Now showing items 1-10 of 10

    • Cognitive and Cooperative Wireless Networks 

      Palazzo, S.; Dardari, D.; Dohler, M.; Gezici, Sinan; Giupponi, L.; Luise, M.; Pérez Romero, J.; Shamai, S.; Noguet, D.; Moy, C.; Asheid, G. (Springer-Verlag Italia s.r.l., 2012)
      The traditional approach of dealing with spectrum management in wireless communications has been the definition of a licensed user granted with exclusive exploitation rights for a specific frequency. While it is relatively ...
    • Heterogeneous and Opportunistic Wireless Networks 

      Pérez-Romero, J.; Palazzo, S.; Galluccio, L.; Morabito, G.; Leonardi, A.; Antón-Haro, C.; Arikan, E.; Asheid, G.; Belleville, M.; Dagres, I.; Dardari, D.; Dohler, M.; Eldar, Y.; Gezici, Sinan; Giupponi, L.; Guillemot, C.; Iosifidis, G.; Kieffer, M.; Kountouris, M.; Luise, M.; Masera, G.; Matamoros, J.; Miliou, N.; Morche, D.; Moy, C.; Navarro, C.; Olmo, G.; Palicot, J.; Pedone, R.; Ramakrishnan, V.; Shamai, S.; Tyczka, P.; Vandendorpe, L.; Vanelli-Coralli, A.; Weidmann, C.; Zalonis, A. (Springer-Verlag Italia s.r.l., 2012)
      Recent years have witnessed the evolution of a large plethora of wireless technologies with different characteristics, as a response of the operators' and users' needs in terms of an efficient and ubiquitous delivery of ...
    • LOS/NLOS detection for UWB signals: A comparative study using experimental data 

      Decarli, N.; Dardari, D.; Gezici, Sinan; D'Amico, A.A. (IEEE, 2010)
      In this paper the problem of detecting the channel state between LOS and NLOS conditions is addressed using UWB signals. A new distribution-based identification approach is proposed and its performance is compared with ...
    • Performance limits on ranging with cognitive radio 

      Dardari, D.; Karisan, Yasir; Gezici, Sinan; D'Amico, A. A.; Mengali, U. (IEEE, 2009-06)
      Cognitive radio is a promising paradigm for efficient utilization of the radio spectrum due to its capability to sense environmental conditions and adapt its communication and localization features. In this paper, the ...
    • Range estimation in multicarrier systems in the presence of interference: performance limits and optimal signal design 

      Karisan, Y.; Dardari, D.; Gezici, Sinan; D'Amico, A. A.; Mengali, U. (IEEE, 2011)
      Theoretical limits on time-of-arrival (equivalently, range) estimation are derived for multicarrier systems in the presence of interference. Specifically, closed-form expressions are obtained for Cramer-Rao bounds (CRBs) ...
    • Static positioning using UWB range measurements 

      Gholami, M.R.; Ström, E.G.; Sottile F.; Dardari, D.; Conti, A.; Gezici, Sinan; Rydström, M.; Spirito, M.A. (IEEE, 2010)
      The performance of several existing and partly new algorithms for positioning of sensor node based on distance estimate is compared when the distance estimates are obtained from a measurement campaign. The distance estimates ...
    • Statistics of the MLE and Approximate Upper and Lower Bounds-Part 1: Application to TOA Estimation 

      Mallat, A.; Gezici, Sinan; Dardari, D.; Craeye, C.; Vandendorpe, L. (IEEE, 2014-08)
      In nonlinear deterministic parameter estimation, the maximum likelihood estimator (MLE) is unable to attain the Cramer-Rao lower bound at low and medium signal-to-noise ratios (SNR) due the threshold and ambiguity ...
    • Statistics of the MLE and Approximate Upper and Lower Bounds-Part 2: Threshold Computation and Optimal Signal Design 

      Mallat, A.; Gezici, Sinan; Dardari, D.; Vandendorpe, L. (, 2014)
      Threshold and ambiguity phenomena are studied in Part I of this paper where approximations for the mean-squared error (MSE) of the maximum-likelihood estimator are proposed using the method of interval estimation (MIE), ...
    • Statistics of the MLE and approximate upper and lower bounds-Part I: Application to TOA estimation 

      Mallat, A.; Gezici, Sinan; Dardari, D.; Craeye, C.; Vandendorpe, L. (Institute of Electrical and Electronics Engineers Inc., 2014)
      In nonlinear deterministic parameter estimation, the maximum likelihood estimator (MLE) is unable to attain the Cramér-Rao lower bound at low and medium signal-to-noise ratios (SNRs) due the threshold and ambiguity phenomena. ...
    • Statistics of the MLE and approximate upper and lower bounds-part II: Threshold computation and optimal pulse design for TOA estimation 

      Mallat, A.; Gezici, Sinan; Dardari, D.; Vandendorpe, L. (Institute of Electrical and Electronics Engineers Inc., 2014)
      Threshold and ambiguity phenomena are studied in Part I of this paper where approximations for the mean-squared error (MSE) of the maximum-likelihood estimator are proposed using the method of interval estimation (MIE), ...