and limited-capacity technologies such as Bluetooth, D2D over cellular provides longer transmission ranges, improved spectrum sharing, higher capacities, guaranteed quality-of-service, and a broader range of applications and services. Owing to its promising potential, D2D is now viewed by both academia and standardization bodies as a cornerstone technology in emerging 5th generation (5G) wireless systems. Leveraging cellular D2D for mobile social applications requires addressing a variety of technical challenges that are characterized by a strong interplay between social factors such as content correlation, and wireless features such as network-controlled resource allocation and interference management. This project addresses these challenges by introducing a novel network optimization framework, cognizant of both social and wireless realms, suitable for ensuring the delivery of high-speed, high-quality social networking services over cellular D2D communications. Specifically, new D2D-oriented socio-technological metrics and novel semi-distributed resource allocation and content delivery algorithms will be developed to optimize the quality-of-service of social network-aware D2D systems.
The third grant in the amount of $166,502.00 was awarded to help facilitate next-generation public safety communication (PSC) systems. PSC's must deliver high-capacity wireless services to public safety personnel and users in disaster-affected areas, with little reliance on infrastructure. Modern-day PSC systems have yet to catch up with the past decade's wireless revolution. Coping with the foreseen stringent service requirements in future PSC systems mandates major innovations that can increase spectral efficiency. This, in turn, requires tackling multidisciplinary challenges: 1) developing incentive mechanisms for government agencies, providers, and users to share their precious spectrum resources; 2) dynamically managing interdependent spectrum markets; and 3) efficiently modeling and operating sustainable communication protocols that can function with little infrastructure support. This project brings together researchers in wireless communications and networking, game theory, mathematics, and public safety administration to address these challenges and boost the efficiency of PSC by introducing a novel framework that provides the necessary analytical tools for modeling, designing, analyzing, and operating large-scale spectrum sharing in disaster and emergency situations.
Several Virginia Tech students presented their papers at MILCOM 2014. MILCOM stands for Military Communications Conference and was held this year in Baltimore, MD. The following students were accepted to present their papers:
Aditya Padaki, Ph.D. candidate, (advisor - Dr. Jeff Reed), "Receiver Non-Linearity Aware Resource Allocation for Dynamic Spectrum Access Systems", authored by Aditya V. Padaki, Ravi Tandon and Jeffrey H. Reed.
Aditya Padaki Presents at MILCOM 2014
Javier Schloemann, Ph.D. candidate, (advisor - Dr. R. Michael Buehrer), "On the Value of Collaboration in Non-Line-of-Sight Location Estimation", authored by Javier Schloemann and R. Michael Buehrer.
Javier Schloeman Presents at MILCOM 2014
Munnawar Sohul, Ph.D. candidate, (advisor - Dr. Jeff Reed), "Quality of Service Assurance for Shared Spectrum Systems", authored by Munawwar M. Sohul, Xiaofu Ma, Taeyoung Yang, Jeffrey H. Reed.
Thaddeus Czauski, Ph.D. candidate, (advisor - Dr. Jeff Reed) "Detection and Mitigation of Uplink Control Channel Jamming in LTE", authored by Marc Lichtman; Thaddeus Czauski; Sean Ha; Paul David; Jeffrey Reed.
SaiDhiraj Amuru, Ph.D candidate, (advisor - Dr. R. Michael Buehrer), "Optimal Jamming using Delayed Learning", authored by SaiDhiraj Amuru and R. Michael Buehrer.
Mahi Abdelbar, Ph.D candidate, (advisors- Dr. William Tranter and Dr. Tamal Bose), "Cumulative Combining of Cumulants - Based Modulation Classification in CR Networks", authored by Mahi Abdelbar, William Tranter, and Tamal Bose
Mahi Abdelbar Presents at MILCOM 2014
Dr. Jerry Park and Dr. Jeff Reed will be participating members of the planning committee for the Wireless Spectrum R&D (WSRD) Senior Steering Group (SSG) Workshop VI: Federal-Commercial Spectrum Data: Understanding Information Exchange Needs, Issues, and Approaches, which will be held in Arlington, VA on Oct. 21, 2014. This workshop, which is partially sponsored by the National Science Foundation (NSF), is being organized by the National Telecommunications and Information Administration (NTIA), the National Coordination Office (NCO), and selected representatives from academia. This invitational workshop will bring together highly-visible experts on wireless systems and spectrum management from the Federal Government, academia, and the private sector. The primary goal of the workshop is to assist in developing recommendations for the Federal spectrum research portfolio. For more information please visit WSRD
Recently, Dr. Jerry Park, Site Director the Virginia Tech BWAC site, and Dr. Marwan Krunz, Co-Director of the University of Arizona BWAC site, were awarded a $200K grant from the National Science Foundation (NSF) to study the coexistence of heterogeneous secondary networks in spectrum sharing scenarios. Dr. Krunz is a professor in the Dept. of ECE at the University of Arizona. The U.S. government has been aggressively pushing new initiatives to identify and make available new swaths of spectrum to support the development of new wireless applications. It has also been promoting the development of new technologies and regulatory policies for enhancing spectrum utilization. Although coexistence issues in the ISM bands have been studied before, the situation in the TV bands and other shared access spectrum (e.g., 3.5 GHz band) is more complex and challenging due to the signal propagation characteristics, incumbent protection rules, and the disparity of PHY/MAC strategies of secondary systems. To date, most research efforts have focused on incumbent protection, and little attention has been given to the coexistence of secondary systems in the context of spectrum sharing. Through the proposed research, we aspire to fill this void and stimulate more research in this important area.
Recently, Drs. Jerry Park, Carl Dietrich, Vuk Marojevic, and Jeff Reed were awarded a grant for $250K from the Army Research Office (ARO) to design and build a LTE-enhanced cognitive radio testbed (see Figure 1). Testbeds play a major role in developing and testing new wireless communications technologies and systems. Virginia Tech’s COgnitive Radio NETwork (CORNET) is a large-scale testbed featuring forty-eight remotely accessible software radio nodes that are used in education and research. The CORNET nodes enable dynamic spectrum access (DSA) and cognitive radio (CR) related research and education using open-source software and flexible hardware. CORNET is unique in that it offers a wide range of experimental research and educational tools, including an FCC experimental license agreement for several frequency bands. As communications systems gradually move towards 4G using long-term evolution (LTE) technology, LTE nodes need to be integrated into the CORNET testbed to be able to train engineers and students on this emerging technology and its evolution.