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In this paper we present a recently developed speed advisory system for ITS applications. A real vehicle embedded in a large scale SUMO simulation is used to demonstrate the efficacy of such a system.
A modern emergency vehicle is the combination of different technologies and single vehicle can contain dozens of user interfaces (UI). Laurea University of Applied Sciences launched on 2010 Mobile Object Bus Interaction-project (MOBI) that defines user requirements for designing emergency vehicles, finding solutions to decrease power consumption, experimenting possibilities to create common ICT-architecture...
To achieve location privacy for Location-Based Services (LBS) in the Vehicular Ad-hoc Network (VANET) environment, many pseudonym changing mechanisms have been proposed in the literature. Although some exiting mechanisms, such as AGE, SLOW, SPOT and can achieve high security level, yet much overhead is incurred due to a large number of pseudonym changes. While performing pseudonym changes, the services...
Rechargeable batteries are widely used in many portable electronic products and consumer devices. This paper presents a unitized charging and discharging battery management system (UCD BMS) with distributed battery units allowing some battery units to be discharged their energy running the vehicle, while some other units are charged from the energy harvesting with photovoltaics or other technologies...
The growth of the Electric Vehicle (EV)'s market is strongly conditioned by the availability of cost-effective and reliable charging infrastructures. In the current state of the technology, the limited capacity of the batteries limits EV's market to urban moves. The rapid deployment of charging stations in urban areas is a real challenge. In this paper, we introduce an original approach consisting...
This paper analyzes the performance of an energy detector for single and diversity antenna receptions. It starts by providing closed-form expressions to a class of semi-infinite integrals which include the generalized Marcum Q-function and its extension, the Nuttal Q-function as special cases. Based on these unified frameworks, novel analytical expressions are firstly derived for the average detection...
The first implementation of vehicle-to-grid (V2G) technology utilizing Society of Automotive Engineers (SAE) compliant standards for DC Fast Charging was recently deployed on a U.S. Army base and certified as operational. We discuss the system deployed and the capabilities it provides, focusing especially on the energy aggregation system. We further explain why this is of significant importance in...
The paper presents a methodology of coupling serial hybrid urban buses, propagating the location of forced stops as input for controlling the motor generator set in a strategic energy management systems. The hypothesis postulates that using data from vehicles driving head-to-head — adding information from other telematics services like intersection controllers — helps improving fuel economy. At first...
Mobile devices offer a unique opportunity for integration with daily life functions on a unified platform. In spite of market penetration, mobile devices have not made any revolutionary impact on interfacing with the driving functions of an automobile. The primary challenge for this deficiency is the lack of unifying hardware/software platforms and barriers that exists between popular mobile ecosystems...
In this paper, sensing performance of an energy detector (ED) for local and collaborative detection scenarios is investigated in unreliable environments dominated by multipath fading and shadowing effects. The channel is modeled by using KG distribution for Nakagami-m multipath fading and lognormal shadowing. Novel analytical expressions are firstly derived for the average detection probability for...
Advanced Driving Assistance Systems (ADAS) for improving vehicular safety are increasingly network based, with approaches that use vehicle to vehicle (V2V) and vehicle to infrastructure (V2I) communication. Most current proposals for V2V and V2I use DSRC and a dedicated infrastructure of road side units (RSUs) for the V2I scenarios. Here, the technical feasibility of an alternative architecture is...
In this paper, we will propose a new methodology for performance modeling of IEEE 802.11p medium access control (MAC) sub-layer in broadcast mode. In most of the current works, it is assumed that the number of contending nodes is deterministic and constant. However, in vehicular ad hoc networks, we can observe a kind of uncertainty in number of contending vehicles, which try to get access to the shared...
Recently, a “Separate Receive and Training Antenna” technique has been proposed to provide energy efficient and robust wireless downlink data transmission towards antennas placed upon fast moving vehicles. Energy efficiency is attained thanks to Large Multiple Input Single Output Beamforming. Robustness to beamforming mispointing at high speed is obtained by using the recent “Predictor Antenna” concept...
This paper proposed a simplified scheme of Group Vertical Handover (GVHO) decision-making for multiple mobile nodes (MNs) and multiple target base stations (target networks). In the GVHO situation, there are multiple MNs and multiple target networks. Since there are so many cases of matching of MNs and target networks, high calculating load is required for determining the best case of matching. Our...
Traffic congestion in urban areas is a severe problem in many cities around the world. Conventional infrastructure-based solutions to detect traffic congestion, such as surveillance cameras and road surface inductive loops, have the limitations of high deployment costs and limited coverage. In recent years, due to the popularity of mobile devices, solutions that do not require pre-deployed infrastructure...
To achieve a mass market acceptance of electric mobility, the development of personal safety mechanisms, authorization methods and asset management of charging infrastructure requires standardized ICT protocols. For all these issues protocols have been developed and a roll-out of Electric Vehicles (EV) is feasible. To increase the market penetration of e-mobility, EVs can take part in value added...
Ever growing demand for wireless services and a dearth of quality spectrum requires more efficient use of available bandwidth. Cross-layer design has the potential for more efficient system design than is possible considering each layer in isolation. In this article, we consider goodput optimization of pilot-symbol assisted modulation with orthogonal frequency division multiplexing (PSAM-OFDM). Here...
We address the problem of adaptive sampling and estimation of non-wide sense stationary vehicle to vehicle (V2V) wireless channels. In the proposed solution the transmitter utilizes the current channel statistics to dynamically change the number of pilot symbols in every radio frame. The receiver first decodes the location of the pilot symbols and then selects channel estimation filter weights to...
Integration of electric vehicles (EVs) in distribution circuits introduces challenges such as increase in load demand and voltage drops during peak load hours. These concerns call for a study to evaluate impacts of EV charging on primary and secondary voltages. Hence the objective of the paper is to present practical approaches in carrying out such a study. The paper begins by laying out criteria...
Equalization in multipath fading environment offers the highest computational cost in a mobile receiver design. Since its inception, Artificial Neural Network (ANN) has been accepted for widespread applications in various fields of signal processing. ANN, with its ability to discriminate nonlinear decision boundaries, establish nonlinear functional relationship between input and output. Efforts have...
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