Title:
DIGITAL PREDISTORTION POWER AMPLIFIER CALIBRATION METHOD AND SYSTEM AND DIGITAL PREDISTORTION APPARATUS
Document Type and Number:
WIPO Patent Application WO/2019/192054
Kind Code:
A1
Abstract:
The present invention relates to a digital predistortion power amplifier calibration method and system and a digital predistortion apparatus. The digital predistortion power amplifier calibration method comprises: acquiring, according to input power and feedback power of a test signal after calibration, a reference value for calibration of a useful signal; acquiring, according to real-time input power and real-time feedback power of the useful signal, a real-time target value for calibration of the useful signal; and comparing the reference value with the real-time target value, and controlling in real time attenuation of a first digitally controlled attenuator according to the comparison result, to calibrate a digital predistortion power amplifier for the useful signal passing through the first digitally controlled attenuator. This method enables real-time loop control of useful signals without relying on other instruments, improving the versatility of calibration methods for useful signals.
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Inventors:
DENG HAILONG (CN)
ZHANG HUI (CN)
ZHANG YUWEN (CN)
ZHANG HUI (CN)
ZHANG YUWEN (CN)
Application Number:
PCT/CN2018/086753
Publication Date:
October 10, 2019
Filing Date:
May 14, 2018
Export Citation:
Assignee:
COMBA TELECOM SYSTEMS CHINA LTD (CN)
COMBA TELECOM SYSTEMS GUANGZHOU LTD (CN)
COMBA TELECOM TECH GUANGZHOU (CN)
TIANJIN COMBA TELECOM SYSTEMS LTD (CN)
COMBA TELECOM SYSTEMS GUANGZHOU LTD (CN)
COMBA TELECOM TECH GUANGZHOU (CN)
TIANJIN COMBA TELECOM SYSTEMS LTD (CN)
International Classes:
H03F1/32; H04L25/49
Foreign References:
| CN206349988U | 2017-07-21 | |||
| CN103634890A | 2014-03-12 | |||
| CN102413085A | 2012-04-11 | |||
| US9190964B2 | 2015-11-17 | |||
| US9825657B2 | 2017-11-21 |
Attorney, Agent or Firm:
ADVANCE CHINA IP LAW OFFICE (CN)
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