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Modern cars comprise tens of electronic control units, serving for various purposes like entertainment, driver's comfort or occupant protection. To connect these networked embedded systems inside the car, widespread bus systems like CAN or FlexRay are used, each one offering projecting abilities and specific limitations for certain application areas. In order to point out the suitability of a certain...
Multi-sensor data fusion systems for environment perception in the automotive domain are regarded as a promising instrument for obtaining dependable vehicular context information. Sensor data from remote sensing devices like radar or laserscanners is transmitted via intra-car networks to electronic control units (ECU) that enable an intelligent, context sensitive vehicle behavior depending on the...
Applications of modern automotive electronics often rely on data from various electronic control units (ECUs). A widespread communication system to enable the data exchange is the Controller Areas Network (CAN), implementing a priority-based media access scheme. Assessing important aspects of data transmission is done in both the early phase of system design by means of simulation or analytical evaluation...
Modern cars comprise tens of electronic control units, interconnected via automotive bus systems towards a specific system-of-systems inside the vehicle. Safety-relevant applications which are realized by these networked embedded controllers require a sophisticated process of system design. The appropriate choice of communication infrastructure and parameters at an early stage of system development...
Car manufacturers, research institutions and governments are challenged by decreasing the number of road traffic fatalities in spite of rapidly increasing traffic volumes. One approach is to enhance the ldquointelligencerdquo of modern cars in anticipating dangerous driving situations. Besides wireless communications with the traffic environment, context perception enabled by well-known technologies...
The application of environment sensor systems in modern - often called ldquointelligentrdquo - cars is regarded as a promising instrument for increasing road traffic safety. Based on a context perception enabled by well-known technologies such as radar, laser or video, these cars are able to detect threats on the road, anticipate emerging dangerous driving situations and take proactive actions for...
Modern cars comprise various driver assistance applications which depend on reliable surveillance of the vehiclepsilas environment. Therefore, sensors known from aviation and military - like radar or laser - are combined to multi-sensor systems and employed to provide specific observation data. The actual choice of the single sensors depends on the scope of the application and in turn has a considerable...
Modern cars comprise a multitude of electronic features which are implemented in tens of communicating control units. To connect these in-car embedded systems, the CAN bus offers a sustainable performance, hence it is used as a widespread communication infrastructure, even for safety critical applications. However, CAN media access is priority based and performed competitive and non-preemptive. Thus,...
The goal of this work is to analyze the feasibility of a peer-to-peer file sharing technique in mobile cellular environments, taking into account key characteristics and peculiarities of the UMTS radio access network (UTRAN). The concept is referred here to as mobile-to-mobile (m2m). Our research efforts explore the performance benefits of m2m file sharing applications in UMTS networks in terms of...
This paper is a sequel of previous work, in which we proposed a concept based on direct mobile-to-mobile (m2m) data exchange on uplink channels for distribution of large popular content in dynamic wireless environment. We showed the feasibility and performance benefit of m2m file sharing applications in terms of thereby released overall downlink capacity in UTRA-FDD systems, where multiple m2m user...
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