LSU ECE Seminar Announcement and Schedule

         On Thursday, 27 August 2015, 13:00 - 14:00,                   
         in Room 117 EE Building:                                      
                                                                       
             Interdependency of Control and Communications in Cyber    
                     Physical Systems: An Entropy Framework            
                                                                       
                                   Husheng Li                          
                       University of Tennessee, Knoxville              
                                                                       
         Abstract--In order to understand how to operate the physical  
         dynamics of cyber physical systems (CPSs), we study the       
         control of entropy (or equivalently uncertainty) via          
         communications in CPSs. We consider the controller as the     
         Maxwell's demon that decimates the system entropy. Due to the 
         second law of thermodynamics, the system entropy cannot be    
         spontaneously decreased. Therefore, to reduce the system      
         entropy, the controller needs external information            
         communicated from sensors. The following aspects of the       
         proposed framework will be introduced: (a) For a finite state 
         physical system in CPS, we derive upper and lower bounds for  
         the communication requirements. The optimal designs of message
         mechanism and control policy are proposed. (b) For networked  
         physical dynamics nodes (such as generators in a power grid), 
         the entropy propagation is described using ordinary           
         differential equations, in which the communication requirement
         due to quantization error is taken into account. (c) Networked
         CPS is condensed to the continuous space and the corresponding
         entropy evolution is described using partial differential     
         equations (PDEs), for two special types of CPS dynamics.      
         Solutions are obtained for the PDEs to characterize the       
         propagation, decimation and generation of entropy in the      
         field.                                                        
                                                                       
         Bio--Husheng Li received the BS and MS degrees in electronic  
         engineering from Tsinghua University, Beijing, China, in 1998 
         and 2000, respectively, and the Ph.D. degree in electrical    
         engineering from Princeton University, Princeton, NJ, in 2005.
         From 2005 to 2007, he worked as a senior engineer at Qualcomm 
         Inc., San Diego, CA. In 2007, he joined the EECS department of
         the University of Tennessee, Knoxville, TN, as an assistant   
         professor. He is promoted to associate professor in 2013. His 
         research is mainly focused on statistical signal processing,  
         wireless communications, networking, smart grid and game      
         theory. Dr. Li is the recipient of the Best Paper Awards of   
         EURASIP Journal of Wireless Communications and Networks, 2005,
         EURASIP Journal of Advances in Signal Processing, 2015, IEEE  
         ICC, 2011 and IEEE SmartGridComm 2012, and the Best Demo Award
         of IEEE Globecom, 2010.                                       
                                                                       
         Thursday, 27 August 2015, 13:00 - 14:00                       
         Room 117 EE Building                                          
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Schedule as of 25 Aug 2015.  For updates visit http://www.ece.lsu.edu/seminar

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