DK417682A - Digitalt kommunikationsapparat - Google Patents

Digitalt kommunikationsapparat Download PDF

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Publication number
DK417682A
DK417682A DK417682A DK417682A DK417682A DK 417682 A DK417682 A DK 417682A DK 417682 A DK417682 A DK 417682A DK 417682 A DK417682 A DK 417682A DK 417682 A DK417682 A DK 417682A
Authority
DK
Denmark
Prior art keywords
message
signal
som
modem
data bit
Prior art date
Application number
DK417682A
Other languages
English (en)
Other versions
DK159233C (da
DK159233B (da
Inventor
R G Wilkinson
Original Assignee
Secr Defence Brit
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 Secr Defence Brit filed Critical Secr Defence Brit
Publication of DK417682A publication Critical patent/DK417682A/da
Publication of DK159233B publication Critical patent/DK159233B/da
Application granted granted Critical
Publication of DK159233C publication Critical patent/DK159233C/da

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L1/00—Arrangements for detecting or preventing errors in the information received
    • H04L1/20—Arrangements for detecting or preventing errors in the information received using signal quality detector
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L1/00—Arrangements for detecting or preventing errors in the information received
    • H04L1/0078—Avoidance of errors by organising the transmitted data in a format specifically designed to deal with errors, e.g. location
    • H04L1/0083—Formatting with frames or packets; Protocol or part of protocol for error control
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L1/00—Arrangements for detecting or preventing errors in the information received
    • H04L1/02—Arrangements for detecting or preventing errors in the information received by diversity reception
    • 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
    • H04L27/30—Systems using multi-frequency codes wherein each code element is represented by a combination of frequencies

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Quality & Reliability (AREA)
  • Detection And Prevention Of Errors In Transmission (AREA)
  • Radio Transmission System (AREA)
  • Digital Transmission Methods That Use Modulated Carrier Waves (AREA)
  • Noise Elimination (AREA)
  • Time-Division Multiplex Systems (AREA)
DK417682A 1981-01-29 1982-09-20 Digitalt kommunikationsapparat DK159233C (da)

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
GB8102714 1981-01-29
GB8102714 1981-01-29
PCT/GB1982/000025 WO1982002633A1 (en) 1981-01-29 1982-01-27 High frequency communications
GB8200025 1982-01-27

Publications (3)

Publication Number Publication Date
DK417682A true DK417682A (da) 1982-09-20
DK159233B DK159233B (da) 1990-09-17
DK159233C DK159233C (da) 1991-03-04

Family

ID=10519317

Family Applications (1)

Application Number Title Priority Date Filing Date
DK417682A DK159233C (da) 1981-01-29 1982-09-20 Digitalt kommunikationsapparat

Country Status (6)

Country Link
US (1) US4606047A (da)
EP (1) EP0070287B1 (da)
JP (2) JPH0642658B2 (da)
DE (1) DE3264346D1 (da)
DK (1) DK159233C (da)
WO (1) WO1982002633A1 (da)

Families Citing this family (19)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2140254B (en) * 1980-11-21 1985-09-25 Western Electric Co Mobile radio system
DE3338510A1 (de) * 1983-10-22 1985-05-02 ANT Nachrichtentechnik GmbH, 7150 Backnang Verfahren zur wiedergewinnung der information eines datensignals bei mehrwegeuebertragung
GB2182529A (en) * 1985-10-30 1987-05-13 Philips Electronic Associated Digital communication of analogue signals
CH671124A5 (da) * 1986-04-30 1989-07-31 Zellweger Uster Ag
CH673550A5 (da) * 1987-09-29 1990-03-15 Zellweger Telecomm Ag
US4963744A (en) * 1989-06-26 1990-10-16 Gas Research Institute Method and apparatus for providing accurate low noise demodulation
DE3934384A1 (de) * 1989-10-14 1991-04-18 Kommunikations Elektronik Verfahren zur verstaerkung eines burst-signals
US5127404A (en) * 1990-01-22 1992-07-07 Medtronic, Inc. Telemetry format for implanted medical device
GB9010637D0 (en) * 1990-05-11 1990-07-04 Secr Defence A high frequency multichannel diversity differential phase shift(dpsk)communications system
DE4018044A1 (de) * 1990-06-06 1991-12-12 Philips Patentverwaltung Empfaenger mit mindestens zwei empfangszweigen
DE4326694C2 (de) * 1993-08-10 2003-12-24 Gunther Krieg Vorrichtung zur Detektion von Urin in Behältern
US5703479A (en) * 1994-12-02 1997-12-30 Motorola, Inc. Method and apparatus for fault isolation by a communication system tester
FR2743231B1 (fr) * 1995-12-29 1998-01-30 Thomson Multimedia Sa Procede et dispositif de diversite de frequence d'une porteuse shf
DE19837426C2 (de) * 1998-08-18 2001-12-06 Fraunhofer Ges Forschung Verfahren und Vorrichtung zum Senden von Informationssymbolen mittels einer Mehrzahl von Trägern und Verfahren und Vorrichtung zum Empfangen von Informationssymbolen
US6434189B1 (en) * 1999-06-17 2002-08-13 Stmicroelectronics, Inc. Communications system and method for reducing the effects of transmitter non-linear distortion on a received signal
JP4161487B2 (ja) * 1999-11-01 2008-10-08 ソニー株式会社 データ復号装置及び方法
GB2398964B (en) * 2003-02-27 2005-08-17 Toshiba Res Europ Ltd Signal processing apparatus and methods
US7324608B1 (en) * 2003-03-14 2008-01-29 Ralink Technology, Inc. Efficient subcarrier weighting to enhance receiver performance
US7695461B2 (en) * 2004-09-16 2010-04-13 Mcneil-Ppc, Inc. Drapeable sanitary absorbent napkin

Family Cites Families (15)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR1116297A (fr) * 1954-12-13 1956-05-07 Acec Téléimprimeur à liaison radioélectrique
US3288940A (en) * 1963-10-24 1966-11-29 Automatic Elect Lab Multifrequency signal receiver
GB1027108A (en) * 1964-02-10 1966-04-20 Ass Elect Ind Improvements relating to data transmission systems
US3499108A (en) * 1965-08-25 1970-03-03 Us Navy Communication system
NL145117B (nl) * 1966-02-26 1975-02-17 Philips Nv Foutencorrigerend informatietransmissiesysteem.
GB1143202A (en) * 1966-06-22 1969-02-19 British Telecomm Res Ltd Improvements in electrical signalling systems using a common transmission path
GB1155633A (en) * 1967-07-28 1969-06-18 Marconi Co Ltd Improvements in or relating to Compressed Pulse Communication Systems
BE793727A (fr) * 1972-01-07 1973-07-05 Philips Nv Systeem voor de overdracht van datasignalen met behulp van lineaire frequentiemodulatie
US3810019A (en) * 1972-09-25 1974-05-07 Sperry Rand Corp Multifrequency communication system for fading channels
US3895223A (en) * 1973-01-03 1975-07-15 Westinghouse Electric Corp Circuit arrangement for enhancing the reliability of common bus outputs of plural redundant systems
US3988679A (en) * 1973-05-04 1976-10-26 General Electric Company Wideband receiving system including multi-channel filter for eliminating narrowband interference
US3909527A (en) * 1973-09-18 1975-09-30 Mitsubishi Electric Corp Frequency shift keying system and method
SE377643B (da) * 1973-11-09 1975-07-14 Philips Svenska Ab
FR2409652A1 (fr) * 1977-11-18 1979-06-15 Materiel Telephonique Recepteur de signaux numeriques multifrequences codes
US4306308A (en) * 1979-09-14 1981-12-15 Rca Corporation Symbols communication system

Also Published As

Publication number Publication date
JPH06318879A (ja) 1994-11-15
JPS58500099A (ja) 1983-01-13
WO1982002633A1 (en) 1982-08-05
DE3264346D1 (en) 1985-08-01
JPH0756945B2 (ja) 1995-06-14
US4606047A (en) 1986-08-12
JPH0642658B2 (ja) 1994-06-01
EP0070287A1 (en) 1983-01-26
DK159233C (da) 1991-03-04
EP0070287B1 (en) 1985-06-26
DK159233B (da) 1990-09-17

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PUP Patent expired