BR9816112A - Transmissor de portador de múltiplas frequências, estação base, e, método de transmissão de frequência de múltiplos portadores - Google Patents
Transmissor de portador de múltiplas frequências, estação base, e, método de transmissão de frequência de múltiplos portadoresInfo
- Publication number
- BR9816112A BR9816112A BR9816112-1A BR9816112A BR9816112A BR 9816112 A BR9816112 A BR 9816112A BR 9816112 A BR9816112 A BR 9816112A BR 9816112 A BR9816112 A BR 9816112A
- Authority
- BR
- Brazil
- Prior art keywords
- carrier
- base station
- transmission method
- frequency
- transmitter
- Prior art date
Links
Classifications
-
- 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
- H03F1/3282—Acting on the phase and the amplitude of the input signal
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B1/00—Details of transmission systems, not covered by a single one of groups H04B3/00 - H04B13/00; Details of transmission systems not characterised by the medium used for transmission
- H04B1/62—Details of transmission systems, not covered by a single one of groups H04B3/00 - H04B13/00; Details of transmission systems not characterised by the medium used for transmission for providing a predistortion of the signal in the transmitter and corresponding correction in the receiver, e.g. for improving the signal/noise ratio
-
- 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
- H03F2201/3206—Multiple channels are combined and amplified by only one amplifier
-
- 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
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B1/00—Details of transmission systems, not covered by a single one of groups H04B3/00 - H04B13/00; Details of transmission systems not characterised by the medium used for transmission
- H04B1/02—Transmitters
- H04B1/04—Circuits
Landscapes
- Engineering & Computer Science (AREA)
- Computer Networks & Wireless Communication (AREA)
- Signal Processing (AREA)
- Physics & Mathematics (AREA)
- Nonlinear Science (AREA)
- Power Engineering (AREA)
- Transmitters (AREA)
- Amplifiers (AREA)
- Digital Transmission Methods That Use Modulated Carrier Waves (AREA)
Abstract
"TRANSMISSOR DE PORTADOR DE MúLTIPLAS FREQuêNCIAS, ESTAçãO BASE, E, MéTODO DE TRANSMISSãO DE FREQuêNCIA DE MúLTIPLOS PORTADORES" Um transmissor de portador de múltiplas freq³ências (102) compreende um dispositivo de entrada para receber uma pluralidade de sinais digitais a serem transmitidos. Os sinais diferentes devem ser transmitidos em diferentes freq³ências de portador. Um dispositivo de amplificador (122) recebe um sinal compósito compreendendo os sinais diferentes nas respectivas freq³ências de portador e amplificar o sinal compósito. O dispositivo de pré-distorção (108) pré distorce a pluralidade de sinais digitais antes da amplificação do sinal compósito pelo dispositivo de amplificação. A pré-distorção fornecida pelo dispositivo de pré-distorção é subseq³entemente alterada dependendo da diferença entre os sinais de entrada e a saída do dispositivo de amplificador.
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
PCT/EP1998/008445 WO2000039920A1 (en) | 1998-12-24 | 1998-12-24 | Multi-frequency transmitter using predistortion and a method of transmitting |
Publications (1)
Publication Number | Publication Date |
---|---|
BR9816112A true BR9816112A (pt) | 2001-09-04 |
Family
ID=8167169
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
BR9816112-1A BR9816112A (pt) | 1998-12-24 | 1998-12-24 | Transmissor de portador de múltiplas frequências, estação base, e, método de transmissão de frequência de múltiplos portadores |
Country Status (9)
Country | Link |
---|---|
US (1) | US6999523B2 (pt) |
EP (1) | EP1142104B1 (pt) |
JP (1) | JP3766593B2 (pt) |
CN (1) | CN1130009C (pt) |
AU (1) | AU2163399A (pt) |
BR (1) | BR9816112A (pt) |
DE (1) | DE69831274T2 (pt) |
ES (1) | ES2247737T3 (pt) |
WO (1) | WO2000039920A1 (pt) |
Families Citing this family (61)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FI107100B (fi) * | 1999-03-26 | 2001-05-31 | Nokia Networks Oy | I/Q-modulaattorin vaihe- ja amplitudiepäbalanssin korjaus |
DE19962340B4 (de) * | 1999-12-23 | 2005-11-03 | Robert Bosch Gmbh | Sender zum Versenden von Signalen über Funkkanäle und Verfahren zum Senden von Signalen über Funkkanäle |
CN1124756C (zh) * | 2000-11-14 | 2003-10-15 | 华为技术有限公司 | 一种基于宽带多载波基站的增益均衡方法和装置 |
CN100372236C (zh) * | 2001-08-29 | 2008-02-27 | 三洋电机株式会社 | 信号生成装置 |
JP3643803B2 (ja) | 2001-08-30 | 2005-04-27 | 株式会社日立国際電気 | 増幅装置 |
JP2003078359A (ja) * | 2001-08-31 | 2003-03-14 | Hitachi Kokusai Electric Inc | 増幅装置 |
US7058369B1 (en) | 2001-11-21 | 2006-06-06 | Pmc-Sierra Inc. | Constant gain digital predistortion controller for linearization of non-linear amplifiers |
JP4012725B2 (ja) | 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 | プリディストーション型増幅装置 |
US6703897B2 (en) * | 2001-12-26 | 2004-03-09 | Nortel Networks Limited | Methods of optimising power amplifier efficiency and closed-loop power amplifier controllers |
US7386324B2 (en) * | 2002-04-17 | 2008-06-10 | Lenovo (Singapore) Pte. Ltd. | System and method for dual path terminal connection |
US7991071B2 (en) * | 2002-05-16 | 2011-08-02 | Rf Micro Devices, Inc. | AM to PM correction system for polar modulator |
US7801244B2 (en) | 2002-05-16 | 2010-09-21 | Rf Micro Devices, Inc. | Am to AM correction system for polar modulator |
KR100472070B1 (ko) * | 2002-10-16 | 2005-03-10 | 한국전자통신연구원 | 선형화가 가능한 적응 배열 안테나 시스템 및 그 선형화방법 |
US20040198269A1 (en) * | 2002-12-30 | 2004-10-07 | Richard Phillips | Linearization of amplified feedback distortion |
JP4395044B2 (ja) * | 2003-10-22 | 2010-01-06 | パナソニック株式会社 | 変調装置及び変調方法 |
EP1560327B1 (en) * | 2004-01-28 | 2006-06-07 | NTT DoCoMo, Inc. | Multi-band look-up table type predistorter |
US7170344B2 (en) * | 2004-02-03 | 2007-01-30 | Ntt Docomo, Inc. | Multi-band predistorter using power series representation |
US7499501B2 (en) * | 2004-04-16 | 2009-03-03 | Omereen Wireless, Llc | Symbol error based compensation methods for nonlinear amplifier distortion |
FR2871629A1 (fr) * | 2004-06-09 | 2005-12-16 | Thomson Licensing Sa | Dispositif de conversion de frequences, procede d'etalonnage dudit dispositif et systeme d'emission/reception de signaux electromagnetiques comportant un tel dispositif |
US7907671B2 (en) * | 2004-12-03 | 2011-03-15 | Motorola Mobility, Inc. | Method and system for scaling a multi-channel signal |
EP1732207B1 (en) * | 2005-06-03 | 2008-02-13 | NTT DoCoMo INC. | Multi-Band lookup table type predistorter |
US8224265B1 (en) | 2005-06-13 | 2012-07-17 | Rf Micro Devices, Inc. | Method for optimizing AM/AM and AM/PM predistortion in a mobile terminal |
CN100589462C (zh) * | 2005-12-20 | 2010-02-10 | 中兴通讯股份有限公司 | 宽带码分多址基站系统多通道多载波数字预失真发信机 |
US7877060B1 (en) | 2006-02-06 | 2011-01-25 | Rf Micro Devices, Inc. | Fast calibration of AM/PM pre-distortion |
US7653362B2 (en) * | 2006-03-16 | 2010-01-26 | Pine Valley Investments, Inc. | Method and apparatus for on-chip measurement of power amplifier AM/AM and AM/PM non-linearity |
US20070223621A1 (en) | 2006-03-21 | 2007-09-27 | M/A-Com, Inc. | Method and apparatus for signal power ramp-up in a communication transmission |
US7962108B1 (en) | 2006-03-29 | 2011-06-14 | Rf Micro Devices, Inc. | Adaptive AM/PM compensation |
US20070249290A1 (en) * | 2006-04-24 | 2007-10-25 | Sony Ericsson Mobile Communications Ab | Adaptive pre-distortion |
US7881680B1 (en) * | 2006-10-23 | 2011-02-01 | Marvell International Ltd. | Predictive transmitter calibration |
US8224250B2 (en) * | 2006-12-06 | 2012-07-17 | Broadcom Corporation | Method and system for compensating for estimated distortion in a transmitter by utilizing a digital predistortion scheme with a single feedback mixer |
US20080139141A1 (en) * | 2006-12-06 | 2008-06-12 | George Varghese | Method and system for estimating and compensating non-linear distortion in a transmitter using data signal feedback |
US8009762B1 (en) | 2007-04-17 | 2011-08-30 | Rf Micro Devices, Inc. | Method for calibrating a phase distortion compensated polar modulated radio frequency transmitter |
US8548091B2 (en) * | 2007-12-21 | 2013-10-01 | Apple Inc. | Measuring and correcting errors in a transmit chain with an IQ up-converter and IQ down-converter |
US8068558B2 (en) * | 2008-12-17 | 2011-11-29 | Nortel Networks Limited | Selective peak power reduction |
US8358680B2 (en) * | 2008-12-23 | 2013-01-22 | Apple Inc. | Reducing power levels associated with two or more signals using peak reduction distortion that is derived from a combined signal |
CN101771383B (zh) * | 2008-12-31 | 2012-04-18 | 大唐移动通信设备有限公司 | 一种实现信号预失真处理的方法和装置 |
US8489042B1 (en) | 2009-10-08 | 2013-07-16 | Rf Micro Devices, Inc. | Polar feedback linearization |
GB2503380B (en) * | 2011-03-28 | 2016-06-01 | Zte Corp | A method for pre-distorting and a pre-distorter |
US8576943B2 (en) * | 2011-09-09 | 2013-11-05 | Telefonaktiebolaget L M Ericsson (Publ) | Linearization for a single power amplifier in a multi-band transmitter |
US8380144B1 (en) * | 2011-09-30 | 2013-02-19 | Telefonaktiebolaget L M Ericsson (Publ) | Systems and methods for digital predistortion in a dual band transmitter |
US8391809B1 (en) * | 2011-10-13 | 2013-03-05 | Futurewei Technologies, Inc. | System and method for multi-band predistortion |
US8606197B2 (en) | 2012-01-16 | 2013-12-10 | Telefonaktiebolaget L M Ericsson (Publ) | Method and system for generating odd order predistortions for a power amplifier receiving concurrent dual band inputs |
US9071207B2 (en) | 2012-02-03 | 2015-06-30 | Telefonaktiebolaget L M Ericsson (Publ) | Predistortion of concurrent multi-band signal to compensate for PA non-linearity |
ES2706431T3 (es) * | 2012-05-03 | 2019-03-28 | Ericsson Telefon Ab L M | Aparato transmisor y método de radiocomunicación |
US8923787B2 (en) * | 2012-07-05 | 2014-12-30 | Pierre-André LAPORTE | Low sampling rate adaptation scheme for dual-band linearization |
US8750792B2 (en) * | 2012-07-26 | 2014-06-10 | Remec Broadband Wireless, Llc | Transmitter for point-to-point radio system |
US20140029683A1 (en) * | 2012-07-26 | 2014-01-30 | Telefonaktiebolaget L M Ericsson (Publ) | Multi-Band Observation Receiver |
US9385764B2 (en) | 2012-12-13 | 2016-07-05 | Telefonaktiebolaget Lm Ericsson (Publ) | Digital pre-distortion for high bandwidth signals |
US9077440B2 (en) | 2013-01-04 | 2015-07-07 | Telefonaktiebolaget L M Ericsson (Publ) | Digital suppression of transmitter intermodulation in receiver |
KR101436926B1 (ko) * | 2013-03-15 | 2014-09-05 | 세원텔레텍 주식회사 | 전력증폭기용 동시 이중대역 디지털 전치왜곡 장치 및 그 방법 |
US9252718B2 (en) | 2013-05-22 | 2016-02-02 | Telefonaktiebolaget L M Ericsson (Publ) | Low complexity digital predistortion for concurrent multi-band transmitters |
US9385762B2 (en) | 2013-05-22 | 2016-07-05 | Telefonaktiebolaget L M Ericsson (Publ) | Linearization of intermodulation bands for concurrent dual-band power amplifiers |
JP6280697B2 (ja) * | 2013-05-27 | 2018-02-14 | サイプレス セミコンダクター コーポレーション | パワーアンプ装置及びその補償方法 |
US9735741B2 (en) * | 2014-08-28 | 2017-08-15 | Analog Devices Global | Receivers for digital predistortion |
US9379744B2 (en) | 2014-09-16 | 2016-06-28 | Honeywell International Inc. | System and method for digital predistortion |
US9467319B1 (en) | 2015-04-25 | 2016-10-11 | Motorola Solutions, Inc. | Expanding a capacity of a single radio channel |
KR101746799B1 (ko) * | 2015-11-04 | 2017-06-14 | 주식회사 쏠리드 | 분산 안테나 시스템 |
EP3255799B1 (en) * | 2016-06-09 | 2019-07-24 | Alcatel Lucent | Reducing distortions in amplified signals radiated by a multiple antenna system |
FR3067891A1 (fr) * | 2017-06-14 | 2018-12-21 | STMicroelectronics (Alps) SAS | Linearisation d'une chaine de transmission de signaux radiofrequences |
CN107332574A (zh) * | 2017-08-11 | 2017-11-07 | 北京北广科技股份有限公司 | 一种大功率罗兰c脉冲发射机及其波形调制方法 |
CN118339808A (zh) * | 2021-11-30 | 2024-07-12 | 上海诺基亚贝尔股份有限公司 | 用于优化数字预失真的装置、方法和计算机可读介质 |
Family Cites Families (12)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5551070A (en) | 1993-01-28 | 1996-08-27 | Telefonaktiebolaget Lm Ericsson | Cartesian multicarrier feedback |
FR2707127A1 (fr) * | 1993-06-29 | 1995-01-06 | Philips Laboratoire Electroniq | Système de transmission numérique à prédisposition. |
JPH07283743A (ja) | 1994-04-12 | 1995-10-27 | Fujitsu Ltd | マルチキャリア無線送信装置 |
GB2294168A (en) | 1994-10-15 | 1996-04-17 | Nokia Telecommunications Oy | Multi-channel transmitters for radio telephone base stations |
US5732333A (en) * | 1996-02-14 | 1998-03-24 | Glenayre Electronics, Inc. | Linear transmitter using predistortion |
US5937011A (en) * | 1996-03-26 | 1999-08-10 | Airnet Communications Corp. | Multi-carrier high power amplifier using digital pre-distortion |
DE59810878D1 (de) * | 1997-07-08 | 2004-04-08 | Siemens Ag | Sendeeinrichtung |
JP3171157B2 (ja) * | 1997-12-10 | 2001-05-28 | 松下電器産業株式会社 | 非線形歪補償装置 |
US6075411A (en) * | 1997-12-22 | 2000-06-13 | Telefonaktiebolaget Lm Ericsson | Method and apparatus for wideband predistortion linearization |
US6188732B1 (en) * | 1998-10-19 | 2001-02-13 | Samsung Electronics Co., Ltd. | Digital feedforward amplifier for use in an RF transmitter and method of operation |
US6104241A (en) * | 1998-11-18 | 2000-08-15 | Spectrian | High efficiency feed-forward RF power amplifier with predistoration enchancement |
US6275685B1 (en) * | 1998-12-10 | 2001-08-14 | Nortel Networks Limited | Linear amplifier arrangement |
-
1998
- 1998-12-24 ES ES98965872T patent/ES2247737T3/es not_active Expired - Lifetime
- 1998-12-24 CN CN98814391A patent/CN1130009C/zh not_active Expired - Fee Related
- 1998-12-24 WO PCT/EP1998/008445 patent/WO2000039920A1/en active IP Right Grant
- 1998-12-24 BR BR9816112-1A patent/BR9816112A/pt not_active Application Discontinuation
- 1998-12-24 JP JP2000591719A patent/JP3766593B2/ja not_active Expired - Fee Related
- 1998-12-24 DE DE69831274T patent/DE69831274T2/de not_active Expired - Lifetime
- 1998-12-24 AU AU21633/99A patent/AU2163399A/en not_active Abandoned
- 1998-12-24 EP EP98965872A patent/EP1142104B1/en not_active Expired - Lifetime
-
2001
- 2001-06-22 US US09/887,481 patent/US6999523B2/en not_active Expired - Fee Related
Also Published As
Publication number | Publication date |
---|---|
JP3766593B2 (ja) | 2006-04-12 |
US20020021764A1 (en) | 2002-02-21 |
AU2163399A (en) | 2000-07-31 |
CN1337088A (zh) | 2002-02-20 |
ES2247737T3 (es) | 2006-03-01 |
DE69831274T2 (de) | 2006-06-08 |
WO2000039920A1 (en) | 2000-07-06 |
CN1130009C (zh) | 2003-12-03 |
DE69831274D1 (de) | 2005-09-22 |
JP2002534829A (ja) | 2002-10-15 |
EP1142104A1 (en) | 2001-10-10 |
EP1142104B1 (en) | 2005-08-17 |
US6999523B2 (en) | 2006-02-14 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
BR9816112A (pt) | Transmissor de portador de múltiplas frequências, estação base, e, método de transmissão de frequência de múltiplos portadores | |
MXPA01000420A (es) | Metodo y aparato para la amplificacion de senales dependiente de la modulacion. | |
AU3639901A (en) | Antenna coupling systems and methods for transmitters | |
TW354441B (en) | Intermodulation compensation in multi-channel amplifier | |
SE0001260L (sv) | Bredbandig effektförstärkare med hög verkningsgrad | |
AR015506A1 (es) | Aparato y metodo para compensar la distorsion respecto de una banda ancha | |
FR2746564B1 (fr) | Procede pour corriger des non-linearites d'un amplificateur, et emetteur radio mettant en oeuvre un tel procede | |
ES476288A1 (es) | Un metodo para transmitir dos mensajes diferentes sobre una onda portadora por un unico canal de transmision de anchura de banda predeterminada. | |
NO996283L (no) | Multimodusrettmottaker | |
SE9802498D0 (sv) | Arrangement and method relating to radio communication | |
SE9601619L (sv) | Anordning med sändarkombinerare | |
CA2234651A1 (en) | Apparatus and method for providing a beacon signal in a wireless communication system | |
MXPA02012441A (es) | Metodo y aparato para transmision de banda multiple. | |
CA2142661A1 (en) | Radio Station Apparatus and Signal Transmission Method Thereof | |
AU8032198A (en) | Method and apparatus for carrying out high data rate underwater communication | |
CA2323354A1 (en) | Power amplifier system | |
NO874685L (no) | Kommunikasjonssystem med tidsmultipleks for effektiv utnyttelse av frekvensbaand. | |
NO992043L (no) | FremgangsmÕte for kombinering av flere signaler, samt basestasjon | |
SE9802625D0 (sv) | Förfarande och anordning för radiokommunikation | |
SE9601774D0 (sv) | Repeater | |
FI883403A (fi) | Kallhaerdande formaemne-bindemedel och dess anvaendning. | |
ES2168210A1 (es) | Un sistema amplificador rf digitalmente modulado que tiene mejor reduccion de distorsion de banda lateral adyacente. | |
EP0393856A3 (en) | Modulation of adjacent channels | |
JPS54152815A (en) | Simultaneous amplifying system for multi-channel signal | |
SE9202526D0 (sv) | Flexibelt naetkoncept |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
B15K | Others concerning applications: alteration of classification |
Free format text: ALTERADA A CLASSIFICACAO DE H03F 1/32, H04B 1/62, H04B 1/04,H04L 5/06 PARA INT.CL.2011.01 H04B 1/04, H04F 1/32 Ipc: H03F 1/32 (2011.01), H04B 1/62 (2011.01), H04B 1/0 |
|
B07A | Technical examination (opinion): publication of technical examination (opinion) [chapter 7.1 patent gazette] | ||
B09B | Patent application refused [chapter 9.2 patent gazette] |
Free format text: INDEFIRO O PEDIDO DE ACORDO COM O ART. 8O COMBINADO COM ART. 13 E ART. 25 DA LPI. |
|
B09B | Patent application refused [chapter 9.2 patent gazette] |
Free format text: MANTIDO O INDEFERIMENTO UMA VEZ QUE NAO FOI APRESENTADO RECURSO DENTRO DO PRAZO LEGAL. |