| 摘要 |
Upon receiving an SIR value, an HSDPA transmission power control section (5) selects a modulation coding system MCS depending on that SIR value and calculates an SIR offset, i.e. the difference between that SIR value and a minimum necessary quality value SIRmin in that modulation coding system MCS, and then controls transmission power of a spread modulation signal being outputted from a spread modulating section (4) based on that SIR value. Transmission power can be reduced without lowering the maximum transmission rate. |
