Browsing by Subject "Signal encoding"

Now showing items 1-14 of 14

    • Conference Object  

      The capacity of unstable dynamical systems-interaction of control and information transmission 

      Charalambous, Charalambos D.; Kourtellaris, C. K.; Loyka, S.; Tzortzis, I. (Institute of Electrical and Electronics Engineers Inc., 2017)
      Feedback capacity is extended beyond classical communication channels, to stochastic dynamical systems, which may correspond to unstable control systems or unstable communication channels, subject to average cost constraints ...
    • Conference Object  

      Demo: A programming cloud of smartphones 

      Konstantinidis, Andreas; Costa, Constantinos; Larkou, G.; Zeinalipour-Yazdi, Constantinos D. (2012)
      In this demonstration we present SmartLab 1, an exciting experimental testbed of approximately 40+ real Android Smartphones, plus emulated devices, deployed at the Department of Computer Science building at the University ...
    • Conference Object  

      Demo: Indoor geolocation on multi-sensor smartphones 

      Li, C. -L; Laoudias, Christos; Larkou, G.; Tsai, Y. -K; Zeinalipour-Yazdi, Constantinos D.; Panayiotou, Christos G. (2013)
      In this demo, we present an efficient hybrid indoor positioning solution that uses multi-sensory location-oriented observations, including WiFi, accelerometer, gyroscope and digital compass data, that are widely available ...
    • Conference Object  

      Disclosure-free GPS trace search in smartphone networks 

      Zeinalipour-Yazdi, Constantinos D.; Laoudias, Christos; Andreou, Maria I.; Gunopulos, Dimitrios (2011)
      In this paper we present a powerful distributed framework for finding similar trajectories in a smart phone network, without disclosing the traces of participating users. Our framework, coined Smart Trace, exploits ...
    • Article  

      Intelligent search in social communities of smartphone users 

      Konstantinidis, Andreas; Zeinalipour-Yazdi, Constantinos D.; Andreou, Panayiotis G.; Samaras, George S.; Chrysanthis, Panos K. (2013)
      Social communities of smartphone users have recently gained significant interest due to their wide social penetration. The applications in this domain, however, currently rely on centralized or cloud-like architectures for ...
    • Article  

      Managing big data experiments on smartphones 

      Larkou, G.; Mintzis, M.; Andreou, Panayiotis G.; Konstantinidis, Andreas; Zeinalipour-Yazdi, Constantinos D. (2016)
      The explosive number of smartphones with ever growing sensing and computing capabilities have brought a paradigm shift to many traditional domains of the computing field. Re-programming smartphones and instrumenting them ...
    • Conference Object  

      Multi-objective query optimization in smartphone social networks 

      Konstantinidis, Andreas; Zeinalipour-Yazdi, Constantinos D.; Andreou, Panayiotis G.; Samaras, George S. (2011)
      The bulk of social network applications for smart phones (e.g., Twitter, Face book, Foursquare, etc.) currently rely on centralized or cloud-like architectures in order to carry out their data sharing and searching tasks. ...
    • Conference Object  

      On the channel capacity of wireless fading channels 

      Charalambous, Charalambos D.; Denic, S. (2002)
      The objectives of this paper are twofold. First, to point out the significance of certain results on stochastic processes in computing the channel capacity for flat fading wireless channels. Second, to design an optimal ...
    • Article  

      Propagation in CSP and SAT 

      Dimopoulos, Yannis; Stergiou, K. (2006)
      Constraint Satisfaction Problems and Prepositional Satisfiability, are frameworks widely used to represent and solve combinatorial problems. A concept of primary importance in both frameworks is that of constraint propagation. ...
    • Conference Object  

      Robust capacity of white Gaussian noise channels with uncertainty 

      Charalambous, Charalambos D.; Denic, S. Z.; Djouadi, S. M. (2004)
      This paper concerns the problem of defining, and computing the channel capacity of a continuous time additive white Gaussian noise channel when the true frequency response of the channel is not completely known to the ...
    • Conference Object  

      SmartP2P: A multi-objective framework for finding social content in P2P smartphone networks 

      Konstantinidis, Andreas; Aplitsiotis, C.; Zeinalipour-Yazdi, Constantinos D. (2012)
      In this demonstration paper, we present a novel framework for searching objects (e.g., images, videos, etc.) captured by the users in a mobile social community. Our framework, is founded on an in-situ data storage model, ...
    • Conference Object  

      SmartTrace: Finding similar trajectories in smartphone networks without disclosing the traces 

      Costa, Constantinos; Laoudias, Christos; Zeinalipour-Yazdi, Constantinos D.; Gunopulos, Dimitrios (2011)
      In this demonstration paper, we present a powerful distributed framework for finding similar trajectories in a smartphone network, without disclosing the traces of participating users. Our framework, exploits opportunistic ...
    • Conference Object  

      Towards planet-scale localization on smartphones with a partial radiomap 

      Konstantinidis, Andreas; Chatzimilioudis, Georgios; Laoudias, Christos; Nicolaou, Silouanos; Zeinalipour-Yazdi, Constantinos D. (2012)
      The majority of smartphone localization systems use Assisted-GPS for fine-grained localization in outdoor spaces or WiFi-based RSS (Received Signal Strength) technologies for coarse-grain positioning in indoor and outdoor ...
    • Conference Object  

      Upper and lower bounds on fsm switching activity 

      Athanasopoulou, E.; Hadjicostis, Christoforos N. (2003)
      This paper obtains upper and lower bounds for the switching activity on the state lines of a finite state machine (FSM) that is driven with typical input sequences. By exploiting the symmetries between the Hamming distances ...