Now showing items 1-10 of 10

    • Cooperative precoding and artificial noise design for security over interference channels 

      Özçelikkale, A.; Duman, T. M. (Institute of Electrical and Electronics Engineers Inc., 2015)
      We focus on linear precoding strategies as a physical layer technique for providing security in Gaussian interference channels. We consider an artificial noise aided scheme where transmitters may broadcast noise in addition ...
    • LMS based adaptive prediction for scalable video coding 

      Töreyin, B. Uğur; Trocan, M.; Pesquet-Popescu, B.; Çetin, A. Enis (IEEE, 2006-05)
      3D video codecs have attracted recently a lot of attention, due to their compression performance comparable with that of state-of-art hybrid codecs and due to their scalability features. In this work, we propose a least ...
    • Multicore education through simulation 

      Öztürk, Özcan (IEEE, 2009-07)
      This paper presents the experiences using a commercial full system simulation platform - Simics - in a graduate Chip Multiprocessors class. The Simics platform enables students and researchers to do research on computer ...
    • Nonparametric estimation of hazard functions and their derivatives under truncation model 

      Gürler, Ü.; Wang, J. -L. (Kluwer Academic Publishers, 1993)
      Nonparametric kernel estimators for hazard functions and their derivatives are considered under the random left truncation model. The estimator is of the form of sum of identically distributed but dependent random variables. ...
    • On the interplay between channel sensing and estimation in cognitive radio systems 

      Gursoy, M.C.; Gezici, Sinan (IEEE, 2011)
      Cognitive radio transmissions in the presence of channel uncertainty are considered. In practical scenarios, cognitive secondary users need to perform both channel sensing in order to identify whether the channel is being ...
    • Optimal and suboptimal receivers for code-multiplexed transmitted-reference ultra-wideband systems 

      Tutay, M. E.; Gezici, Sinan (Wiley, 2013)
      In this study, optimal and suboptimal receivers are investigated for code-multiplexed transmitted-reference (CM-TR) ultra-wideband systems. First, a single-user scenario is considered, and a CM-TR system is modeled as a ...
    • Optimal image restoration with the fractional Fourier transform 

      Kutay, M. A.; Haldun M. Özaktaş (OSA - The Optical Society, 1998-04)
      The classical Wiener filter, which can be implemented in O(N log N) time, is suited best for space-invariant degradation models and space-invariant signal and noise characteristics. For space-varying degradations and ...
    • Source and filter estimation for Throat-Microphone speech enhancement 

      Turan, M. A. T.; Erzin, E. (Institute of Electrical and Electronics Engineers Inc., 2016)
      In this paper, we propose a new statistical enhancement system for throat microphone recordings through source and filter separation. Throat microphones (TM) are skin-attached piezoelectric sensors that can capture speech ...
    • Turbo/katlamalı kodlanmış SFBC/STBC-OFDM sistemlerinde yinelemeli kanal kestirimi 

      Doǧan, H.; Çırpan, H. A.; Panayırcı, Erdal (2006-04)
      We consider the design of turbo receiver structures for space-frequency block coded (SFBC/STBC) OFDM systems in unknown frequency selective fading channels. The Turbo receiver structures for SFBC/STBC-OFDM systems under ...
    • Yapısal veri belirsizlikleri altında yarışmacı doğrusal MMSE kestirim 

      Vanlı, N. Denizcan; Sayın, Muhammed Ö.; Kozat, Süleyman S. (IEEE, 2014-04)
      Bu bildiride, yapısal veri belirsizlikleri altında doğrusal kestirim problemi incelenmektedir. Maliyet fonksiyonu olarak ortalama karesel hata (MSE) düşünülmüştür ve sınırlı belirsizlikler altında gürbüz bir algoritma ...