FI944476A - Cartesian-tyyppinen monikantoaaltotakaisinkytkentä - Google Patents
Cartesian-tyyppinen monikantoaaltotakaisinkytkentä Download PDFInfo
- Publication number
- FI944476A FI944476A FI944476A FI944476A FI944476A FI 944476 A FI944476 A FI 944476A FI 944476 A FI944476 A FI 944476A FI 944476 A FI944476 A FI 944476A FI 944476 A FI944476 A FI 944476A
- Authority
- FI
- Finland
- Prior art keywords
- cartesian
- multiple carrier
- type multiple
- carrier feedback
- feedback
- Prior art date
Links
Classifications
-
- 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
-
- 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
- H04B1/0483—Transmitters with multiple parallel paths
-
- 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
- H03F1/34—Negative-feedback-circuit arrangements with or without positive feedback
-
- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03F—AMPLIFIERS
- H03F3/00—Amplifiers with only discharge tubes or only semiconductor devices as amplifying elements
- H03F3/20—Power amplifiers, e.g. Class B amplifiers, Class C amplifiers
- H03F3/24—Power amplifiers, e.g. Class B amplifiers, Class C amplifiers of transmitter output stages
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L27/00—Modulated-carrier systems
- H04L27/26—Systems using multi-frequency codes
- H04L27/2601—Multicarrier modulation systems
- H04L27/2626—Arrangements specific to the transmitter only
- H04L27/2627—Modulators
- H04L27/2637—Modulators with direct modulation of individual subcarriers
-
- 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
- H04B2001/0408—Circuits with power amplifiers
- H04B2001/0433—Circuits with power amplifiers with linearisation using feedback
Landscapes
- Engineering & Computer Science (AREA)
- Computer Networks & Wireless Communication (AREA)
- Signal Processing (AREA)
- Power Engineering (AREA)
- Transmitters (AREA)
- Preparation Of Compounds By Using Micro-Organisms (AREA)
- Optical Communication System (AREA)
- Spectrometry And Color Measurement (AREA)
- Amplifiers (AREA)
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US08/010,336 US5551070A (en) | 1993-01-28 | 1993-01-28 | Cartesian multicarrier feedback |
PCT/SE1994/000036 WO1994017599A1 (en) | 1993-01-28 | 1994-01-19 | Cartesian multicarrier feedback |
Publications (2)
Publication Number | Publication Date |
---|---|
FI944476A0 FI944476A0 (fi) | 1994-09-27 |
FI944476A true FI944476A (fi) | 1994-09-27 |
Family
ID=21745263
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
FI944476A FI944476A (fi) | 1993-01-28 | 1994-09-27 | Cartesian-tyyppinen monikantoaaltotakaisinkytkentä |
Country Status (14)
Country | Link |
---|---|
US (1) | US5551070A (fi) |
EP (1) | EP0647374A1 (fi) |
JP (1) | JP3253085B2 (fi) |
KR (1) | KR100294177B1 (fi) |
CN (1) | CN1034458C (fi) |
AU (1) | AU670676B2 (fi) |
BR (1) | BR9403896A (fi) |
CA (1) | CA2132089A1 (fi) |
FI (1) | FI944476A (fi) |
MX (1) | MX9400663A (fi) |
MY (1) | MY110477A (fi) |
NZ (1) | NZ261182A (fi) |
TW (1) | TW284941B (fi) |
WO (1) | WO1994017599A1 (fi) |
Families Citing this family (16)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5768693A (en) * | 1995-02-28 | 1998-06-16 | Telecommunications Equipment Corporation | Method and apparatus for controlling frequency of a multi-channel transmitter |
KR0155818B1 (ko) * | 1995-04-29 | 1998-11-16 | 김광호 | 다중 반송파 전송시스템에서 적응형 전력 분배 방법 및 장치 |
FR2735636B1 (fr) * | 1995-06-16 | 1997-07-25 | Thomson Csf | Procede et dispositif de surechantillonnage et de transposition en frequence d'un signal radio numerique |
US5894496A (en) * | 1996-09-16 | 1999-04-13 | Ericsson Inc. | Method and apparatus for detecting and compensating for undesired phase shift in a radio transceiver |
US6097712A (en) * | 1997-06-20 | 2000-08-01 | Nortel Networks Limited | Multi-carrier CDMA communications systems |
GB9715278D0 (en) | 1997-07-18 | 1997-09-24 | Cambridge Consultants | Signal processing system |
IT1294284B1 (it) | 1997-07-29 | 1999-03-24 | Italtel Spa | Radiotrasmettitore a larga banda per un segnale costituito da una pluralita' di portanti equispaziate modulate digitalmente |
US6131016A (en) * | 1997-08-27 | 2000-10-10 | At&T Corp | Method and apparatus for enhancing communication reception at a wireless communication terminal |
IT1305710B1 (it) * | 1998-12-11 | 2001-05-15 | Itelco S P A | Metodo per la trasmissione di piu' segnali di tipo broadcast |
AU2163399A (en) | 1998-12-24 | 2000-07-31 | Nokia Networks Oy | Multi-frequency transmitter using predistortion and a method of transmitting |
SE515636C2 (sv) * | 2000-01-25 | 2001-09-17 | Ericsson Telefon Ab L M | Metod och anordning för att reglera utsänd effekt i ett telekommunikationssystem |
US8107901B2 (en) * | 2001-08-20 | 2012-01-31 | Motorola Solutions, Inc. | Feedback loop with adjustable bandwidth |
US7127211B2 (en) * | 2002-02-21 | 2006-10-24 | Telefonaktiebolaget Lm Ericsson (Publ) | Method and apparatus for reduced intermodulation distortion in a radio transceiver |
EP1361655A1 (en) * | 2002-05-07 | 2003-11-12 | Semiconductor Ideas to The Market (ItoM) BV | Mirror suppression circuit in a quadrature demodulator |
US7116726B2 (en) | 2002-08-12 | 2006-10-03 | Cubic Corporation | Method and apparatus for transferring multiple symbol streams at low bit-error rates in a narrowband channel |
US20120263161A1 (en) * | 2009-12-22 | 2012-10-18 | Aeromechanical Services Ltd. | Multiple satellite modem system using a single antenna |
Family Cites Families (13)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5329008A (en) * | 1976-08-30 | 1978-03-17 | Nec Corp | Supervision control uni t of radio transmitter output level |
US4490684A (en) * | 1983-01-03 | 1984-12-25 | Motorola, Inc. | Adaptive quadrature combining apparatus |
US4560945A (en) * | 1984-09-04 | 1985-12-24 | Westinghouse Electric Corp. | Adaptive feedforward cancellation technique that is effective in reducing amplifier harmonic distortion products as well as intermodulation distortion products |
US4726071A (en) * | 1984-12-31 | 1988-02-16 | Orion Industries, Inc. | Microprocessor controlled self-tuning resonant cavity and method |
GB8629529D0 (en) * | 1986-12-10 | 1987-01-21 | Gen Electric Co Plc | Radio transmitter arrangements |
US5163181A (en) * | 1988-10-21 | 1992-11-10 | Harris Corporation | Multiple rf signal amplification method and apparatus |
JPH02143719A (ja) * | 1988-11-25 | 1990-06-01 | Nec Corp | マルチキャリア送信装置の送信電力制御方式 |
GB9002788D0 (en) * | 1990-02-08 | 1990-04-04 | Marconi Co Ltd | Circuit for reducing distortion produced by an r.f.power amplifier |
US5140627A (en) * | 1990-10-09 | 1992-08-18 | Telefonaktiebolaget L M Ericsson | Handoff procedure that minimizes disturbances to dtmf signalling in a cellular radio system |
US5134718A (en) * | 1990-10-31 | 1992-07-28 | Motorola, Inc. | Fast phase shift adjusting method and device for linear transmitter |
US5066923A (en) * | 1990-10-31 | 1991-11-19 | Motorola, Inc. | Linear transmitter training method and apparatus |
US5257415A (en) * | 1991-03-20 | 1993-10-26 | Fujitsu Limited | Automatic transmission level control device |
US5302914A (en) * | 1992-10-20 | 1994-04-12 | At&T Bell Laboratories | Method and apparatus for reducing the peak-to-average power in multi-carrier RF communication systems |
-
1993
- 1993-01-28 US US08/010,336 patent/US5551070A/en not_active Expired - Lifetime
-
1994
- 1994-01-19 CA CA002132089A patent/CA2132089A1/en not_active Abandoned
- 1994-01-19 WO PCT/SE1994/000036 patent/WO1994017599A1/en not_active Application Discontinuation
- 1994-01-19 NZ NZ261182A patent/NZ261182A/en unknown
- 1994-01-19 KR KR1019940703371A patent/KR100294177B1/ko not_active IP Right Cessation
- 1994-01-19 JP JP51691894A patent/JP3253085B2/ja not_active Expired - Lifetime
- 1994-01-19 AU AU59816/94A patent/AU670676B2/en not_active Ceased
- 1994-01-19 EP EP94905890A patent/EP0647374A1/en not_active Withdrawn
- 1994-01-19 BR BR9403896A patent/BR9403896A/pt not_active Application Discontinuation
- 1994-01-19 CN CN94190033A patent/CN1034458C/zh not_active Expired - Fee Related
- 1994-01-21 MY MYPI94000166A patent/MY110477A/en unknown
- 1994-01-25 MX MX9400663A patent/MX9400663A/es not_active IP Right Cessation
- 1994-01-27 TW TW083100677A patent/TW284941B/zh active
- 1994-09-27 FI FI944476A patent/FI944476A/fi unknown
Also Published As
Publication number | Publication date |
---|---|
TW284941B (fi) | 1996-09-01 |
KR100294177B1 (ko) | 2001-09-17 |
CN1102937A (zh) | 1995-05-24 |
JPH07508151A (ja) | 1995-09-07 |
US5551070A (en) | 1996-08-27 |
FI944476A0 (fi) | 1994-09-27 |
NZ261182A (en) | 1996-07-26 |
CN1034458C (zh) | 1997-04-02 |
WO1994017599A1 (en) | 1994-08-04 |
MX9400663A (es) | 1994-08-31 |
AU670676B2 (en) | 1996-07-25 |
AU5981694A (en) | 1994-08-15 |
JP3253085B2 (ja) | 2002-02-04 |
KR950701162A (ko) | 1995-02-20 |
BR9403896A (pt) | 1999-06-01 |
MY110477A (en) | 1998-05-30 |
EP0647374A1 (en) | 1995-04-12 |
CA2132089A1 (en) | 1994-07-29 |
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