Patent ID: 7983327
Filing Date: 2011-07-19
Classification: H03F,H04L

Abstract:
1. A method for providing digital adaptive predistortion in a subscriber station, comprising: applying predistortion, based on a set of predistortion characteristics, to a transmit signal to generate a predistorted signal; amplifying an amplifier input signal to generate an amplified signal, the amplifier input signal generated based on the predistorted signal; sampling the amplified signal to generate a sampled signal; processing the sampled signal through a receive channel of the subscriber station to generate a processed signal, wherein the receive channel is coupled to at least one antenna and configured to receive incoming signals via the antenna, and wherein the processing comprises filtering, using a programmable filter, the sampled signal on the same bandwidth on the receive channel as a transmit channel during a transmit period, and filtering, using the programmable filter, a receive signal on a varied bandwidth during a receive period; and determining whether to adjust the set of predistortion characteristics based on the processed signal.