Transmitting power control unit

摘要

An SIR estimating section estimates an SIR of a received signal from a demodulating signal. An adding section performs subtraction between a RSIR and a TSIR. A positive/negative determining section performs subtraction between an absolute value of the above calculation result and a threshold value from a threshold value setting section. A positive/negative determining section performs determination of positive/negative of the above subtraction result. A multiplying section performs multiplication processing using the output result from each of the positive/negative determining sections to set TPC bit information. A PTC/PL extracting section extracts a TPC bit and a PL bit from the demodulation signal. An amplitude ratio calculating section calculates an amplitude ratio between the TPC bit and the PL bit. An adding section performs subtraction between the amplitude ratio and the threshold value from the threshold value setting section. A gain setting section sets a step gain in accordance with a difference calculated by the adding section and the determination result obtained by the positive/negative determining section.