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Screening method and device of digital pre-distortion sample

A technology of digital predistortion and screening method, which is applied in the field of wireless communication, can solve problems such as ACPR instability of the output signal of the power amplifier, achieve high DPD performance, and ensure the effect of ACPR index

Inactive Publication Date: 2016-11-23
ZTE CORP
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  • Abstract
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  • Claims
  • Application Information

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Problems solved by technology

[0004] The main purpose of the present invention is to provide a digital pre-distortion sample screening method and device, aiming to solve the problem of unstable ACPR output signal of the power amplifier

Method used

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  • Screening method and device of digital pre-distortion sample
  • Screening method and device of digital pre-distortion sample
  • Screening method and device of digital pre-distortion sample

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Embodiment Construction

[0051] It should be understood that the specific embodiments described here are only used to explain the present invention, not to limit the present invention.

[0052] The main solution of the embodiment of the present invention is: receiving a base station standard message, and obtaining a screening parameter corresponding to the base station standard message; screening a data stream transmitted by the base station according to the screening parameter to obtain a first digital predistortion sample. Obtain the screening parameters corresponding to the base station standard message by receiving the base station standard message, so that it can ensure that better DPD input samples are screened under single-mode / mixed-mode signals, obtain higher DPD performance, and ensure that the power amplifier output signal ACPR indicator stability.

[0053] Since the existing digital pre-distortion sample screening methods are only aimed at one or several single-mode signals, the versatilit...

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Abstract

The invention discloses a screening method of a digital pre-distortion sample. The screening method comprises the following steps: receiving a base station system message and acquiring screening parameters corresponding to the base station system message; and screening data streams transmitted by a base station according to the screening parameters to obtain a first digital pre-distortion sample. The invention further discloses a screening device of the digital pre-distortion sample. With the adoption of the screening method and device of the digital pre-distortion sample, the stability of an ACPR (Adjacent Channel Power Ratio) index of an output signal of a power amplifier can be guaranteed.

Description

technical field [0001] The invention relates to the technical field of wireless communication, in particular to a digital predistortion sample screening method and device. Background technique [0002] Digital pre-distortion technology is to pre-distort the input signal on the input side of the RF power amplifier. Its characteristics are opposite to the distortion characteristics of the power amplifier and are used to offset the nonlinear distortion of the power amplifier. In the field of wireless communication, pre-distortion processing technology is more and more favored by operators and widely used because it improves power amplifier efficiency and reduces production and operation costs. With the development of wireless communication technology, the joint application of multiple standards has also been more and more used in our lives. [0003] Modern base station equipment has widely adopted the SDR (Software Defined Radio, software radio) platform, and the same hardware...

Claims

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Application Information

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IPC IPC(8): H03F1/32
CPCH03F1/32
Inventor 王明哲
Owner ZTE CORP
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