Patent attributes
Systems and techniques relating to wireless communications are described. A described technique includes aligning a received data sequence with a transmitted data sequence to produce an aligned data sequence, the received data sequence being based on an output of a power amplifier having one or more nonlinear characteristics that is responsive to the transmitted data sequence; dividing the aligned data sequence into N segments; obtaining first nonlinear parameters for the power amplifier based at least on first segments of the N segments; obtaining a second nonlinear parameter(s) corresponding to a second segment(s) of the N segments based on an extrapolation of the first nonlinear parameters, the second segment(s) having a lower transmitted data sequence value(s) than the first segments; and performing digital predistortion on a transmit data sequence based on the nonlinear predistortion parameters to compensate for the one or more nonlinear characteristics of the power amplifier.