| 摘要 |
PROBLEM TO BE SOLVED: To improve accuracy of predistortion compensating processing to a transmission signal by preventing the influence of linear distortion from a filter to the transmission signal. SOLUTION: The influence caused by the group delay characteristics of a post-filter 104 is removed by previously applying distortion from an equalizer 103 so as to cancel the distortion caused by making the transmission signal pass through the post-filter 104 before inputting to the post-filter 104, and damage in the effect of predistortion due to a distortion compensating part 101 is prevented. |
