| 摘要 |
PROBLEM TO BE SOLVED: To suppress and highly accurately compensate non-linear distortions, which occurs in an amplifier, concerning communication equipment for a radio communication system which uses a digital modulation system. SOLUTION: This device is provided with a power-calculating part 102 for calculating the power of a transmitting signal from a digitally modulated transmitting quadrature baseband signal 101, a table reference part 104 for referring to a prepared nonlinear distortion compensation table, while using a value 103 of the calculated value and a nonlinear distortion compensating part 106 for compensating the nonlinear distortion of the quadrature baseband signal, while using referred-to complex distortion compensation data 105 and by conducting table referring, while using the power value 103 of the transmitting signal, the size of the table reference part 104 can be remarkably reduced markedly. Furthermore, by compensating the nonlinear distortion in the nonlinear distortion compensating part 106, while using a digital complex product, the influence of an analog circuit can be suppressed low. |
