Patent ID: 7816984

Claim:
A lookup table generation method for a predistorter for a power amplifier, the lookup table generation method comprising: sending a first single tone signal with a maximum expected amplitude to a channel simulation device including the power amplifier; receiving a first simulation output signal corresponding to the first single tone signal from the channel simulation device; estimating a closed loop gain and a closed loop phase of the power amplifier according to the first single tone signal and the first simulation output signal; sending a plurality of single tone signals to the channel simulation device, each single tone signal having an amplitude different from all others of the plurality of single tone signals and lower than the maximum expected amplitude; receiving a plurality of simulation output signals corresponding to the plurality of single tone signals from the channel simulation device; generating a plurality of predistortion parameters according to the closed loop gain, the closed loop phase, the plurality of single tone signals and the plurality of simulation output signals; and storing the plurality of predistortion parameters in a lookup table of the predistorter.