WO2004002009A3 - Orthogonal code division multiple access system - Google Patents

Orthogonal code division multiple access system Download PDF

Info

Publication number
WO2004002009A3
WO2004002009A3 PCT/US2003/019463 US0319463W WO2004002009A3 WO 2004002009 A3 WO2004002009 A3 WO 2004002009A3 US 0319463 W US0319463 W US 0319463W WO 2004002009 A3 WO2004002009 A3 WO 2004002009A3
Authority
WO
WIPO (PCT)
Prior art keywords
ocdma
transmission power
return link
terminal
terminals
Prior art date
Application number
PCT/US2003/019463
Other languages
French (fr)
Other versions
WO2004002009A2 (en
Inventor
Leonard N Schiff
Ahmad Jalali
Original Assignee
Qualcomm Inc
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 Qualcomm Inc filed Critical Qualcomm Inc
Priority to MXPA04012325A priority Critical patent/MXPA04012325A/en
Priority to EP03761174A priority patent/EP1516444A2/en
Priority to AU2003243678A priority patent/AU2003243678A1/en
Priority to BRPI0312080-5A priority patent/BR0312080A/en
Publication of WO2004002009A2 publication Critical patent/WO2004002009A2/en
Publication of WO2004002009A3 publication Critical patent/WO2004002009A3/en

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
    • H04B7/216—Code division or spread-spectrum multiple access [CDMA, SSMA]
    • 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
    • H04B7/18539—Arrangements for managing radio, resources, i.e. for establishing or releasing a connection
    • H04B7/18543—Arrangements for managing radio, resources, i.e. for establishing or releasing a connection for adaptation of transmission parameters, e.g. power control
    • 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
    • H04B2201/70702—Intercell-related aspects
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02D—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN INFORMATION AND COMMUNICATION TECHNOLOGIES [ICT], I.E. INFORMATION AND COMMUNICATION TECHNOLOGIES AIMING AT THE REDUCTION OF THEIR OWN ENERGY USE
    • Y02D30/00—Reducing energy consumption in communication networks
    • Y02D30/70—Reducing energy consumption in communication networks in wireless communication networks

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)
  • Mobile Radio Communication Systems (AREA)

Abstract

Orthogonal CDMA (OCDMA) in the return link of a satellite based communications system provides improved bandwidth efficiencies; increased ability to overcome channel degrading phenomenon; reduced transmission power; or various combinations thereof. By achieving code synchronization needed for advantageous use of OCDMA in the return link of a satellite based communication system, a plurality of terminals, each with a unique time slot/code channel assignment, may transmit concurrently, with the same, or lower, aggregate power as would be used by a single terminal using TDMA. Use of OCDMA in the return link allows one or more terminals, each in a common beam and assigned a common time slot, to transmit at a higher transmission power to overcome channel degradation effects. The ability to allow for higher transmission power for a particular terminal can increase the effective data rate for that terminal by enabling the use of a higher order modulation technique.
PCT/US2003/019463 2002-06-24 2003-06-20 Orthogonal code division multiple access system WO2004002009A2 (en)

Priority Applications (4)

Application Number Priority Date Filing Date Title
MXPA04012325A MXPA04012325A (en) 2002-06-24 2003-06-20 Orthogonal code division multiple access system.
EP03761174A EP1516444A2 (en) 2002-06-24 2003-06-20 Orthogonal code division multiple access system
AU2003243678A AU2003243678A1 (en) 2002-06-24 2003-06-20 Orthogonal code division multiple access system
BRPI0312080-5A BR0312080A (en) 2002-06-24 2003-06-20 orthogonal code division multiple access system

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
US39143802P 2002-06-24 2002-06-24
US60/391,438 2002-06-24
US10/428,953 US7633895B2 (en) 2002-06-24 2003-05-01 Orthogonal code division multiple access on return link of satellite links
US10/428,953 2003-05-01

Publications (2)

Publication Number Publication Date
WO2004002009A2 WO2004002009A2 (en) 2003-12-31
WO2004002009A3 true WO2004002009A3 (en) 2004-04-08

Family

ID=30003193

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/US2003/019463 WO2004002009A2 (en) 2002-06-24 2003-06-20 Orthogonal code division multiple access system

Country Status (8)

Country Link
US (1) US7633895B2 (en)
EP (1) EP1516444A2 (en)
CN (1) CN100492938C (en)
AU (1) AU2003243678A1 (en)
BR (1) BR0312080A (en)
CO (1) CO5631489A2 (en)
MX (1) MXPA04012325A (en)
WO (1) WO2004002009A2 (en)

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Also Published As

Publication number Publication date
AU2003243678A8 (en) 2004-01-06
AU2003243678A1 (en) 2004-01-06
CO5631489A2 (en) 2006-04-28
US20040037238A1 (en) 2004-02-26
BR0312080A (en) 2007-05-29
US7633895B2 (en) 2009-12-15
CN100492938C (en) 2009-05-27
WO2004002009A2 (en) 2003-12-31
MXPA04012325A (en) 2005-04-08
EP1516444A2 (en) 2005-03-23
CN1663148A (en) 2005-08-31

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