Analog predistortion systems, transceivers and communication equipment

A pre-distortion coefficient and pre-distortion technology, applied in the field of communication

Active Publication Date: 2018-12-14
HUAWEI TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] However, in the APD system architecture of the prior art, accurate control of the phase of the PA from the input signal to the output signal cannot be realized

Method used

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  • Analog predistortion systems, transceivers and communication equipment
  • Analog predistortion systems, transceivers and communication equipment
  • Analog predistortion systems, transceivers and communication equipment

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Embodiment Construction

[0056] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are some of the embodiments of the present invention, but not all of them. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without creative efforts fall within the protection scope of the present invention.

[0057] figure 2 is a schematic block diagram of an analog predistortion system according to an embodiment of the present invention. Such as figure 2 As shown, the analog predistortion system 200 may include: an APD (Analog Predistorter, analog predistorter) core processor, a PA (Power Amplifier, power amplifier), and an analog predistortion coefficient generator. in,

[0058] The APD is configured to receive a predistortion coefficient from the pr...

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PUM

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Abstract

Embodiments of the present invention provide an analog predistortion system, a transceiver, and a communications device. The analog predistortion system comprises an analog predistorter (APD), a power amplifier (PA), and a predistortion coefficient generator. The APD is used for receiving a predistortion coefficient from the predistortion coefficient generator, and predistorting a radio frequency signal on the basis of the predistortion coefficient to obtain a predistorted signal. The PA is used for amplifying the power of the predistorted signal to obtain a transmission signal. The predistortion coefficient generator is used for collecting the radio frequency signal and the transmission signal, and computing the predistortion coefficient on the basis of the radio frequency signal and the transmission signal. The predistortion coefficient generator comprises a phase adjuster which is used for adjusting, by means of a phase adjusting signal, the phase of the transmission signal or an analog baseband signal generated by converting the transmission signal.

Description

technical field [0001] The embodiments of the present invention relate to the communication field, and more specifically, relate to an analog predistortion system, a transceiver and a communication device. Background technique [0002] In a base station, PA (Power Amplifier, power amplifier) ​​transmission distortion is a key factor affecting communication quality. The technology of how to correct PA transmission distortion is also called pre-distortion, which is a problem to be solved by the base station. [0003] If the predistortion processing is performed on digital signals, it is called DPD (Digital Predistorter, digital predistortion). If the predistortion processing is performed on an analog signal, it is called APD (Analog Predistorter, analog predistortion). [0004] figure 1 It is a structural schematic diagram of an analog predistortion system in the prior art. figure 1 Among them, RFin, RFout, RFfb, RF1, RF2, RF3, and RF4 are all analog signals, more specific...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H03F1/32
CPCH03F1/32
Inventor 张福泉汪金铭王晨
Owner HUAWEI TECH CO LTD
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