| 摘要 |
<p>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 bidirectional communication. CONSTITUTION:A diffusion code system generator 11A generating diffusion code systems different by the half value of a diffusion code system length, a frequency synthesizer 13 on a transmission-side receiving one diffusion code system outputted from the diffusion code system generator 11A, a frequency synthesizer 14 on the reception-side receiving the other diffusion code system outputted from the diffusion code system generator 11A and a switch 23 which is changed over to an on-state at the time of reception and which supplies an output clock and a timing signal from a synchronous circuit 21 receiving a reception signal are provided. Transmission/reception frequencies are set to be the same frequency band and they are hopped in parallel detached by a frequency internal which is half a frequency band width.</p> |
