AR011668A1 - Metodo para adquirir una senal en un sistema de comunicacion de acceso multiple por division de codigos (cdma), y radiotelefono que permite la operacion en dicho sistema de comunicacion - Google Patents
Metodo para adquirir una senal en un sistema de comunicacion de acceso multiple por division de codigos (cdma), y radiotelefono que permite la operacion en dicho sistema de comunicacionInfo
- Publication number
- AR011668A1 AR011668A1 ARP980100611A ARP980100611A AR011668A1 AR 011668 A1 AR011668 A1 AR 011668A1 AR P980100611 A ARP980100611 A AR P980100611A AR P980100611 A ARP980100611 A AR P980100611A AR 011668 A1 AR011668 A1 AR 011668A1
- Authority
- AR
- Argentina
- Prior art keywords
- communication system
- real
- time
- cdma
- acquire
- 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
- H04B1/70751—Synchronisation aspects with code phase acquisition using partial detection
- H04B1/70752—Partial correlation
-
- 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
- H04B1/70756—Jumping within the code, i.e. masking or slewing
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L5/00—Arrangements affording multiple use of the transmission path
- H04L5/003—Arrangements for allocating sub-channels of the transmission path
- H04L5/0048—Allocation of pilot signals, i.e. of signals known to the receiver
-
- 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
- H04B1/7077—Multi-step acquisition, e.g. multi-dwell, coarse-fine or validation
-
- 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
- H04B2201/70701—Orthogonal indexing scheme relating to spread spectrum techniques in general relating to direct sequence modulation featuring pilot assisted reception
-
- 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
-
- 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
- H04B2201/70703—Orthogonal indexing scheme relating to spread spectrum techniques in general relating to direct sequence modulation using multiple or variable rates
-
- 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
- H04B2201/70709—Efficiency-related aspects with discontinuous detection
Abstract
Un receptor buscador (114) incluye una memoria intermedia de muestreo (202) que almacena muestras de senales cargadas utilizando un reloj de tiempo real.Un generador de secuencia lineal de tiempo real (RT LSG) (206) guarda un estado inicial;s e utiliza un reloj de tiempo real para cronometrar estegenerador. Se cargan los contenidos del RT LSG en un generador de secuencia lineal de tiempo no real (NRT LSG) (208) cuando comienza el procesamiento delas muestras. Se lleva a cabo unacorre lacion de las muestras usando un reloj de tiempo irreal para permitir que el procesamiento de senales sedesconecte de la velocidad en chips. Es posible anular la alimentacion al extremo análogo (108) o sintonizarlo en otra frecuenciadurante elprocesamiento de tiempo no real.
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US08/807,075 US6144649A (en) | 1997-02-27 | 1997-02-27 | Method and apparatus for acquiring a pilot signal in a CDMA receiver |
Publications (1)
Publication Number | Publication Date |
---|---|
AR011668A1 true AR011668A1 (es) | 2000-08-30 |
Family
ID=25195507
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
ARP980100611A AR011668A1 (es) | 1997-02-27 | 1998-02-11 | Metodo para adquirir una senal en un sistema de comunicacion de acceso multiple por division de codigos (cdma), y radiotelefono que permite la operacion en dicho sistema de comunicacion |
Country Status (13)
Country | Link |
---|---|
US (2) | US6144649A (es) |
JP (1) | JP4260915B2 (es) |
KR (1) | KR100280990B1 (es) |
CN (1) | CN1135767C (es) |
AR (1) | AR011668A1 (es) |
BR (1) | BR9800744B1 (es) |
DE (1) | DE19806095C2 (es) |
FR (1) | FR2760157B1 (es) |
GB (1) | GB2323749B (es) |
HU (1) | HU220716B1 (es) |
PL (1) | PL188807B1 (es) |
RU (1) | RU2208914C2 (es) |
ZA (1) | ZA9710879B (es) |
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US6603751B1 (en) * | 1998-02-13 | 2003-08-05 | Qualcomm Incorporated | Method and system for performing a handoff in a wireless communication system, such as a hard handoff |
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EP0994581B1 (en) * | 1998-05-13 | 2007-01-24 | Ntt Mobile Communications Network Inc. | Communication method and communication device |
US20030194033A1 (en) | 1998-05-21 | 2003-10-16 | Tiedemann Edward G. | Method and apparatus for coordinating transmission of short messages with hard handoff searches in a wireless communications system |
US6424641B1 (en) * | 1998-08-19 | 2002-07-23 | Nortel Networks Limited | Searcher architecture for CDMA systems |
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US6831929B1 (en) | 1999-03-22 | 2004-12-14 | Texas Instruments Incorporated | Multistage PN code aquisition circuit and method |
JP3428629B2 (ja) * | 1999-03-26 | 2003-07-22 | 日本電気株式会社 | 携帯電話装置及びその電力制御方法 |
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JP4642264B2 (ja) * | 2001-04-03 | 2011-03-02 | 株式会社日立国際電気 | スペクトル拡散通信用相関回路 |
US20030002566A1 (en) * | 2001-06-19 | 2003-01-02 | Mcdonough John G. | System and method for shifting the phase of pseudorandom noise code in direct sequence spread spectrum communications |
US6959053B2 (en) * | 2001-07-13 | 2005-10-25 | Koninklijke Philips Electronics N.V. | Method and apparatus for searching for a pre-defined code in a bit stream |
KR20030031385A (ko) * | 2001-10-15 | 2003-04-21 | 주식회사 세스텍 | 스마트 안테나 시스템에서 칩 레이트로 웨이팅하는핑거와, 그를 이용한 복조 장치 및 방법 |
KR20030033192A (ko) * | 2001-10-18 | 2003-05-01 | 주식회사 세스텍 | 스마트 안테나 시스템에서 심볼레이트와 칩레이트를혼용하여 웨이팅하는 핑거와, 그를 이용한 복조 장치 및방법 |
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-
1997
- 1997-02-27 US US08/807,075 patent/US6144649A/en not_active Expired - Lifetime
- 1997-12-03 ZA ZA9710879A patent/ZA9710879B/xx unknown
- 1997-12-23 FR FR9716352A patent/FR2760157B1/fr not_active Expired - Fee Related
-
1998
- 1998-01-21 GB GB9801284A patent/GB2323749B/en not_active Expired - Fee Related
- 1998-02-11 AR ARP980100611A patent/AR011668A1/es active IP Right Grant
- 1998-02-14 DE DE19806095A patent/DE19806095C2/de not_active Expired - Fee Related
- 1998-02-16 JP JP05017998A patent/JP4260915B2/ja not_active Expired - Fee Related
- 1998-02-20 BR BRPI9800744-0B1A patent/BR9800744B1/pt not_active IP Right Cessation
- 1998-02-23 RU RU98104915/09A patent/RU2208914C2/ru not_active IP Right Cessation
- 1998-02-24 KR KR1019980005721A patent/KR100280990B1/ko not_active IP Right Cessation
- 1998-02-27 HU HU9800432A patent/HU220716B1/hu not_active IP Right Cessation
- 1998-02-27 PL PL98325087A patent/PL188807B1/pl unknown
- 1998-02-27 CN CNB981004687A patent/CN1135767C/zh not_active Expired - Fee Related
-
1999
- 1999-08-03 US US09/368,267 patent/US6175561B1/en not_active Expired - Lifetime
Also Published As
Publication number | Publication date |
---|---|
JPH10257022A (ja) | 1998-09-25 |
PL325087A1 (en) | 1998-08-31 |
HUP9800432A3 (en) | 2000-03-28 |
MX9801560A (es) | 1998-08-30 |
CN1198053A (zh) | 1998-11-04 |
PL188807B1 (pl) | 2005-04-29 |
HU220716B1 (hu) | 2002-05-28 |
US6175561B1 (en) | 2001-01-16 |
HUP9800432A2 (hu) | 1998-10-28 |
KR19980071640A (ko) | 1998-10-26 |
KR100280990B1 (ko) | 2001-02-01 |
GB2323749B (en) | 2001-12-05 |
BR9800744B1 (pt) | 2013-08-27 |
HU9800432D0 (en) | 1998-04-28 |
DE19806095C2 (de) | 2003-12-18 |
ZA9710879B (en) | 1998-06-15 |
GB9801284D0 (en) | 1998-03-18 |
DE19806095A1 (de) | 1998-09-03 |
BR9800744A (pt) | 1999-06-29 |
GB2323749A (en) | 1998-09-30 |
FR2760157B1 (fr) | 2004-09-10 |
JP4260915B2 (ja) | 2009-04-30 |
FR2760157A1 (fr) | 1998-08-28 |
RU2208914C2 (ru) | 2003-07-20 |
CN1135767C (zh) | 2004-01-21 |
US6144649A (en) | 2000-11-07 |
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