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WO2018192252A8 - Digital pre-distortion processing method and apparatus - Google Patents

Digital pre-distortion processing method and apparatus Download PDF

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Publication number
WO2018192252A8
WO2018192252A8 PCT/CN2017/117525 CN2017117525W WO2018192252A8 WO 2018192252 A8 WO2018192252 A8 WO 2018192252A8 CN 2017117525 W CN2017117525 W CN 2017117525W WO 2018192252 A8 WO2018192252 A8 WO 2018192252A8
Authority
WO
WIPO (PCT)
Prior art keywords
acquired
threshold value
signal
distortion
set threshold
Prior art date
Application number
PCT/CN2017/117525
Other languages
French (fr)
Chinese (zh)
Other versions
WO2018192252A1 (en
Inventor
吴卓智
刁穗东
姜成玉
Original Assignee
京信通信系统（中国）有限公司
京信通信系统（广州）有限公司
京信通信技术(广州)有限公司
天津京信通信系统有限公司
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by 京信通信系统（中国）有限公司, 京信通信系统（广州）有限公司, 京信通信技术(广州)有限公司, 天津京信通信系统有限公司 filed Critical 京信通信系统（中国）有限公司
Publication of WO2018192252A1 publication Critical patent/WO2018192252A1/en
Publication of WO2018192252A8 publication Critical patent/WO2018192252A8/en

Links

Classifications

    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03F—AMPLIFIERS
    • H03F1/00—Details of amplifiers with only discharge tubes, only semiconductor devices or only unspecified devices as amplifying elements
    • H03F1/32—Modifications of amplifiers to reduce non-linear distortion
    • H03F1/3241—Modifications of amplifiers to reduce non-linear distortion using predistortion circuits
    • H03F1/3247—Modifications of amplifiers to reduce non-linear distortion using predistortion circuits using feedback acting on predistortion circuits
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03F—AMPLIFIERS
    • H03F1/00—Details of amplifiers with only discharge tubes, only semiconductor devices or only unspecified devices as amplifying elements
    • H03F1/32—Modifications of amplifiers to reduce non-linear distortion
    • H03F1/3241—Modifications of amplifiers to reduce non-linear distortion using predistortion circuits
    • H03F1/3258—Modifications of amplifiers to reduce non-linear distortion using predistortion circuits based on polynomial terms

Landscapes

  • Physics & Mathematics (AREA)
  • Nonlinear Science (AREA)
  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Algebra (AREA)
  • General Physics & Mathematics (AREA)
  • Mathematical Analysis (AREA)
  • Mathematical Optimization (AREA)
  • Pure & Applied Mathematics (AREA)
  • Amplifiers (AREA)

Abstract

A digital pre-distortion processing method and apparatus, the method comprising: acquiring an input signal of a power amplifier and an output signal of the power amplifier (S201); updating a pre-distortion coefficient, according to the acquired input signal and the acquired output signal, when it is determined that the acquired input signal meets a set threshold value (S202); then, determining a fitting error according to the updated pre-distortion coefficient, the acquired input signal and the acquired output signal (S203); and finally, adjusting the set threshold value according to the fitting error and the adjacent frequency leakage ratio of the output signal after the pre-distortion coefficient is updated (S204). In the technical solution, the signal after the pre-distortion processing is acquired to determine a threshold value. The pre-distortion coefficient is updated and the set threshold value is adjusted using the acquired signal when it is determined that the acquired signal meets the set threshold value; therefore, determining the threshold value for the signal after the pre-distortion processing acquired next time using the adjusted set threshold value is more reflective of non-linear distortion characteristics, thereby improving the pre-distortion processing performance.
PCT/CN2017/117525 2017-04-20 2017-12-20 Digital pre-distortion processing method and apparatus WO2018192252A1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CN201710260788.3 2017-04-20
CN201710260788.3A CN107124144B (en) 2017-04-20 2017-04-20 Digital pre-distortion processing method and device

Publications (2)

Publication Number Publication Date
WO2018192252A1 WO2018192252A1 (en) 2018-10-25
WO2018192252A8 true WO2018192252A8 (en) 2019-03-21

Family

ID=59724756

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/CN2017/117525 WO2018192252A1 (en) 2017-04-20 2017-12-20 Digital pre-distortion processing method and apparatus

Country Status (2)

Country Link
CN (1) CN107124144B (en)
WO (1) WO2018192252A1 (en)

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN107124144B (en) * 2017-04-20 2020-02-18 京信通信系统（中国）有限公司 Digital pre-distortion processing method and device
CN107994923B (en) * 2017-11-03 2019-11-12 京信通信系统（中国）有限公司 Ultra-broadband digital pre-distortion method, device and system
CN108988290B (en) * 2018-09-28 2024-10-01 天津众智创新科技有限公司 Intelligent circuit breaker control circuit with tripping threshold value adjusting function
US10892786B1 (en) * 2019-10-17 2021-01-12 Analog Devices International Unlimited Company Digital predistortion with out-of-band and peak expansion regularization
CN111131104B (en) * 2019-12-12 2022-12-06 京信网络系统股份有限公司 Pre-distortion processing method, device, storage medium and equipment

Family Cites Families (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101789923B (en) * 2009-12-30 2012-10-31 京信通信系统（中国）有限公司 Digital pre-distortion power amplifying system and method thereof for processing signals
US8903015B2 (en) * 2010-11-22 2014-12-02 Samsung Electronics Co., Ltd. Apparatus and method for digital predistortion of non-linear amplifiers
CN102437994B (en) * 2012-01-19 2014-05-21 电信科学技术研究院 Crest clipping method and equipment for multiband broadband signal
CN103296978B (en) * 2012-02-28 2016-03-16 京信通信系统（中国）有限公司 A kind of digital pre-distortion method and device
CN103888394B (en) * 2012-12-20 2017-05-24 京信通信系统（中国）有限公司 Digital-pre-distortion processing method and device
CN103957179B (en) * 2014-04-04 2018-04-20 京信通信系统（中国）有限公司 DPD method and systems
US9270504B2 (en) * 2014-07-28 2016-02-23 Mitsubishi Electric Research Laboratories, Inc. System and method for linearizing power amplifiers
CN104580042B (en) * 2014-12-08 2017-12-05 大唐移动通信设备有限公司 A kind of method and apparatus of digital pre-distortion
CN104601511B (en) * 2014-12-29 2018-02-02 大唐移动通信设备有限公司 A kind of Multirate despicking method and device
CN104869091A (en) * 2015-04-29 2015-08-26 大唐移动通信设备有限公司 Method and system for training digital predistortion coefficient
US9509541B1 (en) * 2015-08-10 2016-11-29 Altiostar Networks, Inc. Crest factor reduction
CN105763503B (en) * 2016-04-25 2019-11-19 京信通信系统（中国）有限公司 A kind of digital pre-distortion processing method and device
CN107124144B (en) * 2017-04-20 2020-02-18 京信通信系统（中国）有限公司 Digital pre-distortion processing method and device

Also Published As

Publication number Publication date
WO2018192252A1 (en) 2018-10-25
CN107124144B (en) 2020-02-18
CN107124144A (en) 2017-09-01

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