DS/SS INTER-VEHICLE COMMUNICATION EXPERIMENTS IN 2.4 GHZ ISM BAND
Lachlan B. Michael · 1998
In this paper inter-vehicle communication experiments made with commercially available wireless direct-sequence spread spectrum#DS#SS# 2.4 GHz LAN (local area network) modems. Using this ISM (industrial, scientific and medical) band LAN, a simple twovehicle communication network was established. The system worked well when line-of-sight communication was possible, up to several hundred meters on local roads. The performance of the system was reduced when line-of-sight (LOS) communication was obscured, such as when vehicles turned corners, and also when multipath was prevalent, such as in tunnels. On the highway, small packet loss results were obtained at ranges up to 500 m, even without direct line-of-sight communication. The performance was much better than on the local roads. These experiments show that simple inter-vehicle communication with the use of existing LAN modems possible, and therefore can be realized at low cost.