| 摘要 |
<p>A wireless transmission device for preventing amplitude fluctuations or nonlinear distortions from occurring in a system in which transmission power varies is provided. The wireless transmission device (100) transmits, by time-division multiplexing, an uplink shared channel signal and a sounding reference signal (SRS), the bandwidths of which can be set differently to each other, at a transmission power requested by a communication partner. A transmission amplifier (111) amplifies the uplink shared channel signal and SRS. A power amplifier (PA) power supply control unit (104) controls a DC-DC converter (105) in such a manner that a power supply voltage is supplied to the transmission amplifier (111) on the basis of the transmission power requested by the communication partner. If the difference in power between the uplink shared channel signal and the transmission power is greater than or equal to a prescribed value, a gain control unit (103) controls the difference in power so as to reduce the difference in voltage between the power supply voltage supplied during uplink shared channel amplification and the power supply voltage supplied during SRS amplification.</p> |
