COMMUNICATION TERMINAL, BASE STATION SYSTEM, AND METHOD OF CONTROLLING TRANSMISSION POWER

摘要

An antenna 20 receives signals orthogonal to each other transmitted from different antennas of a base station, and a despreader 202 and a spreader 203 despread the respective received signals using the same spread code used in the base station, a demodulator 204 and a demodulator 205 demodulate the despread signals, a reception power measuring section 207 and a reception power measuring section 208 measure reception power from the demodulation results, a reception power combiner 209 combines measured reception power, and a transmission power controller 212 controls transmission power based on combined reception power. This makes it possible to perform transmission power control of an open loop at high speed and with high accuracy even when a fading variation is small.