| 摘要 |
PURPOSE:To effectively utilize radio wave resources by setting the number of frequencies of a radio wave used for repeating transmission to one, and also, to save trouble of an adjustment work, etc., by omitting the direction adjustment of an antenna, and moreover, to prevent cut-off and a ghost, etc., of the radio wave from being generated even if a radio wave obstacle, etc., enter onto a radio wave transmission line. CONSTITUTION:By a transmission system being strong against a multi-path such as a frequency orthogonal multiplex digital transmission system, etc., for transmitting a digital signal by using plural orthogonal carrier waves, a radio wave from a moving body 1 is guided to each receiving point 3 directly and through each retransmitting equipment 2, and transmitted to a program producing point 4, etc. |
