JPS57152737A - System for satellite data transmission - Google Patents

System for satellite data transmission

Info

Publication number
JPS57152737A
JPS57152737A JP56039195A JP3919581A JPS57152737A JP S57152737 A JPS57152737 A JP S57152737A JP 56039195 A JP56039195 A JP 56039195A JP 3919581 A JP3919581 A JP 3919581A JP S57152737 A JPS57152737 A JP S57152737A
Authority
JP
Japan
Prior art keywords
station
psk modulation
earth
satellite
data packets
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
JP56039195A
Other languages
Japanese (ja)
Other versions
JPS6367779B2 (en
Inventor
Kenichi Tsunoda
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 JP56039195A priority Critical patent/JPS57152737A/en
Publication of JPS57152737A publication Critical patent/JPS57152737A/en
Publication of JPS6367779B2 publication Critical patent/JPS6367779B2/ja
Granted 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
    • H04B7/2043—Mixed mode, TDM and FDM systems

Abstract

PURPOSE:To make the satellite data transmission high-efficiency, by transmitting information from each of plural stations as the PSK modulation signal wave of a different carrier and returning this PSK modulation wave from a specific station to plural stations as a time division PSK modulation wave. CONSTITUTION:An optional earth small station 1-K subjects the carrier of a satellite channel frequency for SCPC, which is assigned to the station 1-K itself, to PSK modulation and transmits data packets to a communication satellite 2. The communication satellite 2 returns data packets transmitted from each earth small station to an earth large station 3 through a down link. In the earth large station 3, data packets transmitted from small stations at random are stored temporarily in a packet storage processing part 33 and are read out successively in the order of arrival and are transmitted to earth small stations through the satellite 2 as data packets of time division PSK modulation waves which do not overlap one another in respect to time.
JP56039195A 1981-03-18 1981-03-18 System for satellite data transmission Granted JPS57152737A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP56039195A JPS57152737A (en) 1981-03-18 1981-03-18 System for satellite data transmission

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP56039195A JPS57152737A (en) 1981-03-18 1981-03-18 System for satellite data transmission

Publications (2)

Publication Number Publication Date
JPS57152737A true JPS57152737A (en) 1982-09-21
JPS6367779B2 JPS6367779B2 (en) 1988-12-27

Family

ID=12546332

Family Applications (1)

Application Number Title Priority Date Filing Date
JP56039195A Granted JPS57152737A (en) 1981-03-18 1981-03-18 System for satellite data transmission

Country Status (1)

Country Link
JP (1) JPS57152737A (en)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS62500834A (en) * 1984-11-13 1987-04-02 ヒユ−ズ・エアクラフト・カンパニ− Satellite communication system for communication between ground terminals and method for providing communication between ground terminals
JPS62194760A (en) * 1986-02-21 1987-08-27 Fuji Xerox Co Ltd Accumulating star type communication network
JPS62194761A (en) * 1986-02-21 1987-08-27 Fuji Xerox Co Ltd Accumulating star type communication network
JPS6380645A (en) * 1986-09-25 1988-04-11 Fuji Xerox Co Ltd Storage type star communication network

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS56164639A (en) * 1980-05-23 1981-12-17 Nippon Telegr & Teleph Corp <Ntt> Satellite communication system
JPS5765044A (en) * 1980-10-08 1982-04-20 Nippon Telegr & Teleph Corp <Ntt> Satellite communication system

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS56164639A (en) * 1980-05-23 1981-12-17 Nippon Telegr & Teleph Corp <Ntt> Satellite communication system
JPS5765044A (en) * 1980-10-08 1982-04-20 Nippon Telegr & Teleph Corp <Ntt> Satellite communication system

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS62500834A (en) * 1984-11-13 1987-04-02 ヒユ−ズ・エアクラフト・カンパニ− Satellite communication system for communication between ground terminals and method for providing communication between ground terminals
JPH0439249B2 (en) * 1984-11-13 1992-06-29
JPS62194760A (en) * 1986-02-21 1987-08-27 Fuji Xerox Co Ltd Accumulating star type communication network
JPS62194761A (en) * 1986-02-21 1987-08-27 Fuji Xerox Co Ltd Accumulating star type communication network
JPS6380645A (en) * 1986-09-25 1988-04-11 Fuji Xerox Co Ltd Storage type star communication network

Also Published As

Publication number Publication date
JPS6367779B2 (en) 1988-12-27

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