| 摘要 |
<p>PURPOSE:To estabilish the synchronism of a PN code sequence for spread among plural communication channels with a simple method even when the period of the PN code sequence for spread is extremely long in a traveling object communication base station using a spread spectral communication system. CONSTITUTION:A feedback shift register 101 is provided independently as an element common to plural channels for communication. In each channel for communication, the PN code sequence for spread can be generated by multiplying a PN code sequence inputted form the feedback shift register 101 by mask information from a mask storage part 103 by a spread code sequence generation circuit 102 without providing a feedback loop. Therefore, the PN code sequence for spread can be generated in the plural channels for communication while synchronized with each other even when the period of the PN code sequence is extremely long.</p> |
