NO934273L - System for detektering og korrigering av radiofrekvensfeil - Google Patents

System for detektering og korrigering av radiofrekvensfeil

Info

Publication number
NO934273L
NO934273L NO934273A NO934273A NO934273L NO 934273 L NO934273 L NO 934273L NO 934273 A NO934273 A NO 934273A NO 934273 A NO934273 A NO 934273A NO 934273 L NO934273 L NO 934273L
Authority
NO
Norway
Prior art keywords
frequency
received
transmitter
receiver
radio frequency
Prior art date
Application number
NO934273A
Other languages
English (en)
Other versions
NO934273D0 (no
Inventor
Alfred B Wieczorek
Charles N Lynk Jr
Walter J Rozanski Jr
Kenneth J Zdunek
Terry K Mansfield
Original Assignee
Motorola Inc
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 Motorola Inc filed Critical Motorola Inc
Publication of NO934273L publication Critical patent/NO934273L/no
Publication of NO934273D0 publication Critical patent/NO934273D0/no

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B1/00—Details of transmission systems, not covered by a single one of groups H04B3/00 - H04B13/00; Details of transmission systems not characterised by the medium used for transmission
    • H04B1/38—Transceivers, i.e. devices in which transmitter and receiver form a structural unit and in which at least one part is used for functions of transmitting and receiving
    • H04B1/40—Circuits
    • H04B1/403—Circuits using the same oscillator for generating both the transmitter frequency and the receiver local oscillator frequency
    • H04B1/405—Circuits using the same oscillator for generating both the transmitter frequency and the receiver local oscillator frequency with multiple discrete channels
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B7/00—Radio transmission systems, i.e. using radiation field
    • H04B7/005—Control of transmission; Equalising

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Mobile Radio Communication Systems (AREA)
  • Radio Relay Systems (AREA)
  • Transmitters (AREA)

Abstract

Et radio kommunikasjonssystem som omfatter en kontroll-stasjon og minst en fjerntliggende stasjon (20). Kontroll-stasjonen har en mottaker for mottak av radio- signaler, og en sender for sending av radio-signaler samt en demodulator for å måle frekvensen av mottatte signaler. Som en reaksjon på en forespørsel om frekvens- måling mottatt fra mottakeren har også kontroll-stasjonen en feilsignalkoder for å gi et tilbakemeldt feil-signal omfattende antall og størrelse for frekvens-differansen for overføring ved senderen. Minst en fjerntliggende stasjon (20) har en mottaker (25), en sender (26), en frekvenskontroller (46) og en koder for koding av forespørselen om frekvens-måling og for å aktivere senderen (26) til å overføre forespørselen, og en dekoder (34), som reagerer på mottatt, tilbakemeldt feil-signal for justering av frekvens-styringen.
NO934273A 1991-05-28 1993-11-25 System for detektering og korrigering av radiofrekvensfeil NO934273D0 (no)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US07/705,875 US5249305A (en) 1989-09-27 1991-05-28 Radio frequency error detection and correction system
PCT/US1992/000748 WO1992022142A1 (en) 1991-05-28 1992-01-30 Radio frequency error detection and correction system

Publications (2)

Publication Number Publication Date
NO934273L true NO934273L (no) 1993-11-25
NO934273D0 NO934273D0 (no) 1993-11-25

Family

ID=24835318

Family Applications (1)

Application Number Title Priority Date Filing Date
NO934273A NO934273D0 (no) 1991-05-28 1993-11-25 System for detektering og korrigering av radiofrekvensfeil

Country Status (8)

Country Link
US (1) US5249305A (no)
EP (1) EP0586548B1 (no)
JP (1) JPH06507531A (no)
CA (1) CA2107767C (no)
DE (1) DE69218934T2 (no)
FI (1) FI935258A0 (no)
NO (1) NO934273D0 (no)
WO (1) WO1992022142A1 (no)

Families Citing this family (23)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5450617A (en) * 1993-05-25 1995-09-12 Motorola, Inc. Method and apparatus for closed loop frequency control in a two-way communication system
SG44039A1 (en) * 1993-11-22 1997-11-14 Philips Electronics Nv A telecommunication system and a first station a second station and a transceiver for use in such a system
US6334219B1 (en) 1994-09-26 2001-12-25 Adc Telecommunications Inc. Channel selection for a hybrid fiber coax network
US7280564B1 (en) 1995-02-06 2007-10-09 Adc Telecommunications, Inc. Synchronization techniques in multipoint-to-point communication using orthgonal frequency division multiplexing
USRE42236E1 (en) 1995-02-06 2011-03-22 Adc Telecommunications, Inc. Multiuse subcarriers in multipoint-to-point communication using orthogonal frequency division multiplexing
FI97582C (fi) * 1995-03-03 1997-01-10 Nokia Telecommunications Oy Matkaviestimen lähetyksen tahdistaminen
US5794119A (en) * 1995-11-21 1998-08-11 Stanford Telecommunications, Inc. Subscriber frequency control system and method in point-to-multipoint RF communication system
US5889816A (en) * 1996-02-02 1999-03-30 Lucent Technologies, Inc. Wireless adapter architecture for mobile computing
US5805984A (en) * 1996-03-05 1998-09-08 Motorola, Inc. Method and apparatus for eliminating frequency mismatch between a transmitter and a receiver
US5819177A (en) * 1996-03-20 1998-10-06 Dynamic Telecommunications, Inc. Fixed wireless terminals with network management method and apparatus
US6041088A (en) * 1996-10-23 2000-03-21 Sicom, Inc. Rapid synchronization for communication systems
DE19737758A1 (de) * 1997-08-29 1999-03-04 Bosch Gmbh Robert Verfahren zum Einstellen der Sendeträgerfrequenz in einer Teilnehmerstation eines Punkt-zu-Mehrpunkt Funkübertragungssystem
US6240276B1 (en) * 1998-04-28 2001-05-29 Ericsson Inc. Compensating for errors in tuning frequency of a global positioning satellite (GPS) receiver
US6650874B1 (en) * 1999-11-23 2003-11-18 Agere Systems, Inc. Real-time slow drift correction of alignment of handset's local oscillator for cordless telephone
JP2002077288A (ja) * 2000-06-20 2002-03-15 Comspace Corp 閉ループ周波数制御
US7024187B2 (en) * 2000-12-08 2006-04-04 Samsung Electronics Co., Ltd. System and method for performing diagnostics on a mobile station using over-the-air transfer of interpreted byte-code program
US7228118B2 (en) * 2002-06-27 2007-06-05 Agere Systems Inc. Method of calibrating PLL frequency synthesizers to precise frequencies with low tolerance crystals in their master reference oscillators
US20040106381A1 (en) * 2002-09-06 2004-06-03 Engim Incorporated Transmit signal cancellation in wireless receivers
US7209716B2 (en) 2003-02-27 2007-04-24 Ntt Docomo, Inc. Radio communication system, radio station, and radio communication method
US8312496B2 (en) * 2008-04-28 2012-11-13 Acterna Llc Measuring the frequency response of a CATV network
CN103248439B (zh) * 2013-04-08 2015-01-28 贵州航天天马机电科技有限公司 一种无线通信设备故障检测系统及其方法
CN103731162B (zh) * 2013-12-20 2015-08-12 天津光电通信技术有限公司 一种基于arm实现数字下变频的宽频扫描系统
CN104202100A (zh) * 2014-09-04 2014-12-10 安徽白鹭电子科技有限公司 频谱仪的瞬态检波方法

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4401860A (en) * 1982-01-29 1983-08-30 Bell Telephone Laboratories, Incorporated Frequency signaling method and apparatus with dynamic compensation for frequency errors
GB8323966D0 (en) * 1983-09-07 1983-10-12 British Telecomm Frequency control for point-to-multipoint radio
JPH0744485B2 (ja) * 1987-05-22 1995-05-15 三菱電機株式会社 自動車電話装置
JPH0290321A (ja) * 1988-09-28 1990-03-29 Hitachi Ltd カタログ実行制御方式
WO1991005410A1 (en) * 1989-09-27 1991-04-18 Motorola, Inc. Method and apparatus for adjusting the frequency of a two-way radio

Also Published As

Publication number Publication date
DE69218934D1 (de) 1997-05-15
EP0586548B1 (en) 1997-04-09
JPH06507531A (ja) 1994-08-25
CA2107767C (en) 1997-01-28
FI935258A (fi) 1993-11-26
DE69218934T2 (de) 1997-10-16
CA2107767A1 (en) 1992-11-29
EP0586548A1 (en) 1994-03-16
US5249305A (en) 1993-09-28
EP0586548A4 (en) 1994-03-21
WO1992022142A1 (en) 1992-12-10
NO934273D0 (no) 1993-11-25
FI935258A0 (fi) 1993-11-26

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