ES2098185A1 - Sistemas de radio enlazados de acceso multiple de division de tiempo (tdma). - Google Patents
Sistemas de radio enlazados de acceso multiple de division de tiempo (tdma).Info
- Publication number
- ES2098185A1 ES2098185A1 ES09450017A ES9450017A ES2098185A1 ES 2098185 A1 ES2098185 A1 ES 2098185A1 ES 09450017 A ES09450017 A ES 09450017A ES 9450017 A ES9450017 A ES 9450017A ES 2098185 A1 ES2098185 A1 ES 2098185A1
- Authority
- ES
- Spain
- Prior art keywords
- time slots
- power amplifier
- linearization
- time
- radio system
- 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
- 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)
- Physics & Mathematics (AREA)
- Nonlinear Science (AREA)
- Power Engineering (AREA)
- Computer Networks & Wireless Communication (AREA)
- Signal Processing (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)
Abstract
SISTEMA DE RADIO ENLAZADOS DE ACCESO MULTIPLE DE DIVISION DE TIEMPO (TDMA), QUE COMPRENDE UNA ESTACION DE BASE Y UNA PLURALIDAD DE UNIDADES DE RADIO REMOTAS PARA COMUNICACION POR INTERVALOS DE TIEMPO DE UN CANAL DE RADIO DE TIEMPO COMPARTIDO. EL CANAL COMPRENDE INTERVALOS DE LINEALIZACION PREDETERMINADOS PARA LA TRANSMISION DE SEÑALES DE ECUALIZACION PARA LINEALIZACION, ENTREMEZCLADAS ENTRE OTROS INTERVALOS DE TIEMPO (TRAFICO O CONTROL), DE MODO QUE UNA UNIDAD REMOTA QUE TIENE OPERACION DE LINEALIZACION (TAL COMO REALIMENTACION CARTESIANA CON ECUALIZACION) PUEDE GENERAR UNA SEÑAL DE ECUALIZACION PARA LINEALIZACION DURANTE UN INTERVALO DE LINEALIZACION Y PUEDE LINEALIZAR SU AMPLIFICADOR DE POTENCIA DURANTE ESE INTERVALO CON ANTICIPACION O EN FORMA INDEPENDIENTE A LA TRANSMISION DE SEÑALES DURANTE UNO DE LOS DEMAS INTERVALOS. DE ESTA MANERA LA TRANSMISION DE SECUENCIAS DE ECUALIZACION PARA LINEALIZACION POR DISTINTAS UNIDADES REMOTAS NO INTERFIERE CON LAS SEÑALES DE TRAFICO O CONTROL.
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB9222922A GB2272133B (en) | 1992-11-02 | 1992-11-02 | Radio system |
Publications (2)
Publication Number | Publication Date |
---|---|
ES2098185A1 true ES2098185A1 (es) | 1997-04-16 |
ES2098185B1 ES2098185B1 (es) | 1997-12-16 |
Family
ID=10724392
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
ES09450017A Expired - Fee Related ES2098185B1 (es) | 1992-11-02 | 1993-10-07 | Sistemas de radio enlazados de acceso multiple de division de tiempo (tdma). |
Country Status (26)
Country | Link |
---|---|
US (1) | US5559807A (es) |
EP (1) | EP0619927B1 (es) |
CN (1) | CN1051417C (es) |
AT (1) | AT407814B (es) |
AU (1) | AU664497B2 (es) |
BR (1) | BR9305710A (es) |
CA (1) | CA2126987C (es) |
DE (2) | DE4395427C2 (es) |
DK (1) | DK173776B1 (es) |
ES (1) | ES2098185B1 (es) |
FI (1) | FI107095B (es) |
GB (1) | GB2272133B (es) |
GR (1) | GR3032966T3 (es) |
HK (1) | HK1000750A1 (es) |
HU (1) | HU218633B (es) |
IL (1) | IL107253A (es) |
IN (1) | IN187365B (es) |
MY (1) | MY110064A (es) |
NL (1) | NL194188C (es) |
PL (1) | PL173528B1 (es) |
PT (1) | PT619927E (es) |
RO (2) | RO119672B1 (es) |
RU (1) | RU2109403C1 (es) |
SE (1) | SE516994C2 (es) |
TR (1) | TR28221A (es) |
WO (1) | WO1994010765A1 (es) |
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 |
CN100433581C (zh) | 2002-01-22 | 2008-11-12 | Ipr特许公司 | 在通信系统中分配业务信道 |
US10420097B2 (en) | 2002-01-22 | 2019-09-17 | Ipr Licensing, Inc. | Techniques for setting up traffic channels in a communications system |
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 |
EP2550746B1 (en) * | 2010-03-23 | 2014-05-28 | 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 |
CN108463945B (zh) | 2015-08-14 | 2022-06-03 | 维尔塞特公司 | 数字动态偏置电路 |
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 |
Citations (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP0318686A2 (en) * | 1987-12-04 | 1989-06-07 | Motorola, Inc. | TDMA Radio system employing BPSK synchronisation for QPSK signals subject to random phase variation and multipath fading |
EP0363630A2 (de) * | 1988-09-22 | 1990-04-18 | Siemens Aktiengesellschaft | Verfahren zur Neusynchronisation einer Vermittlungsstelle in einem Fernmeldenetz |
EP0451909A2 (en) * | 1990-04-09 | 1991-10-16 | Siemens Telecomunicazioni S.P.A. | Predistortion linearizer for microwave power amplifiers |
US5066923A (en) * | 1990-10-31 | 1991-11-19 | Motorola, Inc. | Linear transmitter training method and apparatus |
WO1992008297A1 (en) * | 1990-10-24 | 1992-05-14 | Motorola, Inc. | An apparatus and method for varying a signal in a transmitter of a transceiver |
WO1993018602A1 (en) * | 1992-03-02 | 1993-09-16 | Motorola Limited | Radio transmitter with linearization training sequence |
WO1993018581A1 (en) * | 1992-03-02 | 1993-09-16 | Motorola Limited | Rf power amplifier with linearizattion |
Family Cites Families (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4852090A (en) * | 1987-02-02 | 1989-07-25 | Motorola, Inc. | TDMA communications system with adaptive equalization |
US4998290A (en) * | 1988-05-09 | 1991-03-05 | Canadian Marconi Corporation | Frequency-hopping radio communication network |
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 ROA200101241A patent/RO119672B1/ro unknown
- 1993-10-07 DE DE4395427A patent/DE4395427C2/de not_active Expired - Lifetime
- 1993-10-07 DE DE4395427T patent/DE4395427T1/de active Granted
- 1993-10-07 CA CA002126987A patent/CA2126987C/en not_active Expired - Lifetime
- 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 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 RO RO94-01115A patent/RO119671B1/ro unknown
- 1993-10-07 PL PL93304341A patent/PL173528B1/pl unknown
- 1993-10-07 ES ES09450017A patent/ES2098185B1/es not_active Expired - Fee Related
- 1993-10-07 AT AT0901693A patent/AT407814B/de not_active IP Right Cessation
- 1993-10-07 HU HU9401972A patent/HU218633B/hu unknown
- 1993-10-07 AU AU51494/93A patent/AU664497B2/en not_active Expired
- 1993-10-07 US US08/256,299 patent/US5559807A/en not_active Expired - Lifetime
- 1993-10-07 NL NL9320020A patent/NL194188C/nl not_active IP Right Cessation
- 1993-10-07 RU RU94035751A patent/RU2109403C1/ru active
- 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 DK DK199400793A patent/DK173776B1/da not_active IP Right Cessation
- 1994-07-01 FI FI943189A patent/FI107095B/fi not_active IP Right Cessation
- 1994-07-01 SE SE9402325A patent/SE516994C2/sv 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
Patent Citations (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP0318686A2 (en) * | 1987-12-04 | 1989-06-07 | Motorola, Inc. | TDMA Radio system employing BPSK synchronisation for QPSK signals subject to random phase variation and multipath fading |
EP0363630A2 (de) * | 1988-09-22 | 1990-04-18 | Siemens Aktiengesellschaft | Verfahren zur Neusynchronisation einer Vermittlungsstelle in einem Fernmeldenetz |
EP0451909A2 (en) * | 1990-04-09 | 1991-10-16 | Siemens Telecomunicazioni S.P.A. | Predistortion linearizer for microwave power amplifiers |
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 |
WO1993018602A1 (en) * | 1992-03-02 | 1993-09-16 | Motorola Limited | Radio transmitter with linearization training sequence |
WO1993018581A1 (en) * | 1992-03-02 | 1993-09-16 | Motorola Limited | Rf power amplifier with linearizattion |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
EC2A | Search report published |
Date of ref document: 19970416 Kind code of ref document: A1 Effective date: 19970416 |
|
PC2A | Transfer of patent |
Owner name: MOTOROLA SOLUTIONS, INC. Effective date: 20120116 |
|
FD2A | Announcement of lapse in spain |
Effective date: 20141120 |