Back to results
US 2010/0244954 A1Published application
CDMA/OFDM Linearity Compliant Wireless Communication Amplifier
AssigneeAxis Network Technology Ltd.
InventorsPhilip Brown, John Ibison, Jeremy Segar, Stephen Cooper, Frank Friedman
Life of this patent
Estimating the term…
Abstract
A digital pre-distortion system which can provide the flexibility to model the highly non-linear distortion associated with High Efficiency RF Power Amplifiers while through a novel implementation of a least squares estimation process allows an implementation well suited for an FPGA application where limited resources and in particular memory resources are available.
Claims1
A system comprising:
- a pre-distorter for introducing distortion into an input signal of an amplifier based on coefficients that are linearly interpolated from a subset of coefficients that are based on a least squares optimized model of time varying non-linearity characteristics derived from samples of the amplifier output for producing a wireless signal that is compliant with at least one wireless standard linearity requirement.
Dependencies are inferred from the claim text.