Now showing items 1-11 of 11

    • Convexity properties of detection probability for noncoherent detection of a modulated sinusoidal carrier 

      Ozturk, C.; Dulek, B.; Gezici, Sinan (Institute of Electrical and Electronics Engineers, 2018)
      In this correspondence paper, the problem of noncoherent detection of a sinusoidal carrier is considered in the presence of Gaussian noise. The convexity properties of the detection probability are characterized with respect ...
    • Jamming of Wireless Localization Systems 

      Gezici, Sinan; Gholami, M. R.; Bayram, S.; Jansson M. (Institute of Electrical and Electronics Engineers Inc., 2016)
      In this paper, the optimal jamming of wireless localization systems is investigated. Two optimal power allocation schemes are proposed for jammer nodes in the presence of total and peak power constraints. In the first ...
    • Jamming strategies in wireless source localization systems 

      Keskin, Musa Furkan; Öztürk, Cüneyd; Bayram, Suat; Gezici, Sinan (IEEE, 2019-08)
      We consider optimal jamming strategies in wireless source localization systems, where anchor nodes estimate positions of target nodes in the presence of jammers that emit zero-mean Gaussian noise. The Cramér-Rao lower bound ...
    • Localization via visible light systems 

      Keskin, M. F.; Sezer, A. D.; Gezici, Sinan (Institute of Electrical and Electronics Engineers, 2018)
      Visible light communication (VLC) is an emerging paradigm that enables multiple functionalities to be accomplished concurrently, including illumination, high-speed data communications, and localization. Based on the VLC ...
    • Optimal and robust power allocation for visible light positioning systems under illumination constraints 

      Keskin, Musa Furkan; Sezer, Ahmet Dündar; Gezici, Sinan (IEEE, 2019-01)
      The problem of optimal power allocation among light emitting diode (LED) transmitters in a visible light positioning system is considered for the purpose of improving localization performance of visible light communication ...
    • Optimal channel switching in multiuser systems under average capacity constraints 

      Sezer, A. D.; Gezici, Sinan (Elsevier, 2017)
      In this paper, the optimal channel switching problem is studied for average capacity maximization in the presence of multiple receivers in the communication system. First, the optimal channel switching problem is proposed ...
    • Optimal jamming of wireless localization systems 

      Gezici, Sinan; Gholami, M.R.; Bayram, S.; Jansson, M. (IEEE, 2015-06)
      In this study, optimal jamming of wireless localization systems is investigated. Two optimal power allocation schemes are proposed for jammer nodes in the presence of total and peak power constraints. In the first scheme, ...
    • Optimal power allocation for average detection probability criterion over flat fading channels 

      Sarıtaş, S.; Dulek, B.; Sezer, A. D.; Gezici, Sinan; Yüksel S. (Institute of Electrical and Electronics Engineers Inc., 2017)
      In this paper, the problem of optimal power allocation over flat fading additive white Gaussian noise channels is considered for maximizing the average detection probability of a signal emitted from a power constrained ...
    • Optimal power allocation for jammer nodes in wireless localization systems 

      Bayram, S.; Keskin, M. F.; Gezici, Sinan; Arıkan, Orhan (Institute of Electrical and Electronics Engineers Inc., 2017)
      In this paper, optimal power allocation strategies are investigated for jammer nodes in a wireless localization system. Building upon the concept of the restricted Bayesian approach, a generalized optimization strategy, ...
    • Physical layer security over frequency selective fading channels 

      Ayhan, Kadir (Bilkent University, 2016-01)
      The inherent open nature of the transmission medium makes security a challenging issue in wireless networks. Physical layer security, which is an alternative or a complement to the cryptographic approaches, exploits the ...
    • Power control games between anchor and jammer nodes in wireless localization networks 

      Sezer, A. D.; Gezici, Sinan (Institute of Electrical and Electronics Engineers, 2018)
      In this paper, a game theoretic framework is proposed for wireless localization networks that operate in the presence of jammer nodes. In particular, power control games between anchor and jammer nodes are designed for a ...