Looking for breakthrough ideas for innovation challenges? Try Patsnap Eureka!

Digital pre-distortion method, system and communication equipment

A technology of digital pre-distortion and communication equipment, applied in the field of communication, can solve the problems of occupancy, large number of pre-distortion coefficient tables, large storage space resources, etc., and achieve the effect of reducing storage space, good linearity index, and reducing quantity

Active Publication Date: 2021-08-10
HYTERA COMM CORP
View PDF6 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

That is to say, different transmit power levels must correspond to predistortion coefficient tables respectively, resulting in a very large number of predistortion coefficient tables and occupying a large storage space resource

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Digital pre-distortion method, system and communication equipment
  • Digital pre-distortion method, system and communication equipment
  • Digital pre-distortion method, system and communication equipment

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0024]The following will clearly and completely describe the technical solutions in the embodiments of the present application with reference to the accompanying drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, not all of them. Based on the embodiments in this application, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the scope of protection of this application. The terms "first" and "second" herein are only used for descriptive purposes, and cannot be understood as indicating or implying relative importance or implicitly specifying the quantity of indicated technical features. In addition, "many" herein means two or more than two.

[0025] see figure 1 , figure 1 It is a schematic flowchart of an embodiment of the digital predistortion method of the present application.

[0026] Specifically, the method ...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

No PUM Login to View More

Abstract

The invention discloses a digital pre-distortion method, a digital pre-distortion system and communication equipment. The digital pre-distortion method comprises the following steps: acquiring a first power representation value of a first to-be-transmitted signal; determining a current attenuation multiple by using a current transmitting power level, and adjusting the first power characterization value by using the current attenuation multiple to obtain a first adjustment characterization value; searching a first pre-distortion coefficient matched with the first adjustment characterization value from a pre-distortion coefficient table, wherein the pre-distortion coefficient table is obtained by training the signal of the maximum transmitting power level; processing the delayed first to-be-transmitted signal by using a first pre-distortion coefficient to obtain a second to-be-transmitted signal; and attenuating the second to-be-transmitted signal by the current attenuation multiple to obtain a third to-be-transmitted signal subjected to pre-distortion processing. According to the scheme, the number of the predistortion coefficient tables can be reduced, so the storage space of the predistortion coefficient tables is reduced.

Description

technical field [0001] The present application relates to the technical field of communication, and in particular to a digital predistortion method, system and communication equipment. Background technique [0002] Communication equipment such as a base station generally adopts digital pre-distortion (DPD, Digital Pre Distortion) as a downlink linearization technology, and pre-distorts downlink signals in the digital domain. [0003] The transmission power of the signal to be transmitted may belong to different transmission power levels. Generally, when digital pre-distortion processing is performed on the signal to be transmitted, it is divided into multiple transmission power levels according to the difference in transmission power, and the pre-distortion coefficient tables of multiple transmission power levels are obtained through pre-training, and then after the communication equipment such as the base station is powered on, Select and load the initial predistortion coe...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
Patent Type & Authority Applications(China)
IPC IPC(8): H04L25/49
CPCH04L25/49
Inventor 吴宏星涂怡廖连贵
Owner HYTERA COMM CORP
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Patsnap Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Patsnap Eureka Blog
Learn More
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic, Popular Technical Reports.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com