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WO1996002995A3 - Datenübertragung durch frequenzumtastung - Google Patents

Datenübertragung durch frequenzumtastung Download PDF

Info

Publication number
WO1996002995A3
WO1996002995A3 PCT/DE1995/000842 DE9500842W WO9602995A3 WO 1996002995 A3 WO1996002995 A3 WO 1996002995A3 DE 9500842 W DE9500842 W DE 9500842W WO 9602995 A3 WO9602995 A3 WO 9602995A3
Authority
WO
WIPO (PCT)
Prior art keywords
data
transmission
data transmission
frequency shift
signal
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.)
Ceased
Application number
PCT/DE1995/000842
Other languages
English (en)
French (fr)
Other versions
WO1996002995A2 (de
Inventor
Hilmar Locher
Rudi Schneider
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.)
Siemens AG
Siemens Corp
Original Assignee
Siemens AG
Siemens 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 Siemens AG, Siemens Corp filed Critical Siemens AG
Publication of WO1996002995A2 publication Critical patent/WO1996002995A2/de
Publication of WO1996002995A3 publication Critical patent/WO1996002995A3/de
Anticipated expiration legal-status Critical
Ceased 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
    • H04L27/10—Frequency-modulated carrier systems, i.e. using frequency-shift keying
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B10/00—Transmission systems employing electromagnetic waves other than radio-waves, e.g. infrared, visible or ultraviolet light, or employing corpuscular radiation, e.g. quantum communication
    • H04B10/11—Arrangements specific to free-space transmission, i.e. transmission through air or vacuum
    • H04B10/114—Indoor or close-range type systems
    • H04B10/1149—Arrangements for indoor wireless networking of information

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Computing Systems (AREA)
  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Cable Transmission Systems, Equalization Of Radio And Reduction Of Echo (AREA)
  • Mobile Radio Communication Systems (AREA)
  • Small-Scale Networks (AREA)

Abstract

Die Erfindung betrifft ein Verfahren und eine Anordnung zur Übertragung von Daten zwischen mehreren Teilnehmern (1, 3, 4, 5). Die Daten werden durch Frequenzumtastung zur Erzeugung eines Übertragungssignals (14...19) moduliert, wobei die den einzelnen Werten zugeordneten Trägerfrequenzen ein ganzzahliges Vielfaches der halben Datenrate und die Trägerfrequenzsignale phasenstarr zum Datensignal gekoppelt sind, derart, daß bei jedem Wechsel des Datenwerts die Phase der Trägerfrequenzsignale übereinstimmt. Ein zentraler Teilnehmer (1) sendet auch in den Nachrichtenpausen, in denen keine Daten zu übertragen sind, ein Übertragungssignal (14, 15, 19) mit einer Trägerfrequenz eines Datenwertes, das die weiteren Teilnehmer (3, 4, 5) empfangen, demodulieren und zur Synchronisation verwenden. Die Erfindung hat den Vorteil, daß bei Beginn einer Nachricht kein Datenverlust auftritt und Übertragungsmittel verwendet werden können, deren Grenzfrequenz in der Größenordnung der Datenrate liegt. Die Erfindung wird angewandt in der Datenübertragung allgemein.
PCT/DE1995/000842 1994-07-13 1995-06-29 Datenübertragung durch frequenzumtastung Ceased WO1996002995A2 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DEP4424741.9 1994-07-13
DE19944424741 DE4424741A1 (de) 1994-07-13 1994-07-13 Verfahren und Anordnung zur Übertragung von Daten

Publications (2)

Publication Number Publication Date
WO1996002995A2 WO1996002995A2 (de) 1996-02-01
WO1996002995A3 true WO1996002995A3 (de) 1996-04-25

Family

ID=6523065

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/DE1995/000842 Ceased WO1996002995A2 (de) 1994-07-13 1995-06-29 Datenübertragung durch frequenzumtastung

Country Status (2)

Country Link
DE (1) DE4424741A1 (de)
WO (1) WO1996002995A2 (de)

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0147008A2 (de) * 1983-09-30 1985-07-03 Texas Instruments Incorporated Digitales FSK-Modem
US4700364A (en) * 1984-09-28 1987-10-13 Nec Corporation FSK with continuous phase and continuous slope at bit transitions

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0147008A2 (de) * 1983-09-30 1985-07-03 Texas Instruments Incorporated Digitales FSK-Modem
US4700364A (en) * 1984-09-28 1987-10-13 Nec Corporation FSK with continuous phase and continuous slope at bit transitions

Non-Patent Citations (3)

* Cited by examiner, † Cited by third party
Title
FABBRI & BLAUSCHILD: "Fleetest FSK modem chips can go the distance", ELECTRONIC DESIGN, vol. 31, no. 16, HASBROUCK HEIGHTS, NEW JERSEY US, pages 123 - 130 *
STAUFFER: "Single-chip FSK modem expands your design choices", EDN ELECTRICAL DESIGN NEWS, vol. 27, no. 10, NEWTON, MASSACHUSETTS US, pages 143 - 151 *
VAN TOL & ROS: "VECOM short-range communication with vehicles", PHILIPS TELECOMMUNICATION REVIEW, vol. 41, no. 3, HILVERSUM NL, pages 235 - 249 *

Also Published As

Publication number Publication date
WO1996002995A2 (de) 1996-02-01
DE4424741A1 (de) 1996-01-18

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121 Ep: the epo has been informed by wipo that ep was designated in this application
DFPE Request for preliminary examination filed prior to expiration of 19th month from priority date (pct application filed before 20040101)
122 Ep: pct application non-entry in european phase