PA (power amplifier) overpower protecting method and device

An over-power protection and power technology, applied in the field of communication, can solve the problems of business impact and system performance that cannot be ignored

Inactive Publication Date: 2012-11-14
DATANG MOBILE COMM EQUIP CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0009] Finally, while considering the protection of the PA, the impact on system performance cannot be ignored. The two must be considered in a balanced manner. This is because the frequent switching of the antenna introduced by the protection will inevitably affect the normal business.

Method used

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  • PA (power amplifier) overpower protecting method and device
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  • PA (power amplifier) overpower protecting method and device

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Embodiment Construction

[0038] Embodiments of the present invention provide a PA overpower protection method and device, so as to realize more complete overpower protection for the PA.

[0039] The technical solutions proposed by the embodiments of the present invention can be used to enhance the power protection of PAs in TD-LTE and TD-SCDMA base stations, so that there is no need to design complex PA current monitoring and hardware overpower protection circuits, by using digital domain The algorithm flow solves the problem of PA damage caused by various abnormal conditions in the entire PA input front end.

[0040] The technical solution proposed by the embodiment of the present invention can be used in any other high-power data transmission occasions such as WCDMA FDD, UTRA TDD, TD-SCDMA, TD-LTE, etc., and can be completely implemented by software, or by software and hardware collaboration or by SOC. As a design IP integrated in various required system applications.

[0041] In the embodiment of ...

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Abstract

The invention discloses a PA (power amplifier) overpower protecting method and a PA overpower protecting device, which is used for realizing the more complete overpower protection of a PA. The method comprises the following steps that the existing statistical energy protection mechanism is adopted; by aiming at in-phase component and orthogonal component data of phase and amplitude signals of each antennas subjected to DUC (digital up converter), CFR (crest ractor reduction) and DPD (digital pre distortion) processing, the sum of the energy value of the orthogonal component data and the energy value of the in-phase component of phase and amplitude signals in each second time duration is respectively calculated, and the second sum value is obtained; and the second sum value is compared with the preset second power protection threshold value, and when the second sum value of any one antenna is greater than the second power protection threshold value, the in-phase component and orthogonal component data of the phase and amplitude signals in each second time duration is sent to the PA after zero clearing, wherein the second time duration is smaller than 1 chip, so the more complete overpower protection of the PA is realized.

Description

technical field [0001] The present invention relates to the field of communication technology, in particular to a power amplifier (PA) overpower protection method and device. Background technique [0002] TD-SCDMA and TD-LTE are the current mainstream 3G and 4G wireless communication technology standards. In the wireless communication system networking, the power amplifier (PA) used in the base station equipment is an important device to ensure seamless system coverage and reasonable cost performance. How to protect the PA to the greatest extent and prolong the service life of the PA is one of the technical issues that various wireless communication equipment manufacturers and operators focus on. [0003] In the prior art, the high-power amplifier used in the base station equipment of the wireless communication system works at a frequency of about GHZ, the rated output power is above 40dbm, and the gain characteristic at the rated output power is also above 40db, which is re...

Claims

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Application Information

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IPC IPC(8): H03F1/52H03F3/20
CPCH04B7/005H03F1/52H03F3/24
Inventor 耿贵杰段滔孙华荣王新生
Owner DATANG MOBILE COMM EQUIP CO LTD
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