AU581038B2 - Radiocommunication system - Google Patents

Radiocommunication system

Info

Publication number
AU581038B2
AU581038B2 AU50339/85A AU5033985A AU581038B2 AU 581038 B2 AU581038 B2 AU 581038B2 AU 50339/85 A AU50339/85 A AU 50339/85A AU 5033985 A AU5033985 A AU 5033985A AU 581038 B2 AU581038 B2 AU 581038B2
Authority
AU
Australia
Prior art keywords
radiocommunication system
radiocommunication
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
AU50339/85A
Other versions
AU5033985A (en
Inventor
Daniel Simon Gregoire Hoefkens
Joannes Hendrik Palmyre Maria Spaenjers
Eric Jozef Julien Maria Vos
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.)
Alcatel Lucent NV
Original Assignee
Alcatel NV
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 Alcatel NV filed Critical Alcatel NV
Publication of AU5033985A publication Critical patent/AU5033985A/en
Application granted granted Critical
Publication of AU581038B2 publication Critical patent/AU581038B2/en
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
    • H04L27/18—Phase-modulated carrier systems, i.e. using phase-shift keying
    • H04L27/20—Modulator circuits; Transmitter circuits
    • H04L27/2003—Modulator circuits; Transmitter circuits for continuous phase modulation
    • H04L27/2007—Modulator circuits; Transmitter circuits for continuous phase modulation in which the phase change within each symbol period is constrained
    • H04L27/2014—Modulator circuits; Transmitter circuits for continuous phase modulation in which the phase change within each symbol period is constrained in which the phase changes in a piecewise linear manner during each symbol period, e.g. minimum shift keying, fast frequency shift keying
    • 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
    • H04L27/233—Demodulator circuits; Receiver circuits using non-coherent demodulation
    • H04L27/2335—Demodulator circuits; Receiver circuits using non-coherent demodulation using temporal properties of the received signal
    • H04L27/2337—Demodulator circuits; Receiver circuits using non-coherent demodulation using temporal properties of the received signal using digital techniques to measure the time between zero-crossings

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Mobile Radio Communication Systems (AREA)
AU50339/85A 1984-12-07 1985-11-25 Radiocommunication system Ceased AU581038B2 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
BE901232 1984-12-07
BE2/60561A BE901232A (en) 1984-12-07 1984-12-07 RADIOCOMMUNICATION SYSTEM.

Related Child Applications (1)

Application Number Title Priority Date Filing Date
AU24159/88A Division AU2415988A (en) 1984-12-07 1988-10-24 An fsk modulator

Publications (2)

Publication Number Publication Date
AU5033985A AU5033985A (en) 1986-06-12
AU581038B2 true AU581038B2 (en) 1989-02-09

Family

ID=3865721

Family Applications (2)

Application Number Title Priority Date Filing Date
AU50339/85A Ceased AU581038B2 (en) 1984-12-07 1985-11-25 Radiocommunication system
AU24159/88A Withdrawn AU2415988A (en) 1984-12-07 1988-10-24 An fsk modulator

Family Applications After (1)

Application Number Title Priority Date Filing Date
AU24159/88A Withdrawn AU2415988A (en) 1984-12-07 1988-10-24 An fsk modulator

Country Status (4)

Country Link
AU (2) AU581038B2 (en)
BE (1) BE901232A (en)
GB (1) GB2168878B (en)
NZ (1) NZ214299A (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
NZ243007A (en) * 1991-06-19 1995-02-24 Ericsson Telefon Ab L M Radio telephony: digital speech codec provided at regional stations for analog transmissions

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4412339A (en) * 1981-09-24 1983-10-25 Advanced Micro Devices, Inc. Zero-crossing interpolator to reduce isochronous distortion in a digital FSK modem
US4570126A (en) * 1982-06-23 1986-02-11 U.S. Philips Corporation FM Demodulator using interpolation to approximate zero crossings
US4696018A (en) * 1983-12-24 1987-09-22 Itt Industries, Inc. Digital FM detector for digitized FM signals

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4412339A (en) * 1981-09-24 1983-10-25 Advanced Micro Devices, Inc. Zero-crossing interpolator to reduce isochronous distortion in a digital FSK modem
US4570126A (en) * 1982-06-23 1986-02-11 U.S. Philips Corporation FM Demodulator using interpolation to approximate zero crossings
US4696018A (en) * 1983-12-24 1987-09-22 Itt Industries, Inc. Digital FM detector for digitized FM signals

Also Published As

Publication number Publication date
GB2168878B (en) 1989-02-01
GB8528828D0 (en) 1985-12-24
BE901232A (en) 1985-06-07
NZ214299A (en) 1988-09-29
AU5033985A (en) 1986-06-12
GB2168878A (en) 1986-06-25
AU2415988A (en) 1989-01-27

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