IEEE TRANSACTIONS ON COGNITIVE COMMUNICATIONS AND NETWORKING, VOL. 3, NO. 3, SEPTEMBER 2017 435 Introduction to the Special Section From the IEEE DySPAN 2017 Conference E ARE delighted to introduce the readers to this special section of the IEEE T RANSACTIONS ON C OGNITIVE C OMMUNICATIONS AND N ETWORKING (TCCN), which is devoted to selected papers from the IEEE DySPAN 2017 conference. IEEE DySPAN 2017 was held in Baltimore, MD, USA, between 6 and 9 March 2017. IEEE DySPAN, since its creation in 2005, has continued to be a premier forum for knowledge exchange in the broad area of radio spectrum management. What makes the IEEE DySPAN conference unique is that it forms a forum not only for radio spectrum technology but also for radio spectrum policy scientists. In 2017, IEEE DySPAN reviewed 36 technology papers, out of which 15 were accepted, and reviewed 20 policy papers, out of which 9 were accepted. Some new measures were introduced (double-blind review process and face-toface TPC meeting) to significantly improve the review process quality. Invited by Prof. Michele Zorzi, Editor-in-Chief of TCCN, three of us (select chairs of IEEE DySPAN 2017 technology and policy tracks) invited papers for this special section and coordinated the review process. From the pool of accepted IEEE DySPAN papers, we selected five technology and four policy papers for submission to this special issue. The selection was based on the IEEE DySPAN review scores and on the technical program committee evaluation. Out of all invited papers all but one technology paper have been accepted for the final publication. Additionally, we invited the organizing team of the IEEE DySPAN 2017 Spectrum Challenge to submit a paper summarizing the results of their experiments. All IEEE DySPAN papers submitted to this special section were expanded with respect to their original IEEE DySPAN 2017 version and went through another rigorous review process by (at least) three independent expert reviewers each. As a result of this process, this issue is composed of a diverse set of papers, ranging from sensing performance (“3.5 GHz Environmental Sensing Capability Detection Thresholds and Deployment” by T. Nguyen et al.), implementation (“Prototype of IEEE 802.11af-based Baseband IC Enabling Compact Device for Wireless Local Area Network Systems in TV White-Spaces” by T. Matsumura et al.), security (“Spoofing Uplink Spatial Multiplexing with Diverse Spectrum” by A. Flores and E. Knightly), resource allocation (“Competitive Resource Allocation in HetNets: The Impact W Date of current version October 6, 2017. Digital Object Identifier 10.1109/TCCN.2017.2754898 of Small-cell Spectrum Constraints and Investment Costs” by C. Chen et al.), spectrum rights (“Fundamental Limits on ex-post Enforcement and Implications for Spectrum Rights” by V. Muthukumar and A. Sahai), interference assessment (“Risk-Informed Interference Assessment for Shared Spectrum Bands: A Wi-Fi/LTE Coexistence Case Study” by A. M. Voicu et al.), regulatory enforcement (“Statistical Inference on Spectrum Data for Design and Enforcement of Harm Claim Thresholds” by J. Riihijärvi et al.), licensed shared access (“Regulatory Pilot on Licensed Shared Access in a Live LTE-TDD Network in IMT Band 40” by D. Guiducci et al.), and experimentation (“DySPAN Spectrum Challenge: Situational Awareness and Opportunistic Spectrum Access Benchmarked” by F. Wunsch et al.). We hope that this set of papers provides a representative view of the vision of the IEEE DySPAN conference, and is an excellent selection of the state of the art in spectrum research that will be appreciated by experts and novices alike. We would like to use this opportunity to thank Prof. Zorzi for leading us through the editorial process. Our words of appreciation go to all reviewers that did a great job in assessing the quality of the submissions to this special section (especially given the very tight deadlines). Finally, we would like to thank the rest of the IEEE DySPAN 2017 Technical Program Chairs: Prof. J. Nicholas Laneman and Dr. Matthew Hussey (General Chairs), and Dr. Giulia McHenry (Policy Co-Chair), for their help in coordinating the paper selection process for IEEE DySPAN 2017 conference. We hope that the readers will enjoy this special section. P RZEMYSŁAW PAWEŁCZAK, Guest Editor Department of Electrical Engineering Mathematics and Computer Science Delft University of Technology 2628 CD Delft, The Netherlands (e-mail: email@example.com) R ALF M. B ENDLIN, Guest Editor AT&T Labs Austin, TX 78759 USA (e-mail: firstname.lastname@example.org; email@example.com) M ARTIN B. H. W EISS, Guest Editor School of Information Sciences University of Pittsburgh Pittsburgh, PA 15260 USA (e-mail: firstname.lastname@example.org) c 2017 IEEE. Personal use is permitted, but republication/redistribution requires IEEE permission. 2332-7731 See http://www.ieee.org/publications_standards/publications/rights/index.html for more information. 436 IEEE TRANSACTIONS ON COGNITIVE COMMUNICATIONS AND NETWORKING, VOL. 3, NO. 3, SEPTEMBER 2017 Przemysław Pawełczak received the Ph.D. degree from Delft University of Technology (TU Delft) in 2009. He completed his postdoctoral training at UCLA in 2011, and held a Research Scientist position at Fraunhofer Heinrich Hertz Institute in Berlin in 2012. Since 2013, he is a (tenure-track) Assistant Professor at the Software Technology Department of TU Delft. His Ph.D. research targeted performance analysis of cognitive radio and dynamic spectrum access networks. His current research interest focuses on intermittently powered devices and their applications to wireless communications. He was a TPC Co-Chair of IEEE DySPAN 2017 and and serves as TPC Co-Chair of IEEE RFID since 2017. He and has been a TPC member of IEEE INFOCOM since 2016 and currently serves as an Editor of IEEE W IRELESS C OMMUNICATIONS L ETTERS. Ralf M. Bendlin received the bachelor’s and master’s degrees from the Munich University of Technology in Munich, Germany, and the master’s and Ph.D. degrees from the University of Notre Dame, South Bend, IN, all in electrical engineering and information technology. He is a Principal Member of the Technical Staff at AT&T Labs, Austin, TX. Before joining AT&T Labs, he was a Member of Technical Staff with Intel Corporation, Portland, OR, as a Senior Wireless Systems Architect, and with Texas Instruments Inc., Dallas, TX, as a Systems Engineer. He has worked on algorithm development, performance prediction, optimization, systems architecture, and technology strategy for current and next-generation wireless networks and has actively participated in the definition of several global communications standards for which he holds several patents. He has previously served as the Technical Program Chair of the 2017 IEEE International Symposium on Dynamic Spectrum Access Networks. He currently is a Guest Editor of the IEEE T RANSACTIONS ON C OGNITIVE C OMMUNICATIONS AND N ETWORKING, is a member of the College of Engineering Advisory Council, University of Notre Dame. Martin B. H. Weiss received the B.S.E. in electrical engineering from Northeastern University, the M.S.E. degree in computer, control, and information engineering from the University of Michigan, and the Ph.D. in engineering and public policy from Carnegie Mellon University, where he studied the standards development process under Professor Marvin A. Sirbu. He currently is Professor of telecommunications and Chair of the Department of Informatics and Networked Systems in the School of Computing and Information, University of Pittsburgh, where he also holds a faculty appointment in telecommunications. His overall research theme is the analysis of situations where competing firms must cooperate technically; this has expressed itself in studying the standardization process, Internet interconnection, and, most recently, radio spectrum sharing. His industrial experience includes technical and professional work at several R&D and consulting firms in the United States. From 1978 to 1981, he was a Member of the Technical Staff at Bell Laboratories; from 1983 to 1985, he was a Member of the Technical Staff at the MITRE Corporation; and from 1985 to 1987, he was a Senior Consultant with Deloitte, Haskins, and Sells. He continues to consult with national and international firms, serving as an advisor, analyst, and expert witness. Dr. Weiss’ current research focus is on dynamic spectrum access and intelligent wireless systems. He is currently studying spectrum sharing and spectrum trading with a focus on understanding the system-level factors supporting and constraining the adoption of these technologies. Recent aspects of this have involved studying enforcement in cooperative spectrum sharing approaches, secondary users’ constraints, and decisions using decision analysis and real options analysis. Past projects include technical and cost studies of IP and ATM telephony, bandwidth markets, interconnection of packet networks that support quality of service (QoS), and economics of new technologies in telecommunications. He is the co-author of two books and has written numerous book chapters, major conference papers, and refereed journal papers in the area of standards setting, Internet interconnection, and dynamic spectrum access. He has been invited to serve on numerous expert panels for industry, government, and academia.