| 摘要 |
PROBLEM TO BE SOLVED: To provide a pre-distortion means that is suitable for a multi-carrier modulation signal. SOLUTION: A plurality of independent pre-distorters applies arithmetic operation to digital base band I, Q input signals for a base band frequency band, orthogonal modulation is applied to the processed input signals by using a plurality of sets of intermediate frequency carriers orthogonal to each other and summing orthogonal modulation outputs generates the multi-carrier modulation signal, an adjacent channel leakage distortion compensation signal and an intermodulation distortion compensation signal in a distortion compensation signal generated by the pre-distorters. |
