NO20006509L - Method and apparatus for storing and accessing various chip sequences - Google Patents
Method and apparatus for storing and accessing various chip sequencesInfo
- Publication number
- NO20006509L NO20006509L NO20006509A NO20006509A NO20006509L NO 20006509 L NO20006509 L NO 20006509L NO 20006509 A NO20006509 A NO 20006509A NO 20006509 A NO20006509 A NO 20006509A NO 20006509 L NO20006509 L NO 20006509L
- Authority
- NO
- Norway
- Prior art keywords
- sequence
- sequences
- memory
- counter value
- idle mode
- Prior art date
Links
Classifications
-
- 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
- H04B1/711—Interference-related aspects the interference being multi-path interference
- H04B1/7115—Constructive combining of multi-path signals, i.e. RAKE receivers
-
- 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
- H04B1/7073—Synchronisation aspects
- H04B1/7075—Synchronisation aspects with code phase acquisition
-
- 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
- H04B1/709—Correlator structure
-
- 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
- H04B1/711—Interference-related aspects the interference being multi-path interference
- H04B1/7115—Constructive combining of multi-path signals, i.e. RAKE receivers
- H04B1/7117—Selection, re-selection, allocation or re-allocation of paths to fingers, e.g. timing offset control of allocated fingers
-
- 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
- H04B2201/70707—Efficiency-related aspects
Abstract
En chip-sekvensgenerator (160) lagrer sekvensen i et minne (190) som har et minneadresseringssystem. En chip- sekvensleser bruker en minneleseadressegenerator (150) for å aksessere forskjellige faser av sekvensene. Leseren leve- rer forskjellige faser til korrelatorer eller kretser i en spredt-spektrum mottager. Minneleseadressegeneratoren gene- rerer adresser avhengig av en tannseleksjonsverdi og en tellerverdi. Hver tannseleksjonsverdi korresponderer til en bestemt fase av en sekvens. Tellerverdien korresponderer til en tidsposisjon. I inaktiv modus endres tellerverdien til å korrespondere til antallet klokkesykluser i en inak- tiv periode. Mottageren sparer effekt i løpet av inaktiv modus og aksesserer korrekt fase av sekvensen ved aktive- ring. Minnet kan også lagre pagingsekvenser. Chip- sekvensgeneratoren genererer nye sekvenser når nødvendig, og skriver dem til adresser som er brukt til å lagre sek- venser som ikke lenger er nødvendig.A chip sequence generator (160) stores the sequence in a memory (190) having a memory addressing system. A chip sequence reader uses a memory address generator (150) to access different phases of the sequences. The reader delivers different phases to correlators or circuits in a spread spectrum receiver. The memory address generator generates addresses depending on a tooth selection value and a counter value. Each tooth selection value corresponds to a specific phase of a sequence. The counter value corresponds to a time position. In idle mode, the counter value changes to correspond to the number of clock cycles in an inactive period. The receiver saves power during idle mode and accesses the correct phase of the sequence upon activation. The memory can also store paging sequences. The chip sequence generator generates new sequences when needed, and writes them to addresses that are used to store sequences that are no longer needed.
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US10277098A | 1998-06-23 | 1998-06-23 | |
PCT/SE1999/001078 WO1999067895A1 (en) | 1998-06-23 | 1999-06-16 | Method and apparatus for storing and accessing different chip sequences |
Publications (2)
Publication Number | Publication Date |
---|---|
NO20006509L true NO20006509L (en) | 2000-12-20 |
NO20006509D0 NO20006509D0 (en) | 2000-12-20 |
Family
ID=22291593
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
NO20006509A NO20006509D0 (en) | 1998-06-23 | 2000-12-20 | Method and apparatus for storing and accessing various chip sequences |
Country Status (15)
Country | Link |
---|---|
EP (1) | EP1090465A1 (en) |
JP (1) | JP2002519887A (en) |
KR (1) | KR20010071566A (en) |
CN (1) | CN1307756A (en) |
AR (1) | AR018927A1 (en) |
AU (1) | AU4941099A (en) |
BR (1) | BR9911434A (en) |
CA (1) | CA2335742A1 (en) |
EE (1) | EE200000777A (en) |
HK (1) | HK1039225A1 (en) |
ID (1) | ID27301A (en) |
IL (1) | IL139840A0 (en) |
NO (1) | NO20006509D0 (en) |
RU (1) | RU2001101930A (en) |
WO (1) | WO1999067895A1 (en) |
Families Citing this family (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US7085246B1 (en) | 1999-05-19 | 2006-08-01 | Motorola, Inc. | Method and apparatus for acquisition of a spread-spectrum signal |
US7031271B1 (en) * | 1999-05-19 | 2006-04-18 | Motorola, Inc. | Method of and apparatus for activating a spread-spectrum radiotelephone |
US7522655B2 (en) | 2002-09-09 | 2009-04-21 | Infineon Technologies Ag | Method and device for carrying out a plurality of correlation procedures in a mobile telephony environment |
DE10241691A1 (en) * | 2002-09-09 | 2004-03-25 | Infineon Technologies Ag | Correlation device for mobile radio system correlates generated correlation word with dataword obtained from stored sequence of sample values of received signal |
CN100365945C (en) * | 2005-07-28 | 2008-01-30 | 上海大学 | Spread spectrum communicatoion system and non-centre wireless network for implementing CDMA by single different phase sequence of spread spectrum code |
CN101162919B (en) * | 2006-10-11 | 2011-01-05 | 中兴通讯股份有限公司 | Data caching circuit |
Family Cites Families (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5345508A (en) * | 1993-08-23 | 1994-09-06 | Apple Computer, Inc. | Method and apparatus for variable-overhead cached encryption |
US5490165A (en) * | 1993-10-28 | 1996-02-06 | Qualcomm Incorporated | Demodulation element assignment in a system capable of receiving multiple signals |
JP2689890B2 (en) * | 1993-12-30 | 1997-12-10 | 日本電気株式会社 | Spread spectrum receiver |
US5457713A (en) * | 1994-03-07 | 1995-10-10 | Sanconix, Inc. | Spread spectrum alignment repositioning method |
JP3372135B2 (en) * | 1995-05-24 | 2003-01-27 | ソニー株式会社 | Communication terminal device |
EP0767544A3 (en) * | 1995-10-04 | 2002-02-27 | Interuniversitair Micro-Elektronica Centrum Vzw | Programmable modem using spread spectrum communication |
-
1999
- 1999-06-16 CN CN99807850A patent/CN1307756A/en active Pending
- 1999-06-16 RU RU2001101930/09A patent/RU2001101930A/en not_active Application Discontinuation
- 1999-06-16 IL IL13984099A patent/IL139840A0/en unknown
- 1999-06-16 CA CA002335742A patent/CA2335742A1/en not_active Abandoned
- 1999-06-16 EP EP99933343A patent/EP1090465A1/en not_active Withdrawn
- 1999-06-16 AU AU49410/99A patent/AU4941099A/en not_active Abandoned
- 1999-06-16 EE EEP200000777A patent/EE200000777A/en unknown
- 1999-06-16 ID IDW20010050A patent/ID27301A/en unknown
- 1999-06-16 KR KR1020007014605A patent/KR20010071566A/en not_active Application Discontinuation
- 1999-06-16 BR BR9911434-8A patent/BR9911434A/en not_active Application Discontinuation
- 1999-06-16 WO PCT/SE1999/001078 patent/WO1999067895A1/en not_active Application Discontinuation
- 1999-06-16 JP JP2000556455A patent/JP2002519887A/en not_active Withdrawn
- 1999-06-23 AR ARP990103011A patent/AR018927A1/en unknown
-
2000
- 2000-12-20 NO NO20006509A patent/NO20006509D0/en not_active Application Discontinuation
-
2002
- 2002-01-30 HK HK02100737.6A patent/HK1039225A1/en unknown
Also Published As
Publication number | Publication date |
---|---|
EE200000777A (en) | 2002-04-15 |
AU4941099A (en) | 2000-01-10 |
JP2002519887A (en) | 2002-07-02 |
KR20010071566A (en) | 2001-07-28 |
CA2335742A1 (en) | 1999-12-29 |
AR018927A1 (en) | 2001-12-12 |
WO1999067895A1 (en) | 1999-12-29 |
BR9911434A (en) | 2001-03-20 |
RU2001101930A (en) | 2002-12-20 |
HK1039225A1 (en) | 2002-04-12 |
EP1090465A1 (en) | 2001-04-11 |
IL139840A0 (en) | 2002-02-10 |
CN1307756A (en) | 2001-08-08 |
NO20006509D0 (en) | 2000-12-20 |
ID27301A (en) | 2001-03-22 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
FC2A | Withdrawal, rejection or dismissal of laid open patent application |