Results for "Behrad Toghi"

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MNIST Dataset Classification Utilizing k-NN Classifier with Modified Sliding-window MetricSep 18 2018Mar 12 2019The MNIST dataset of the handwritten digits is known as one of the commonly used datasets for machine learning and computer vision research. We aim to study a widely applicable classification problem and apply a simple yet efficient K-nearest neighbor ... More
A Stochastic Hybrid Framework for Driver Behavior Modeling Based on Hierarchical Dirichlet ProcessNov 15 2017Jul 11 2018Scalability is one of the major issues for real-world Vehicle-to-Vehicle network realization. To tackle this challenge, a stochastic hybrid modeling framework based on a non-parametric Bayesian inference method, i.e., hierarchical Dirichlet process (HDP), ... More
Analysis of Distributed Congestion Control in Cellular Vehicle-to-everything NetworksMar 29 2019Cellular Vehicle-to-everything (C-V2X) communication has been proposed in the 3rd Generation Partnership Project release 14 standard to address the latency and reliability requirements of cooperative safety applications. Such applications can involve ... More
Intelligent Wide-band Spectrum ClassifierApr 12 2019We introduce a new technique for narrow-band (NB) signal classification in sparsely populated wide-band (WB) spectrum using supervised learning approach. For WB spectrum acquisition, Nyquist rate sampling is required at the receiver's analog-to-digital ... More
V2X System Architecture Utilizing Hybrid Gaussian Process-based Model StructuresMar 04 2019Mar 06 2019Scalable communication is of utmost importance for reliable dissemination of time-sensitive information in cooperative vehicular ad-hoc networks (VANETs), which is, in turn, an essential prerequisite for the proper operation of the critical cooperative ... More
Multiple Access in Cellular V2X: Performance Analysis in Highly Congested Vehicular NetworksSep 07 2018Oct 27 2018Vehicle-to-everything (V2X) communication enables vehicles, roadside vulnerable users, and infrastructure facilities to communicate in an ad-hoc fashion. Cellular V2X (C-V2X), which was introduced in the 3rd generation partnership project (3GPP) release ... More
Real-Time Hardware-In-the-Loop Emulation Framework for DSRC-based Connected Vehicle ApplicationsMay 22 2019The rapid growth of connected and automated vehicle (CAV) solutions have made a significant impact on the safety of intelligent transportation systems. However, similar to any other emerging technology, thorough testing and evaluation studies are of paramount ... More
MNIST Dataset Classification Utilizing k-NN Classifier with Modified Sliding-window MetricSep 18 2018Nov 16 2018The MNIST dataset of the handwritten digits is known as one of the commonly used datasets for machine learning and computer vision research. We aim to study a widely applicable classification problem and apply a simple yet efficient K-nearest neighbor ... More
A Driver Behavior Modeling Structure Based on Non-parametric Bayesian Stochastic Hybrid ArchitectureJul 11 2018Heterogeneous nature of the vehicular networks, which results from the co-existence of human-driven, semi-automated, and fully autonomous vehicles, is a challenging phenomenon toward the realization of the intelligent transportation systems with an acceptable ... More
V2X System Architecture Utilizing Hybrid Gaussian Process-based Model StructuresMar 04 2019Scalable communication is of utmost importance for reliable dissemination of time-sensitive information in cooperative vehicular ad-hoc networks (VANETs), which is, in turn, an essential prerequisite for the proper operation of the critical cooperative ... More
Robust Cooperative Relay BeamformingMar 06 2017In this paper, the robust distributed relay beamforming problem is solved using the worst case approach, where the problem solution has been involved because of the effect of uncertainty of channel knowledge on the quality of service (QoS) constraints. ... More
All-dielectric phase-change reconfigurable metasurfaceApr 05 2016Aug 03 2016We harness non-volatile, amorphous-crystalline transitions in the chalcogenide phase-change medium germanium antimony telluride (GST) to realize optically-switchable, all-dielectric metamaterials. Nanostructured, subwavelength-thickness films of GST present ... More
All-dielectric free-electron-driven holographic light sourcesJul 15 2018Dec 13 2018It has recently been shown that holographically nanostructured surfaces can be employed to control the wavefront of (predominantly plasmonic) optical-frequency light emission generated by the injection of medium-energy electrons into a gold surface. Here ... More
Holistic Approach for Fault-Tolerant Network-on-Chip based Many-Core SystemsJan 26 2016In this paper we describe a holistic approach for Fault-Tolerant Network-on-Chip (NoC) based many-core systems that incorporates a System Health Monitoring Unit (SHMU) which collects all the fault information from the system, classifies them and provides ... More
Optically Reconfigurable Photonic DevicesAug 16 2015Oct 18 2015Optoelectronic components with adjustable parameters, from variable-focal-length lenses to spectral filters that can change functionality upon stimulation, have enormous technological importance. Tuning of such components is conventionally achieved by ... More
Femtosecond laser inscription of nonlinear photonic circuits in Gallium Lanthanum Sulphide glassJun 15 2018Aug 27 2018We report on femtosecond laser writing of single mode optical waveguides in chalcogenide Gallium Lanthanum Sulphide (GLS) glass. A multiscan fabrication process was employed to create waveguides with symmetric single mode guidance and low insertion losses ... More
n-Type Chalcogenides by Ion ImplantationNov 20 2014Carrier-type reversal to enable the formation of semiconductor p-n junctions is a prerequisite for many electronic applications. Chalcogenide glasses are p-type semiconductors and their applications have been limited by the extraordinary difficulty in ... More