Now showing items 1-3 of 3

    • Implementation of an OFDM based underwater acoustic modem 

      Demirörs, Emrecan (Bilkent University, 2011)
      In this thesis we designed and implemented an underwater acoustic (UWA) communication system employing multicarrier modulation in the form of orthogonal frequency division multiplexing (OFDM). UWA communication became ...
    • 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) ...