Patent ID: 8731495

Claim:
A method of operating a power amplifier, the method comprising: initializing the power amplifier; establishing pre-computed distortion contributions by training based on pre-compensation training feedback signals representative of output of the power amplifier; storing the pre-computed distortion contributions in a lookup table; maintaining the lookup table; accepting an original value that reflects information to be communicated; generating a digital lookup-table key based on the original value; retrieving from the lookup table, using the digital lookup-table key, a corresponding pre-computed distortion contribution for the original value; distorting the original value based on the corresponding pre-computed distortion contribution to obtain a distorted value to pre-compensate for the nonlinear characteristics of the power amplifier; and wirelessly transmitting a pre-distorted signal based on the distorted value; wherein establishing pre-computed distortion contributions comprises: establishing reference information by training based on reference training feedback signals via feedback channels, the reference training feedback signals being representative of the output of the power amplifier; and storing the reference information in a reference table; and wherein maintaining the lookup table comprises refraining, once the pre-computed distortion contributions are established, for at least one entire telephone conversation, from further training to establish the pre-computed distortion contributions or the reference information.