DE60128747D1 - Koheränte Synchronisation von Kodevielfachzugriffssignalen - Google Patents

Koheränte Synchronisation von Kodevielfachzugriffssignalen

Info

Publication number
DE60128747D1
DE60128747D1 DE60128747T DE60128747T DE60128747D1 DE 60128747 D1 DE60128747 D1 DE 60128747D1 DE 60128747 T DE60128747 T DE 60128747T DE 60128747 T DE60128747 T DE 60128747T DE 60128747 D1 DE60128747 D1 DE 60128747D1
Authority
DE
Germany
Prior art keywords
multiple access
division multiple
code division
access signals
coherent synchronization
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.)
Expired - Lifetime
Application number
DE60128747T
Other languages
English (en)
Other versions
DE60128747T2 (de
Inventor
Donald C D Chang
Kar W Yung
David C Cheng
Frank A Hagen
Ming U Chang
John I Novak Iii
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.)
DirecTV Group Inc
Original Assignee
Hughes Electronics 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 Hughes Electronics Corp filed Critical Hughes Electronics Corp
Application granted granted Critical
Publication of DE60128747D1 publication Critical patent/DE60128747D1/de
Publication of DE60128747T2 publication Critical patent/DE60128747T2/de
Anticipated expiration legal-status Critical
Expired - Lifetime 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
    • H04B7/185—Space-based or airborne stations; Stations for satellite systems
    • H04B7/1853—Satellite systems for providing telephony service to a mobile station, i.e. mobile satellite service
    • H04B7/18532—Arrangements for managing transmission, i.e. for transporting data or a signalling message
    • H04B7/18534—Arrangements for managing transmission, i.e. for transporting data or a signalling message for enhancing link reliablility, e.g. satellites diversity
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B1/00—Details of transmission systems, not covered by a single one of groups H04B3/00 - H04B13/00; Details of transmission systems not characterised by the medium used for transmission
    • H04B1/69—Spread spectrum techniques
    • H04B1/707—Spread spectrum techniques using direct sequence modulation
    • H04B1/7097—Interference-related aspects
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B2201/00—Indexing scheme relating to details of transmission systems not covered by a single group of H04B3/00 - H04B13/00
    • H04B2201/69—Orthogonal indexing scheme relating to spread spectrum techniques in general
    • H04B2201/707—Orthogonal indexing scheme relating to spread spectrum techniques in general relating to direct sequence modulation
    • H04B2201/7097—Direct sequence modulation interference
    • H04B2201/709709—Methods of preventing interference

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Physics & Mathematics (AREA)
  • Astronomy & Astrophysics (AREA)
  • Aviation & Aerospace Engineering (AREA)
  • General Physics & Mathematics (AREA)
  • Radio Relay Systems (AREA)
  • Synchronisation In Digital Transmission Systems (AREA)
DE60128747T 2000-04-17 2001-04-12 Kohärente Synchronisation von Kodevielfachzugriffssignalen Expired - Lifetime DE60128747T2 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US09/550,505 US6963548B1 (en) 2000-04-17 2000-04-17 Coherent synchronization of code division multiple access signals
US550505 2000-04-17

Publications (2)

Publication Number Publication Date
DE60128747D1 true DE60128747D1 (de) 2007-07-19
DE60128747T2 DE60128747T2 (de) 2008-01-31

Family

ID=24197440

Family Applications (1)

Application Number Title Priority Date Filing Date
DE60128747T Expired - Lifetime DE60128747T2 (de) 2000-04-17 2001-04-12 Kohärente Synchronisation von Kodevielfachzugriffssignalen

Country Status (3)

Country Link
US (1) US6963548B1 (de)
EP (1) EP1148662B1 (de)
DE (1) DE60128747T2 (de)

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US7317916B1 (en) 2000-09-14 2008-01-08 The Directv Group, Inc. Stratospheric-based communication system for mobile users using additional phased array elements for interference rejection
US7809403B2 (en) 2001-01-19 2010-10-05 The Directv Group, Inc. Stratospheric platforms communication system using adaptive antennas
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US20050288012A1 (en) * 2004-06-23 2005-12-29 William Morgan Timing compensation method and means for a terrestrial wireless communication system having satelite backhaul link
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Also Published As

Publication number Publication date
EP1148662A2 (de) 2001-10-24
DE60128747T2 (de) 2008-01-31
US6963548B1 (en) 2005-11-08
EP1148662A3 (de) 2002-04-17
EP1148662B1 (de) 2007-06-06

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