Abstract: A method for digital predistortion (DPD) calibration in a wireless communication device is provided that includes transmitting, by transmission circuitry of the wireless communication device, a plurality of pulses, where each pulse corresponds to an amplitude step in a pattern of amplitude steps, where the amplitude steps are separated by silence gaps, receiving each pulse in receiver circuitry of the wireless communication device, generating, by an accumulator component of the wireless communication device, an accumulated sample for each pulse based on a plurality of samples output by the receiver circuitry for the pulse, and computing, by a processor of the wireless communication device, amplitude dependent gain (AM/AM) and amplitude dependent phase shift (AM/PM) values for each accumulated sample.

Abstract: A foldable cradle assembly includes a cradle made of a flexible material, a foldable frame supporting the cradle, and an attachment device for attaching the cradle to the frame such that the flexible material hangs down freely from an open top of the cradle. Four lines may be attached to four spaced apart corners of the cradle at the first line ends. A first two of the lines at a first cradle end of the cradle may be attached to a first position on the frame and a second two of the lines at a second cradle end of the cradle may be attached to a second position on the frame such that the first and second positions are spaced apart a distance greater than a cradle length of the cradle. Spreading bars for holding the top of the cradle spread open may be disposed between each of the two lines attached to each of the cradle ends. The cradle may have a spread out rectangular shape and the lines may be strings, ropes, or chains.