FR2149552A1 - - Google Patents
Info
- Publication number
- FR2149552A1 FR2149552A1 FR7229597A FR7229597A FR2149552A1 FR 2149552 A1 FR2149552 A1 FR 2149552A1 FR 7229597 A FR7229597 A FR 7229597A FR 7229597 A FR7229597 A FR 7229597A FR 2149552 A1 FR2149552 A1 FR 2149552A1
- Authority
- FR
- France
- 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
- H04L27/18—Phase-modulated carrier systems, i.e. using phase-shift keying
- H04L27/20—Modulator circuits; Transmitter circuits
- H04L27/2032—Modulator circuits; Transmitter circuits for discrete phase modulation, e.g. in which the phase of the carrier is modulated in a nominally instantaneous manner
- H04L27/2053—Modulator circuits; Transmitter circuits for discrete phase modulation, e.g. in which the phase of the carrier is modulated in a nominally instantaneous manner using more than one carrier, e.g. carriers with different phases
- H04L27/206—Modulator circuits; Transmitter circuits for discrete phase modulation, e.g. in which the phase of the carrier is modulated in a nominally instantaneous manner using more than one carrier, e.g. carriers with different phases using a pair of orthogonal carriers, e.g. quadrature carriers
- H04L27/2067—Modulator circuits; Transmitter circuits for discrete phase modulation, e.g. in which the phase of the carrier is modulated in a nominally instantaneous manner using more than one carrier, e.g. carriers with different phases using a pair of orthogonal carriers, e.g. quadrature carriers with more than two phase states
- H04L27/2071—Modulator circuits; Transmitter circuits for discrete phase modulation, e.g. in which the phase of the carrier is modulated in a nominally instantaneous manner using more than one carrier, e.g. carriers with different phases using a pair of orthogonal carriers, e.g. quadrature carriers with more than two phase states in which the data are represented by the carrier phase, e.g. systems with differential coding
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L27/00—Modulated-carrier systems
- H04L27/18—Phase-modulated carrier systems, i.e. using phase-shift keying
- H04L27/22—Demodulator circuits; Receiver circuits
- H04L27/227—Demodulator circuits; Receiver circuits using coherent demodulation
- H04L27/2275—Demodulator circuits; Receiver circuits using coherent demodulation wherein the carrier recovery circuit uses the received modulated signals
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 |
---|---|---|---|
US17319171A | 1971-08-19 | 1971-08-19 |
Publications (2)
Publication Number | Publication Date |
---|---|
FR2149552A1 true FR2149552A1 (fr) | 1973-03-30 |
FR2149552B1 FR2149552B1 (fr) | 1977-10-07 |
Family
ID=22630908
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
FR7229597A Expired FR2149552B1 (fr) | 1971-08-19 | 1972-08-18 |
Country Status (11)
Country | Link |
---|---|
US (1) | US3736507A (fr) |
JP (1) | JPS5738064B2 (fr) |
AU (1) | AU461404B2 (fr) |
BE (1) | BE787749A (fr) |
CA (1) | CA970435A (fr) |
DE (1) | DE2240537C2 (fr) |
FR (1) | FR2149552B1 (fr) |
GB (1) | GB1399625A (fr) |
IT (1) | IT965115B (fr) |
NL (1) | NL175776C (fr) |
SE (1) | SE382898B (fr) |
Families Citing this family (26)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3931472A (en) * | 1972-02-14 | 1976-01-06 | Avantek, Inc. | Asynchronous quadriphase communications system and method |
US3838350A (en) * | 1972-08-04 | 1974-09-24 | Westinghouse Electric Corp | Differential encoded quadriphase demodulator |
US3984634A (en) * | 1973-11-02 | 1976-10-05 | The United States Of America | Anti-multipath digital signal detector |
JPS5518085B2 (fr) * | 1974-08-14 | 1980-05-16 | ||
US3955141A (en) * | 1974-10-18 | 1976-05-04 | Intertel, Inc. | Synchronizing circuit for modems in a data communications network |
JPS5754980B2 (fr) * | 1974-10-31 | 1982-11-20 | ||
IT1059262B (it) * | 1975-04-08 | 1982-05-31 | Licentia Gmbh | Procedimento di ricezione della parola di codice |
IT1062938B (it) * | 1975-05-30 | 1985-02-11 | Licentia Gmbh | Procedimento di ricezione della parola di codice |
JPS5650652A (en) * | 1979-07-31 | 1981-05-07 | Nec Corp | Digital signal transmission system via multiphase/ multivalue modulation wave |
JPS5643855A (en) * | 1979-09-18 | 1981-04-22 | Nec Corp | Digital multilevel, multiphase modulation-demodulation system |
FR2486741B1 (fr) * | 1980-07-11 | 1988-03-11 | Telecommunications Sa | Procede et dispositif pour lever l'ambiguite de phase dans une liaison a modulation de phase quadrivalente |
DE3125894C1 (de) * | 1981-07-01 | 1982-11-04 | Licentia Patent-Verwaltungs-Gmbh, 6000 Frankfurt | Digitales Signaluebertragungssystem,insbesondere fuer Satelliten-Rundfunk |
JPS58194450A (ja) * | 1982-05-07 | 1983-11-12 | Nec Corp | 復調装置 |
US4494239A (en) * | 1982-05-26 | 1985-01-15 | At&T Bell Laboratories | Frame synchronization and phase ambiguity resolution in QAM transmission systems |
US4594727A (en) * | 1983-01-05 | 1986-06-10 | Universal Data Systems | Synchronous receiver |
JPS60500555A (ja) * | 1983-02-04 | 1985-04-18 | マツクミツチエル リミテツド | 復調器 |
CH668873A5 (de) * | 1985-07-15 | 1989-01-31 | Bbc Brown Boveri & Cie | Verfahren zur uebertragung digitaler daten. |
JPS63245158A (ja) * | 1987-03-31 | 1988-10-12 | Nec Corp | 位相偏移変調信号の受信回路 |
US5025455A (en) * | 1989-11-30 | 1991-06-18 | The United States Of America As Represented By The Administer, National Aeronautics And Space Administration | Phase ambiguity resolution for offset QPSK modulation systems |
US5299236A (en) * | 1992-11-13 | 1994-03-29 | Toshiba America Information Systems, Inc. | System and method for obtaining and maintaining synchronization of a demodulated signal |
JP2522144B2 (ja) * | 1993-01-14 | 1996-08-07 | 日本電気株式会社 | 位相曖昧度除去回路 |
JP2513116B2 (ja) * | 1993-03-19 | 1996-07-03 | 日本電気株式会社 | 位相曖昧度除去回路 |
US6487735B1 (en) * | 1999-01-22 | 2002-12-03 | Hill-Rom Services, Inc. | Bed enclosure |
JP3252820B2 (ja) | 1999-02-24 | 2002-02-04 | 日本電気株式会社 | 復調及び変調回路並びに復調及び変調方法 |
GB2459478A (en) * | 2008-04-23 | 2009-10-28 | Audium Semiconductor Ltd | Telecommunication System with simplified Receiver |
US8594244B2 (en) * | 2009-04-06 | 2013-11-26 | Mediatek Inc. | Data signal phase reversal correction method and system implementing the same |
Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR1390008A (fr) * | 1964-04-16 | 1965-02-19 | Philips Nv | Dispositif récepteur pour impulsions modulant une onde porteuse par saut de phase |
Family Cites Families (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3134855A (en) * | 1960-10-07 | 1964-05-26 | Bell Telephone Labor Inc | Pulse communication system |
US3289082A (en) * | 1963-05-31 | 1966-11-29 | Gen Electric | Phase shift data transmission system with phase-coherent data recovery |
DE1222103B (de) * | 1964-12-21 | 1966-08-04 | Telefunken Patent | Schaltungsanordnung zur Bildung der Phasendifferenz bei einem Datenuebertragungssystem mit quaternaerer Phasendifferenzumtastung |
US3614623A (en) * | 1969-04-21 | 1971-10-19 | North American Rockwell | Adaptive system for correction of distortion of signals in transmission of digital data |
-
1971
- 1971-08-19 US US00173191A patent/US3736507A/en not_active Expired - Lifetime
-
1972
- 1972-08-04 CA CA148,732A patent/CA970435A/en not_active Expired
- 1972-08-16 SE SE7210599A patent/SE382898B/xx unknown
- 1972-08-17 AU AU45716/72A patent/AU461404B2/en not_active Expired
- 1972-08-17 DE DE2240537A patent/DE2240537C2/de not_active Expired
- 1972-08-18 BE BE787749A patent/BE787749A/fr not_active IP Right Cessation
- 1972-08-18 NL NLAANVRAGE7211350,A patent/NL175776C/xx not_active IP Right Cessation
- 1972-08-18 IT IT69666/72A patent/IT965115B/it active
- 1972-08-18 GB GB3866472A patent/GB1399625A/en not_active Expired
- 1972-08-18 FR FR7229597A patent/FR2149552B1/fr not_active Expired
- 1972-08-19 JP JP8327872A patent/JPS5738064B2/ja not_active Expired
Patent Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR1390008A (fr) * | 1964-04-16 | 1965-02-19 | Philips Nv | Dispositif récepteur pour impulsions modulant une onde porteuse par saut de phase |
Non-Patent Citations (2)
Title |
---|
ELECTRONICS, 8 septembre 1961, volume 34; Article de WIDMANN: 'Detecting Transmission Errors in phase shift Keying Systems', pages 76 à 79 * |
IEEE Transactions on Communication Technology; volume COH-19, no. 6, décembre 1971; Article de CACCIAMANI: 'Phase-Ambiguity Resolution in a Four-Phase PSK Communications System', pages 1200 à 1210 * |
Also Published As
Publication number | Publication date |
---|---|
NL175776B (nl) | 1984-07-16 |
AU4571672A (en) | 1974-02-21 |
SE382898B (sv) | 1976-02-16 |
NL7211350A (fr) | 1973-02-21 |
DE2240537C2 (de) | 1982-04-15 |
AU461404B2 (en) | 1975-05-22 |
FR2149552B1 (fr) | 1977-10-07 |
GB1399625A (en) | 1975-07-02 |
BE787749A (fr) | 1972-12-18 |
JPS5738064B2 (fr) | 1982-08-13 |
DE2240537A1 (de) | 1973-02-22 |
US3736507A (en) | 1973-05-29 |
CA970435A (en) | 1975-07-01 |
JPS4830308A (fr) | 1973-04-21 |
IT965115B (it) | 1974-01-31 |
NL175776C (nl) | 1984-12-17 |