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US 2010/0244953 A1Published application
CDMA/OFDM Compliant Wireless Communication from a Non-Linear Finite Impulse Response Filter Configured with Coefficients that are Responsive to an Input Signal Magnitude
AssigneeAxis Network Technology Ltd.
InventorsPhilip Brown, John Ibison, Jeremy Segar, Stephen Cooper, Frank Friedman
Life of this patent
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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 method comprising:
- producing a wireless standard compliant signal by digitally applying distortion correction coefficients that are derived from amplifier distortion values captured at different amplifier power levels to produce an amplifier distortion corrected signal;
- converting the corrected signal to a radio frequency signal;
- and
- amplifying the corrected signal.
1 more element
Dependencies are inferred from the claim text.