This application is a continuation of U.S. patent application Ser. No. 16/288,094 filed on Feb. 27, 2019, which is incorporated herein by reference in its entirety.

Wireless sensor networks are typically implemented using low power single chip devices operating on AA batteries, e.g., wireless communication devices. Such devices include a Wi-Fi radio with an integrated radio frequency (RF) power amplifier (PA). The RF PA is an active component creating high power levels and needs to operate with high efficiency to help conserve power. However, highly efficient operation of a PA when using amplitude modulated signals typically results in nonlinear distortions that degrade the performance of the network. For this reason, regulatory requirements limit the amount of distortion that is tolerable, commonly in the form of limits on the power emitted in neighboring frequency channels. In view of these requirements, improving PA linearity and reducing distortions is important.

One technique that can be used to improve PA linearity is digital predistortion (DPD) of the PA based on calibration parameters. The DPD may be performed when the device is powered on and may be performed at other times as well. Current techniques for DPD calibration may be too time consuming and/or consume too much power to be used in battery operated devices.