| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a synchronizing device, an inverse diffusion device and a reception device of a spectral diffusion communication system, and a synchronizing method, an inverse diffusion method and a reception method of the spectral diffusion communication system, by which a time for removing a carrier is eliminated, a synchronization establishment time can be shortened, a time from inverse diffusion to demodulation can be shortened and an arithmetic operation or a circuit structure can be simplified by performing synchronization by using a reception signal including the carrier, directly inversely diffusing the reception signal including the carrier and demodulating it. <P>SOLUTION: The device is provided with a delay means calculating a product with a reception-side diffusion code while the reception signals including the carriers are sequentially shifted, a displacement comparing means adding the comparison result of the displacement of a delay output of the delay means in a range of a prescribed period and a synchronizing means retrieving the minimum value of a displacement output of the displacement comparing means and synchronizing the reception-side diffusion code with the reception signal with the position of the minimum value as a synchronization point. <P>COPYRIGHT: (C)2006,JPO&NCIPI |
