Browsing by Subject "Asymptotic stability"

Now showing items 1-20 of 27

    • Article  

      Asymptotically optimal AR spectral estimate for multistep prediction 

      Karagrigoriou, Alex; Vonta, Filia (2000)
      This paper discusses the concept of asymptotic optimality from the frequency domain point of view making use of the direct method for multiple prediction. In particular, it is shown that with the use of a new autoregressive ...
    • 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 ...
    • Article  

      Control of continuous-time linear Gaussian systems over additive Gaussian wireless fading channels: A separation principle 

      Charalambous, Charalambos D.; Farhadi, A.; Denic, S. Z. (2008)
      This note is concerned with the control of continuous-time linear Gaussian systems over additive white noise wireless fading channels subject to capacity constraints. Necessary and sufficient conditions are derived, for ...
    • Conference Object  

      Designing stable inverters and state observers for switched linear systems with unknown inputs 

      Sundaram, S.; Hadjicostis, Christoforos N. (2006)
      We present a method for estimating the inputs and states in discrete-time switched linear systems with unknown inputs. We first investigate the problem of system invertibility, which reconstructs the unknown inputs based ...
    • Article  

      Discrete-time risk-sensitive filters with on-Gaussian initial conditions and their ergodic properties 

      Dey, S.; Charalambous, Charalambos D. (2001)
      We study asymptotic stability properties of risk-sensitive filters with respect to their initial conditions. We consider a linear time-invariant systems with initial conditions that are not necessarily Gaussian. We show ...
    • Article  

      Empirical Bayes approach to block wavelet function estimation 

      Abramovich, F.; Besbeas, P.; Sapatinas, Theofanis (2002)
      Wavelet methods have demonstrated considerable success in function estimation through term-by-term thresholding of the empirical wavelet coefficients. However, it has been shown that grouping the empirical wavelet coefficients ...
    • Article  

      Filtering for linear systems driven by fractional Brownian motion 

      Ahmed, N. U.; Charalambous, Charalambos D. (2003)
      In this paper we study continuous time filtering for linear multidimensional systems driven by fractional Brownian motion processes. We present the derivation of the optimum linear filter equations which involve a pair of ...
    • Article  

      Global asymptotic stability of max-min congestion control schemes 

      Lestas, Marios; Ioannou, Petros A.; Pitsillides, Andreas; Hadjipollas, George (2017)
      A number of congestion control schemes which adopt the max-min fairness criterion and do not require maintenance of per flow states within the network have been proposed in the literature. The establishment of global ...
    • Conference Object  

      A mathematical framework for robust control over uncertain communication channels 

      Charalambous, Charalambos D.; Farhadi, A. (2005)
      In this paper, a mathematical framework for studying robust control over uncertain communication channels is introduced. The theory is developed by 1) Generalizing the classical information theoretic measures to the robust ...
    • Conference Object  

      A new robust adaptive control scheme for linear time varying plants 

      Fidan, B.; Zhang, Y.; Ioannou, Petros A. (2002)
      In a recent work, a new linear adaptive controller based on certainty-equivalence and backstepping design, which promises a level of transient and asymptotic performance comparable to that of the tuning functions adaptive ...
    • Article  

      A numerical study on the finite element solution of singularly perturbed systems of reaction-diffusion problems 

      Xenophontos, Christos A.; Oberbroeckling, L. (2007)
      We consider the approximation of singularly perturbed systems of reaction-diffusion problems, with the finite element method. The solution to such problems contains boundary layers which overlap and interact, and the ...
    • Conference Object  

      On a hybrid model for max-min congestion controllers 

      Lestas, Marios; Ioannou, Petros A.; Pitsillides, Andreas (2004)
      In this paper we address the congestion control problem in computer networks offering a single class of best effort service. The problem is viewed as a resource allocation problem. The objective is to distribute the available ...
    • Conference Object  

      On a hybrid model for max-min congestion controllersAAA 

      Lestas, Marios; Ioannou, Petros A.; Pitsillides, Andreas (2004)
      In this paper we address the congestion control problem in computer networks offering a single class of best effort service. The problem is viewed as a resource allocation problem. The objective is to distribute the available ...
    • Article  

      On efficient AR spectral estimation for long-range predictions 

      Karagrigoriou, Alex; Vonta, Filia (2005)
      This article discusses the concept of asymptotic efficiency from the frequency domain point of view making use of the direct method for multiple prediction. In particular, it is shown that with the use of a new autoregressive ...
    • Article  

      Parameter convergence of a new class of adaptive controllers 

      Zhang, Y.; Ioannou, Petros A.; Chien, C. -C (1996)
      A new class of adaptive control schemes for minimum-phase linear time invariant (LTI) systems has recently been developed using nonlinear design techniques which guarantee improved transient performance in addition to ...
    • Article  

      Power divergence family of tests for categorical time series models 

      Fokianos, Konstantinos (2002)
      A fundamental issue that arises after fitting a regression model is that of testing the goodness of the fit. Our work brings together the power divergence family of goodness of fit tests and regression models for categorical ...
    • Article  

      Residual-based block bootstrap for unit root testing 

      Paparoditis Efstathios, E.; Politis, Dimitris Nicolas (2003)
      A nonparametric, residual-based block boostrap procedure is proposed in the context of testing for integrated (unit root) time series. The resampling procedure is based on weak assumptions on the dependence structure of ...
    • Article  

      Residual-based block bootstrap for unit root testingAAA 

      Paparoditis Efstathios, E.; Politis, Dimitris Nicolas (2003)
      A nonparametric, residual-based block boostrap procedure is proposed in the context of testing for integrated (unit root) time series. The resampling procedure is based on weak assumptions on the dependence structure of ...
    • Article  

      Robustness of nonlinear control systems with respect to unmodeled dynamics 

      Zhang, Y.; Ioannou, Petros A. (1999)
      In theory, it can be established that nonlinear control laws for linear or nonlinear plants can be used to meet strict performance requirements. The success of these control designs in practical situations will very much ...
    • Conference Object  

      Robustness of nonlinear control systems with respect to unmodeled dynamics 

      Zhang, Youping; Ioannou, Petros A. (1996)
      In this paper, we examine the global stability properties of nonlinear controllers in the presence of high frequency unmodeled dynamics. We develop necessary and sufficient conditions for a general class of nonlinear control ...