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In recent years, many researches and developments on ITS have been carried out to solve many problems in road traffic. IVC (Inter-Vehicular Communications) is the key technology to realize the next generation ITS. Vehicles install telecommunication equipments, and exchange safety information directly with each other. The authors have developed Vehicular Collision Avoidance Support System (VCASS) based...
The objective of this paper is to exchange the position information between pedestrians and their nearby vehicles effectively, in order to protect the pedestrians from serious traffic accidents. We deal with direct communications between pedestrians and vehicles. We call this kind of communications as VPEC (vehicule-pedestrian communications). In this paper, we propose a cooperative reflect transmission...
Disastrous accidents (fires, earthquakes, chemical releases, terrorist attacks, indiscriminate gun-shootings, etc.) in local area (urban cities, residential buildings, department stores, etc.) usually result in tragic consequences for people and environments. Such accidents have clearly shown that the necessity for reliable systems supporting evacuation is quite urgent. Particularly choosing safety...
In this paper, a new channel information estimation scheme for multi-route multi-hop networks is discussed. Multi-hop network has received much attention recent years because of its large channel capacity. When the information bit streams are transmitted over multiple routes, a route diversity effect would also be possible. In order to improve the route diversity effect the receiver has to obtain...
In recent years, researches and developments on ITS are carried out to solve many problems in road traffic. IVC (inter-vehicular communications) is the key technology to realize the next generation ITS. Vehicles install telecommunication equipment, and exchange safety information directly with each other. The authors have developed vehicular collision avoidance support system (VCASS) based on IVC...
For reduction in bit errors on wireless channels, we proposed the multi-route coding scheme on multiple routes for wireless multi-hop networks. In this paper, we introduce ARQ to the multi-route coding. In the multi-route coding, the destination node combines and decodes sub packets which are encoded and divided by the source node. The intermediate node relays a sub packet, that is, only a part of...
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