CLOSED LOOP POWER CONTROL SYSTEM IN MOBILE COMMUNICATION SYSTEM USING SATELLITE

摘要

Purpose: the closed loop power control system in the mobile communication system using an artificial satellite, which is provided between a base station and a mobile communication terminal, efficiently performs closed loop power control. Construction: one low frequency is converted by a RF devices (21) by the reception signal of a strip antenna from the receiving of a mobile communication terminal. Low frequency conversion signal is converted to a digital data by one digital-analog convertor (22), is input into CDMA (CDMA) demodulator (23). CDMA demodulators (23) increase digital data by a CDMA codes and input it to boundary/modulator (26). Because boundary/modulator (26) executes the de-interlacing for the data of input and inputs it to some ratio demodulators (25), exported from the data that a transmitting side is transmitted from bit error rate demodulator (25).