SE520466C2 - Metod och anordning vid en digital linjäriseringskoppling - Google Patents
Metod och anordning vid en digital linjäriseringskopplingInfo
- Publication number
- SE520466C2 SE520466C2 SE0103745A SE0103745A SE520466C2 SE 520466 C2 SE520466 C2 SE 520466C2 SE 0103745 A SE0103745 A SE 0103745A SE 0103745 A SE0103745 A SE 0103745A SE 520466 C2 SE520466 C2 SE 520466C2
- Authority
- SE
- Sweden
- Prior art keywords
- digital
- signal
- complex
- gain
- power
- Prior art date
Links
- 238000000034 method Methods 0.000 title claims description 54
- 230000006870 function Effects 0.000 claims abstract description 81
- 230000004044 response Effects 0.000 claims abstract description 56
- 230000003044 adaptive effect Effects 0.000 claims abstract description 20
- 238000012512 characterization method Methods 0.000 claims abstract description 8
- 238000004519 manufacturing process Methods 0.000 claims abstract description 5
- 238000004364 calculation method Methods 0.000 claims description 67
- 239000013598 vector Substances 0.000 claims description 58
- 238000012937 correction Methods 0.000 claims description 50
- 230000015654 memory Effects 0.000 claims description 42
- 238000011156 evaluation Methods 0.000 claims description 35
- 230000006978 adaptation Effects 0.000 claims description 30
- 238000005259 measurement Methods 0.000 claims description 25
- 238000003379 elimination reaction Methods 0.000 claims description 21
- 230000001419 dependent effect Effects 0.000 claims description 20
- 230000008030 elimination Effects 0.000 claims description 20
- 230000009467 reduction Effects 0.000 claims description 18
- 238000012545 processing Methods 0.000 claims description 17
- 230000003321 amplification Effects 0.000 claims description 15
- 238000003199 nucleic acid amplification method Methods 0.000 claims description 15
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- 238000005516 engineering process Methods 0.000 claims description 13
- 230000000694 effects Effects 0.000 claims description 12
- 238000009499 grossing Methods 0.000 claims description 7
- 230000001629 suppression Effects 0.000 claims description 6
- 230000003111 delayed effect Effects 0.000 claims 2
- 150000002500 ions Chemical class 0.000 claims 1
- 238000012544 monitoring process Methods 0.000 claims 1
- 230000003446 memory effect Effects 0.000 abstract description 11
- 238000010998 test method Methods 0.000 abstract description 3
- 238000004422 calculation algorithm Methods 0.000 description 46
- 238000001228 spectrum Methods 0.000 description 31
- 239000000243 solution Substances 0.000 description 23
- 238000004088 simulation Methods 0.000 description 16
- 239000011159 matrix material Substances 0.000 description 15
- 230000001934 delay Effects 0.000 description 13
- 230000006872 improvement Effects 0.000 description 12
- 238000013461 design Methods 0.000 description 11
- 230000008859 change Effects 0.000 description 8
- 238000005457 optimization Methods 0.000 description 8
- 238000013459 approach Methods 0.000 description 7
- 238000009795 derivation Methods 0.000 description 6
- 238000010586 diagram Methods 0.000 description 6
- 238000012360 testing method Methods 0.000 description 4
- 238000007792 addition Methods 0.000 description 3
- 230000008901 benefit Effects 0.000 description 3
- 238000010276 construction Methods 0.000 description 3
- 238000001914 filtration Methods 0.000 description 3
- 238000012821 model calculation Methods 0.000 description 3
- 230000002787 reinforcement Effects 0.000 description 3
- 230000003595 spectral effect Effects 0.000 description 3
- 230000006399 behavior Effects 0.000 description 2
- 230000009849 deactivation Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- 230000008707 rearrangement Effects 0.000 description 2
- 230000009897 systematic effect Effects 0.000 description 2
- 238000012546 transfer Methods 0.000 description 2
- 101100298295 Drosophila melanogaster flfl gene Proteins 0.000 description 1
- 241000750042 Vini Species 0.000 description 1
- 230000003213 activating effect Effects 0.000 description 1
- 230000004913 activation Effects 0.000 description 1
- 238000004458 analytical method Methods 0.000 description 1
- 230000001174 ascending effect Effects 0.000 description 1
- 239000003990 capacitor Substances 0.000 description 1
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- 230000009699 differential effect Effects 0.000 description 1
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- 238000011835 investigation Methods 0.000 description 1
- 238000012417 linear regression Methods 0.000 description 1
- 230000010363 phase shift Effects 0.000 description 1
- 238000003672 processing method Methods 0.000 description 1
- 238000007670 refining Methods 0.000 description 1
- 239000004065 semiconductor Substances 0.000 description 1
- 230000035945 sensitivity Effects 0.000 description 1
- 229910000679 solder Inorganic materials 0.000 description 1
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- 238000013519 translation Methods 0.000 description 1
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- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
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
- H03F1/3258—Modifications of amplifiers to reduce non-linear distortion using predistortion circuits based on polynomial terms
-
- 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
- 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
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)
- Compression, Expansion, Code Conversion, And Decoders (AREA)
- Testing Electric Properties And Detecting Electric Faults (AREA)
Priority Applications (14)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| SE0103745A SE520466C2 (sv) | 2001-11-12 | 2001-11-12 | Metod och anordning vid en digital linjäriseringskoppling |
| SE0202335A SE520728C2 (sv) | 2001-11-12 | 2002-07-29 | Förfarande för icke-linjär modellering |
| EP02780232A EP1446871B1 (de) | 2001-11-12 | 2002-10-29 | Digitale linearisierungs schaltung |
| US10/492,981 US7460613B2 (en) | 2001-11-12 | 2002-10-29 | Digital linearization circuit |
| DE60228873T DE60228873D1 (de) | 2001-11-12 | 2002-10-29 | Digitale linearisierungs schaltung |
| AT02780232T ATE408267T1 (de) | 2001-11-12 | 2002-10-29 | Digitale linearisierungs schaltung |
| ES02803140T ES2261785T3 (es) | 2001-11-12 | 2002-10-29 | Metodo de modelizacion no lineal. |
| CN02822374.8A CN1593005A (zh) | 2001-11-12 | 2002-10-29 | 非线性建模方法 |
| EP02803140A EP1446872B1 (de) | 2001-11-12 | 2002-10-29 | Verfahren zur nichtlinearen modellierung |
| DE60212687T DE60212687T2 (de) | 2001-11-12 | 2002-10-29 | Verfahren zur nichtlinearen modellierung |
| US10/494,662 US7091779B2 (en) | 2001-11-12 | 2002-10-29 | Non-linear modeling method |
| PCT/SE2002/001958 WO2003043183A1 (en) | 2001-11-12 | 2002-10-29 | Digital linearization circuit |
| AT02803140T ATE331337T1 (de) | 2001-11-12 | 2002-10-29 | Verfahren zur nichtlinearen modellierung |
| PCT/SE2002/001955 WO2003043182A1 (en) | 2001-11-12 | 2002-10-29 | Non-linear modeling method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| SE0103745A SE520466C2 (sv) | 2001-11-12 | 2001-11-12 | Metod och anordning vid en digital linjäriseringskoppling |
Publications (3)
| Publication Number | Publication Date |
|---|---|
| SE0103745D0 SE0103745D0 (sv) | 2001-11-12 |
| SE0103745L SE0103745L (sv) | 2003-05-13 |
| SE520466C2 true SE520466C2 (sv) | 2003-07-15 |
Family
ID=20285937
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| SE0103745A SE520466C2 (sv) | 2001-11-12 | 2001-11-12 | Metod och anordning vid en digital linjäriseringskoppling |
Country Status (6)
| Country | Link |
|---|---|
| US (1) | US7460613B2 (de) |
| EP (1) | EP1446871B1 (de) |
| AT (1) | ATE408267T1 (de) |
| DE (1) | DE60228873D1 (de) |
| SE (1) | SE520466C2 (de) |
| WO (1) | WO2003043183A1 (de) |
Families Citing this family (52)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6801086B1 (en) * | 2002-04-03 | 2004-10-05 | Andrew Corporation | Adaptive digital pre-distortion using amplifier model that incorporates frequency-dependent non-linearities |
| US8811917B2 (en) | 2002-05-01 | 2014-08-19 | Dali Systems Co. Ltd. | Digital hybrid mode power amplifier system |
| US8380143B2 (en) | 2002-05-01 | 2013-02-19 | Dali Systems Co. Ltd | Power amplifier time-delay invariant predistortion methods and apparatus |
| US7756421B2 (en) * | 2002-10-03 | 2010-07-13 | Ciena Corporation | Electrical domain compensation of non-linear effects in an optical communications system |
| US7071777B2 (en) * | 2003-12-02 | 2006-07-04 | Motorola, Inc. | Digital memory-based predistortion technique |
| DE102004008225B4 (de) * | 2004-02-19 | 2006-02-16 | Infineon Technologies Ag | Verfahren und Einrichtung zum Ermitteln von Merkmalsvektoren aus einem Signal zur Mustererkennung, Verfahren und Einrichtung zur Mustererkennung sowie computerlesbare Speichermedien |
| US7330073B2 (en) | 2004-10-06 | 2008-02-12 | Telefonaktiebolaget L M Ericsson (Publ) | Arbitrary waveform predistortion table generation |
| KR101261212B1 (ko) | 2004-10-26 | 2013-05-07 | 돌비 레버러토리즈 라이쎈싱 코오포레이션 | 오디오 신호 처리 방법 및 장치 |
| US7769103B2 (en) * | 2005-09-15 | 2010-08-03 | Powerwave Technologies, Inc. | Amplifier system employing analog polynomial predistortion with sub-nyquist digital adaptation |
| US20070110177A1 (en) * | 2005-11-14 | 2007-05-17 | Telefonaktiebolaget Lm Ericsson | RF power distribution in the frequency domain |
| US7873331B2 (en) * | 2006-06-04 | 2011-01-18 | Samsung Electro-Mechanics Company, Ltd. | Systems, methods, and apparatuses for multi-path orthogonal recursive predistortion |
| US7860466B2 (en) * | 2006-06-04 | 2010-12-28 | Samsung Electro-Mechanics Company, Ltd. | Systems, methods, and apparatuses for linear polar transmitters |
| US7518445B2 (en) * | 2006-06-04 | 2009-04-14 | Samsung Electro-Mechanics Company, Ltd. | Systems, methods, and apparatuses for linear envelope elimination and restoration transmitters |
| US7729419B1 (en) * | 2006-11-24 | 2010-06-01 | Kiomars Anvari | Reconditioning equalizer filter using convolution |
| US7729420B1 (en) * | 2006-11-24 | 2010-06-01 | Kiomars Anvari | Reconditioning equalizer filter for OFDM and non-OFDM signals |
| WO2008078195A2 (en) * | 2006-12-26 | 2008-07-03 | Dali Systems Co., Ltd. | Method and system for baseband predistortion linearization in multi-channel wideband communication systems |
| US7760816B2 (en) * | 2007-01-11 | 2010-07-20 | Freescale Semiconductor, Inc. | Automatic gain control using multiple equalized estimates dynamic hysteresis |
| US7787564B1 (en) * | 2007-03-13 | 2010-08-31 | Kiomars Anvari | Combined peak reduction equalizer and phase/amplitude pre-distortion |
| US7899416B2 (en) * | 2007-11-14 | 2011-03-01 | Crestcom, Inc. | RF transmitter with heat compensation and method therefor |
| US8238860B2 (en) * | 2008-01-23 | 2012-08-07 | Freescale Semiconductor, Inc. | Tuning a second order intercept point of a mixer in a receiver |
| US8594232B2 (en) * | 2008-06-21 | 2013-11-26 | Vyycore Corporation | System for predistortion and post-distortion correction of both a receiver and transmitter during calibration |
| US8456949B2 (en) * | 2008-12-03 | 2013-06-04 | Pgs Geophysical As | Method for determining signal quality in dual sensor seismic streamer signals |
| US7982985B1 (en) * | 2009-04-17 | 2011-07-19 | Marvell International Ltd. | Method and apparatus for adapting a finite impulse response equalizer in a hard disk drive read channel |
| FR2948835B1 (fr) * | 2009-07-30 | 2017-02-10 | Groupe Des Ecoles Des Telecommunications - Ecole Nat Superieure Des Telecommunications | Correction des defauts analogiques dans des convertisseurs analogiques/numeriques paralleles, notamment pour des applications multistandards, radio logicielle et/ou radio-cognitive. |
| US8437424B2 (en) * | 2010-03-05 | 2013-05-07 | Texas Instruments Incorporated | Robust transmit/feedback alignment |
| CN103597807B (zh) | 2010-09-14 | 2015-09-30 | 大理系统有限公司 | 远程可重新配置的分布式天线系统和方法 |
| US8644437B2 (en) * | 2011-01-07 | 2014-02-04 | Massachusetts Institute Of Technology | Digital compensation of a nonlinear system |
| US8964901B2 (en) | 2011-01-07 | 2015-02-24 | Massachusetts Institute Of Technology | Analog/digital co-design methodology to achieve high linearity and low power dissipation in a radio frequency (RF) receiver |
| US8792583B2 (en) * | 2011-05-12 | 2014-07-29 | Andrew Llc | Linearization in the presence of phase variations |
| US20130166259A1 (en) * | 2011-11-17 | 2013-06-27 | Analog Devices, Inc. | System linearization |
| US9262566B2 (en) * | 2012-03-09 | 2016-02-16 | The Mathworks, Inc. | Fast simulation of a radio frequency circuit |
| US8633769B2 (en) * | 2012-03-15 | 2014-01-21 | Telefonaktiebolaget L M Ericsson (Publ) | Dual loop adaptation digital predistortion architecture for power amplifiers |
| US8965290B2 (en) * | 2012-03-29 | 2015-02-24 | General Electric Company | Amplitude enhanced frequency modulation |
| US8958470B2 (en) | 2012-07-26 | 2015-02-17 | Massachusetts Institute Of Technology | Method and apparatus for sparse polynomial equalization of RF receiver chains |
| CN102984099B (zh) * | 2012-11-23 | 2015-09-02 | 陕西理工学院 | 数字预失真分数时延估计与信号对齐方法和系统 |
| CN103001900B (zh) * | 2012-12-11 | 2015-08-05 | 华为技术有限公司 | 发射机的发射通道间干扰消除方法及装置 |
| US9065425B2 (en) | 2013-03-14 | 2015-06-23 | Telefonaktiebolaget L M Ericsson (Publ) | Feed-forward linearization without phase shifters |
| US9172334B2 (en) * | 2013-05-09 | 2015-10-27 | King Fahd University Of Petroleum And Minerals | Digital predistortion system and method with extended correction bandwidth |
| US9595982B2 (en) | 2013-05-20 | 2017-03-14 | Analog Devices, Inc. | Relaxed digitization system linearization |
| TWI523442B (zh) | 2013-11-22 | 2016-02-21 | Compensation Method of Power Amplification Unit for Radio Frequency Module | |
| US9374112B2 (en) * | 2014-09-02 | 2016-06-21 | Texas Instruments Incorporated | Capture selection for digital pre-distortion adaptation and capture concatenation for frequency hopping pre-distortion adaptation |
| US10298349B2 (en) * | 2014-12-22 | 2019-05-21 | Telefonaktiebolaget Lm Ericsson (Publ) | Receive supervision method and radio unit |
| US10033413B2 (en) * | 2016-05-19 | 2018-07-24 | Analog Devices Global | Mixed-mode digital predistortion |
| US10224970B2 (en) | 2016-05-19 | 2019-03-05 | Analog Devices Global | Wideband digital predistortion |
| EP3306817B8 (de) * | 2016-10-07 | 2021-04-21 | Rohde & Schwarz GmbH & Co. KG | Vorverzerrungssystem und -verfahren |
| CN107659273B (zh) * | 2017-09-26 | 2021-02-09 | 东南大学 | 毫米波宽带功率放大器的可重构数字预失真系统及方法 |
| US10666277B2 (en) * | 2018-07-23 | 2020-05-26 | Georgia Tech Research Corporation | Methods and devices for input signal conversion simulation |
| CN109274345B (zh) * | 2018-11-14 | 2023-11-03 | 上海艾为电子技术股份有限公司 | 一种信号处理方法、装置和系统 |
| US20210018561A1 (en) * | 2019-07-19 | 2021-01-21 | Rohde & Schwarz Gmbh & Co. Kg | Measurement system and method for automated measurement of several contributions to signal degradation |
| EP4052371A4 (de) * | 2019-10-29 | 2023-08-09 | Telefonaktiebolaget Lm Ericsson (Publ) | Rekursive linearisierung eines nichtlinearen modells für ein elektronisches gerät |
| CN118764040B (zh) * | 2024-07-11 | 2025-05-30 | 江苏星宇芯联电子科技有限公司 | 超大动态高性能接收机系统 |
| CN121356579A (zh) * | 2025-12-17 | 2026-01-16 | 深圳市斯帕克电气有限公司 | 基于软件算法的ADC50Hz或60Hz噪声滤除方法 |
Family Cites Families (19)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4291277A (en) | 1979-05-16 | 1981-09-22 | Harris Corporation | Adaptive predistortion technique for linearizing a power amplifier for digital data systems |
| GB2193588B (en) * | 1986-08-04 | 1990-07-25 | Gec General Signal Ltd | Track circuit signalling arrangement |
| US5203823A (en) * | 1989-02-28 | 1993-04-20 | Mitsubishi Denki Kabushiki Kaisha | Detecting apparatus |
| US5272721A (en) * | 1990-02-14 | 1993-12-21 | Nobuo Mikoshiba | Spread spectrum receiving device |
| US5049832A (en) | 1990-04-20 | 1991-09-17 | Simon Fraser University | Amplifier linearization by adaptive predistortion |
| JP2831122B2 (ja) * | 1990-11-29 | 1998-12-02 | クラリオン株式会社 | スペクトラム拡散通信方式 |
| JPH06224879A (ja) * | 1993-01-22 | 1994-08-12 | Mitsui Mining & Smelting Co Ltd | スペクトラム拡散通信用送信機および該送信機用ｌｓｉ |
| JP2741336B2 (ja) * | 1993-11-26 | 1998-04-15 | エヌ・ティ・ティ移動通信網株式会社 | 帯域拡散信号受信機の周波数誤差補正装置 |
| US5485120A (en) | 1994-07-28 | 1996-01-16 | Aval Communications Inc. | Feed-forward power amplifier system with adaptive control and control method |
| US5856998A (en) * | 1994-09-09 | 1999-01-05 | Omnipoint Corporation | Method and apparatus for correlating a continuous phase modulated spread spectrum signal |
| JPH0897748A (ja) * | 1994-09-22 | 1996-04-12 | Toyota Central Res & Dev Lab Inc | スペクトラム拡散通信用受信機 |
| US6005903A (en) * | 1996-07-08 | 1999-12-21 | Mendelovicz; Ephraim | Digital correlator |
| US5898338A (en) * | 1996-09-20 | 1999-04-27 | Spectrian | Adaptive digital predistortion linearization and feed-forward correction of RF power amplifier |
| US5923712A (en) * | 1997-05-05 | 1999-07-13 | Glenayre Electronics, Inc. | Method and apparatus for linear transmission by direct inverse modeling |
| US5959500A (en) | 1998-01-26 | 1999-09-28 | Glenayre Electronics, Inc. | Model-based adaptive feedforward amplifier linearizer |
| US6246286B1 (en) * | 1999-10-26 | 2001-06-12 | Telefonaktiebolaget Lm Ericsson | Adaptive linearization of power amplifiers |
| US6741662B1 (en) * | 2000-04-17 | 2004-05-25 | Intel Corporation | Transmitter linearization using fast predistortion |
| US6545535B2 (en) * | 2000-10-12 | 2003-04-08 | Telefonaktiebolaget Lm Ericsson (Publ) | Method and apparatus for reducing distortion |
| US7277538B2 (en) * | 2000-10-27 | 2007-10-02 | Tandberg Telecom As | Distortion compensation in an acoustic echo canceler |
-
2001
- 2001-11-12 SE SE0103745A patent/SE520466C2/sv not_active IP Right Cessation
-
2002
- 2002-10-29 WO PCT/SE2002/001958 patent/WO2003043183A1/en not_active Ceased
- 2002-10-29 AT AT02780232T patent/ATE408267T1/de not_active IP Right Cessation
- 2002-10-29 US US10/492,981 patent/US7460613B2/en not_active Expired - Lifetime
- 2002-10-29 EP EP02780232A patent/EP1446871B1/de not_active Expired - Lifetime
- 2002-10-29 DE DE60228873T patent/DE60228873D1/de not_active Expired - Lifetime
Also Published As
| Publication number | Publication date |
|---|---|
| ATE408267T1 (de) | 2008-09-15 |
| SE0103745D0 (sv) | 2001-11-12 |
| DE60228873D1 (de) | 2008-10-23 |
| SE0103745L (sv) | 2003-05-13 |
| EP1446871A1 (de) | 2004-08-18 |
| US7460613B2 (en) | 2008-12-02 |
| WO2003043183A1 (en) | 2003-05-22 |
| US20040247042A1 (en) | 2004-12-09 |
| EP1446871B1 (de) | 2008-09-10 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| NUG | Patent has lapsed |