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In this paper, we analyzed the reason of communication performance changes depending on the distance in WAVE (Wireless Access in Vehicular Environments) communications. In the wireless communication, down-fade and up-fade points occur by the fading effects. Using the two-ray ground reflection model, we derived formulas to predict the location of these points in LOS (Line Of Sight) environments. In...
Automatic Valet Parking System (AVP) is a system that supports autonomous maneuvering from a traffic lane to free parking slot. In this paper, we propose a hybrid framework using both in-vehicle and infrastructure based system for detecting environment and controlling the vehicle. Using the system, drivers can get off their car, and can monitor/control them in a safe and comfort way with their nomadic...
This paper presents vehicle control system for automatic valet parking with infrastructure sensors. First, we describe the automatic valet parking service system. In the service, vehicle moves autonomously based on sensing data generated by infrastructure sensors. Second, we implement vehicle control system for automatic valet parking. We design hardware and software components focusing on minimizing...
Most safety-related applications targeting at Vehicular Ad-hoc Networks (VANETs) use Vehicle-to-Vehicle (V2V) broadcast method to disseminate safety-related information to all surrounding vehicles. However, the conventional broadcast schemes have the broadcast storm problem which can lead to unbearable transmission delay and packet loss. In this paper, we present an efficient broadcast scheme referred...
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