Abstract: Embodiments may relate to digital predistortion (DPD). DPD logic may identify whether the wireless signal output power of a wireless signal that is to be transmitted is above a power threshold. The signal output power is over (or, in some embodiments, equal to) the power threshold, then the DPD logic may operate in accordance with a pre-stored DPD mode wherein DPD is performed on the wireless signal based on one or more pre-stored DPD coefficients. If the signal output power is under (or, in some embodiments, equal to) the power threshold, then the DPD logic may operate in accordance with a continuously-updated DPD mode. Other embodiments may be described or claimed.

Abstract: Digital predistortion methods with power-specific capture selection are disclosed. An example method includes receiving a feedback signal indicative of a power amplifier output and establishing boundaries of multiple ranges of powers in the received signal by analyzing signal statistics in windowed intervals of multiple trial captures. At least one range established in this manner may include the highest value, and at least one other range may include the lowest value of the maximum powers determined for the trial captures. The method further includes updating a power amplifier model based on one or more captures of the feedback signal in each of the K ranges, and using the model to apply digital predistortion to an input signal. By specifically targeting regions of lower power and combining these with high-power captures, the model can be made more representative of the signal as a whole, and signal quality may be improved.