Title:
PA PREDISTORTION METHOD AND APPARATUS, DEVICE AND CHIP
Document Type and Number:
WIPO Patent Application WO/2024/120093
Kind Code:
A1
Abstract:
Disclosed in embodiments of the present application are a PA predistortion method and apparatus, a device, and a chip. The PA predistortion method comprises: inputting a multi-band concurrent signal into a digital predistortion model corresponding to a PA for multi-frequency DPD and multi-frequency signal compensation to obtain at least two compensation branch signals, wherein the PA comprises at least two branch PAs, the at least two compensation branch signals are respectively inputted into corresponding branch PAs, and the multi-frequency DPD comprises correcting the nonlinearity of the PA between multiple frequency bands and pre-correcting the nonlinearity of at least one branch PA to be compensated; and on the basis of a feedback signal and an input/output signal corresponding to the multi-frequency DPD, using the digital predistortion model to extract a DPD parameter corresponding to the multi-frequency DPD, and updating the DPD parameter, wherein the feedback signal is obtained on the basis of an output signal of the PA.
Inventors:
DENG SENYANG (CN)
ZHANG ZUOFENG (CN)
NING DONGFANG (CN)
LI YUNHUA (CN)
DU WENHAO (CN)
KANG XIN (CN)
LIN ZEYU (CN)
ZHANG ZUOFENG (CN)
NING DONGFANG (CN)
LI YUNHUA (CN)
DU WENHAO (CN)
KANG XIN (CN)
LIN ZEYU (CN)
Application Number:
PCT/CN2023/129694
Publication Date:
June 13, 2024
Filing Date:
November 03, 2023
Export Citation:
Assignee:
ZTE CORP (CN)
International Classes:
H03F1/32
Domestic Patent References:
| WO2018137184A1 | 2018-08-02 |
Foreign References:
| CN112953409A | 2021-06-11 | |||
| CN112073343A | 2020-12-11 | |||
| CN112543156A | 2021-03-23 | |||
| CN114244292A | 2022-03-25 | |||
| US20120154041A1 | 2012-06-21 |
Attorney, Agent or Firm:
COHORIZON INTELLECTUAL PROPERTY INC. (CN)
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