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Method and system capable of implementing radio frequency predistortion

A technology of radio frequency predistortion and predistortion signal, applied in the field of wireless communication, can solve the problems of improving the cost of radio frequency predistortion system and the working efficiency of radio frequency predistortion system, and achieve the effect of simplifying design work, avoiding power consumption and reducing cost

Inactive Publication Date: 2006-12-13
HUAWEI TECH CO LTD
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Problems solved by technology

[0011] image 3 , 4 . The RF predistortion system in 5 can also calibrate high-order nonlinear distortion signals, and has the advantages of good calibration effect and high calibration dynamic range. However, since the predistortion signal generator is generally customized by the manufacturer and is in It is always in the working state during the whole input signal process, which increases the cost of the RF predistortion system and reduces the working efficiency of the RF predistortion system

Method used

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  • Method and system capable of implementing radio frequency predistortion
  • Method and system capable of implementing radio frequency predistortion
  • Method and system capable of implementing radio frequency predistortion

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Embodiment Construction

[0040] The core of the method of the present invention is: the predistortion signal generator determines its working state according to the input radio frequency signal and the linear state of the power amplifier, and performs radio frequency predistortion processing according to the working state of the predistortion signal generator.

[0041] The technical solution provided by the present invention will be further described below based on the core idea of ​​the present invention.

[0042] The main principle of the present invention to realize the radio frequency pre-distortion is also: utilize the pre-distortion signal generator to generate the distorted signal component to the input radio frequency signal, the phase and amplitude control of the distorted signal component is carried out before feeding into the power amplifier, so that it is consistent with the original input The distorted signal components generated by the RF signal passing through the power amplifier have op...

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Abstract

The invention discloses a realizing method of RF predistortion and system, which comprises the following steps: affirming the working condition of predistortion signal generator according to input RF signal and power amplifier linear condition; proceeding RF predistortion disposal according to the working condition of predistortion signal generator to avoid power consumption. The invention reduces system cost, which improves working efficiency.

Description

technical field [0001] The invention relates to the technical field of wireless communication, in particular to a method and system for realizing radio frequency predistortion. Background technique [0002] The radio frequency predistortion technology is a technology that pre-distorts the input radio frequency signal in the analog domain, that is, the radio frequency domain. The radio frequency predistortion technology can make the distortion signal component generated by the radio frequency signal after passing through the radio frequency power amplifier and the distortion signal component produced by the original input radio frequency signal equal in magnitude and opposite in phase, so as to offset the nonlinear influence of the power amplifier on the input signal, So as to achieve the purpose of linearization. [0003] At present, there are two main methods for implementing RF predistortion in an RF predistortion system: [0004] Method 1: According to the compression o...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04B1/12H03F3/20
Inventor 吴剑锋孙捷
Owner HUAWEI TECH CO LTD
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