CA2200387A1 - Method of correcting nonlinearities of an amplifier, and radio transmitter employing a method of this type - Google Patents
Method of correcting nonlinearities of an amplifier, and radio transmitter employing a method of this typeInfo
- Publication number
- CA2200387A1 CA2200387A1 CA002200387A CA2200387A CA2200387A1 CA 2200387 A1 CA2200387 A1 CA 2200387A1 CA 002200387 A CA002200387 A CA 002200387A CA 2200387 A CA2200387 A CA 2200387A CA 2200387 A1 CA2200387 A1 CA 2200387A1
- Authority
- CA
- Canada
- Prior art keywords
- signal
- amplifier
- complex
- order
- demodulated
- Prior art date
- Legal status (The legal status 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 status listed.)
- Granted
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
- H03F1/3282—Acting on the phase and the amplitude of the input signal
-
- 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
- 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
- H03F2200/00—Indexing scheme relating to amplifiers
- H03F2200/438—Separate feedback of amplitude and phase signals being present
-
- 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
Abstract
In order to correct nonlinearities of an amplifier (20) which receives a radio signal (d') and produces an amplified radio signal representing an input complex digital signal (m), a predistortion table, associating a value of a predistorted complex digital signal with each value of the input complex digital signal, is stored, and the predistorted complex signal (d) is modulated in order to obtain the radio signal addressed to the amplifier. In an adaptation period, a fraction (r') of the amplified radio signal is demodulated in order to obtain a demodulated complex signal (r) which is compared with the input complex signal, with which the predistorted complex signal modulated in said adaptation period is associated, in order to update the predistortion table. The predistortion table is updated on the basis of mean values calculated from blocks of samples of the input complex signal and of the demodulated complex signal, which are stored in the adaptation period.
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR9603617A FR2746564B1 (en) | 1996-03-22 | 1996-03-22 | METHOD FOR CORRECTING NON-LINEARITIES OF AN AMPLIFIER, AND RADIO TRANSMITTER IMPLEMENTING SUCH A METHOD |
FRFR9603617 | 1996-03-22 |
Publications (2)
Publication Number | Publication Date |
---|---|
CA2200387A1 true CA2200387A1 (en) | 1997-09-22 |
CA2200387C CA2200387C (en) | 2004-06-22 |
Family
ID=9490462
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
CA002200387A Expired - Fee Related CA2200387C (en) | 1996-03-22 | 1997-03-19 | Method of correcting nonlinearities of an amplifier, and radio transmitter employing a method of this type |
Country Status (9)
Country | Link |
---|---|
US (1) | US5903611A (en) |
EP (1) | EP0797294B1 (en) |
JP (1) | JPH1032435A (en) |
AT (1) | ATE213108T1 (en) |
AU (1) | AU711697B2 (en) |
CA (1) | CA2200387C (en) |
DE (1) | DE69710235T2 (en) |
FR (1) | FR2746564B1 (en) |
TW (1) | TW332365B (en) |
Families Citing this family (66)
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US6141541A (en) * | 1997-12-31 | 2000-10-31 | Motorola, Inc. | Method, device, phone and base station for providing envelope-following for variable envelope radio frequency signals |
FI105506B (en) * | 1998-04-30 | 2000-08-31 | Nokia Networks Oy | Linearization procedure for amplifiers and amplifier arrangements |
GB9811381D0 (en) * | 1998-05-27 | 1998-07-22 | Nokia Mobile Phones Ltd | Predistortion control for power reduction |
JP3360029B2 (en) * | 1998-07-13 | 2002-12-24 | 松下電器産業株式会社 | Distortion compensation address generator, distortion compensation circuit and transmitter with transmission distortion compensation |
KR100326176B1 (en) * | 1998-08-06 | 2002-04-17 | 윤종용 | Apparatus and method for linearizing power amplification using predistortion and feedfoward method in rf communicaiton |
US6088399A (en) * | 1998-11-24 | 2000-07-11 | Motorola, Inc. | Multi-mode transmitter and receiver |
US6275685B1 (en) * | 1998-12-10 | 2001-08-14 | Nortel Networks Limited | Linear amplifier arrangement |
GB2345599A (en) * | 1998-12-23 | 2000-07-12 | Nokia Mobile Phones Ltd | A baseband predistorter for a transmitter with combined downconversion and demodulation in the feedback path |
US6449466B1 (en) * | 1998-12-30 | 2002-09-10 | Samsung Electronics Co., Ltd. | Adaptive digital pre-distortion correction circuit for use in a transmitter in a digital communication system and method of operation |
JP3185778B2 (en) | 1999-02-10 | 2001-07-11 | 日本電気株式会社 | Active matrix type liquid crystal display device, its manufacturing method and its driving method |
FI107100B (en) | 1999-03-26 | 2001-05-31 | Nokia Networks Oy | Correction of an I / Q modulator phase and amplitude imbalance |
FI990680A (en) * | 1999-03-26 | 2000-09-27 | Nokia Networks Oy | I / Q modulator non-linearity correction |
GB2349994B (en) * | 1999-05-10 | 2003-06-04 | Intek Global Technologies Ltd | Apparatus for producing a radio-frequency signal |
US7327779B1 (en) * | 1999-07-23 | 2008-02-05 | Agilent Technologies, Inc. | Method and apparatus for high-speed software reconfigurable code division multiple access communication |
EP1199814B1 (en) * | 1999-07-28 | 2006-09-13 | Fujitsu Limited | Radio device with distortion compensation |
WO2001008320A1 (en) * | 1999-07-28 | 2001-02-01 | Fujitsu Limited | Method and apparatus for distortion compensation of radio device |
DE19943957C1 (en) * | 1999-09-14 | 2001-04-12 | Bosch Gmbh Robert | Method for linearizing a high-frequency amplifier |
DE69932723T2 (en) * | 1999-09-30 | 2007-09-06 | Kabushiki Kaisha Toshiba, Kawasaki | Non-linear correction device |
JP4256057B2 (en) | 1999-09-30 | 2009-04-22 | 株式会社東芝 | Nonlinear compensator |
US6246286B1 (en) | 1999-10-26 | 2001-06-12 | Telefonaktiebolaget Lm Ericsson | Adaptive linearization of power amplifiers |
CA2329100A1 (en) * | 1999-12-21 | 2001-06-21 | Nortel Networks Limited | Phase and amplitude detector and method of determining errors |
DE19962341C1 (en) * | 1999-12-23 | 2001-08-23 | Bosch Gmbh Robert | Transmitter for sending signals over radio channels and method for sending signals over radio channels |
JP4014343B2 (en) * | 1999-12-28 | 2007-11-28 | 富士通株式会社 | Distortion compensation device |
US6850566B2 (en) | 2000-02-22 | 2005-02-01 | Intervideo, Inc. | Implementation of quantization for SIMD architecture |
TW516320B (en) * | 2000-02-22 | 2003-01-01 | Intervideo Inc | Implementation of quantization for SIMD architecture |
US7158581B2 (en) * | 2000-03-16 | 2007-01-02 | Rohde & Schwarz Gmbh & Co. Kg | Method of determining parameters of an N-gate |
JP3590571B2 (en) | 2000-08-30 | 2004-11-17 | 株式会社日立国際電気 | Distortion compensator |
WO2002033820A1 (en) * | 2000-10-17 | 2002-04-25 | Telefonaktiebolaget L M Ericsson (Publ) | Communications systems |
GB2368214B (en) * | 2000-10-17 | 2004-11-03 | Ericsson Telefon Ab L M | Communications systems |
DE60137833D1 (en) * | 2001-04-09 | 2009-04-16 | Texas Instruments Inc | Frequency modulator using a phase locked loop |
US7103108B1 (en) * | 2001-05-17 | 2006-09-05 | Cypress Semiconductor Corp. | Digital signal processor transceiver |
JP4644974B2 (en) * | 2001-05-22 | 2011-03-09 | 住友電気工業株式会社 | Prefix nonlinear distortion compensator |
WO2002101919A1 (en) * | 2001-06-12 | 2002-12-19 | Fujitsu Limited | Distortion compensating device |
GB2376613B (en) * | 2001-06-15 | 2005-01-05 | Wireless Systems Int Ltd | Methods and apparatus for signal distortion correction |
GB2376581B (en) * | 2001-06-15 | 2005-03-09 | Wireless Systems Int Ltd | Control scheme for signal processing arrangement |
JP4012725B2 (en) | 2001-12-05 | 2007-11-21 | 株式会社日立コミュニケーションテクノロジー | Predistortion type amplifier |
US6812786B2 (en) | 2002-04-11 | 2004-11-02 | Andrew Corporation | Zero-bias bypass switching circuit using mismatched 90 degrees hybrid |
US6700439B2 (en) | 2002-04-11 | 2004-03-02 | Andrew Corporation | Zero-bias bypass switch |
JP3957077B2 (en) * | 2002-05-31 | 2007-08-08 | 富士通株式会社 | Distortion compensation device |
KR100448892B1 (en) * | 2002-06-04 | 2004-09-18 | 한국전자통신연구원 | Apparatus and Method for Pre-distortion for Nonlinear Distortion of High Power Amplifier |
EP1432194A1 (en) * | 2002-12-19 | 2004-06-23 | Nokia Corporation | Adaptive predistortion scheme with delay tracking |
DE10316559A1 (en) * | 2003-04-10 | 2004-11-18 | Rohde & Schwarz Ftk Gmbh | Feedback linearized transmitter device |
US7149257B2 (en) * | 2003-07-03 | 2006-12-12 | Powerwave Technologies, Inc. | Digital predistortion system and method for correcting memory effects within an RF power amplifier |
US7026871B2 (en) * | 2003-07-03 | 2006-04-11 | Icefyre Semiconductor, Inc. | Adaptive predistortion for a transmit system |
US7280612B2 (en) * | 2003-07-25 | 2007-10-09 | Zarbana Digital Fund Llc | Digital branch calibrator for an RF transmitter |
US7170343B2 (en) * | 2003-12-27 | 2007-01-30 | Electronics And Telecommunications Research Institute | Fast LUT predistorter for power amplifier |
US7430248B2 (en) * | 2004-01-27 | 2008-09-30 | Crestcom, Inc. | Predistortion circuit and method for compensating nonlinear distortion in a digital RF communications transmitter |
US20080146168A1 (en) * | 2004-02-09 | 2008-06-19 | Sige Semiconductor Inc. | Methods of Enhancing Power Amplifier Linearity |
US6998909B1 (en) * | 2004-02-17 | 2006-02-14 | Altera Corporation | Method to compensate for memory effect in lookup table based digital predistorters |
KR101050659B1 (en) | 2004-05-11 | 2011-07-19 | 삼성전자주식회사 | A method and apparatus for estimating sample delay between a transmission signal and a feedback signal of a mobile communication system and a base station transmitter using the same |
WO2006033256A1 (en) * | 2004-09-21 | 2006-03-30 | Hitachi Kokusai Electric Inc. | Distortion compensating amplifier apparatus |
US7330073B2 (en) * | 2004-10-06 | 2008-02-12 | Telefonaktiebolaget L M Ericsson (Publ) | Arbitrary waveform predistortion table generation |
US7570201B1 (en) * | 2004-11-05 | 2009-08-04 | Northrop Grumman Corporation | Radar exciter including phase compensation of the waveform generator |
JP4694362B2 (en) * | 2005-12-16 | 2011-06-08 | 三菱電機株式会社 | Delay compensation circuit |
US8391808B2 (en) * | 2008-02-28 | 2013-03-05 | Broadcom Corporation | Method and system for estimating and compensating non-linear distortion in a transmitter using calibration |
JP5290698B2 (en) * | 2008-10-22 | 2013-09-18 | 日本無線株式会社 | Predistorter |
JP5121691B2 (en) * | 2008-12-22 | 2013-01-16 | 株式会社東芝 | Distortion compensator, transmitter, distortion compensation method |
US8170508B2 (en) * | 2009-05-07 | 2012-05-01 | Rockstar Bidco Lp | Pre-distortion for a radio frequency power amplifier |
JP5632844B2 (en) * | 2010-03-02 | 2014-11-26 | パナソニック株式会社 | Wireless communication apparatus and wireless communication method |
CN102195912B (en) * | 2010-03-16 | 2015-03-04 | 富士通株式会社 | Digital pre-distortion processing equipment and method |
JP5509455B2 (en) * | 2010-05-31 | 2014-06-04 | 株式会社日立国際電気 | Distortion compensation device |
FR2976428A1 (en) * | 2011-06-07 | 2012-12-14 | St Microelectronics Sa | MULTISTANDARD WIRELESS TRANSMITTER |
US8649744B2 (en) * | 2011-09-08 | 2014-02-11 | Alcatel Lucent | Radio-frequency transmitter, such as for broadcasting and cellular base stations |
US8798561B2 (en) | 2011-09-08 | 2014-08-05 | Alcatel Lucent | Radio-frequency circuit having a transcoupling element |
US9813223B2 (en) * | 2013-04-17 | 2017-11-07 | Intel Corporation | Non-linear modeling of a physical system using direct optimization of look-up table values |
DE102013114409B4 (en) * | 2013-12-18 | 2022-01-20 | Intel Corporation | Device and method for determining information about a non-linearity of a transmission signal |
Family Cites Families (17)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4462001A (en) * | 1982-02-22 | 1984-07-24 | Canadian Patents & Development Limited | Baseband linearizer for wideband, high power, nonlinear amplifiers |
US4700151A (en) * | 1985-03-20 | 1987-10-13 | Nec Corporation | Modulation system capable of improving a transmission system |
JPH0771118B2 (en) * | 1989-12-27 | 1995-07-31 | 三菱電機株式会社 | Modulator |
FR2652969A1 (en) * | 1989-10-06 | 1991-04-12 | Philips Electronique Lab | PREDISTORSION DEVICE FOR DIGITAL TRANSMISSION SYSTEM. |
US5049832A (en) * | 1990-04-20 | 1991-09-17 | Simon Fraser University | Amplifier linearization by adaptive predistortion |
GB2265269B (en) * | 1992-03-02 | 1995-08-30 | Motorola Ltd | Radio transmitter with linearization training sequence |
EP0598585B1 (en) * | 1992-11-16 | 1999-03-31 | Linear Modulation Technology Ltd | Automatic calibration of the quadrature balance within a cartesian amplifier |
US5420536A (en) * | 1993-03-16 | 1995-05-30 | Victoria University Of Technology | Linearized power amplifier |
US5351016A (en) * | 1993-05-28 | 1994-09-27 | Ericsson Ge Mobile Communications Inc. | Adaptively self-correcting modulation system and method |
FR2707127A1 (en) * | 1993-06-29 | 1995-01-06 | Philips Laboratoire Electroniq | Digital transmission system with predisposition. |
GB2283629B (en) * | 1993-10-26 | 1997-08-27 | Motorola Ltd | Radio communications apparatus |
IT1265271B1 (en) * | 1993-12-14 | 1996-10-31 | Alcatel Italia | BASEBAND PREDISTRITORTION SYSTEM FOR THE ADAPTIVE LINEARIZATION OF POWER AMPLIFIERS |
US5486789A (en) * | 1995-02-28 | 1996-01-23 | Motorola, Inc. | Apparatus and method for providing a baseband digital error signal in an adaptive predistorter |
JP2967699B2 (en) * | 1995-03-06 | 1999-10-25 | 日本電気株式会社 | Transmission device |
US5650758A (en) * | 1995-11-28 | 1997-07-22 | Radio Frequency Systems, Inc. | Pipelined digital predistorter for a wideband amplifier |
US5732333A (en) * | 1996-02-14 | 1998-03-24 | Glenayre Electronics, Inc. | Linear transmitter using predistortion |
US5740520A (en) * | 1996-04-03 | 1998-04-14 | State Of Israel | Channel correction transceiver |
-
1996
- 1996-03-22 FR FR9603617A patent/FR2746564B1/en not_active Expired - Fee Related
-
1997
- 1997-03-19 AT AT97400614T patent/ATE213108T1/en not_active IP Right Cessation
- 1997-03-19 CA CA002200387A patent/CA2200387C/en not_active Expired - Fee Related
- 1997-03-19 DE DE69710235T patent/DE69710235T2/en not_active Expired - Lifetime
- 1997-03-19 AU AU16372/97A patent/AU711697B2/en not_active Ceased
- 1997-03-19 EP EP97400614A patent/EP0797294B1/en not_active Expired - Lifetime
- 1997-03-20 US US08/822,384 patent/US5903611A/en not_active Expired - Lifetime
- 1997-03-24 TW TW086103715A patent/TW332365B/en active
- 1997-03-24 JP JP9069941A patent/JPH1032435A/en active Pending
Also Published As
Publication number | Publication date |
---|---|
EP0797294A1 (en) | 1997-09-24 |
US5903611A (en) | 1999-05-11 |
DE69710235D1 (en) | 2002-03-21 |
CA2200387C (en) | 2004-06-22 |
AU711697B2 (en) | 1999-10-21 |
EP0797294B1 (en) | 2002-02-06 |
AU1637297A (en) | 1997-09-25 |
TW332365B (en) | 1998-05-21 |
ATE213108T1 (en) | 2002-02-15 |
DE69710235T2 (en) | 2002-09-19 |
JPH1032435A (en) | 1998-02-03 |
FR2746564B1 (en) | 1998-06-05 |
FR2746564A1 (en) | 1997-09-26 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
EEER | Examination request | ||
MKLA | Lapsed |
Effective date: 20150319 |