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Nonlinear systematic distortion correction device and method

A nonlinear system, distortion correction technology, applied in the field of communication, can solve the problem of no solution, the digital preprocessing method cannot achieve the best effect, etc., and achieve the effect of improving the identification accuracy

Active Publication Date: 2011-12-14
ZTE CORP
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Problems solved by technology

Therefore, the above method is very effective in the occasions where the linearity index of the power amplifier is not high, but for the system with high linearity requirements, the existing digital preprocessing method can not achieve the best effect
For this problem, no effective solution has been proposed

Method used

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  • Nonlinear systematic distortion correction device and method

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Embodiment Construction

[0042] Hereinafter, the present invention will be described in detail with reference to the drawings and examples. It should be noted that, in the case of no conflict, the embodiments in the present application and the features in the embodiments can be combined with each other.

[0043] figure 1 is a structural block diagram of a nonlinear system distortion correction device according to an embodiment of the present invention. Such as figure 1 As shown, the nonlinear system distortion correction device according to the embodiment of the present invention includes: an adaptor module 12 and a pre-corrector module 14, wherein,

[0044] Adapter module 12 includes:

[0045] A data collection unit 122, configured to collect main link data and feedback link data;

[0046] A signal processing unit 124, connected to the data acquisition unit 122, for preprocessing the collected main link data and feedback link data;

[0047] The correction parameter identification unit 126 is conne...

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Abstract

The invention discloses a nonlinear systematic distortion correction device and method. The nonlinear systematic distortion correction device comprises a self-adaptor module and a precorrector module, wherein the self-adaptor module comprises a data acquisition unit, a signal processing unit and a correction parameter identification unit, wherein the data acquisition unit is used for acquiring primary link data and feedback link data; the signal processing unit is used for preprocessing the acquired primary link data and feedback link data; the correction parameter identification unit is used for carrying out parameter identification according to the processed primary link data and feedback link data and obtaining nonlinear systematic correction parameters; and the precorrector module is used for carrying out precorrection processing on the primary link data according to the correction parameters. By utilizing the technical scheme provided by the invention, the problem that the existing digital preprocessing method can not meet the high-linearity requirement is solved, and further the effect of improving the identification accuracy of the correction parameters is achieved.

Description

technical field [0001] The present invention relates to the communication field, in particular to a nonlinear system distortion correction device and method. Background technique [0002] With the development of mobile communications, spectrum resources are becoming more and more scarce. In order to improve the efficiency of spectrum utilization, high-efficiency modulation methods are often used. However, these modulation methods produce intermodulation interference when the power amplifier works in the near-saturation region, which leads to Power amplifiers produce severe non-linear distortion. One way to solve the nonlinear distortion problem of the power amplifier is to adopt power back-off technology, but this leads to the low efficiency and high power consumption of the power amplifier. Therefore, the compromise between frequency utilization and power amplifier efficiency requires the use of some processing technology to correct the nonlinear distortion of the power am...

Claims

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Application Information

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IPC IPC(8): H04L25/49
CPCH04L27/368
Inventor 宁东方韦兆碧张烈游爱民向际鹰
Owner ZTE CORP
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