Downlink receiving and sending conversion adaptive control system for TD-SCDMA repeater

The utility model relates to an uplink/downlink transceiver transformation adaptive control system for TD-SCDMA repeater station. The input signals of an energy detecting unit are acquired from the end of a donor antenna through coupling and the output of the energy detecting unit is directly connected with a conversion control logic unit; the conversion control logic unit outputs various needed transceiver transformation control signals, wherein a phase error estimation module in the conversion control logic unit estimates the phase error of the time slot switching timing reference pulse outputted by a feature window matching and extracting module and the local time slot switching timing pulse outputted by a local timing generation module and outputs the 'plus' and 'minus' signals of the phases to the local timing generation module so as to adjust the phase and the cycle of the local time slot switching timing pulse, and outputs the phase-locking signals when the phase error meets the requirement. The beneficial effects of the utility model are that: 1. the detection control unit has a single-chip structure and the cost is low; 2. the hardware CPLD is used to realize all functions and the real-time performance is good; 3. the uplink/downlink time slot of the adaptive base station can be configured flexibly.