Wyniki 1-1 spośród 1 dla zapytania: authorDesc:"Erik G. Ström"

Vehicular communication: state-of-the-art and remaining challenges Komunikacja między pojazdami: stan obecny i nowe wyzwania DOI:10.15199/59.2015.4.2

  Wireless technologies are heavily used in today's vehicles and transport system. Wireless system are quite diverse, ranging from radar to navigation to communication, from short-range applications (Bluetooth, wireless keys, NFC) to long-range satellite communication (SDAR, GNSS ), from high-data rate 4G and Wi-Fi communications for infotainment to 802.11p systems for lowlatency, high reliability vehicle-to-vehicle and vehicle-to-roadside communication for traffic safety and efficiency applications. An emerging application is to connect on-board vehicle sensors with wireless systems, e.g., based on IEEE 802.15.4. As an example, a modern car is equipped with close to 40 antennas for wireless systems operating at frequencies from about 125 kHz to close to 100 GHz, some 100 electronic control units (computers), and 2 km of wiring. The reason for this is simple: wireless enables very useful applications for the customer (infotainment, convenience, driver support, safety, automatic driving), vehicular OEMs (fleet management, software upgrades), and society (traffic efficiency). This trend will continue in the future: new applications will require higher performance from wireless systems (pull) and better wireless systems will enable new applications (push). An important class of applications are those enabled by cooperative intelligent transport systems (C-ITS), i.e., systems in which vehicles exchange messages wirelessly to increase the awareness horizon of the driver beyond what can today be achieved with in-vehicle line-of-sight technologies such as radars and camera systems. Hence, C-ITS services are enabled by vehicle-to-vehicle (V2V) and vehicle-to-roadside-infrastructure (V2I) wireless communication. This communication, collectively referred t[...]

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