DISTORTION COMPENSATION TRANSMISSION APPARATUS

摘要

PROBLEM TO BE SOLVED: To provide an adaptive pre-distorter type distortion compensation transmission apparatus for reducing a converging time of distortion compensation coefficients and compensating distortion with high accuracy by using each distortion compensation coefficient stored in a distortion compensation table at the same frequency of appearance in average. SOLUTION: An address generating section 1-1 for generating an access address of a distortion compensation table 12-1 checks an appearance frequency distribution of a power or an amplitude of a transmission signal obtained from a power/amplitude calculation section 1-11 and adjusts each step width of the power or amplitude of the transmission signal to generate the address of the distortion compensation table 12-1 by allowing an address re-calculation generating section 1-12 to provide a uniform distribution of the appearance frequency of the addresses of the distortion compensation table 12-1 corresponding to each step of each power or amplitude of the transmission signal. COPYRIGHT: (C)2004,JPO