JPS5227210A - Frequency controller in earth station - Google Patents

Frequency controller in earth station

Info

Publication number
JPS5227210A
JPS5227210A JP50102714A JP10271475A JPS5227210A JP S5227210 A JPS5227210 A JP S5227210A JP 50102714 A JP50102714 A JP 50102714A JP 10271475 A JP10271475 A JP 10271475A JP S5227210 A JPS5227210 A JP S5227210A
Authority
JP
Japan
Prior art keywords
earth station
frequency controller
satallite
fdma
communication system
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.)
Granted
Application number
JP50102714A
Other languages
Japanese (ja)
Other versions
JPS5910097B2 (en
Inventor
Ryuji Kuroda
Tadao Shimamura
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.)
NEC Corp
Original Assignee
NEC Corp
Nippon Electric Co Ltd
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 NEC Corp, Nippon Electric Co Ltd filed Critical NEC Corp
Priority to JP50102714A priority Critical patent/JPS5910097B2/en
Publication of JPS5227210A publication Critical patent/JPS5227210A/en
Publication of JPS5910097B2 publication Critical patent/JPS5910097B2/en
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B7/00—Radio transmission systems, i.e. using radiation field
    • H04B7/14—Relay systems
    • H04B7/15—Active relay systems
    • H04B7/204—Multiple access
    • H04B7/208—Frequency-division multiple access [FDMA]

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Radio Relay Systems (AREA)
  • Channel Selection Circuits, Automatic Tuning Circuits (AREA)
  • Stabilization Of Oscillater, Synchronisation, Frequency Synthesizers (AREA)

Abstract

PURPOSE:To obtain FDMA satallite communication system which remarkably increases utilization factor of transmission frequency bands.
JP50102714A 1975-08-25 1975-08-25 Frequency control device at ground station Expired JPS5910097B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP50102714A JPS5910097B2 (en) 1975-08-25 1975-08-25 Frequency control device at ground station

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP50102714A JPS5910097B2 (en) 1975-08-25 1975-08-25 Frequency control device at ground station

Publications (2)

Publication Number Publication Date
JPS5227210A true JPS5227210A (en) 1977-03-01
JPS5910097B2 JPS5910097B2 (en) 1984-03-07

Family

ID=14334924

Family Applications (1)

Application Number Title Priority Date Filing Date
JP50102714A Expired JPS5910097B2 (en) 1975-08-25 1975-08-25 Frequency control device at ground station

Country Status (1)

Country Link
JP (1) JPS5910097B2 (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5862943A (en) * 1981-10-08 1983-04-14 Nec Corp Satellite communication system
JPH02246563A (en) * 1989-03-20 1990-10-02 Oki Electric Ind Co Ltd Radio communication equipment
JPH0414810B2 (en) * 1984-03-04 1992-03-16 Kokusai Denshin Denwa Co Ltd

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5862943A (en) * 1981-10-08 1983-04-14 Nec Corp Satellite communication system
JPH0414810B2 (en) * 1984-03-04 1992-03-16 Kokusai Denshin Denwa Co Ltd
JPH02246563A (en) * 1989-03-20 1990-10-02 Oki Electric Ind Co Ltd Radio communication equipment

Also Published As

Publication number Publication date
JPS5910097B2 (en) 1984-03-07

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