Patent Document ID: 9036736
Application ID: 13971465
Patent Flag: 1

Claim One:
1. An apparatus for controlling an update of at least one digital pre-distortion (DPD) coefficient, applicable to a digital power control system, the apparatus comprising: an update controlling unit configured to perform a judgment to determine a group of fully-trained DPD coefficients among a plurality of DPD coefficients; and a DPD coefficient generating unit configured to adaptively update the group of fully-trained DPD coefficients according to a result of the judgment performed by the update controlling unit; wherein the update controlling unit determines the group of fully-trained DPD coefficients according to power distribution information of a DPD input signal; wherein each of the plurality of DPD coefficients corresponds to a specific power level, and for each specific power level, if a probability that instantaneous power of the DPD input signal is greater than the specific power level is greater than a first threshold value, the update controlling unit determines that the DPD coefficient to which the specific power level corresponds is fully trained.