| 摘要 |
PROBLEM TO BE SOLVED: To allow the system to take synchronization easily and to make interval between output data and between clock signals constant. SOLUTION: A spread code modification device 8 adds a non-modulation part equivalent to one tip to 11-chips of spread codes. Multipliers 11-21 multiply parallel signals P1-P6 with the spread code to which the non-modulation part is added. Since the non-modulation part equivalent to one tip is added to the 11 tips of spread codes, a difference of a delay time is made identical in delay elements 23-33. Thus, the interval of correlation spikes outputted sequentially from a collilator of a receiver is made constant. Thus, the correlation synchronization circuit and the processing thereat are simplified and ease of synchronization is taken. Moreover, the interval between output data and the interval between clock signals are made constant. |
