CN1689295A - 一种宽带预失真线性化的方法与系统 - Google Patents

一种宽带预失真线性化的方法与系统 Download PDF

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Publication number
CN1689295A
CN1689295A CNA028297865A CN02829786A CN1689295A CN 1689295 A CN1689295 A CN 1689295A CN A028297865 A CNA028297865 A CN A028297865A CN 02829786 A CN02829786 A CN 02829786A CN 1689295 A CN1689295 A CN 1689295A
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signal
amplifier
distortion
band
processing unit
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CN100550870C (zh
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刘晓伟
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ZTE Corp
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ZTE Corp
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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L27/00—Modulated-carrier systems
    • H04L27/32—Carrier systems characterised by combinations of two or more of the types covered by groups H04L27/02, H04L27/10, H04L27/18 or H04L27/26
    • H04L27/34—Amplitude- and phase-modulated carrier systems, e.g. quadrature-amplitude modulated carrier systems
    • H04L27/36—Modulator circuits; Transmitter circuits
    • H04L27/366—Arrangements for compensating undesirable properties of the transmission path between the modulator and the demodulator
    • H04L27/367—Arrangements for compensating undesirable properties of the transmission path between the modulator and the demodulator using predistortion
    • H04L27/368—Arrangements for compensating undesirable properties of the transmission path between the modulator and the demodulator using predistortion adaptive predistortion
    • 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
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03F—AMPLIFIERS
    • H03F2201/00—Indexing scheme relating to details of amplifiers with only discharge tubes, only semiconductor devices or only unspecified devices as amplifying elements covered by H03F1/00
    • H03F2201/32—Indexing scheme relating to modifications of amplifiers to reduce non-linear distortion
    • H03F2201/3209—Indexing scheme relating to modifications of amplifiers to reduce non-linear distortion the amplifier comprising means for compensating memory effects
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03F—AMPLIFIERS
    • H03F2201/00—Indexing scheme relating to details of amplifiers with only discharge tubes, only semiconductor devices or only unspecified devices as amplifying elements covered by H03F1/00
    • H03F2201/32—Indexing scheme relating to modifications of amplifiers to reduce non-linear distortion
    • H03F2201/3233—Adaptive predistortion using lookup table, e.g. memory, RAM, ROM, LUT, to generate the predistortion

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  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Power Engineering (AREA)
  • Nonlinear Science (AREA)
  • Pure & Applied Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Mathematical Analysis (AREA)
  • Mathematical Optimization (AREA)
  • Algebra (AREA)
  • Signal Processing (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Amplifiers (AREA)
  • Transmitters (AREA)
  • Digital Transmission Methods That Use Modulated Carrier Waves (AREA)
  • Luminescent Compositions (AREA)
  • Signal Processing For Digital Recording And Reproducing (AREA)
  • Semiconductor Lasers (AREA)

Abstract

一种宽带的数字预失真线性化方法和系统，用于克服射频功率放大器中记忆效应的影响，扩展数字预失真的线性化带宽，提高数字预失真的线性化性能，该方法和系统主要是根据放大器的特性参数，得到带内预失真信号和带外预失真信号；将所述带内预失真信号进行上变频，并将其与未经过上变频的带外预失真信号相加后作为输入信号输入给功率放大器；从功率放大器的输出取出的一部分作为反馈信号，将该反馈信号与原输入信号比较，并根据上述比较结果，自适应的调整用以产生带内预失真信号和带外预失真信号的放大器特性参数，以使反馈信号与原输入信号在时域波形上或频谱上尽量接近。

Description

PCT国内申请，说明书已公开。

Claims (1)

  1. PCT国内申请，权利要求书已公开。
CNB028297865A 2002-10-31 2002-10-31 一种宽带预失真线性化的方法与系统 Expired - Fee Related CN100550870C (zh)

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PCT/CN2002/000774 WO2004040870A1 (fr) 2002-10-31 2002-10-31 Procede et systeme de linearisation par distorsion prealable de bande passante

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CN100550870C CN100550870C (zh) 2009-10-14

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US (1) US7583754B2 (zh)
EP (1) EP1573993B1 (zh)
JP (1) JP4091047B2 (zh)
CN (1) CN100550870C (zh)
AT (1) ATE455422T1 (zh)
AU (1) AU2002344035A1 (zh)
DE (1) DE60235127D1 (zh)
WO (1) WO2004040870A1 (zh)

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WO2013170622A1 (zh) * 2012-05-16 2013-11-21 京信通信系统（中国）有限公司 一种射频信号的控制方法和设备
CN103650444A (zh) * 2013-06-28 2014-03-19 华为技术有限公司 一种辨识方法、装置、系统及基站
CN104170249A (zh) * 2012-04-19 2014-11-26 英特尔公司 利用有效功率管理的信号放大器
CN104639480A (zh) * 2013-11-11 2015-05-20 华为技术有限公司 一种频分双工基站的信号发射方法、装置和系统
WO2016078038A1 (zh) * 2014-11-19 2016-05-26 华为技术有限公司 一种预失真处理的装置及方法
CN103248597B (zh) * 2013-05-17 2017-02-22 上海无线通信研究中心 基于参考信号的自适应数字预失真系统及初始化校正方法
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CN107040221A (zh) * 2016-02-03 2017-08-11 福建省北峰电讯科技有限公司 一种数字预失真功放线性化装置及其计算方法
CN108988935A (zh) * 2018-08-21 2018-12-11 清华大学 非线性功放约束下的星地协同信号传输方法及装置
CN110402442A (zh) * 2018-02-12 2019-11-01 华为技术有限公司 一种指纹录入方法及终端
CN111147412A (zh) * 2019-12-25 2020-05-12 三维通信股份有限公司 预失真处理装置、信号传输系统和预失真处理方法
CN111669132A (zh) * 2020-06-12 2020-09-15 西安烽火电子科技有限责任公司 一种提高短波数字预失真处理索引精度的方法
CN113037224A (zh) * 2019-12-25 2021-06-25 珠海全志科技股份有限公司 跳频数字预失真训练装置、方法和跳频数字预失真装置
CN113054917A (zh) * 2019-12-26 2021-06-29 赛普拉斯半导体公司 校正非线性功率放大器的失真的方法和系统、预失真部件
CN113098406A (zh) * 2019-12-23 2021-07-09 亚德诺半导体国际无限责任公司 用于补偿功率半导体器件中窄带失真的系统和方法
CN113162559A (zh) * 2021-03-30 2021-07-23 西南电子技术研究所（中国电子科技集团公司第十研究所） 毫米波自适应预失真线性化固态功放
CN113949350A (zh) * 2021-10-20 2022-01-18 上海大学 基于基带-射频联合优化的数字预失真方法及系统

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