| 摘要 |
PROBLEM TO BE SOLVED: To decrease synchronism capture time between the spread spectrum transmission/reception equipments of a TDD system. SOLUTION: When a reset pulse is generated from a control circuit, it is stored in a D-FF 16 with the fall of an internal clock, and a reset signal is applied at an H level to a PN code generating circuit. The output of the reset signal from the D-FF 16 is stopped with the fall of the next internal clock and the PN code generating circuit is set into initial state with the fall of the reset signal. At the same time, a PN code is generated from the PN code generating circuit by the same internal clock. |
