应泛网无线通信教育部重点实验室的邀请，美国休斯顿大学（University of Houston）的Miao Pan博士于2016年6月27日访问我校并作学术报告。
报告题目：D-FROST: Distributed Frequency Reuse Based Opportunistic Spectrum Trading via Dynamic Matching with Evolving Preferences
主讲人：Dr. Miao Pan
Abstract: Spectrum trading creates more accessing opportunities for secondary users (SUs), and economically benefits the primary users (PUs). Compared with centralized spectrum trading designs, e.g., spectrum auction, distributed spectrum trading better captures instantaneous spectrum trading opportunities over large geographical regions without incurring extra infrastructure deployment and control cost. However, existing distributed spectrum trading designs have limited concern about spectrum reuse. Considering spatial reuse, in this talk, I will present a novel distributed frequency reuse based opportunistic spectrum trading (D-FROST) scheme, which can further improve spectrum utilization, provide more accessing opportunities for SUs, and increase the revenues of PUs. In this study, we employ conflict graph to characterize the SUs’ co-channel and radio interferences, and mathematically formulate a centralized PUs’ revenue maximization problem under multiple wireless transmission constraints. Due to the NP-hardness to solve the problem and no-existence of centralized trading entity, we develop the DFROST algorithms based on dynamic matching with evolving preferences, and prove its stability. Through simulations, we show that the D-FROST algorithm is superior to other distributed spectrum trading algorithms without considering spectrum reuse, yields results close to the centralized optimal one, and is effective in increasing PUs’ revenue and improving spectrum utilization. Besides, based on D-FROST, I will also discuss some privacy preserving issues of distributed spectrum trading.
Dr. Miao Panis an Assistant Professor in the Department of Electrical and Computer Engineering at University of Houston. He was a recipient of NSF CAREER Award in 2014. Dr. Pan received Ph.D. degree in Electrical and Computer Engineering from University of Florida in August 2012. He was an Assistant Professor in the Department of Computer Science at Texas Southern University from Fall 2012 to Spring 2015. Dr. Pan's research interests include cognitive radio networks, cyber-physical systems, and cybersecurity. He has published 20 papers in prestigious journals including IEEE/ACM Transactions on Networking, IEEE Journal on Selected Areas in Communications, IEEE Transactions on Mobile Computing, and IEEE Transactions on Smart Grid, and over 50 papers in top conferences such as IEEE INFOCOM, ICDCS, and IEEE IPDPS. His work on cognitive radio network won Best Paper Award in Globecom 2015. Dr. Pan serves as a Technical Reviewer for many international journals and conferences. He has also been serving as a Technical Program Committee member of several top international conferences, e.g., IEEE INFOCOM 2014 - 2017. Dr. Pan is a member of IEEE and IEEE ComSoc.