Method, device and system for multi-band digital predistortion processing

A digital pre-distortion and pre-distortion processing technology, applied in the direction of synchronization/start-stop system, etc., can solve the problems of poor linearization effect and achieve the effect of improving linearization effect

Active Publication Date: 2020-05-05
COMBA TELECOM SYST CHINA LTD
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  • Abstract
  • Description
  • Claims
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Problems solved by technology

[0004] Based on this, it is necessary to provide a multi-band digital pre-distortion processing method and device for the problem of relatively poor linearization effect

Method used

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  • Method, device and system for multi-band digital predistortion processing
  • Method, device and system for multi-band digital predistortion processing
  • Method, device and system for multi-band digital predistortion processing

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Embodiment Construction

[0027] The technical solution of the present invention will be described below in conjunction with the accompanying drawings.

[0028] Such as figure 1 As shown, the present invention provides a method for multi-band digital pre-distortion processing, which may include the following steps:

[0029] S1, acquiring the nonlinear distortion index of the feedback signal of the power amplifier corresponding to each frequency band;

[0030] In the embodiment of the present invention, the output signal y1 of the power amplifier is i As the feedback signal of the power amplifier, to the input signal x of the power amplifier i Perform digital predistortion processing. In one embodiment, the input signal x of each frequency band of the power amplifier can be collected synchronously i , and synchronously collect the feedback signal y1 of each frequency band of the power amplifier i , and then according to the input signal x of each frequency band i And the feedback signal y1 of the ...

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Abstract

The present invention relates to a multiband digital predistortion processing method and device; by means of acquiring a non-linear distortion indicator for a feedback signal of each band and carrying out iterative non-linear cancellation on the feedback signal of each band, it is possible to effectively improve the linearization effect of multiband digital predistortion.

Description

technical field [0001] The present invention relates to the technical field of wireless communication signal processing, in particular to a multi-band digital pre-distortion processing method, device and system. Background technique [0002] In modern wireless communication systems, the higher power transmitter is the part with the highest energy consumption in the entire wireless communication system. In order to save the energy consumption of the entire system, improving the energy efficiency ratio of the transmitter is the best choice for each equipment manufacturer. However, increasing the static operating point can improve the energy efficiency ratio of the transmitter, but because it enters the nonlinear range of the power amplifier, it leads to nonlinear distortion of the transmitted signal. At present, the most commonly used method to solve nonlinear distortion is digital predistortion. [0003] With the increasingly crowded wireless spectrum, wireless communication...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04L25/49
CPCH04L25/49
Inventor 刁穗东吴卓智姜成玉雷文明
Owner COMBA TELECOM SYST CHINA LTD
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