Amplifier pre-distortion systems and methods
AssigneeNortel Networks Limited
InventorsBRADLEY JOHN MORRIS, ARTHUR THOMAS GERALD FULLER
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Abstract
A method of optimizing performance of a multiple path amplifier includes: splitting an input signal to derive a respective sub-signal for each branch of the multiple path amplifier; independently pre-distorting each sub-signal using a known performance characteristic of its associated branch of the multiple path amplifier; and supplying each pre-distorted sub-signal to its associated branch of the multiple amplifier.
Claims19
A method of optimizing performance of a multiple path amplifier, the method comprising:
- digitally processing an input signal to generate a respective sub-signal for each branch of the multiple path amplifier;
- digitally pre-distorting each sub-signal using a known performance characteristic of its associated branch of the multiple path amplifier;
- and
- supplying each pre-distorted sub-signal to its associated branch of the multiple path amplifier.
A digital linearizer for optimizing performance of a multiple path amplifier, the digital linearizer comprising:
- a digital signal processor for digitally processing an input signal to generate a respective sub-signal for each branch of the multiple path amplifier;
- and
- a respective pre-distorter for digitally pre-distorting each sub-signal using a known performance characteristic of its associated branch of the multiple path amplifier, an output of each pre-distorter being connected to supply a pre-distorted sub-signal to its associated branch of the multiple path amplifier.
Dependencies are inferred from the claim text.