| 摘要 |
<p>PROBLEM TO BE SOLVED: To provide a base station synchronization system of TDMA-TDD system by which the synchronization is ensured so as to reduce a reception error rate even in the case that burst radio waves from other base stations arrive in an overlapping way. SOLUTION: A demodulation circuit 2 demodulates burst data based on an output of a phase detection circuit 1. An RSSI generating circuit 4 outputs an RSSI voltage in response to a reception electric field strength. An edge detection circuit 5 detects it that the RSSI voltage is a preset threshold level or over to generate a digital signal and masks the digital signal with a pulse signal at the end of a CRC discrimination bit outputted from a CRC discrimination circuit 3 for a prescribed period and provides an output of the result. Synchronization means 6, 7 are triggered in an edge timing of the output after masking.</p> |
