Method for adjusting predistortion factors and device thereof

A technology of pre-distortion coefficient and adjustment method, which is applied in the parts of amplification device, transmission system, baseband system, etc., can solve the problems of high cost and achieve good pre-distortion effect

Active Publication Date: 2012-06-20
HUAWEI TECH CO LTD
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0006] The technical problem to be solved by the embodiments of the present invention is to provide a pre-distortion coefficient adjustment method and device, which can overcome the influence of temperature and PA aging on th

Method used

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  • Method for adjusting predistortion factors and device thereof
  • Method for adjusting predistortion factors and device thereof
  • Method for adjusting predistortion factors and device thereof

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Embodiment Construction

[0030] 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 only some, not all, embodiments of the present invention. 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.

[0031] Please refer to figure 1 , is a schematic flow chart of the first embodiment of the method for adjusting the predistortion coefficient of the present invention, the method includes:

[0032] Step S11, adjusting the predistortion coefficient corresponding to the transmit power currently set by the transmitting end.

[0033] Specifically, adjusting the predistortion coefficient corresponding to the transmission power currently set by the transmitting end may ...

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Abstract

The present invention discloses a method for adjusting predistortion factors, comprising: adjusting the predistortion factors corresponding to the transmitting power set by the transmitting terminal; analyzing the signal receiving quality report feedbacked by the receiving terminal which is acquired by the predistortion factors before and after adjustment respectively so as to determine the conditions of the signal receiving quality of the receiving terminal; taking the predistortion factors after adjustment as the the predistortion factors corresponding to the set transmitting power of the transmitting terminal when the signal receiving quality becomes better; and then returning the steps of the predistortion factors corresponding to the set transmitting power of the adjusted transmitting terminal; and taking the predistortion factors before adjustment as the the predistortion factors corresponding to the set transmitting power of the transmitting terminal when the signal receiving quality becomes worse. The present invention also discloses a device for adjusting predistortion factors. The present invention can overcome the influence of the temperature and PA ageing on the predistortion effect when using the open loop predistortion factors and the high cost caused by using the closed loop predistortion factors.

Description

technical field [0001] The invention relates to the field of mobile communication, in particular to a method and device for adjusting a predistortion coefficient. Background technique [0002] In wireless communication, the nonlinear problem of PA (Power Amplifier, power amplifier) ​​restricts the maximum transmission power and efficiency of PA; in order to maximize the transmission power and efficiency of PA, pre-distortion technology can be used to offset the nonlinearity of PA. So that the PA can work in the non-linear amplification area to improve the transmit power and efficiency of the PA; pre-distortion technology refers to pre-distorting the signal before the signal is input to the PA to obtain a distorted signal. When the distorted signal passes through the PA When , it will offset the nonlinearity of the PA, realize the linearization of the PA, and improve the transmit power and efficiency of the PA. [0003] In the pre-distortion technology, the pre-distortion co...

Claims

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Application Information

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IPC IPC(8): A99Z99/00
CPCH04L25/08H03F1/3258H03F1/3247H03F1/3241H03F3/189H04L25/03343H03F3/195H04L25/49H03F3/245H04L27/368H04B1/0475H04B2001/0425H04B3/23
Inventor 马新岳薛巍王天祥邓向东
Owner HUAWEI TECH CO LTD
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