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FI20040925A7 - Indikering av trafikkanaler i ett CDMA-kommunikationssystem - Google Patents

Indikering av trafikkanaler i ett CDMA-kommunikationssystem Download PDF

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Publication number
FI20040925A7
FI20040925A7 FI20040925A FI20040925A FI20040925A7 FI 20040925 A7 FI20040925 A7 FI 20040925A7 FI 20040925 A FI20040925 A FI 20040925A FI 20040925 A FI20040925 A FI 20040925A FI 20040925 A7 FI20040925 A7 FI 20040925A7
Authority
FI
Finland
Prior art keywords
signal
code
message
pilot
received
Prior art date
Application number
FI20040925A
Other languages
English (en)
Finnish (fi)
Other versions
FI20040925L (sv
Inventor
Gary R Lomp
Fatih Ozluturk
Avi Silverberg
Original Assignee
Interdigital Tech 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
Priority claimed from PCT/US1996/011059 external-priority patent/WO1997002675A2/en
Priority claimed from US08/815,299 external-priority patent/US6049535A/en
Application filed by Interdigital Tech Corp filed Critical Interdigital Tech Corp
Publication of FI20040925L publication Critical patent/FI20040925L/sv
Publication of FI20040925A7 publication Critical patent/FI20040925A7/sv

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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
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    • H04B7/00—Radio transmission systems, i.e. using radiation field
    • H04B7/24—Radio transmission systems, i.e. using radiation field for communication between two or more posts
    • H04B7/26—Radio transmission systems, i.e. using radiation field for communication between two or more posts at least one of which is mobile
    • H04B7/2628—Radio transmission systems, i.e. using radiation field for communication between two or more posts at least one of which is mobile using code-division multiple access [CDMA] or spread spectrum multiple access [SSMA]
    • H04B7/2637—Radio transmission systems, i.e. using radiation field for communication between two or more posts at least one of which is mobile using code-division multiple access [CDMA] or spread spectrum multiple access [SSMA] for logical channel control
    • G—PHYSICS
    • G06—COMPUTING OR CALCULATING; COUNTING
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    • G06F13/14—Handling requests for interconnection or transfer
    • G06F13/36—Handling requests for interconnection or transfer for access to common bus or bus system
    • G06F13/368—Handling requests for interconnection or transfer for access to common bus or bus system with decentralised access control
    • G06F13/374—Handling requests for interconnection or transfer for access to common bus or bus system with decentralised access control using a self-select method with individual priority code comparator
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Abstract

Ett CDMA-modem omfattar en sändardel med: en kodgenerator som alstrar en pilotkodsignal och ett antal meddelandekodsignaler; en spridningskrets som alstrar en bandspridd meddelandesignal genom att kombinera var och en av informationssignalerna med en motsvarande meddelandekodsignal; och en global pilotkodgenerator som alstrar en global med vilken meddelandekodsignalerna synkroniseras. CDMA-modemet omfattar också en mottagardel med tillhörande pilot-kodgenerator och en grupp tillhörande pilotkodkorrelatorer som korrelerar kodfas-fördröjda versioner av pilotsignalen med en mottagen CDM-signal för att bilda en icke bandspridd pilotsignal. Pilotsignalens kodfas ändras i enlighet med värdet på en akvisitionssignal tills en pilotsignal mottas. Den tillhörande pilotkodspårningslogiken ställer in pilotkodsignalens fas enligt akvisitionssignalen så att den icke bandspridda pilotkodsignalens signalstyrka maximeras. CDMA-modemets mottagardel innehåller slutligen en grupp akvisitionskretsar för meddelandesignaler vilka var och en innehåller ett antal korrelatorer för mottagningsmeddelandesignaler som korrelerar lokala mottagna meddelande-kodsignaler med CDM-signalen och bildar motsvarande icke-bandspridda mottagna meddelandesignal.
FI20040925A 1995-06-30 2004-07-02 Indikering av trafikkanaler i ett CDMA-kommunikationssystem FI20040925A7 (sv)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
US77595P 1995-06-30 1995-06-30
PCT/US1996/011059 WO1997002675A2 (en) 1995-06-30 1996-06-27 Cdma modem
US08/815,299 US6049535A (en) 1996-06-27 1997-03-11 Code division multiple access (CDMA) communication system

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FI20040925L FI20040925L (sv) 2004-07-02
FI20040925A7 true FI20040925A7 (sv) 2004-07-02

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