SE516994C2 - Linjärisering av effektförstärkare i ett TDMA- mobilradiosystem - Google Patents
Linjärisering av effektförstärkare i ett TDMA- mobilradiosystemInfo
- Publication number
- SE516994C2 SE516994C2 SE9402325A SE9402325A SE516994C2 SE 516994 C2 SE516994 C2 SE 516994C2 SE 9402325 A SE9402325 A SE 9402325A SE 9402325 A SE9402325 A SE 9402325A SE 516994 C2 SE516994 C2 SE 516994C2
- Authority
- SE
- Sweden
- Prior art keywords
- channel
- linearization
- time slot
- signals
- radio
- 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
- H04B7/00—Radio transmission systems, i.e. using radiation field
- H04B7/005—Control of transmission; Equalising
-
- 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
Landscapes
- Engineering & Computer Science (AREA)
- Computer Networks & Wireless Communication (AREA)
- Signal Processing (AREA)
- Physics & Mathematics (AREA)
- Nonlinear Science (AREA)
- Power Engineering (AREA)
- Mobile Radio Communication Systems (AREA)
- Transmitters (AREA)
- Time-Division Multiplex Systems (AREA)
- Amplifiers (AREA)
- Optical Recording Or Reproduction (AREA)
- Signal Processing For Digital Recording And Reproducing (AREA)
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB9222922A GB2272133B (en) | 1992-11-02 | 1992-11-02 | Radio system |
PCT/EP1993/002743 WO1994010765A1 (en) | 1992-11-02 | 1993-10-07 | Power amplifier linearization in a tdma mobile radio system |
Publications (3)
Publication Number | Publication Date |
---|---|
SE9402325D0 SE9402325D0 (sv) | 1994-07-01 |
SE9402325L SE9402325L (sv) | 1994-08-29 |
SE516994C2 true SE516994C2 (sv) | 2002-04-02 |
Family
ID=10724392
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
SE9402325A SE516994C2 (sv) | 1992-11-02 | 1994-07-01 | Linjärisering av effektförstärkare i ett TDMA- mobilradiosystem |
Country Status (26)
Country | Link |
---|---|
US (1) | US5559807A (da) |
EP (1) | EP0619927B1 (da) |
CN (1) | CN1051417C (da) |
AT (1) | AT407814B (da) |
AU (1) | AU664497B2 (da) |
BR (1) | BR9305710A (da) |
CA (1) | CA2126987C (da) |
DE (2) | DE4395427T1 (da) |
DK (1) | DK173776B1 (da) |
ES (1) | ES2098185B1 (da) |
FI (1) | FI107095B (da) |
GB (1) | GB2272133B (da) |
GR (1) | GR3032966T3 (da) |
HK (1) | HK1000750A1 (da) |
HU (1) | HU218633B (da) |
IL (1) | IL107253A (da) |
IN (1) | IN187365B (da) |
MY (1) | MY110064A (da) |
NL (1) | NL194188C (da) |
PL (1) | PL173528B1 (da) |
PT (1) | PT619927E (da) |
RO (2) | RO119671B1 (da) |
RU (1) | RU2109403C1 (da) |
SE (1) | SE516994C2 (da) |
TR (1) | TR28221A (da) |
WO (1) | WO1994010765A1 (da) |
Families Citing this family (43)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB2298338B (en) * | 1995-02-15 | 1999-09-29 | Motorola Ltd | A method for reverse channel sounding in a communications system |
FI98675B (fi) * | 1995-02-17 | 1997-04-15 | Nokia Telecommunications Oy | Aikavälien allokoiminen matkaviestinjärjestelmässä |
GB2301247A (en) * | 1995-05-22 | 1996-11-27 | Univ Bristol | A cartesian loop transmitter amplifier |
US5748678A (en) * | 1995-07-13 | 1998-05-05 | Motorola, Inc. | Radio communications apparatus |
US5675286A (en) * | 1996-02-12 | 1997-10-07 | Motorola, Inc. | Method and apparatus for an improved linear transmitter |
GB2321574B (en) * | 1997-01-24 | 2000-07-12 | Motorola Ltd | Communication system,transmitter circuit and method of operation therefor |
US6829226B1 (en) * | 1997-04-04 | 2004-12-07 | Ericsson Inc. | Power control for a mobile terminal in a satellite communication system |
FR2766638B1 (fr) * | 1997-07-24 | 1999-09-24 | Alsthom Cge Alcatel | Dispositif de linearisation d'amplificateurs d'emission |
EP0902555A1 (en) * | 1997-09-13 | 1999-03-17 | Deutsche Thomson-Brandt Gmbh | Indoor communication system and synchronisation for a receiver |
SE511323C2 (sv) | 1997-12-23 | 1999-09-13 | Ericsson Telefon Ab L M | Metod och anordning för fasreglering |
FR2781323B1 (fr) * | 1998-07-16 | 2000-08-18 | Alsthom Cge Alcatel | Procede de transmission dans des fenetres successives |
US6043712A (en) * | 1998-07-17 | 2000-03-28 | Motorola, Inc. | Linear power amplifier |
GB9906417D0 (en) * | 1999-03-19 | 1999-05-12 | Simoco Int Ltd | Radio transmitters |
US6539010B1 (en) * | 1999-10-28 | 2003-03-25 | Telefonaktiebolaget Lm Ericsson (Publ) | Downlink power control and adaptive beamforming for half-rate radiocommunication systems |
US6477368B1 (en) * | 2000-04-28 | 2002-11-05 | Motorola, Inc. | Method for dynamic transmitter training for a shared communication system utilizing dynamic channel allocation |
US7088958B2 (en) * | 2001-06-19 | 2006-08-08 | Intersil Americas Inc. | Remote power amplifier linearization |
US6731694B2 (en) * | 2001-08-07 | 2004-05-04 | Motorola, Inc. | Isolator eliminator for a linear transmitter |
US10420097B2 (en) | 2002-01-22 | 2019-09-17 | Ipr Licensing, Inc. | Techniques for setting up traffic channels in a communications system |
CN100433581C (zh) | 2002-01-22 | 2008-11-12 | Ipr特许公司 | 在通信***中分配业务信道 |
US7113551B2 (en) * | 2002-07-25 | 2006-09-26 | Intersil Corporation | Transmitter with limited spectral regrowth and method therefor |
FR2846813B1 (fr) * | 2002-11-05 | 2005-01-28 | Eads Defence & Security Ntwk | Procede et dispositif d'apprentissage d'un dispositif de linearisation d'un amplificateur rf, et terminal mobile incorporant un tel dispositif |
FR2846812B1 (fr) * | 2002-11-05 | 2005-01-28 | Eads Defence & Security Ntwk | Perfectionnement aux procedes et dispositifs d'apprentissage d'un dispositif de linearisation d'un amplificateur rf |
ATE347221T1 (de) * | 2003-05-23 | 2006-12-15 | Sony Ericsson Mobile Comm Ab | Automatische leistungregelungschaltung für eine qam-sendeeinrichtung in einem drahtlosen kommunikationsgerät |
US7720171B2 (en) * | 2003-06-13 | 2010-05-18 | Alcatel-Lucent Usa Inc. | Coefficient estimation method and apparatus |
US7469491B2 (en) | 2004-01-27 | 2008-12-30 | Crestcom, Inc. | Transmitter predistortion circuit and method therefor |
US7099399B2 (en) * | 2004-01-27 | 2006-08-29 | Crestcom, Inc. | Distortion-managed digital RF communications transmitter and method therefor |
US20070082617A1 (en) * | 2005-10-11 | 2007-04-12 | Crestcom, Inc. | Transceiver with isolation-filter compensation and method therefor |
US7542519B2 (en) * | 2005-12-29 | 2009-06-02 | Crestcom, Inc. | Radio frequency transmitter and method therefor |
US7724840B2 (en) * | 2006-12-19 | 2010-05-25 | Crestcom, Inc. | RF transmitter with predistortion and method therefor |
US8175553B2 (en) | 2007-01-17 | 2012-05-08 | Motorola Solutions, Inc. | Wireless communication unit, linearised transmitter circuit and method of linearising therein |
GB2445776B (en) | 2007-01-17 | 2009-08-19 | Motorola Inc | Wireless communication unit, linearised transmitter circuit and method of linearising therein |
US20080285640A1 (en) * | 2007-05-15 | 2008-11-20 | Crestcom, Inc. | RF Transmitter With Nonlinear Predistortion and Method Therefor |
US20090033418A1 (en) * | 2007-08-03 | 2009-02-05 | M/A-Com, Inc. | Training sequence and digital linearization process for power amplifier |
CN102044736B (zh) * | 2009-10-14 | 2015-05-20 | 中兴通讯股份有限公司 | 射频拉远单元 |
US8331484B2 (en) | 2010-01-13 | 2012-12-11 | Cisco Technology, Inc. | Digital Predistortion training system |
US8792581B2 (en) | 2010-02-18 | 2014-07-29 | Telefonaktiebolaget Lm Ericsson (Publ) | RF clock generator with spurious tone cancellation |
US8626090B2 (en) * | 2010-03-23 | 2014-01-07 | Telefonaktiebolaget Lm Ericsson (Publ) | Circuit and method for interference reduction |
RU2516868C1 (ru) * | 2012-12-25 | 2014-05-20 | Открытое акционерное общество "Научно-производственное предприятие "Полет" | Система радиосвязи с подвижными объектами |
RU2535923C1 (ru) * | 2013-10-15 | 2014-12-20 | Открытое акционерное общество "Научно-производственное предприятие "Полет" | Система радиосвязи с подвижными объектами |
RU2535922C1 (ru) * | 2013-10-15 | 2014-12-20 | Открытое акционерное общество "Научно-производственное предприятие "Полет" | Система радиосвязи с подвижными объектами |
MX2018001858A (es) | 2015-08-14 | 2018-11-09 | Viasat Inc | Circuito digital de polarizacion dinamica. |
DE102019134540B4 (de) * | 2019-12-16 | 2021-08-05 | Hytera Mobilfunk Gmbh | Verfahren zur Fehlerüberwachung einer Antennenanlage einer Basisstation, Überwachungssystem, Testeinrichtung, Basisstation und Computerprogramm hierzu |
RU2746148C1 (ru) * | 2020-07-17 | 2021-04-07 | Акционерное общество "Научно-производственное предприятие "Полет" | Система радиосвязи с подвижными объектами |
Family Cites Families (10)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4852090A (en) * | 1987-02-02 | 1989-07-25 | Motorola, Inc. | TDMA communications system with adaptive equalization |
US4873683A (en) * | 1987-12-04 | 1989-10-10 | Motorola, Inc. | TDMA radio system employing BPSK synchronization for QPSK signals subject to random phase variation and multipath fading |
US4998290A (en) * | 1988-05-09 | 1991-03-05 | Canadian Marconi Corporation | Frequency-hopping radio communication network |
DE3833940A1 (de) * | 1988-09-22 | 1990-04-05 | Siemens Ag | Verfahren zur neusynchronisation einer vermittlungsstelle in einem fernmeldenetz |
IT1239472B (it) * | 1990-04-09 | 1993-11-02 | Sits Soc It Telecom Siemens | Linearizzatore del tipo a predistorsione per amplificatori di potenza a microonde |
WO1992008297A1 (en) * | 1990-10-24 | 1992-05-14 | Motorola, Inc. | An apparatus and method for varying a signal in a transmitter of a transceiver |
US5066923A (en) * | 1990-10-31 | 1991-11-19 | Motorola, Inc. | Linear transmitter training method and apparatus |
GB2265269B (en) * | 1992-03-02 | 1995-08-30 | Motorola Ltd | Radio transmitter with linearization training sequence |
GB2265270B (en) * | 1992-03-02 | 1996-06-12 | Motorola Ltd | Rf power amplifier with linearization |
US5440544A (en) * | 1993-12-27 | 1995-08-08 | General Electric Company | Integrated data link concept for air traffic control applications |
-
1992
- 1992-11-02 GB GB9222922A patent/GB2272133B/en not_active Expired - Lifetime
-
1993
- 1993-10-07 RO RO94-01115A patent/RO119671B1/ro unknown
- 1993-10-07 BR BR9305710A patent/BR9305710A/pt not_active IP Right Cessation
- 1993-10-07 EP EP93922524A patent/EP0619927B1/en not_active Expired - Lifetime
- 1993-10-07 AU AU51494/93A patent/AU664497B2/en not_active Expired
- 1993-10-07 RO ROA200101241A patent/RO119672B1/ro unknown
- 1993-10-07 PL PL93304341A patent/PL173528B1/pl unknown
- 1993-10-07 DE DE4395427T patent/DE4395427T1/de active Granted
- 1993-10-07 NL NL9320020A patent/NL194188C/nl not_active IP Right Cessation
- 1993-10-07 DE DE4395427A patent/DE4395427C2/de not_active Expired - Lifetime
- 1993-10-07 US US08/256,299 patent/US5559807A/en not_active Expired - Lifetime
- 1993-10-07 CA CA002126987A patent/CA2126987C/en not_active Expired - Lifetime
- 1993-10-07 HU HU9401972A patent/HU218633B/hu unknown
- 1993-10-07 PT PT93922524T patent/PT619927E/pt unknown
- 1993-10-07 WO PCT/EP1993/002743 patent/WO1994010765A1/en active IP Right Grant
- 1993-10-07 RU RU94035751A patent/RU2109403C1/ru active
- 1993-10-07 AT AT0901693A patent/AT407814B/de not_active IP Right Cessation
- 1993-10-07 ES ES09450017A patent/ES2098185B1/es not_active Expired - Fee Related
- 1993-10-12 IL IL10725393A patent/IL107253A/en not_active IP Right Cessation
- 1993-10-14 IN IN1149DE1993 patent/IN187365B/en unknown
- 1993-10-19 MY MYPI93002140A patent/MY110064A/en unknown
- 1993-10-30 CN CN93114498A patent/CN1051417C/zh not_active Expired - Lifetime
- 1993-11-01 TR TR00991/93A patent/TR28221A/xx unknown
-
1994
- 1994-07-01 SE SE9402325A patent/SE516994C2/sv not_active IP Right Cessation
- 1994-07-01 DK DK199400793A patent/DK173776B1/da not_active IP Right Cessation
- 1994-07-01 FI FI943189A patent/FI107095B/fi not_active IP Right Cessation
-
1997
- 1997-12-01 HK HK97102295A patent/HK1000750A1/xx not_active IP Right Cessation
-
2000
- 2000-03-16 GR GR20000400666T patent/GR3032966T3/el unknown
Also Published As
Similar Documents
Publication | Publication Date | Title |
---|---|---|
SE516994C2 (sv) | Linjärisering av effektförstärkare i ett TDMA- mobilradiosystem | |
WO2020145747A1 (ko) | 무선 통신 시스템에서 신호를 송수신하는 방법 및 이를 지원하는 장치 | |
US6470057B1 (en) | Method for timing recovery and compensation in time-division-duplex wireless communications | |
KR20060032205A (ko) | 무선 신호들을 양방향으로 그리고 동기화 방식으로중계하는 방법 및 장치 | |
KR20040090793A (ko) | 이동 통신 단말기의 업/다운 링크 동기화 장치 | |
US11937199B2 (en) | Time-division-duplex repeaters with global navigation satellite system timing recovery | |
US4035580A (en) | Switching arrangement for transmitting synchronously and asynchronously occurring data | |
KR20160115415A (ko) | 기지국의 디지털 신호 처리 장치 및 이의 데이터 처리 방법 | |
FI105302B (fi) | Vahvistusohjauslaite informaatiosignaalien vastaanottimessa | |
JP3196892B2 (ja) | 送信出力制御装置 | |
JPH06343056A (ja) | 無線電話システムの送受信スロット設定方式 | |
JPH03214890A (ja) | 移動局の無線通信機及びそれを使用した通信チャンネル切換え方法 | |
JPH04119018A (ja) | 衛星通信地球局用送信装置 | |
JP2001517894A (ja) | 基地局と移動局とを有する無線fdd/tdma通信システム | |
JPH06268619A (ja) | 時分割多重用データ送信装置 | |
JPH04269018A (ja) | 無線送信装置 | |
JPS61167238A (ja) | 送受信装置の遅延時間補償方式 | |
JP2002247019A (ja) | フレーム同期制御方式 | |
JPH01238331A (ja) | 送信電力制御装置 | |
JPH10126333A (ja) | フレームタイミング同期確立装置 | |
JPS5923502B2 (ja) | ル−プ伝送システム | |
JPS5930332A (ja) | 無線送信方式 | |
JPH06335045A (ja) | 移動通信方式 | |
JPH0714157B2 (ja) | 非復帰クロツク選択型加入者無線方式 | |
JPH0650834B2 (ja) | 時分割多元接続衛星通信方式 |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
NUG | Patent has lapsed |