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Without requiring pre-fixed infrastructure, Vehicular Ad Hoc networks (VANETs) allow drivers to exchange information and access variant services in real-time manner. While achieving significant flexibility and convenience, dynamic network topology is also the source of challenges that invalidate most of well-designed protocols. To address this problem, in this paper, we propose a novel scheme called...
The paper presents a light weight technique to detect the Denial of Service (DoS) behavior applied by malicious users in Internet-connected vehicles using Wi-Fi to access the Internet via hotspots installed on the roads. Malicious nodes manipulate the IEEE 802.11 DCF standards to illegally gain extra throughput and increase the probability of having a successful packet transmission on the expense...
This article shows that the non-coherent detector for random signals which maximizes the generalized likelihood function is the same as the detector that maximizes the probability of correct detection at any specified false alarm probability by deriving the exact statistics for |Y|p (where Y is a Gaussian random variable and p is a positive real number) for the following two cases: (i) sample size...
This article proposes several new and improved energy detectors for detecting unknown deterministic signals perturbed by zero-mean Gaussian noise and/or fading. In contrast to the conventional total energy detector (that computes the signal energy by summing the square of all time-domain signals), we first partition the time-domain samples in pairs and then combine the signal energy estimates from...
We propose a scheme to evaluate driver behaviors by a vision-based head pose estimation method. In our project, we are investigating a collaborative safety mechanism based on the mutual sharing of driver information (attention and performance) in daily situations. The analysis of driver behaviors based on a non-contact type of measurement is one key issue in our mechanism. In this paper, we describe...
In the overall effort of reducing CO2 emissions especially in large cities vehicular communications can play an important role. Intelligent transportation systems, which aim to use information and communication technology are considered to be a major factor in this effort. Eco-routing is already used to suggest most environmental-friendly routes in order to reduce overall mileage and CO2 emissions...
This paper addresses the problem of locating a handheld device (a smartphone or a tablet) inside a car. Based on the location of the device in the car, one can determine whether the device is being used by a driver or not so that a software can enable or disable certain features and functions of the device to reduce the distraction to the driver. We provide several predesigned audio signals to play...
Platoon formation has been identified as a promising framework in developing intelligent transportation systems. By autonomous or semi-autonomous vehicle control and inter-vehicle coordination, an appropriately managed platoon can potentially offer enhanced safety, improved highway utility, increased fuel economy, and reduced emission. This paper is focused on quantitative characterization of impact...
Traffic congestion is considered one of the most important problems of road transportation. The concept of Intelligent Transportation System (ITS) has been introduced to improve the efficiency of the traffic flow. The autonomous vehicle technology is slowly becoming a reality, alongside wireless communication technology, which is becoming a major role in vehicle communication. Wireless communication...
This article studies Junction-based Model Predictive Control (JMPC) in urban traffic light control. The entire traffic system is decomposed into junction-based subsystems with their own MPC controllers based on a frequently and regularly initialized difference equation (FRIDE). These MPC controllers consider the control effects on adjacent subsystems and inputs effects from adjacent subsystems, which...
This paper proposes a model which incorporates the traveler dynamics into the cell transmission model (CTM) by decoupling the travel demand from the traffic demand, in order to simulate traffic dynamics in a more controllable way. The model takes travelers as the source of the traffic load and formulates the relationship between these two demands mathematically. With the proper design, the model can...
The US Department of Transportation (USDOT) owns and operates a major on-road test facility in Southeast Michigan dedicated to the development and testing of the next generation of Intelligent Transportation Systems — connected vehicle technologies, standards and applications. Over the course of the next 12 months, this facility will undergo significant upgrades with the intent of supporting the next...
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