GB1503610A - Digital data transmission system - Google Patents

Digital data transmission system

Info

Publication number
GB1503610A
GB1503610A GB42953/75A GB4295375A GB1503610A GB 1503610 A GB1503610 A GB 1503610A GB 42953/75 A GB42953/75 A GB 42953/75A GB 4295375 A GB4295375 A GB 4295375A GB 1503610 A GB1503610 A GB 1503610A
Authority
GB
United Kingdom
Prior art keywords
phase
error
value
data
filter
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.)
Expired
Application number
GB42953/75A
Other languages
English (en)
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
International Business Machines Corp
Original Assignee
International Business Machines Corp
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by International Business Machines Corp filed Critical International Business Machines Corp
Publication of GB1503610A publication Critical patent/GB1503610A/en
Expired legal-status Critical Current

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

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Digital Transmission Methods That Use Modulated Carrier Waves (AREA)
GB42953/75A 1974-12-27 1975-10-20 Digital data transmission system Expired GB1503610A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR7443560A FR2296322A1 (fr) 1974-12-27 1974-12-27 Systeme de detection de donnees numeriques transmises par modulation d'une porteuse

Publications (1)

Publication Number Publication Date
GB1503610A true GB1503610A (en) 1978-03-15

Family

ID=9146898

Family Applications (1)

Application Number Title Priority Date Filing Date
GB42953/75A Expired GB1503610A (en) 1974-12-27 1975-10-20 Digital data transmission system

Country Status (6)

Country Link
US (1) US4024342A (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html)
JP (1) JPS5831064B2 (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html)
DE (1) DE2546116C2 (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html)
FR (1) FR2296322A1 (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html)
GB (1) GB1503610A (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html)
IT (1) IT1054431B (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2134355A (en) * 1983-01-12 1984-08-08 Ncr Co Circuit for reducing errors in a data receiver
GB2166311A (en) * 1984-10-25 1986-04-30 Gen Electric Co Plc Receiving apparatus
GB2183974B (en) * 1985-11-08 1989-10-04 Raytheon Co Improved qpsk demodulator

Families Citing this family (28)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4035625A (en) * 1975-07-31 1977-07-12 Milgo Electronic Corporation Method and apparatus for performing binary equalization in voice-band phase-modulation modems
US4052557A (en) * 1975-07-31 1977-10-04 Milgo Electronic Corporation Phase-jump detector and corrector method and apparatus for phase-modulated communication systems that also provides a signal quality indication
JPS5224410A (en) * 1975-08-20 1977-02-23 Fujitsu Ltd Carrier wave regenerative circuit
FR2337465A1 (fr) * 1975-12-30 1977-07-29 Ibm France Procede et dispositif pour determiner les valeurs initiales des coefficients d'un egaliseur transversal complexe
FR2358061A1 (fr) * 1976-07-08 1978-02-03 Ibm France Procede et dispositif d'egalisation utilisant la transformee de fourier
US4379947A (en) * 1979-02-02 1983-04-12 Teleprompter Corporation System for transmitting data simultaneously with audio
FR2455408B1 (fr) * 1979-04-27 1987-05-29 Cit Alcatel Procede de reduction des bruits de phase a la reception d'une transmission de donnees
FR2455406B1 (fr) * 1979-04-27 1987-05-29 Cit Alcatel Procede de compensation des bruits de phase a la reception d'une transmission de donnees
FR2468258B1 (fr) * 1979-10-19 1987-06-26 Cit Alcatel Circuit de correction des bruits de phase pour un systeme de transmission
US4538284A (en) * 1981-03-25 1985-08-27 Ese Limited Signal structures with data encoding/decoding for QCM modulations
EP0073869B1 (fr) * 1981-09-08 1985-12-27 International Business Machines Corporation Dispositif de réception de données avec suppresseur d'écho d'écoute
JPS5847357A (ja) * 1981-09-17 1983-03-19 Ricoh Co Ltd 自動位相制御方式
GB2118003B (en) * 1982-02-02 1985-07-31 Racal Milgo Ltd Differential encoder and decoder for transmitting binary data
US4646325A (en) * 1985-04-15 1987-02-24 Paradyne Corporation Index decoder for digital modems
US4748641A (en) * 1985-07-03 1988-05-31 Cincinnati Electronics Corporation Suppressed carrier modulation method
EP0235264A4 (en) * 1985-09-03 1990-02-26 Motorola Inc DIGITAL RADIO RECEIVER.
JPS6386863U (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html) * 1986-11-28 1988-06-06
FR2650137B1 (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html) * 1989-07-18 1994-10-28 France Etat
JPH03105947U (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html) * 1990-02-20 1991-11-01
JP3205111B2 (ja) * 1993-02-18 2001-09-04 富士通株式会社 変復調装置
US5465273A (en) * 1994-04-20 1995-11-07 General Datacomm, Inc. Modem utilizing parity and convolutional encoder feedback
KR100387233B1 (ko) * 1995-11-08 2003-08-19 삼성전자주식회사 데이터 저장기기의 데이터 검출방법 및 장치
JPH09284808A (ja) * 1996-04-11 1997-10-31 Sony Corp データ伝送装置
FR2752348B1 (fr) * 1996-08-07 1998-09-18 Telecommunications Sa Demodulateur a circuit numerique de recuperation de porteuse et de rythme
US5742637A (en) * 1996-08-20 1998-04-21 Golden Bridge Technology, Inc. Fast phase estimation in digital communication systems
US7917798B2 (en) 2005-10-04 2011-03-29 Hypres, Inc. Superconducting digital phase rotator
CN101615860B (zh) * 2009-07-23 2011-02-09 东南大学 应用于级联型变流器的一种调制方法
CN102611346B (zh) * 2012-04-19 2014-12-10 南车株洲电力机车研究所有限公司 一种三电平双模式空间矢量过调制方法及其系统

Family Cites Families (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3795865A (en) * 1972-02-23 1974-03-05 Honeywell Inf Systems Automated real time equalized modem
US3747065A (en) * 1972-05-12 1973-07-17 North American Rockwell System for correcting detected errors in a high speed digital data transmission system
US3924197A (en) * 1972-12-27 1975-12-02 Mitsubishi Electric Corp Circuit for reproducing reference carrier wave
FR2221861A1 (en) * 1972-12-29 1974-10-11 Teletransmissions Cie Eu Detection of frequency, phase and amplitude modulated signals - uses an analog-digital converter and binary memory
JPS5935228B2 (ja) * 1973-01-18 1984-08-27 シャープ株式会社 自動デイジタル変復調器
FR2216715B1 (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html) * 1973-01-31 1976-06-11 Ibm France
DE2416058B2 (de) 1973-07-12 1980-12-18 International Business Machines Corp., Armonk, N.Y. (V.St.A.) Verfahren und Schaltungsanordnungen zur Entzerrung eines quadraturmodulierten Datensignals
JPS5716546B2 (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html) * 1973-07-12 1982-04-06
US3935535A (en) * 1974-09-09 1976-01-27 Hycom Incorporated Fast equalization acquisition for automatic adaptive digital modem

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2134355A (en) * 1983-01-12 1984-08-08 Ncr Co Circuit for reducing errors in a data receiver
US4530104A (en) * 1983-01-12 1985-07-16 Ncr Corporation Circuit for reducing errors in a data receiver
GB2166311A (en) * 1984-10-25 1986-04-30 Gen Electric Co Plc Receiving apparatus
GB2183974B (en) * 1985-11-08 1989-10-04 Raytheon Co Improved qpsk demodulator

Also Published As

Publication number Publication date
JPS5187949A (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html) 1976-07-31
IT1054431B (it) 1981-11-10
FR2296322A1 (fr) 1976-07-23
FR2296322B1 (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html) 1977-07-08
JPS5831064B2 (ja) 1983-07-04
DE2546116A1 (de) 1976-07-08
US4024342A (en) 1977-05-17
DE2546116C2 (de) 1983-03-31

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Legal Events

Date Code Title Description
PS Patent sealed [section 19, patents act 1949]
PCNP Patent ceased through non-payment of renewal fee

Effective date: 19921020