Browsing by Subject "Frequency response"

Now showing items 1-11 of 11

    • Conference Object  

      Choi-Wiliams time frequency analysis of a three degree freedom non-linear system 

      Kyprianou, Andreas; Staszewski, W.; Worden, K. (Katholieke Universiteit Leuven, 2006)
      The response of a non-linear mechanical oscillator, depending on the type of non-linearity, to an excitation of particular harmonic might contain sub- and super-harmonics, transients and chaotic components. The conventional ...
    • Article  

      A compact multiband monopole antenna with a defected ground plane 

      Antoniades, Marcos A.; Eleftheriades, G. V. (2008)
      A compact multiband antenna is proposed that consists of a printed circular disc monopole antenna with an L-shaped slot cut out of the ground, forming a defected ground plane. Analysis of the current distribution on the ...
    • Article  

      Estimation of rotational frequency responses 

      Mottershead, J. E.; Kyprianou, Andreas; Ouyang, H. (2003)
      Rotational frequency response functions are potentially valuable for structural damage detection but are difficult to obtain because of the practical problems of applying a pure moment. In the literature various indirect ...
    • Conference Object  

      Frequency-domain characterization of Singular Spectrum Analysis eigenvectors 

      Leles, M. C. R.; Cardoso, A. S. V.; Moreira, M. G.; Guimaraes, H. N.; Silva, C. M.; Pitsillides, Andreas (Institute of Electrical and Electronics Engineers Inc., 2017)
      Singular Spectrum Analysis (SSA) is a nonparametric approach used to decompose a time series into meaningful components, related to trends, oscillations and noise. SSA can be seen as a spectral decomposition, where each ...
    • Article  

      Information theoretic bounds for compound MIMO Gaussian channels 

      Denic, S. Z.; Charalambous, Charalambos D.; Djouadi, S. M. (2009)
      In this paper, achievable rates for compound Gaussian multiple-input-multiple-output (MIMO) channels are derived. Two types of channels, modeled in the frequency domain, are considered when: 1) the channel frequency response ...
    • Article  

      Minimum relative entropy criterion for damage detection and location 

      Kyprianou, Andreas; Mares, C.; Charalambous, Charalambos D.; Mottershead, J. E. (2007)
      Relative entropy has been employed, as an alternative to other regularization methods, in solving ill-conditioned linear inverse problems. Damage detection when treated as structural modification imparted by the damage ...
    • Article  

      Minimum relative entropy criterion for damage detection and location 

      Kyprianou, Andreas; Mares, C.; Charalambous, C. D.; Mottershead, J. E. (2007)
      Relative entropy has been employed, as an alternative to other regularization methods, in solving ill-conditioned linear inverse problems. Damage detection when treated as structural modification imparted by the damage ...
    • Conference Object  

      Minimum relative entropy criterion for damage detection and location 

      Mares, C.; Kyprianou, Andreas (Affiliation: Brunel University, School of Engineering and Design, United KingdomAffiliation: University of Cyprus, Department of Mechanical and Manufacturing Engineering, CyprusCorrespondence Address: Mares, C.Brunel University, School of Engineering and DesignUnited Kingdomemail: Cristinel.Mares@brunel.ac.uk, 2009)
      Relative entropy has been employed, as an alternative to other regularization methods, in solving ill-conditioned linear inverse problems. Damage detection when treated as structural modification imparted by the damage ...
    • Article  

      Minimum relative entropy criterion for damage detection and location 

      Kyprianou, Andreas; Mares, C.; Charalambous, Charalambos D.; Mottershead, J. E. (2007)
      Relative entropy has been employed, as an alternative to other regularization methods, in solving ill-conditioned linear inverse problems. Damage detection when treated as structural modification imparted by the damage ...
    • Conference Object  

      Robust capacity of a Gaussian noise channel with channel and noise uncertainty 

      Charalambous, Charalambos D.; Denic, S. Z.; Djouadi, S. M. (2005)
      This paper is concerned with the problem of defining, and computing the capacity of a continuous-time additive Gaussian noise communication channel when the true frequency response of the channel, and the power spectral ...
    • 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 ...