Adaptive digital pre-distortion system
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United States of America Patent
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May 22, 2018
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app pub date -
Dec 15, 2016
filing date -
Dec 15, 2016
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Abstract
An adaptive digital pre-distortion system includes a transmitting module and a receiving module. The transmitting module is configured to receive a first signal and includes a modulator, pre-distortion module, and transmitting circuit. The pre-distortion module is coupled to the modulator to perform a pre-distortion operation in accordance with the first modulation signal and generate a first pre-distortion signal. The transmitting circuit generates a first transmitted signal in accordance with the first pre-distortion signal. The receiving module is configured to receive the first transmitted signal and includes a receiving circuit, demodulator, and prediction module. The prediction module generates a pre-distortion parameter in accordance with a modulation vector error between the second demodulation signal and the first signal and transmits the pre-distortion parameter to the pre-distortion module, wherein the pre-distortion module adjusts the pre-distortion operation of the pre-distortion module in accordance with the pre-distortion parameter.
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