DEVELOPMENT OF MOBILE COMMUNICATION SYSTEM FOR RACS. IN: CONFERENCE RECORD OF PAPERS PRESENTED AT THE FIRST VEHICLE NAVIGATION AND INFORMATION SYSTEMS CONFERENCE, TORONTO, ONTARIO, CANADA - SEPTEMBER 11-13, 1989
Yoshizo Shibano, T. Norikane, Takayuki Iwai, Mamoru Carlos Yamada, S. Tsurui · 1989
The development of Road/Automobile Communication System (RACS) has been studied and developed. Inductive radio system and Microwave system are potent candidates for RACS. Inductive radio system has 4 lane X 4 m of communication range with bit error rate characteristic of 5 X 0.00001 - 0.000006 and maximum data volume attainable at a beacon is 460 b when an automobile is traveling with the speed of 100 km/h. Microwave system using 2.5 GHz frequency band has 5 lane X 60 m of communication range and maximum data volume of 400 kb with transmission data rate of 512 kbps. By deploying PSK/Reverse Amplitude Modulation Method, the system attained the ability to determine the position of automobiles very accurately and to detect moving direction of automobiles. The microwave system has very high potential for future applications and will be implemented in Japan.