JPS55133147A - Satellite communication system - Google Patents

Satellite communication system

Info

Publication number
JPS55133147A
JPS55133147A JP3974279A JP3974279A JPS55133147A JP S55133147 A JPS55133147 A JP S55133147A JP 3974279 A JP3974279 A JP 3974279A JP 3974279 A JP3974279 A JP 3974279A JP S55133147 A JPS55133147 A JP S55133147A
Authority
JP
Japan
Prior art keywords
station
line
quality
ref
transmission power
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.)
Pending
Application number
JP3974279A
Other languages
Japanese (ja)
Inventor
Shunichiro Egami
Teruyoshi Okamoto
Toshihiro Yamakoshi
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.)
Nippon Telegraph and Telephone Corp
Original Assignee
Nippon Telegraph and Telephone Corp
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 Nippon Telegraph and Telephone Corp filed Critical Nippon Telegraph and Telephone Corp
Priority to JP3974279A priority Critical patent/JPS55133147A/en
Publication of JPS55133147A publication Critical patent/JPS55133147A/en
Pending legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W52/00—Power management, e.g. TPC [Transmission Power Control], power saving or power classes
    • H04W52/04—TPC

Landscapes

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

Abstract

PURPOSE:To enable to cope with the attenuation of signal due to rain fall, by controlling the transmission power of the station A with the quality of line from the station A to station B and controlling the transmission power of the station B with the line quality from the station B to the station A. CONSTITUTION:The quality of the satellite circuit from the station B to station A is measured at the station A by providing the line S/N measuring channel 25 for the base band signal 23. The line S/N measured at the station A is delivered to the station B by providing the subcarrier 28 in the base band signal 27 of the station A transmission and by modulating it. Taking the line S/N from the station B to the station A as S/N(B A) and the line reference value as S/N(REF), when the transmission power PB of the station B is controlled as equation (1) or (2), S/N (B A) S/N(REF) is made possible. This is the method of control of the transmission of the station B, but this method is applied to all the earth stations commonly accessed and all the line quality reference values S/N(REF) are equal, allowing optimum operation as the whole system.
JP3974279A 1979-04-04 1979-04-04 Satellite communication system Pending JPS55133147A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP3974279A JPS55133147A (en) 1979-04-04 1979-04-04 Satellite communication system

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP3974279A JPS55133147A (en) 1979-04-04 1979-04-04 Satellite communication system

Publications (1)

Publication Number Publication Date
JPS55133147A true JPS55133147A (en) 1980-10-16

Family

ID=12561409

Family Applications (1)

Application Number Title Priority Date Filing Date
JP3974279A Pending JPS55133147A (en) 1979-04-04 1979-04-04 Satellite communication system

Country Status (1)

Country Link
JP (1) JPS55133147A (en)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS57116438A (en) * 1981-01-13 1982-07-20 Nec Corp Radio communication system
JPS58143635A (en) * 1982-02-20 1983-08-26 Nippon Telegr & Teleph Corp <Ntt> Transmission power controlling system of satellite communication
JPS58172256U (en) * 1982-05-12 1983-11-17 ソニー株式会社 data transmission equipment
JPS58200640A (en) * 1982-05-18 1983-11-22 Nec Corp Controlling system of electric power for transmitting satellite communication
WO1997037438A1 (en) * 1996-04-02 1997-10-09 Qualcomm Incorporated Pilot signal strength control for a low earth orbiting satellite communications system

Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS57116438A (en) * 1981-01-13 1982-07-20 Nec Corp Radio communication system
JPS6341455B2 (en) * 1981-01-13 1988-08-17 Nippon Electric Co
JPS58143635A (en) * 1982-02-20 1983-08-26 Nippon Telegr & Teleph Corp <Ntt> Transmission power controlling system of satellite communication
JPS6342447B2 (en) * 1982-02-20 1988-08-23 Nippon Telegraph & Telephone
JPS58172256U (en) * 1982-05-12 1983-11-17 ソニー株式会社 data transmission equipment
JPH0117884Y2 (en) * 1982-05-12 1989-05-24
JPS58200640A (en) * 1982-05-18 1983-11-22 Nec Corp Controlling system of electric power for transmitting satellite communication
WO1997037438A1 (en) * 1996-04-02 1997-10-09 Qualcomm Incorporated Pilot signal strength control for a low earth orbiting satellite communications system
AU713733B2 (en) * 1996-04-02 1999-12-09 Qualcomm Incorporated Pilot signal strength control for a low earth orbiting satellite communications system

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