ATE108964T1 - Verfahren zur ableitung einer genauen frequenzreferenz für den burstdemodulator einer satellitenübertragungsanlage. - Google Patents

Verfahren zur ableitung einer genauen frequenzreferenz für den burstdemodulator einer satellitenübertragungsanlage.

Info

Publication number
ATE108964T1
ATE108964T1 AT89910573T AT89910573T ATE108964T1 AT E108964 T1 ATE108964 T1 AT E108964T1 AT 89910573 T AT89910573 T AT 89910573T AT 89910573 T AT89910573 T AT 89910573T AT E108964 T1 ATE108964 T1 AT E108964T1
Authority
AT
Austria
Prior art keywords
carrier
outlink
channel
burst
high precision
Prior art date
Application number
AT89910573T
Other languages
English (en)
Inventor
Charles W Richards Iv
Charles R Burr
George W Waters
Original Assignee
Scientific Atlanta
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 Scientific Atlanta filed Critical Scientific Atlanta
Application granted granted Critical
Publication of ATE108964T1 publication Critical patent/ATE108964T1/de

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L27/00—Modulated-carrier systems
    • H04L27/18—Phase-modulated carrier systems, i.e. using phase-shift keying
    • H04L27/22—Demodulator circuits; Receiver circuits
    • H04L27/227—Demodulator circuits; Receiver circuits using coherent demodulation
    • H04L27/2271—Demodulator circuits; Receiver circuits using coherent demodulation wherein the carrier recovery circuit uses only the demodulated signals

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Radio Relay Systems (AREA)
AT89910573T 1988-08-22 1989-08-22 Verfahren zur ableitung einer genauen frequenzreferenz für den burstdemodulator einer satellitenübertragungsanlage. ATE108964T1 (de)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US07/234,937 US4932070A (en) 1988-08-22 1988-08-22 Mechanism for deriving accurate frequency reference for satellite communications burst demodulator

Publications (1)

Publication Number Publication Date
ATE108964T1 true ATE108964T1 (de) 1994-08-15

Family

ID=22883401

Family Applications (1)

Application Number Title Priority Date Filing Date
AT89910573T ATE108964T1 (de) 1988-08-22 1989-08-22 Verfahren zur ableitung einer genauen frequenzreferenz für den burstdemodulator einer satellitenübertragungsanlage.

Country Status (7)

Country Link
US (1) US4932070A (de)
EP (1) EP0383908B1 (de)
JP (1) JPH03501677A (de)
AT (1) ATE108964T1 (de)
CA (1) CA1310371C (de)
DE (1) DE68916935T2 (de)
WO (1) WO1990002452A1 (de)

Families Citing this family (18)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2599613B2 (ja) * 1988-03-24 1997-04-09 東北電力 株式会社 人工衛星を利用した送電線故障点標定システム
US5357380A (en) * 1993-06-14 1994-10-18 International Business Machines Corporation Method and apparatus for indicating when each track is in burst in a multitrack tape device
US5697082A (en) * 1993-10-01 1997-12-09 Greer; Steven Craig Self-calibrating frequency standard system
US5715235A (en) * 1993-11-26 1998-02-03 Ntt Mobile Communications Network Inc. Communication system capable of performing FDMA transmission
US5454009A (en) * 1994-01-13 1995-09-26 Scientific-Atlanta, Inc. Method and apparatus for providing energy dispersal using frequency diversity in a satellite communications system
US5506781A (en) * 1994-06-03 1996-04-09 Itt Corporation RF link control of satellite clocks
US5790601A (en) * 1995-02-21 1998-08-04 Hughes Electronics Low cost very small aperture satellite terminal
US5774788A (en) * 1995-03-17 1998-06-30 Hughes Electronics Remote ground terminal having an outdoor unit with a frequency-multiplier
JP2929965B2 (ja) * 1995-03-31 1999-08-03 日本電気株式会社 無線通信端局
US5794119A (en) * 1995-11-21 1998-08-11 Stanford Telecommunications, Inc. Subscriber frequency control system and method in point-to-multipoint RF communication system
US5923648A (en) * 1996-09-30 1999-07-13 Amsc Subsidiary Corporation Methods of dynamically switching return channel transmissions of time-division multiple-access (TDMA) communication systems between signalling burst transmissions and message transmissions
US6041088A (en) * 1996-10-23 2000-03-21 Sicom, Inc. Rapid synchronization for communication systems
US5844939A (en) * 1997-02-14 1998-12-01 Hewlett-Packard Company Low-cost phaselocked local oscillator for millimeter wave transceivers
IL135783A0 (en) * 1997-10-20 2001-05-20 Comsat Corp A method for uplink power control for distributed satellite networks to compensate for rain fade
US6618435B1 (en) 1997-10-20 2003-09-09 Comsat Corporation Method for measurement and reduction of frequency offsets in distributed satellite/wireless networks and corresponding communications system
US6684059B1 (en) * 1999-08-27 2004-01-27 Tachyon, Inc. Frequency generation in a wireless communication system
US20020098799A1 (en) * 2001-01-19 2002-07-25 Struhsaker Paul F. Apparatus and method for operating a subscriber interface in a fixed wireless system
WO2009155002A2 (en) * 2008-05-27 2009-12-23 Viasat, Inc. Time of day encryption using tdma timing

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2524228A1 (fr) * 1982-03-26 1983-09-30 Thomson Csf Systeme de telecommunications par satellite
GB2135844B (en) * 1983-02-21 1986-08-28 Nippon Telegraph & Telephone Oscillator with variable frequency and phase
JPS61120538A (ja) * 1984-11-15 1986-06-07 Nec Corp 多方向多重通信装置
JPS6248819A (ja) * 1985-08-28 1987-03-03 Kokusai Denshin Denwa Co Ltd <Kdd> 衛星通信方式

Also Published As

Publication number Publication date
CA1310371C (en) 1992-11-17
JPH03501677A (ja) 1991-04-11
EP0383908B1 (de) 1994-07-20
US4932070A (en) 1990-06-05
EP0383908A1 (de) 1990-08-29
WO1990002452A1 (en) 1990-03-08
DE68916935D1 (de) 1994-08-25
EP0383908A4 (en) 1991-10-30
DE68916935T2 (de) 1995-01-19

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Legal Events

Date Code Title Description
UEP Publication of translation of european patent specification
REN Ceased due to non-payment of the annual fee