Closed loop power control system in mobile communication system using satellite

PURPOSE: A closed loop power control system in the mobile communication system using a satellite is provided to efficiently execute the closed loop power control between a base station and a mobile communication terminal. CONSTITUTION: A received signal received through an antenna from a mobile communication terminal is converted into a low frequency through an RF device(21). An analog/digital converter(22) converts the low frequency converted signal into a digital data which is inputted to a CDMA(Code Division Multiple Access) demodulator(23). The CDMA demodulator(23) multiplies the digital data by a CDMA code and inputs it to an interleave/modulator(26). As the interleave/modulator(26) executes deinterleaving for the inputted data and inputs it to a bit ratio demodulator(25), a data transmitted from a transmitting side is outputted from the bit ratio demodulator(25).