Narrow-band feedback digital pre-distortion system and method
A digital pre-distortion and pre-distortion technology, which is applied in the direction of synchronization/start-stop system, improved amplifier to reduce non-linear distortion, components of amplifier devices, etc., can solve problems such as increasing the difficulty of system implementation and increasing system cost
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[0058] The technical solution of the present invention will be further described in detail below in conjunction with the accompanying drawings, but the protection scope of the present invention is not limited to the following description.
[0059] Such as figure 1 As shown, a digital predistortion system with narrowband feedback includes a digital predistorter, a digital-to-analog conversion module, a power amplifier, a filter, an analog-to-digital conversion module, and a predistortion parameter estimation module;
[0060] The input terminal of the digital predistorter is connected to the signal source, and the output terminal of the digital predistorter is connected with the digital-to-analog conversion module and the predistortion estimation module respectively; the output terminal of the digital-to-analog conversion module is connected with the power amplifier, and the output of the power amplifier The terminals are respectively connected with the signal output device and ...
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