CA1202085A - Appareil de decalage aleatoire des frequences pour systeme de transmission simultanee utilisant plusieurs emetteurs - Google Patents

Appareil de decalage aleatoire des frequences pour systeme de transmission simultanee utilisant plusieurs emetteurs

Info

Publication number
CA1202085A
CA1202085A CA000414363A CA414363A CA1202085A CA 1202085 A CA1202085 A CA 1202085A CA 000414363 A CA000414363 A CA 000414363A CA 414363 A CA414363 A CA 414363A CA 1202085 A CA1202085 A CA 1202085A
Authority
CA
Canada
Prior art keywords
signal
noise signal
frequency
communications system
noise
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.)
Expired
Application number
CA000414363A
Other languages
English (en)
Inventor
Stuart W. Thro
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.)
Motorola Solutions Inc
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
Application granted granted Critical
Publication of CA1202085A publication Critical patent/CA1202085A/fr
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04H—BROADCAST COMMUNICATION
    • H04H20/00—Arrangements for broadcast or for distribution combined with broadcast
    • H04H20/65—Arrangements characterised by transmission systems for broadcast
    • H04H20/76—Wired systems
    • H04H20/77—Wired systems using carrier waves
    • H04H20/80—Wired systems using carrier waves having frequencies in two or more frequency bands, e.g. medium wave and VHF
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04H—BROADCAST COMMUNICATION
    • H04H20/00—Arrangements for broadcast or for distribution combined with broadcast
    • H04H20/65—Arrangements characterised by transmission systems for broadcast
    • H04H20/67—Common-wave systems, i.e. using separate transmitters operating on substantially the same frequency
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B7/00—Radio transmission systems, i.e. using radiation field
    • H04B7/02—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas
    • H04B7/04—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas
    • H04B7/06—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas at the transmitting station
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B7/00—Radio transmission systems, i.e. using radiation field
    • H04B7/24—Radio transmission systems, i.e. using radiation field for communication between two or more posts
    • H04B7/26—Radio transmission systems, i.e. using radiation field for communication between two or more posts at least one of which is mobile
    • H04B7/2625—Radio transmission systems, i.e. using radiation field for communication between two or more posts at least one of which is mobile using common wave

Landscapes

  • Engineering & Computer Science (AREA)
  • Signal Processing (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Transmitters (AREA)
  • Noise Elimination (AREA)
CA000414363A 1981-11-23 1982-10-28 Appareil de decalage aleatoire des frequences pour systeme de transmission simultanee utilisant plusieurs emetteurs Expired CA1202085A (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US32417281A 1981-11-23 1981-11-23
US324,172 1981-11-23

Publications (1)

Publication Number Publication Date
CA1202085A true CA1202085A (fr) 1986-03-18

Family

ID=23262416

Family Applications (1)

Application Number Title Priority Date Filing Date
CA000414363A Expired CA1202085A (fr) 1981-11-23 1982-10-28 Appareil de decalage aleatoire des frequences pour systeme de transmission simultanee utilisant plusieurs emetteurs

Country Status (7)

Country Link
EP (1) EP0094417A1 (fr)
KR (1) KR840002782A (fr)
AR (1) AR229626A1 (fr)
CA (1) CA1202085A (fr)
IL (1) IL67120A (fr)
MX (1) MX152176A (fr)
WO (1) WO1983001878A1 (fr)

Families Citing this family (8)

* 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
JP2810569B2 (ja) * 1991-09-30 1998-10-15 富士通株式会社 ページング方式
JP2674404B2 (ja) * 1991-12-13 1997-11-12 日本電気株式会社 基地局カバレッジエリア制御方式
GB9219466D0 (en) * 1992-09-15 1992-10-28 British Broadcasting Corp Radio transmission systems
DE4237677C1 (de) * 1992-11-07 1993-11-18 Ant Nachrichtentech Verfahren zur Übertragung von Informationen an Verkehrsteilnehmer
GB2282298B (en) * 1993-08-27 1997-08-13 Motorola Gmbh A cell enhancer for simulcast radio transmission
WO1995010924A1 (fr) * 1993-10-12 1995-04-20 Ntt Mobile Communications Network Inc. Procede de transmission multistation et recepteur utilise a cet effet
WO2000007305A1 (fr) * 1998-07-31 2000-02-10 Ericsson Inc. Systeme a combinaison en espace libre et a antenne en diversite pour stations cellulaires fixes

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3475558A (en) * 1964-09-01 1969-10-28 Magnavox Co Time gated pseudonoise multiplexing system
US3597689A (en) * 1966-11-14 1971-08-03 Boeing Co Communication system
US4231113A (en) * 1968-03-11 1980-10-28 International Business Machines Corporation Anti-jam communications system
US3710313A (en) * 1971-01-13 1973-01-09 P Kimball Emergency warning systems

Also Published As

Publication number Publication date
KR840002782A (ko) 1984-07-16
EP0094417A1 (fr) 1983-11-23
MX152176A (es) 1985-06-05
IL67120A (en) 1987-08-31
AR229626A1 (es) 1983-09-30
IL67120A0 (en) 1983-02-23
WO1983001878A1 (fr) 1983-05-26

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Legal Events

Date Code Title Description
MKEX Expiry
MKEX Expiry

Effective date: 20030318