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Sökning: L773:9781424472857

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  • de Freitas, Edison Pignaton, et al. (författare)
  • UAV relay network to support WSN connectivity
  • 2010
  • Ingår i: 2010 International Congress on Ultra Modern Telecommunications and Control Systems and Workshops. - Piscataway, N.J. : IEEE Press. - 9781424472857 ; , s. 309-314
  • Konferensbidrag (refereegranskat)abstract
    • An important problem in Wireless Sensor Networks (WSN) is the occurrence of failures that lead to the disconnection of parts of the network, compromising the final results achieved by the WSN operation. A way to overcome such problem is to provide a reliable connection to support the connectivity via other types of nodes that communicate with the sensor nodes. This paper proposes the usage of a network composed by Unmanned Aerial Vehicles (UAVs) as a relay network to guarantee the delivery of data produced by WSN nodes on the ground to the users. Results from simulations of the proposed technique are provided and discussed.
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3.
  • Kihl, Maria, et al. (författare)
  • Simulation modelling and analysis of a realistic radio channel model for V2V communications
  • 2010
  • Ingår i: Proceedings of ICUMT - International Congress on Ultra Modern Telecommunications and Control Systems. - 2157-0221. - 9781424472857 ; , s. 981-988
  • Konferensbidrag (refereegranskat)abstract
    • Realistic radio channel models are crucial for the success of vehicle-to-vehicle (V2V) system investigations. In this paper, we summarize the important parameters for V2V channel models and describe relevant measurement campaigns. Also, we develop and evaluate an ns-3 simulation model of a realistic V2V channel model that is based on measurements in Sweden. The channel model incorporates the effects of obstacles between the transmitter and receiver. We show that the resulting pathloss is very different compared with available models.
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