| 摘要 |
<p>PROBLEM TO BE SOLVED: To provide a synchronization circuit by which an excellent communication characteristic is maintained at all times independently of a communication state in the digital modulation system radio communication equipment. SOLUTION: A cyclic redundancy check(CRC) criterion to discriminate a communication state is stored in a latch circuit 1. Based on an output of the latch circuit 1 and a stored clock, a gate circuit 3 generates a clock used for a storage circuit 4 as follows. When the communication state is excellent, the CRC criterion goes to a high level and the storage circuit 4 stores a state of a bit synchronization update circuit 2 in the case of an excellent reception state. The bit synchronization update circuit 2 is used to take synchronization when the radio communication equipment makes communication with a base station and synchronization processing of a succeeding period is conducted by using the synchronization data of the storage circuit 4 in the excellent reception state as above.</p> |
