BE901232A - RADIOCOMMUNICATION SYSTEM. - Google Patents

RADIOCOMMUNICATION SYSTEM.

Info

Publication number
BE901232A
BE901232A BE2/60561A BE2060561A BE901232A BE 901232 A BE901232 A BE 901232A BE 2/60561 A BE2/60561 A BE 2/60561A BE 2060561 A BE2060561 A BE 2060561A BE 901232 A BE901232 A BE 901232A
Authority
BE
Belgium
Prior art keywords
binary data
data signals
base stations
radiocommunication system
mobile stations
Prior art date
Application number
BE2/60561A
Other languages
French (fr)
Original Assignee
Itt Ind Belgium
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 Itt Ind Belgium filed Critical Itt Ind Belgium
Priority to BE2/60561A priority Critical patent/BE901232A/en
Publication of BE901232A publication Critical patent/BE901232A/en
Priority to NZ21429985A priority patent/NZ214299A/en
Priority to GB08528828A priority patent/GB2168878B/en
Priority to AU50339/85A priority patent/AU581038B2/en
Priority to AU24159/88A priority patent/AU2415988A/en

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

Abstract

Un système de radiocommunication pouvant transmettre des signaux de parole et de données binaires entre des stations mobiles et un central de télécommunication via une ou plusieurs stations de base. Les signaux de données binaires sont transmis comme signaux à commutation-à-glissement-de-fréquence (FSK) sous forme analogique et modulée entre les stations mobiles et les stations de base, et sous forme d'échantillonnée entre ces dernières et le central. Ce système est également muni d'un dispositif de sur-échantillonnage qui permet de réduire considérablement les erreurs de transmission des signaux de données binaires.A radiocommunication system capable of transmitting speech and binary data signals between mobile stations and a telecommunications center via one or more base stations. Binary data signals are transmitted as frequency slip-switching (FSK) signals in analog and modulated form between mobile stations and base stations, and in sampled form between them and the central office. This system is also provided with an oversampling device which considerably reduces transmission errors of binary data signals.

BE2/60561A 1984-12-07 1984-12-07 RADIOCOMMUNICATION SYSTEM. BE901232A (en)

Priority Applications (5)

Application Number Priority Date Filing Date Title
BE2/60561A BE901232A (en) 1984-12-07 1984-12-07 RADIOCOMMUNICATION SYSTEM.
NZ21429985A NZ214299A (en) 1984-12-07 1985-11-22 Cellular radio exchange link: recovering binary fsk at exchange
GB08528828A GB2168878B (en) 1984-12-07 1985-11-22 Radio communication system
AU50339/85A AU581038B2 (en) 1984-12-07 1985-11-25 Radiocommunication system
AU24159/88A AU2415988A (en) 1984-12-07 1988-10-24 An fsk modulator

Applications Claiming Priority (1)

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

Publications (1)

Publication Number Publication Date
BE901232A true BE901232A (en) 1985-06-07

Family

ID=3865721

Family Applications (1)

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

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

Family Cites Families (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
DE3223345A1 (en) * 1982-06-23 1984-01-05 Philips Patentverwaltung Gmbh, 2000 Hamburg METHOD AND ARRANGEMENT FOR DEMODULATING A FREQUENCY-MODULATED INPUT SIGNAL
DE3373392D1 (en) * 1983-12-24 1987-10-08 Itt Ind Gmbh Deutsche A digital demodulator for digitized frequency-modulated signals

Also Published As

Publication number Publication date
GB8528828D0 (en) 1985-12-24
AU2415988A (en) 1989-01-27
GB2168878B (en) 1989-02-01
AU5033985A (en) 1986-06-12
AU581038B2 (en) 1989-02-09
GB2168878A (en) 1986-06-25
NZ214299A (en) 1988-09-29

Similar Documents

Publication Publication Date Title
CA2071490A1 (en) Satellite based acknowledge-back paging system
RU97122267A (en) METHOD FOR PROCESSING COMMUNICATION SIGNALS IN A SUBSCRIBER ITEM OF A WIRELESS TELECOMMUNICATION SYSTEM
EP0844796A3 (en) Communication method
MY114196A (en) Communication system
EP0700170A3 (en) A method and apparatus for spread spectrum code pulse position modulation
CA2221828A1 (en) Digital communications on overlapping channels
EP1633154A3 (en) Method and apparatus for providing high speed data communication in a cellular environment
EP0475464A3 (en) Block coded modulation system
CA2325401A1 (en) Cellular simultaneous voice and data transmission including digital simultaneous voice and data (dsvd) modem
MY111041A (en) Subscriber unit for wireless digital subscriber communication system.
FI970185A0 (en) Procedure for data communication and radio systems
CA2027364A1 (en) Varying bandwidth digital signal detector
IT8621958A0 (en) PROCEDURE FOR TRANSMITTING TEXT MESSAGES ON A SUB CARRIER ASSOCIATED WITH A RADIO CARRIER FREQUENCY.
EP0863682A4 (en) Mobile communication system
MY124287A (en) Cordless telephone system
ATE95357T1 (en) COMBINED VOICE INTERPOLATION AND ADAPTIVE DIFFERENTIAL PULSE CODE MODULATION SYSTEM.
EP1962440A3 (en) Upgrading of resources in a telecommunications network
WO1990011675A3 (en) Mixed modulation level communication system
BE901232A (en) RADIOCOMMUNICATION SYSTEM.
EP0699010A3 (en) Data communication system using spectral overlay
SE9603131L (en) Digital mobile data communication device
ATE182431T1 (en) WORLDWIDE COMMUNICATION SYSTEM, RECEIVER AND WORKING METHOD THEREOF
WO1999025135A3 (en) Method and device for transmitting data using mobile data transmission devices
EP0866571A4 (en) Radio calling system
US6259731B1 (en) System and method for radio-communication using frequency modulated signals

Legal Events

Date Code Title Description
CH Change of patent owner

Owner name: *BELL TELEPHONE MFG CY N.V.

Effective date: 19841207

RE Patent lapsed

Owner name: ALCATEL BEL

Effective date: 19991231