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Performance analysis of turbo codes over Nakagami-m fading channels with impulsive noise
(IEEE, 2007)
The statistical characteristics of impulsive noise differ greatly from those of Gaussian noise. Hence, the performance of conventional decoders, optimized for AWGN channels is not promising in non-Gaussian environments. ...
A comparison study on sound defects of Bilkent Amphitheatre in terms of intelligibility of the speech
(2007)
The 4000 seated multi-purpose hall Bilkent Amphitheater is a semi-closed amphitheater with a large volume of 90,000 m3.At the beginning, the amphitheater was designed only for open-air performances. Afterwards it was decided ...
Negative phase advance in polarization independent, multi-layer negative-index metamaterials
(Optical Society of American (OSA), 2008)
We demonstrate a polarization independent negative-index metamaterial (NIM) at microwave frequencies. Transmission measurements and simulations predict a left-handed transmission band with negative permittivity and negative ...
Creating crowd variation with the OCEAN personality model
(IFAAMAS, 2008-05)
Most current crowd simulators animate homogeneous crowds, but include underlying parameters that can be tuned to create variations within the crowd. These parameters, however, are specific to the crowd models and may be ...
Theoretical limits for estimation of vital signal parameters using impulse radio UWB
(IEEE, 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 ...
Three-dimensional monochromatic light field synthesis with a deflectable mirror array device
(SPIE, 2006)
We investigated the problem of complex scalar monochromatic light field synthesis with a deflectable mirror array device (DMAD). First, an analysis of the diffraction field produced by the device upon certain configurations ...
Circular arrays of log-periodic antennas for broadband applications
(IEEE, 2006)
Circular arrays of log-periodic (LP) antennas are designed for broadband applications. A sophisticated electromagnetic simulation environment involving integral equations and fast solvers is developed to analyze the LP ...
Modeling of remote sensing image content using attributed relational graphs
(Springer, 2006-08)
Automatic content modeling and retrieval in remote sensing image databases are important and challenging problems. Statistical pattern recognition and computer vision algorithms concentrate on feature-based analysis and ...
Reconstruction of computer generated holograms by spatial light modulators
(Springer, 2006)
Computer generated holograms generated by using three different numerical techniques are reconstructed optically by spatial light modulators. Liquid crystal spatial light modulators (SLM) on transmission and on reflection ...
Differentiated ABR: a new architecture for flow control and service differentiation in optical burst switched networks
(IEEE, 2005)
In this paper, we study a new control plane protocol, called Differentiated ABR (D-ABR), for flow control and service differentiation in optical burst switched networks. Using D-ABR, we show using simulations that the ...