Method and device for generating digital predistortion table

A digital pre-distortion and table generation technology, which is applied in the direction of synchronization/start-stop system, transmission system, electrical components, etc., can solve the problems of poor digital pre-distortion effect, no DPD table data detection and evaluation, single influencing factors of DPD table, etc.

Active Publication Date: 2020-08-21
NANJING ZHONGXING SOFTWARE
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0005] The present invention provides a method and device for generating a digital pre-distortion table to solve the problem of poor digital pre-distortion effect caused by a single influencing factor of the existing DPD table and no detection and evaluation of the data of the DPD table.

Method used

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  • Method and device for generating digital predistortion table
  • Method and device for generating digital predistortion table
  • Method and device for generating digital predistortion table

Examples

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no. 1 example

[0029] figure 1 The schematic diagram of the structure of the DPD table generation device provided by the first embodiment of the present invention, by figure 1 It can be seen that in this embodiment, the DPD table generation device 1 provided by the present invention includes an evaluation module 11, an acquisition module 12, an optimization module 13 and a generation module 14, wherein,

[0030] The evaluation module 11 is used to use the acquisition module 12 to perform full traversal data collection of all operating parameters of the product samples of the device to be processed for all operating parameters that affect the DPD table of the device to be processed according to the nonlinear mathematical model of the device to be processed to obtain evaluation data , generate a data collection use case and a full range of data generation methods according to the evaluation data, for use by the collection module 12 and the generation module 14;

[0031] The collection module ...

no. 2 example

[0067] figure 2 The flow chart of the DPD table generation method that the second embodiment of the present invention provides, by figure 2 It can be seen that, in this embodiment, the DPD table generation method provided by the present invention includes the following steps:

[0068] S201: According to the nonlinear mathematical model of the device to be processed, for all the working parameters affecting the DPD table of the device to be processed, all the working parameters of the product sample of the device to be processed are collected for full traversal data, to obtain evaluation data, and to generate data collection according to the evaluation data Use cases and a full range of data generation methods;

[0069] S202: Use the data collection use case to collect data from the device to be processed, and obtain optimization data;

[0070] S203: Detect and optimize the digital pre-distortion effect on the optimization data, and use the optimization result as a model co...

no. 3 example

[0078] The present invention provides a system and method for automatically generating a DPD table. The method aims at the nonlinear characteristic mathematical model of the device, uses an automatic data collection system, and collects the DPD model coefficients required by the mathematical model based on the principle of probability and statistics. In order to realize Feasibility, practicability and equipment production efficiency of data collection. These DPD model coefficients are collected under limited samples and screening factors. On this basis, in order to ensure data accuracy and pre-distortion effect, the collected DPD model The coefficients are used to traverse and optimize the pre-distortion effect. After these optimized model coefficients are written into the DPD table, the basic data obtained by these optimizations are finally used to calculate and generate complete data within the range of selected factors and conditions, and generate a complete DPD table, and w...

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Abstract

Disclosed are a DPD table generation method and device, and a DPD system. The method comprises: according to a non-linear mathematical model of a device to be processed, performing full-traversal data acquisition on all operating parameters of a product sample of the device to be processed, obtaining evaluation data, and generating a data acquisition use case and a full-range data generation method according to the evaluation data; acquiring data from the device to be processed using the data acquisition use case so as to obtain optimization data; detecting and optimizing a digital pre-distortion effect of the optimization data, and taking an optimization result as a model coefficient of the non-linear mathematical model; and generating a DPD table according to the model coefficient using the full-range data generation method. By means of the solution, a statistical method is used to evaluate and analyze all operating parameters of a DPD table influencing a device to be processed, and a pre-distortion effect of data in the table is detected and optimized at the same time, so that the DPD table has a better digital pre-distortion effect.

Description

technical field [0001] The invention relates to the field of mobile communication, in particular to a method and device for generating a digital predistortion table. Background technique [0002] Since there are many factors affecting the nonlinear characteristics of the device, the reasons are complicated, and the changes of many influencing factors are continuous during the actual operation of the equipment. Several discrete conditions can be selected among these continuously changing factors, how to select such discrete conditions, when the equipment is running, the DPD data used for pre-distortion under each operating condition may not be available in the DPD table, these How to calculate the data that cannot be obtained in the DPD table through the limited data in the table, and how to ensure the accuracy, effectiveness and optimal performance of the DPD data collected and calculated are the existing various DPD modules and algorithms. focus of attention. [0003] How...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04L25/49H04B1/04
CPCH04B1/0475H04L25/49
Inventor 梁忠杰
Owner NANJING ZHONGXING SOFTWARE
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