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Method and device for acquiring digital pre-distortion processing parameter

A technology of digital pre-distortion and parameter processing, which is applied in the direction of transmission control/equalization, communication between multiple stations, electrical components, etc., and can solve problems such as algorithm performance loss

Active Publication Date: 2010-12-01
DATANG MOBILE COMM EQUIP CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
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AI Technical Summary

Problems solved by technology

When the precision cannot reach the level of double-precision DOUBLE operations, the performance of the algorithm will also suffer a certain degree of loss

Method used

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  • Method and device for acquiring digital pre-distortion processing parameter
  • Method and device for acquiring digital pre-distortion processing parameter
  • Method and device for acquiring digital pre-distortion processing parameter

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Embodiment Construction

[0052] Embodiments of the present invention are described in detail below, examples of which are shown in the drawings, wherein the same or similar reference numerals designate the same or similar elements or elements having the same or similar functions throughout. The embodiments described below by referring to the figures are exemplary only for explaining the present invention and should not be construed as limiting the present invention.

[0053] In order to facilitate the understanding of the present invention, a brief introduction to the principle of orthogonality in geometry is firstly given.

[0054] estimated signal and the difference e between the desired signal y(n) 0 Call it the error signal:

[0055] e 0 = y ( n ) - y ^ ( n ) .

[0056] If the estimated signal Under a certai...

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Abstract

The invention provides a system information sending method, which comprises the following steps of: calculating the autocorrelation matrix of a feedback signal X; and calculating the cross correlation matrix of the conjugate matrix Y* of the feedback signal X and a sending signal Y and calculating a pre-distortion parameter W, wherein RW is equal to B. The invention also provides a system information sending device. The problem of huge calculation amount during matrix decomposition is solved according to the technical scheme provided by the invention. In the technical scheme provided by the invention, based on a geometrical orthogonality principle the feedback signal and the sending signal of digital pre-distortion (DPD) form a nonlinear correlation matrix and an optimal nonlinear evaluation parameter is obtained, so that the acquisition time of the DPD coefficient after the optimization is greatly shortened, and a highly efficient and feasible algorithm is provided for the application of the DPD to products.

Description

technical field [0001] The present invention relates to the field of digital communication, in particular, the present invention relates to a method and device for obtaining digital predistortion processing parameters. Background technique [0002] Power amplifiers in wireless communications handle the complex waveforms used in modern communications systems by providing excellent linearity and efficiency. Usually, designers choose to increase digital processing capabilities by using DPD (Digital Predistortion) technology, which Helps maximize PA efficiency, increase reliability, and reduce operating costs. Digital technology offers many advantages over analog methods in terms of cost, power consumption and reliability. Because of these advantages, older narrowband, single-carrier, triple-conversion systems are being replaced by wideband, multi-carrier transmitters controlled by digital signal processing and digital-to-analog converters that produce direct IF and even direct...

Claims

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Application Information

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IPC IPC(8): H04B7/005H04L29/02H04B1/00H04B7/26
Inventor 熊军
Owner DATANG MOBILE COMM EQUIP CO LTD
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