NO964031D0 - Anordning for korreksjon av kvadraturfeil ved modulasjon/demodulasjon samt tilsvarende sender og mottager - Google Patents
Anordning for korreksjon av kvadraturfeil ved modulasjon/demodulasjon samt tilsvarende sender og mottagerInfo
- Publication number
- NO964031D0 NO964031D0 NO964031A NO964031A NO964031D0 NO 964031 D0 NO964031 D0 NO 964031D0 NO 964031 A NO964031 A NO 964031A NO 964031 A NO964031 A NO 964031A NO 964031 D0 NO964031 D0 NO 964031D0
- Authority
- NO
- Norway
- Prior art keywords
- demodulation
- correction
- receiver
- errors during
- corresponding 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
- H04L27/38—Demodulator circuits; Receiver circuits
- H04L27/3845—Demodulator circuits; Receiver circuits using non - coherent demodulation, i.e. not using a phase synchronous carrier
- H04L27/3854—Demodulator circuits; Receiver circuits using non - coherent demodulation, i.e. not using a phase synchronous carrier using a non - coherent carrier, including systems with baseband correction for phase or frequency offset
- H04L27/3863—Compensation for quadrature error in the received signal
-
- 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
- H04L27/362—Modulation using more than one carrier, e.g. with quadrature carriers, separately amplitude modulated
- H04L27/364—Arrangements for overcoming imperfections in the modulator, e.g. quadrature error or unbalanced I and Q levels
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L27/00—Modulated-carrier systems
- H04L27/0014—Carrier regulation
- H04L2027/0016—Stabilisation of local oscillators
Landscapes
- Engineering & Computer Science (AREA)
- Computer Networks & Wireless Communication (AREA)
- Signal Processing (AREA)
- Digital Transmission Methods That Use Modulated Carrier Waves (AREA)
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR9511315A FR2739239B1 (fr) | 1995-09-27 | 1995-09-27 | Dispositif de correction d'un defaut de quadrature d'un modulateur en quadrature et/ou d'un demodulateur d'un signal a pluralite d'etats de phase, emetteur et recepteur correspondants |
Publications (2)
Publication Number | Publication Date |
---|---|
NO964031D0 true NO964031D0 (no) | 1996-09-25 |
NO964031L NO964031L (no) | 1997-04-01 |
Family
ID=9482953
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
NO964031A NO964031L (no) | 1995-09-27 | 1996-09-25 | Anordning for korreksjon av kvadraturfeil ved modulasjon/demodulasjon samt tilsvarende sender og mottager |
Country Status (6)
Country | Link |
---|---|
US (1) | US5705958A (no) |
EP (1) | EP0766433A1 (no) |
JP (1) | JPH09116580A (no) |
CA (1) | CA2186634A1 (no) |
FR (1) | FR2739239B1 (no) |
NO (1) | NO964031L (no) |
Families Citing this family (14)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
IL130266A0 (en) * | 1996-12-24 | 2000-06-01 | Gte Government Syst | Symbol lock detector |
US5987069A (en) * | 1996-12-24 | 1999-11-16 | Gte Government Systems Corporation | Method and apparatus for variably allocating upstream and downstream communication spectra |
US6160855A (en) * | 1997-02-06 | 2000-12-12 | Mitsubishi Materials Corporation | Digital modulation method and digital communication system |
US6304594B1 (en) | 1998-07-27 | 2001-10-16 | General Dynamics Government Systems Corporation | Interference detection and avoidance technique |
US6298096B1 (en) | 1998-11-19 | 2001-10-02 | Titan Corporation | Method and apparatus for determination of predistortion parameters for a quadrature modulator |
US6212229B1 (en) | 1998-12-16 | 2001-04-03 | General Dynamics Government Systems Corporation | Adaptive pre-emphasis technique |
US6512800B1 (en) * | 1999-03-12 | 2003-01-28 | Lucent Technologies Inc. | Method and system for correcting phase and amplitude imbalances of a quadrature modulated RF signal |
US6671336B1 (en) * | 2000-05-16 | 2003-12-30 | Motorola, Inc. | Gain controller for circuit having in-phase and quadrature channels, and method |
AU2001214630A1 (en) * | 2000-11-03 | 2002-05-15 | Qualcomm Incorporated | Modulator with low sensitivity to amplitude and phase errors of the carrier signal |
US7382833B1 (en) * | 2001-08-16 | 2008-06-03 | Rockwell Collins, Inc. | System for phase, gain, and DC offset error correction for a quadrature modulator |
DE10342583B4 (de) * | 2003-09-15 | 2006-01-26 | Infineon Technologies Ag | Verfahren zur Trägerrestbestimmung in einer einen Vektormodulator umfassenden Anordnung |
JP6291990B2 (ja) * | 2014-04-15 | 2018-03-14 | 富士通株式会社 | 通信システム、受信装置および半導体装置 |
JP6340689B2 (ja) * | 2014-05-23 | 2018-06-13 | パナソニックIpマネジメント株式会社 | パルスレーダ装置、およびパルスレーダ装置の制御方法 |
US11387935B2 (en) * | 2021-02-19 | 2022-07-12 | Ultralogic 6G, Llc | Error detection and correction by modulation quality in 5G/6G |
Family Cites Families (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR2652965A1 (fr) * | 1989-10-06 | 1991-04-12 | Philips Electronique Lab | Dispositif de predistorsion pour systeme de transmission numerique. |
US5077757A (en) * | 1990-07-30 | 1991-12-31 | Motorola, Inc. | System for synthesizing a modulated signal |
US5111155A (en) * | 1991-03-04 | 1992-05-05 | Motorola, Inc. | Distortion compensation means and method |
EP0503588B1 (en) * | 1991-03-11 | 1997-10-01 | Nippon Telegraph And Telephone Corporation | Quadrature amplitude modulator with distortion compensation |
JPH05327808A (ja) * | 1992-05-20 | 1993-12-10 | Nec Corp | 直交変調回路 |
US5371481A (en) * | 1993-03-24 | 1994-12-06 | Nokia Mobile Phones Ltd. | Tuning techniques for I/Q channel signals in microwave digital transmission systems |
FR2711027B1 (fr) * | 1993-10-05 | 1995-11-17 | Ebauchesfabrik Eta Ag | Circuit de correction du déphasage et des amplitudes. |
-
1995
- 1995-09-27 FR FR9511315A patent/FR2739239B1/fr not_active Expired - Fee Related
-
1996
- 1996-09-24 EP EP96402020A patent/EP0766433A1/fr not_active Withdrawn
- 1996-09-25 NO NO964031A patent/NO964031L/no not_active Application Discontinuation
- 1996-09-26 US US08/721,207 patent/US5705958A/en not_active Expired - Fee Related
- 1996-09-26 CA CA002186634A patent/CA2186634A1/fr not_active Abandoned
- 1996-09-27 JP JP8256707A patent/JPH09116580A/ja active Pending
Also Published As
Publication number | Publication date |
---|---|
EP0766433A1 (fr) | 1997-04-02 |
US5705958A (en) | 1998-01-06 |
FR2739239B1 (fr) | 1997-11-14 |
FR2739239A1 (fr) | 1997-03-28 |
CA2186634A1 (fr) | 1997-03-28 |
JPH09116580A (ja) | 1997-05-02 |
NO964031L (no) | 1997-04-01 |
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Legal Events
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FC2A | Withdrawal, rejection or dismissal of laid open patent application |