FR2455408A1 - Procede de reduction des bruits de phase a la reception d'une transmission de donnees - Google Patents
Procede de reduction des bruits de phase a la reception d'une transmission de donneesInfo
- Publication number
- FR2455408A1 FR2455408A1 FR7910808A FR7910808A FR2455408A1 FR 2455408 A1 FR2455408 A1 FR 2455408A1 FR 7910808 A FR7910808 A FR 7910808A FR 7910808 A FR7910808 A FR 7910808A FR 2455408 A1 FR2455408 A1 FR 2455408A1
- Authority
- FR
- France
- Prior art keywords
- decision circuit
- symbol
- estimation
- reception
- instant
- 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
- H04L25/00—Baseband systems
- H04L25/02—Details ; arrangements for supplying electrical power along data transmission lines
- H04L25/03—Shaping networks in transmitter or receiver, e.g. adaptive shaping networks
- H04L25/03006—Arrangements for removing intersymbol interference
- H04L25/03012—Arrangements for removing intersymbol interference operating in the time domain
- H04L25/03019—Arrangements for removing intersymbol interference operating in the time domain adaptive, i.e. capable of adjustment during data reception
- H04L25/03038—Arrangements for removing intersymbol interference operating in the time domain adaptive, i.e. capable of adjustment during data reception with a non-recursive structure
Landscapes
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Computer Networks & Wireless Communication (AREA)
- Signal Processing (AREA)
- Cable Transmission Systems, Equalization Of Radio And Reduction Of Echo (AREA)
- Digital Transmission Methods That Use Modulated Carrier Waves (AREA)
Abstract
LA PRESENTE INVENTION CONCERNE LES TRANSMISSINS SYNCHRONES DE DONNEES EMPLOYANT UNE CADENCE DE MODULATION 1DT ET COMPORTANT EN RECEPTION UN CIRCUIT DE DECISION FOURNISSANT UNE ESTIMATION DES SYMBOLES EMIS A PARTIR DES SYMBOLES RECUS. ELLE A POUR OBJET UN PROCEDE DE REDUCTION DES BRUITS DE PHASE EN RECEPTION CONSISTANT EN CE QUE, AVANT D'ETRE APPLIQUES AU CIRCUIT DE DECISION, LES SYMBOLES RECUS MIS SOUS FORME COMPLEXE AVEC LEURS COMPOSANTES EN PHASE ET EN QUADRATURE SONT MULTIPLIES PAR UN COEFFICIENT COMPLEXE DEFINI PAR UNE RELATION DE LA FORME: (CF DESSIN DANS BOPI) DANS LAQUELLE L EST UN COEFFICIEN REEL, Y LE CONJUGUE DU SYMBOLE RECU A UN INSTANT KDTT, V LE SYMBOLE APPLIQUE AUDIT INSTANT AU CIRCUIT DE DECISION, A L'ESTIMATION DU SYMBOLE RECU AUDIT INSTANT, E UN SIGNAL D'ERREUR TIRE DE LA DIFFERENCE DE PHASE EXISTANT ENTRE LE SYMBOLE APPLIQUE AU CIRCUIT DE DECISION ET L'ESTIMATION QUI EN EST FAITE PAR CE DERNER A L'INSTANT J. DTT, ET F (E) UNE FONCTION LINEAIRE AUX DIFFERENCES DU PREMIER ORDRE AU MOINS. CE PROCEDE S'APPLIQUE AVANTAGEUSEMENT AUX TRANSMISSIONS DE DONNEES A MODULATION D'AMPLITUDE DE DEUX PORTEUSES EN QUADRATURE.
Priority Applications (10)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR7910808A FR2455408B1 (fr) | 1979-04-27 | 1979-04-27 | Procede de reduction des bruits de phase a la reception d'une transmission de donnees |
GB8013351A GB2048020B (en) | 1979-04-27 | 1980-04-23 | Method of reducing phase noise at the receiver end of a data transmission system |
IT67660/80A IT1128776B (it) | 1979-04-27 | 1980-04-24 | Procedimento per la riduzione dei rumori di fase nella ricezione di una trasmissione di dati |
BE0/200353A BE882954A (fr) | 1979-04-27 | 1980-04-24 | Procede de reducton des bruits de phase a la reception d'une transmission de donnees |
LU82402A LU82402A1 (fr) | 1979-04-27 | 1980-04-25 | Procede de reduction des bruits de phase a la reception d'une transmission de donnees |
IE836/80A IE49587B1 (en) | 1979-04-27 | 1980-04-25 | Method of reducing phase noise at the receiver end of a data transmission system |
CA000350724A CA1137177A (fr) | 1979-04-27 | 1980-04-25 | Procede de reduction des bruits de phase a la reception d'une transmission de donnees |
DE19803016352 DE3016352A1 (de) | 1979-04-27 | 1980-04-28 | Verfahren zur verringerung des phasenrauschens beim empfang von datensignalen |
NL8002478A NL8002478A (nl) | 1979-04-27 | 1980-04-28 | Werkwijze ter reductie van faseverstoringen aan de ont- vangstzijde van een gegevenstransmissiekanaal. |
US06/144,098 US4306307A (en) | 1979-04-27 | 1980-04-28 | Method of reducing phase noise at the receiver end of a data transmission system |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR7910808A FR2455408B1 (fr) | 1979-04-27 | 1979-04-27 | Procede de reduction des bruits de phase a la reception d'une transmission de donnees |
Publications (2)
Publication Number | Publication Date |
---|---|
FR2455408A1 true FR2455408A1 (fr) | 1980-11-21 |
FR2455408B1 FR2455408B1 (fr) | 1987-05-29 |
Family
ID=9224862
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
FR7910808A Expired FR2455408B1 (fr) | 1979-04-27 | 1979-04-27 | Procede de reduction des bruits de phase a la reception d'une transmission de donnees |
Country Status (10)
Country | Link |
---|---|
US (1) | US4306307A (fr) |
BE (1) | BE882954A (fr) |
CA (1) | CA1137177A (fr) |
DE (1) | DE3016352A1 (fr) |
FR (1) | FR2455408B1 (fr) |
GB (1) | GB2048020B (fr) |
IE (1) | IE49587B1 (fr) |
IT (1) | IT1128776B (fr) |
LU (1) | LU82402A1 (fr) |
NL (1) | NL8002478A (fr) |
Families Citing this family (10)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB2134355B (en) * | 1983-01-12 | 1986-03-05 | Ncr Co | Circuit for reducing errors in a data receiver |
IT1159580B (it) * | 1983-05-05 | 1987-03-04 | Cselt Centro Studi Lab Telecom | Perfezionamenti agli equalizzatori per la correzione di segnali numerici con un ramo di post decisione e un ramo di pre decisione in parallelo |
US4616252A (en) * | 1984-07-16 | 1986-10-07 | Rca Corporation | Sampled color difference signal processing system having a quadrature distortion reduction differentiator |
US4631734A (en) * | 1985-03-21 | 1986-12-23 | At&T Bell Laboratories | Cross-polarization canceler/equalizer |
US4696017A (en) * | 1986-02-03 | 1987-09-22 | E-Systems, Inc. | Quadrature signal generator having digitally-controlled phase and amplitude correction |
US4870480A (en) * | 1988-06-13 | 1989-09-26 | Rca Licensing Corporation | Subnyquist demodulator as for a television receiver |
US4943982A (en) * | 1989-05-01 | 1990-07-24 | Motorola, Inc. | Baseband carrier phase corrector |
US5109532A (en) * | 1990-01-30 | 1992-04-28 | General Instrument Corporation | Elimination of phase noise and drift incident to up and down conversion in a broadcast communication system |
US5157697A (en) * | 1991-03-21 | 1992-10-20 | Novatel Communications, Ltd. | Receiver employing correlation technique for canceling cross-talk between in-phase and quadrature channels prior to decoding |
CN110988765B (zh) * | 2019-12-25 | 2022-03-04 | 东软医疗系统股份有限公司 | 一种磁共振相位校正方法和装置 |
Family Cites Families (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3971996A (en) * | 1973-01-18 | 1976-07-27 | Hycom Incorporated | Phase tracking network |
NL171215C (nl) * | 1973-03-09 | 1983-02-16 | Trt Telecom Radio Electr | Automatische egalisatie-inrichting voor een datatransmissiekanaal. |
US3878468A (en) * | 1974-01-30 | 1975-04-15 | Bell Telephone Labor Inc | Joint equalization and carrier recovery adaptation in data transmission systems |
FR2296322A1 (fr) * | 1974-12-27 | 1976-07-23 | Ibm France | Systeme de detection de donnees numeriques transmises par modulation d'une porteuse |
US3974449A (en) * | 1975-03-21 | 1976-08-10 | Bell Telephone Laboratories, Incorporated | Joint decision feedback equalization and carrier recovery adaptation in data transmission systems |
US4053837A (en) * | 1975-06-11 | 1977-10-11 | Motorola Inc. | Quadriphase shift keyed adaptive equalizer |
CH604425A5 (fr) * | 1975-12-31 | 1978-09-15 | Ibm | |
FR2354003A1 (fr) * | 1976-06-04 | 1977-12-30 | Anvar | Perfectionnements aux systemes de transmission de donnees |
-
1979
- 1979-04-27 FR FR7910808A patent/FR2455408B1/fr not_active Expired
-
1980
- 1980-04-23 GB GB8013351A patent/GB2048020B/en not_active Expired
- 1980-04-24 IT IT67660/80A patent/IT1128776B/it active
- 1980-04-24 BE BE0/200353A patent/BE882954A/fr not_active IP Right Cessation
- 1980-04-25 IE IE836/80A patent/IE49587B1/en not_active IP Right Cessation
- 1980-04-25 LU LU82402A patent/LU82402A1/fr unknown
- 1980-04-25 CA CA000350724A patent/CA1137177A/fr not_active Expired
- 1980-04-28 US US06/144,098 patent/US4306307A/en not_active Expired - Lifetime
- 1980-04-28 NL NL8002478A patent/NL8002478A/nl not_active Application Discontinuation
- 1980-04-28 DE DE19803016352 patent/DE3016352A1/de active Granted
Also Published As
Publication number | Publication date |
---|---|
GB2048020A (en) | 1980-12-03 |
CA1137177A (fr) | 1982-12-07 |
GB2048020B (en) | 1983-06-15 |
BE882954A (fr) | 1980-10-24 |
DE3016352C2 (fr) | 1989-01-26 |
IE800836L (en) | 1980-10-27 |
LU82402A1 (fr) | 1980-07-31 |
IT8067660A0 (it) | 1980-04-24 |
IT1128776B (it) | 1986-06-04 |
FR2455408B1 (fr) | 1987-05-29 |
US4306307A (en) | 1981-12-15 |
DE3016352A1 (de) | 1980-11-13 |
NL8002478A (nl) | 1980-10-29 |
IE49587B1 (en) | 1985-10-30 |
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