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Method, device and system for zooming out digital pre-distortion

A digital predistortion, digital technology, applied in the field of communication, can solve the problems of large line voltage drop and insufficient power supply of RU

Active Publication Date: 2014-07-30
XIAN RUIXIN TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] However, when the centralized power supply is adopted in the prior art, the power supply of the computer room far away is used to supply power to the RU, and the voltage drop of the line is large, which easily leads to the problem of insufficient power supply of the RU.

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  • Method, device and system for zooming out digital pre-distortion

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Embodiment Construction

[0063] In order to make the purpose, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments It is a part of embodiments of the present invention, but not all embodiments. 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.

[0064] figure 1 It is a flow chart of Embodiment 1 of the digital predistortion zoom-out method of the present invention, as shown in figure 1 As shown, the method of this embodiment may include:

[0065] Step 101, the near-end unit NU receives the signal to be transmitted sent by the front-end equipment;

[0066]Step 102, the NU performs frequ...

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Abstract

The embodiment of the invention provides a method, device and system for zooming out digital pre-distortion. The method for zooming out the digital pre-distortion comprises the steps that a near-end unit (NU) receives signals to be transmitted and sent by preceding-stage equipment; the NU carries out frequency conversion on the signals to be transmitted to obtain intermediate frequency digital signals; the NU carries out digital pre-distortion (DPD) processing on the intermediate frequency digital signals according to feedback signals of a remote unit (RU); the NU sends the signals after the DPD processing to the RU. According to the embodiment of the method, device and system for zooming out the digital pre-distortion, the DPD processing can be completed at the NU, the linear processing of a power amplifier does not need to be carried out at the RU, the power consumption of the RU is reduced, and the RU power supply stability is improved when centralized power supply is carried out.

Description

technical field [0001] The present invention relates to communication technology, in particular to a method, device and system for digital predistortion (DPD, Digital Pre-Distortion) telemetry. Background technique [0002] The remote system in wireless coverage is divided into a near-end unit (NU, Near Unit) and a remote unit (RU, Remote Unit). NU is, for example, an indoor baseband processing unit (BBU, Building Base band Unit), and RU is, for example, a radio frequency pull The remote unit (RRU, Radio Remote Unit), RU is remotely connected to the NU through optical fiber, twisted pair, etc., which can solve the problems of difficult site selection and excessive investment costs in mobile network construction to a certain extent. [0003] For remote systems, the power supply methods mainly include: centralized power supply, NU is powered by the power supply of the computer room, and RU is powered by the power supply of the computer room in the form of DC remote supply; dec...

Claims

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Application Information

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IPC IPC(8): H04L25/49H04L12/10
Inventor 龚兰平袁震
Owner XIAN RUIXIN TECH CO LTD
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