| 摘要 |
The invention relates to a radio communication system for transmission of data between mobile units and/or fixed units in connection with monitoring and controlling road traffic, particularly data communication from car to car and fixed cell to car. A problem with this application is fading which arises through interference between the direct wave and a single reflected wave from the ground. According to the invention, the fading minima are eliminated or reduced by using a nominal carrier frequency in the GHz range together with at least one diversity frequency, whereby the signals are combined using diversity techniques. |
