IL67120A - Apparatus for randomly offsetting frequencies in a multi-transmitter simulcast radio communications system - Google Patents

Apparatus for randomly offsetting frequencies in a multi-transmitter simulcast radio communications system

Info

Publication number
IL67120A
IL67120A IL67120A IL6712082A IL67120A IL 67120 A IL67120 A IL 67120A IL 67120 A IL67120 A IL 67120A IL 6712082 A IL6712082 A IL 6712082A IL 67120 A IL67120 A IL 67120A
Authority
IL
Israel
Prior art keywords
transmitter
communications system
radio communications
simulcast radio
frequencies
Prior art date
Application number
IL67120A
Other languages
English (en)
Other versions
IL67120A0 (en
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 IL67120A0 publication Critical patent/IL67120A0/xx
Publication of IL67120A publication Critical patent/IL67120A/xx

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)
IL67120A 1981-11-23 1982-10-29 Apparatus for randomly offsetting frequencies in a multi-transmitter simulcast radio communications system IL67120A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US32417281A 1981-11-23 1981-11-23

Publications (2)

Publication Number Publication Date
IL67120A0 IL67120A0 (en) 1983-02-23
IL67120A true IL67120A (en) 1987-08-31

Family

ID=23262416

Family Applications (1)

Application Number Title Priority Date Filing Date
IL67120A IL67120A (en) 1981-11-23 1982-10-29 Apparatus for randomly offsetting frequencies in a multi-transmitter simulcast radio communications system

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
CA1202085A (fr) 1986-03-18
AR229626A1 (es) 1983-09-30
IL67120A0 (en) 1983-02-23
WO1983001878A1 (fr) 1983-05-26

Similar Documents

Publication Publication Date Title
GB8314950D0 (en) Radio frequency communications apparatus
DE3365499D1 (en) Method and apparatus for encrypted radio communications
EP0140351A3 (en) Mobile radio communications system
DE3278848D1 (en) Data muting method and apparatus for radio communications systems
EP0135196A3 (en) Mobile radio communication system
GB2137056B (en) Communications apparatus
GB8320267D0 (en) Radio communications systems
GB2124419B (en) Radio paging apparatus
DE3366347D1 (en) Method and apparatus for synchronizing radio transmitters for synchronous radio transmission
GB8914801D0 (en) Method and apparatus for radio communication
EP0156297A3 (en) Mobile apparatus for radio transmission
DE3478556D1 (en) Receiver unit in radio communication system
DE3379311D1 (en) Radio communication system
EP0308180A3 (en) Radio communication apparatus
IL67120A0 (en) Apparatus for randomly offsetting frequencies in a multi-transmitter simulcast radio communications system
DE3470643D1 (en) Method and apparatus for supervising digital radio transmission line
GB2103040B (en) Receiver apparatus for radio transmission systems
GB2101847B (en) Radio communications apparatus
GB2121650B (en) Apparatus for receiving broadcast waves
GB2150792B (en) Radio transmission system
DE3474894D1 (en) Radio communication system
EP0122127A3 (en) Radio communication system
EP0701336A3 (fr) Système de communication sans fil et station à utiliser dans celui-ci
AU1042282A (en) Random frequency offsetting apparatus for multi-transmitter simulcast radio communications systems
DE3362347D1 (en) Radio system