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In this paper, error performance analysis of decode and forward (DF) based cooperative vehicular networks with relay selection is considered. All of the links in the system are modeled as cascaded Nakagami-m distributed random variables which provide a realistic description of an intervehicular channel. The performance of virtual noise (VN) based detection technique developed for mitigating error...
Wireless local area networks (WLANs) gained evergrowing importance in public transportation systems where they are selected to reduce installation costs and introduce new services. However, the introduction of a wireless interface in safety critical applications implies different communication protocol analysis and the introduction of a security layer is indispensable to implement defenses from malicious...
In this paper, an adaptive driving assistance system for electric vehicle (EV) charging guiding was developed. In order to make sure EV driving without running out of battery, chargeable driving region was designed to indicate a safe driving region. EV was allowed to reach any positions within the proposed chargeable driving region and was guaranteed to reach at least one charging station with sufficient...
Augmented reality (AR) can enrich intelligent transportation systems by overlaying virtual traffic information on user's view. Pedestrians and drivers using AR applications can read traffic information and keep their eye on roads at the same time without distracting attentions. However, any information displayed on device screens may overlay on moving objects on roads and obstruct user's view which...
Location Based Services require seamless tracking of human or object outdoor/indoor anywhere, everywhere. Based on its location and availability, it should make use of the underlying wireless system it has access to or it could process. In terms of vehicular system also, it requires seamless tracking also in the indoor parking or places where it lacks clear LOS and has to depend upon the widely accessed...
Although the floating car data contains detailed behavior of vehicles, most researches utilizing the floating car data mainly focus on providing link-level, large-scale traffic estimation because raw floating car data usually contains location and speed errors due to the characteristics of on-board sensors such as GPS and tachometers. Such errors are usually vehicle-dependent and considered hard to...
The paper addresses the problem of increasing transportation safety due to usage of new possibilities provided by modern technologies. The proposed approach extends such systems as ERA-GLONASS and eCall via service network composition enabling not only transmitting additional information but also information fusion for defining required emergency means as well as planning for a whole emergency response...
In cognitive radio networks, secondary users must establish a link to exchange control information. Assuming a common control channel (CCC) simplifies the establishment of a link, but the dynamically changing availability of the spectrum makes it difficult to relay on a CCC. This letter presents CHS, Channel Hopping sequences, to establish a link in cognitive radio networks. We proposed synchronous...
Although many countries only now begin to invest in deployment of GSM-Railways (GSM-R) networks, this technology is already obsolete and reveals its significant shortcomings. The most troublesome one is the insufficient number of communication channels offered by GSM-R. This is a major problem obstructing railway operations at big train stations and junctions. Hence, other technologies, such as Long...
Visible Light Communication (VLC) is the technique adopting electromagnetic frequencies in the visible spectrum for free space optical communications. Although its practical use is still at early stages, in the last few years research activities have been exploring different solutions to achieve high data rates and reliable links using common LEDs and light sensors. VLC can be used in a variety of...
Standardization efforts are currently underway to realize the Europe-wide deployment of Smart-Grids. Numerous protocols have already been standardized; each tailored to a distinct application domains. Amongst these, Smart Metering and EV charging have only recently started to converge, and the goal of the PowerUp project has been to advance such convergence. This paper presents the major results from...
Almost every today's smartphone is integrated with many useful sensors. The sensors are originally designed to make the smartphones' user interface and applications more convenient and appealing. These sensors, moreover, are potentially useful for many other applications in different fields. Using smartphone sensors to estimate road roughness condition may be also possible, since many similar sensors...
Drivers errors such as careless and aggressive driving behaviors are one of the key factors contributing to road traffic accidents. It is, therefore, essential that drivers are aware of their actions when they are in control of the wheel responsible for not only their own lives but also passengers and bystanders on the road. Driver monitoring and advanced driver assistance systems have already been...
With the development of wireless network and rapidly increasing requirements for mobile computing, peer-to-peer technology on Mobile IP (Mobile P2P) becomes a new focus. Mobile P2P is a more and more interested topic for live streaming in next generation. However, the direct porting of existing P2P application on Mobile IP is difficult to overcome time-critical limitation. Handover under Mobile IP...
Continuous broadband Internet on trains is at the moment being deployed worldwide but not always profitable. Solely providing internet for travellers will have a negative return on investment. But, different service providers could be interested to share the unused capacity of resources deployed to offer other services. In this way, resources and their costs are shared over several services and revenues...
A High-Speed Railway (HSR) communication system also has its own advantages compared to a conventional cellular system due to the fixed railway infrastructure and a priori known position of the trains. Based on the measurement results and analysis regarding the propagation channels for HSR communications in literature, this paper distinguishes and analyses the permanent and temporary elements affecting...
This paper presents a novel architecture for supporting WSN applications in the field of Intelligent Transportation Systems. Besides the set of the so called CALM ISO-standards for vehicular environments, a low-cost roadside ITS-Station network is proposed. It is based on the Internet of Things paradigm and its applicability at delivering non safety-critical services and applications are evaluated...
In this paper a non-line-of-sight (NLOS) path-loss and fading model developed for vehicle-to-vehicle (V2V) communication at 5.9 GHz is validated with independent and realistic measurement data. The reference NLOS model is claimed to be flexible and of low complexity, and incorporates specific geometric aspects in a closed-form expression. We validated the accuracy of the model with the help of realistic...
In this paper a multiple-input multiple-output (MIMO) simulation model for vehicle-to-vehicle (V2V) communication channels in an urban cross-junction scenario is presented. The model is an extension and modification of an existing T-junction model in the literature. Four propagation processes are considered: line-of-sight (LOS), single bounce reflections from side walls, double bounce reflections...
In this paper we use a set of Modulated Discrete Prolate Spheroidal Sequences (MDPSS) to represent a bandlimited channel in the scenario with scattering from one or more clusters which can be used in both Vehicle to Infrastructure (V2I) or Vehicle to Vehicle (V2V) communication cases. Then we evaluate performance of 2 × 1 Space-Time Transmit Diversity (STTD) system with Alamouti coding and imperfect...
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