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A dpd execution method, device and system

An execution method and execution unit technology, applied in the field of communication, can solve problems such as real-time matching of signal power, abnormal operation of power amplifiers, and burnout

Active Publication Date: 2020-05-26
DATANG MOBILE COMM EQUIP CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, in the FDD system, since the power of the service signal changes in real time, it is possible to use the low-power training sequence (TR) as DPD and configure the generated LUT, and suddenly receive a high-power signal. The power of the signal cannot match the LUT, so it may cause the power amplifier to be burned
[0004] To sum up, the LUT generated by training using the existing DPD implementation method cannot match the signal power of the user equipment (UserEquipment, UE) in real time, which may easily cause the power amplifier in the remote radio unit (Remote Radio Unit, RRU) to work abnormally or burn

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  • A dpd execution method, device and system
  • A dpd execution method, device and system
  • A dpd execution method, device and system

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Embodiment Construction

[0072] Embodiments of the present invention provide a DPD execution method, device and system, which are used to match the LUT generated by DPD training with the signal power of the UE in real time, so as to avoid abnormal operation or burning of the power amplifier in the RRU.

[0073] In order to make the object, technical solution and advantages of the present invention clearer, the present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described here are only used to explain the present invention, not to limit the present invention.

[0074] see figure 1 , a DPD execution method provided by an embodiment of the present invention, including:

[0075] S101. For each preset channel that needs to execute DPD, perform a DPD process for the channel;

[0076] Wherein, the preset channels that need to execute DPD may be all the channels in the RRU, or may be ...

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Abstract

The invention discloses a DPD execution method, device and system in order to make signal power of an LUT and UE which is generated through DPD training match in real time and avoid an abnormal power amplification and burning of an RRU. The DPD execution method comprises steps of executing a DPD process on each channel which is preset and needs to execute DPD, collecting a training sequence TR which is matched with current signal power of the UE in the channel, and determining whether to execute the DPD process by re-targeting the channel according to the TR. The DPD execution process comprises steps of collecting the TR matched with the current signal power of the UE in the channel, collecting a feedback sequence FB corresponding to the TR after obtaining the TR, calculating a DPD coefficient according to the TR and the FB, and updating a calculated DPD coefficient into a look-up table LUT corresponding to the channel.

Description

technical field [0001] The present invention relates to the field of communication technologies, and in particular to a digital pre-distortion (Digital Pre-Distortion, DPD) execution method, device and system. Background technique [0002] The DPD scheme in the existing frequency division duplex (Frequency Division Duplex, FDD) system, the trigger condition of DPD is to follow the trigger scheme in the time division duplex (Time Division Duplex, TDD) system, that is, the trigger condition of DPD is the driving trigger , where the driving trigger can be divided into cell establishment trigger, temperature change trigger, DPD failure re-trigger and other ways. [0003] According to the prior art, after a DPD process is completed and a corresponding user look-up table (Look Up Table, LUT) is configured, the DPD process will not be triggered again if the above driving trigger condition is not met. However, in the FDD system, since the power of the service signal changes in real...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04L12/26H04L12/24H04L25/49
CPCH04L25/49H04L41/0631H04L43/16
Inventor 黄传义李丁一徐永德孙华荣周应学笪禹
Owner DATANG MOBILE COMM EQUIP CO LTD