Method and system for training digital predistortion coefficient

A digital predistortion and coefficient technology, applied in the field of communication, can solve the problems of inability to guarantee DPD coefficients, DPD coefficient differences, etc.

Inactive Publication Date: 2015-08-26
DATANG MOBILE COMM EQUIP CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
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Problems solved by technology

It can be seen that this method corrects the DPD coefficient, but it does not guarantee that the corrected DPD coefficient is better, and in some cases, the corrected DPD coefficient may be worse

Method used

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  • Method and system for training digital predistortion coefficient
  • Method and system for training digital predistortion coefficient
  • Method and system for training digital predistortion coefficient

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Embodiment Construction

[0040] In order to make the object, technical solution and beneficial effects of the present invention more clear, the present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described here are only used to explain the present invention, not to limit the present invention.

[0041] figure 1 A flow chart of a method for training DPD coefficients provided by an embodiment of the present invention is exemplarily shown.

[0042] An embodiment of the present invention provides a DPD coefficient training method, such as figure 1 The following steps are shown:

[0043] Step A: Send the original training sequence through the radio frequency unit, receive the feedback signal of the original training sequence, generate DPD coefficients according to the original training sequence and the feedback signal of the original training sequence, update the lookup table accor...

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Abstract

The embodiment of the invention relates to the technical field of communication, specifically to a method and a system for training a digital predistortion coefficient, which are used for training a DPD coefficient meeting performance requirements. In the embodiment of the invention, the adjacent channel power ratio (ACPR) of a feedback signal of a training sequence is judged after each DPD processing, so that the effect of each DPD processing can be accurately judged; and when the ACPR meet the requirements, i.e. the effect of DPD processing meets the requirements, the process is ended, and therefore a DPD coefficient meeting the performance requirements is obtained.

Description

technical field [0001] Embodiments of the present invention relate to the field of communication technologies, and in particular to a method and system for training digital predistortion coefficients. Background technique [0002] With the high recognition of mobile operators at home and abroad and the large-scale commercial deployment in recent years, the network construction mode of baseband processing unit (Base Band Unit, referred to as BBU) + radio remote unit (Radio Remote Unit, referred to as RRU) presents a fundamental The trend of changing the traditional network architecture. Due to the differences in spectrum policies in various countries and regions, the spectrum resources obtained by mobile operators are relatively scattered, such as 900MHz / 1800MHz / 2100MHz / 2300MHz / 2600MHz, etc., and generally face the challenge of multi-standard and multi-band. Although the spectrum resources are abundant, the frequency bands are separated by a large distance, and the broadband...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04L25/49
Inventor 熊军孙华荣王杰丽王静怡王策
Owner DATANG MOBILE COMM EQUIP CO LTD
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