| 摘要 |
PURPOSE:To provide a spread spectrum communication system which is made to prevent a transmission wave from interfering a reception-side by hopping and which is used for a bidirectional communication system. CONSTITUTION:A diffusion code system generator 11, a frequency synthesizer 13 on a transmission-side and frequency synthesizer 14 on the reception-side, which receive a diffusion code system outputted from the diffusion code system generator 11 and generate a frequency detached by a prescribed frequency, a synchronous circuit 21 inputting a reception signal and a switch 23 which is changed over to an on-state at the time of reception and supplies a clock and a synchronizing signal, which are outputted from the synchronous circuit 21 to the diffusion code system generator 11, are provided. Then, the transmission frequency is hopped in parallel detached from the reception frequency by the prescribed frequency. |
