• Login
    View Item 
    •   etd@IISc
    • Division of Electrical, Electronics, and Computer Science (EECS)
    • Electrical Communication Engineering (ECE)
    • View Item
    •   etd@IISc
    • Division of Electrical, Electronics, and Computer Science (EECS)
    • Electrical Communication Engineering (ECE)
    • View Item
    JavaScript is disabled for your browser. Some features of this site may not work without it.

    Differential Encoding for Real-Time Status Updates

    View/Open
    Thesis full text (512.6Kb)
    Author
    Bhambay, Sanidhay
    Metadata
    Show full item record
    Abstract
    We consider the problem of status updates of a physical process over an unreliable channel. In this setting, one may not be able to reliably transmit the current state at all times. Instead, one is interested in the timeliness of the accurately received information. This is a setting for several cyber-physical system applications that require real-time monitoring and control. In this thesis, fi rst we have studied the periodic data transmission schemes for highly correlated source, that can always exploit the temporal correlation in the source messages. When the source has no feedback, it can periodically send the actual information, interspersed with differential messages. On the availability of receiver's feedback at the source, it can decide to send either the differential or the actual information, at each transmission opportunity. We show a stochastic ordering among the update schemes, to conclude that the differential encoding improves the timeliness performance, only if the receiver's feedback is available. We also identify the scenarios when it is advantageous to use differential encoding with feedback, considering a cost for feedback messages. Second, we have studied the data transmission scheme for general correlated sources that can elect to transmit actual or differential state information depending on the current state. This encoding scheme generalizes the actual and differential updates schemes. Using this generalized scheme, we quantify the timeliness gains for general Markov sources using block Markov chains.
    URI
    https://etd.iisc.ac.in/handle/2005/4916
    Collections
    • Electrical Communication Engineering (ECE) [401]

    etd@IISc is a joint service of SERC & J R D Tata Memorial (JRDTML) Library || Powered by DSpace software || DuraSpace
    Contact Us | Send Feedback | Thesis Templates
    Theme by 
    Atmire NV
     

     

    Browse

    All of etd@IIScCommunities & CollectionsTitlesAuthorsAdvisorsSubjectsBy Thesis Submission DateThis CollectionTitlesAuthorsAdvisorsSubjectsBy Thesis Submission Date

    My Account

    LoginRegister

    etd@IISc is a joint service of SERC & J R D Tata Memorial (JRDTML) Library || Powered by DSpace software || DuraSpace
    Contact Us | Send Feedback | Thesis Templates
    Theme by 
    Atmire NV