Now showing items 1-20 of 20

    • Capacity bounds and concatenated codes over segmented deletion channels 

      Wang, F.; Duman, T. M.; Aktas, D. (IEEE, 2013)
      We develop an information theoretic characterization and a practical coding approach for segmented deletion channels. Compared to channels with independent and identically distributed (i.i.d.) deletions, where each bit is ...
    • Design and operation of MinIAQ: an untethered foldable miniature quadruped with individually actuated legs 

      Karakadıoǧlu, C.; Askari, M.; Özcan, O. (IEEE (Institute of Electrical and Electronics Engineers), 2017)
      This paper presents the design, development, and basic operation of MinIAQ, an origami-inspired, foldable, untethered, miniature quadruped robot. Instead of employing multilayer composite structures similar to most ...
    • Energetic efficient synthesis of general mutual intensity distribution 

      Zalevsky, Z.; Medlovic, D.; Ozaktas, H. M. (Institute of Physics Publishing, 2000)
      The mutual intensity distribution of a light beam may contain available information. The task of encoding a given mutual intensity distribution is addressed in this paper. Various approaches for encoding the mutual intensity ...
    • Guessing with lies 

      Arikan, E.; Boztaş, S. (2002)
      A practical algorithm was obtained for directly generating an optimal guessing sequence for guessing under lies. An optimal guessing strategy was defined as one which minimizes the number of average number of guesses in ...
    • A hand gesture recognition technique for human-computer interaction 

      Kılıboz, N. Ç.; Güdükbay U. (Academic Press, 2015)
      We propose an approach to recognize trajectory-based dynamic hand gestures in real time for human-computer interaction (HCI). We also introduce a fast learning mechanism that does not require extensive training data to ...
    • Implementing the Han-Kobayashi scheme using low density parity check codes over Gaussian interference channels 

      Sharifi S.; Tanc, A. K.; Duman, T. M. (Institute of Electrical and Electronics Engineers Inc., 2015)
      We focus on Gaussian interference channels (GICs) and study the Han-Kobayashi coding strategy for the two-user case with the objective of designing implementable (explicit) channel codes. Specifically, low-density parity-check ...
    • Improved graph-entropy bound for perfect hashing 

      Arikan, E. (IEEE (Institute of Electrical and Electronics Engineers), 1994)
      We give an improved graph-entropy bound on the size of families of perfect hash functions. Examples are given illustrating that the new bound improves previous bounds in several instances.
    • Interframe differential coding of line spectrum frequencies 

      Erzin, E.; Çetin, A. E. (IEEE, 1994)
      Line spectrum frequencies (LSF's) uniquely represent the linear predictive coding (LPC) filter of a speech frame. In many vocoders LSF's are used to encode the LPC parameters. In this paper, an inter-frame differential ...
    • Joint source-channel coding and guessing 

      Arikan Erdal, Merhav Neri (IEEE, Piscataway, NJ, United States, 1997)
      We consider the joint source-channel guessing problem, define measures of optimum performance, and give single-letter characterizations. As an application, sequential decoding is considered.
    • Joint source-channel coding and guessing with application to sequential decoding 

      Arikan, E.; Merhav, N. (Institute of Electrical and Electronics Engineers, 1998-09)
      We extend our earlier work on guessing subject to distortion to the joint source-channel coding context. We consider a system in which there is a source connected to a destination via a channel and the goal is to reconstruct ...
    • Large deviations of probability rank 

      Arikan, E. (2000)
      Consider a pair of random variables (X,Y) with distribution P. The probability rank function is defined so that G(x|y) = 1 for the most probable outcome x conditional on Y = y, G(x|y) = 2 for the second most probable ...
    • Lineking: coffee shop wait-time monitoring using smartphones 

      Bulut, M. F.; Demirbas, M.; Ferhatosmanoglu, H. (Institute of Electrical and Electronics Engineers, 2015)
      This article describes LineKing, a crowdsensing system for monitoring and forecasting coffee shop line wait times. LineKing consists of a smartphone component that provides automatic and accurate wait-time detection, and ...
    • LineKing: Crowdsourced line wait-time estimation using smartphones 

      Bulut, M.F.; Yilmaz, Y.S.; Demirbas, M.; Ferhatosmanoglu, N.; Ferhatosmanoglu H. (2013)
      This paper describes the design, implementation and deployment of LineKing (LK), a crowdsourced line wait-time monitoring service. LK consists of a smartphone component (that provides automatic, energy-efficient, and ...
    • A multiresolution nonrectangular wavelet representation for two-dimensional signals 

      Çetin, A. E. (Elsevier, 1993)
      In this paper, a new multiresolution wavelet representation for two-dimensional signals is described. This wavelet representation is based on a nonrectangular decomposition of the frequency domain. The decomposition can ...
    • On the reliability exponent of the exponential timing channel 

      Arikan, E. (IEEE, 2002)
      We determine the reliability exponent E(R) of the Anantharam-Verdú exponential server timing channel with service rate μ for all rates R between a critical rate R c = (μ/4) log 2 and the channel capacity C = e -1μ. For ...
    • Prediction of protein subcellular localization based on primary sequence data 

      Özarar, M.; Atalay V.; Atalay, R.Ç. (2004)
      Subcellular localization is crucial for determining the functions of proteins. A system called prediction of protein subcellular localization (P2SL) that predicts the subcellular localization of proteins in eukaryotic ...
    • Separating nut-shell pieces from hazelnuts and pistachio kernels using impact vibration analysis 

      Habiboǧlu, Y.H.; Sevimli, R.A.; Çetin, A.E.; Pearson, T.C. (2013)
      In this article nut-shell pieces are separated from pistachio kernels and hazelnut kernels using impact vibration analysis. Vibration signals are recorded and analyzed in real-time. Mel-kepstral feature parameters and line ...
    • A smartphone based surface plasmon resonance imaging (SPRi) platform for on-site biodetection 

      Guner, H.; Ozgur, E.; Kokturk, G.; Celik, M.; Esen, E.; Topal, A. E.; Ayas, S.; Uludag, Y.; Elbuken, C.; Dana, A. (Elsevier, 2017)
      We demonstrate a surface plasmon resonance imaging platform integrated with a smartphone to be used in the field with high-throughput biodetection. Inexpensive and disposable SPR substrates are produced by metal coating ...
    • Synchronization and chaotic masking scheme based on occasional coupling 

      Morgül, Ö. (American Physical Society, 2000)
      Synchronization and a related message transmission scheme using synchronized chaotic systems was presented for discrete-time systems. The scheme was based on occasional coupling of transmitter and receiver systems. The ...
    • Theoretical limits for estimation of vital signal parameters using impulse radio UWB 

      Gezici, S.; Sahinoglu, Z. (2007)
      In this paper, Cramer-Rao lower bounds (CRLBs) for estimation of vital signal parameters, such as respiration and heart-beat rates, using ultra-wideband (UWB) pulses are derived. In addition, a simple closed-form CRLB ...