Modulation agnostic digital hybrid mode power amplifier system and method
First Claim
1. A digital predistortion system for linearizing the output of power amplifiers comprising:
- an input configured to receive an input signal for wireless communications;
at least one power amplifier for outputting an amplified signal;
a feedback path including at least one feedback signal derived from the amplified signal, wherein the at least one feedback signal includes a representation of a noise characteristic of the power amplifier;
digital predistortion logic for predistorting the input signal and supplying a predistorted signal to the at least one power amplifier, wherein the digital predistortion logic complies at least in part with the equation;
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Abstract
A RF-digital hybrid mode power amplifier system for achieving high efficiency and high linearity in wideband communication systems is disclosed. The present invention is based on the method of adaptive digital predistortion to linearize a power amplifier in the RF domain. The present disclosure enables a power amplifier system to be field reconfigurable and support multi-modulation schemes (modulation agnostic), multi-carriers and multi-channels. As a result, the digital hybrid mode power amplifier system is particularly suitable for wireless transmission systems, such as base-stations, repeaters, and indoor signal coverage systems, where baseband I-Q signal information is not readily available.
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Citations
10 Claims
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1. A digital predistortion system for linearizing the output of power amplifiers comprising:
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an input configured to receive an input signal for wireless communications; at least one power amplifier for outputting an amplified signal; a feedback path including at least one feedback signal derived from the amplified signal, wherein the at least one feedback signal includes a representation of a noise characteristic of the power amplifier; digital predistortion logic for predistorting the input signal and supplying a predistorted signal to the at least one power amplifier, wherein the digital predistortion logic complies at least in part with the equation; - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10)
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Specification