Patent ID: 6396879
Filing Date: 2002-05-28
Classification: H03G,H04B,H04W

Abstract:
A transmission power controller comprising:modulating means for carrying out spreading, modulation and multiplexing of a plurality of input user communication signals, and providing an output multiplexed signal of spread and modulated user communication signals; variable attenuation means for performing power control of said multiplexed signal output from said modulating means in response to an attenuation control signal to produce a transmitted signal; amplifying means for amplifying the transmitted signal output from the variable attenuation means to produce an amplified signal; detecting means for detecting the amplified signal output from said amplifying means to produce a detected output signal; and feedback means for generating said attenuation control signal by comparing said detected output signal of said detecting means with a reference signal having a reference voltage from the total transmission power of the user communication signals, and for supplying said attenuation control signal to said variable attenuation means, wherein said feedback means performs root-mean-square processing of said detected output signal and generates said attenuation control signal by comparing with said reference signal a detected output processed signal produced as a result of the root-mean-square processing.