GB2320403B - Search apparatus and method for use in cdma receiver - Google Patents

Search apparatus and method for use in cdma receiver

Info

Publication number
GB2320403B
GB2320403B GB9725560A GB9725560A GB2320403B GB 2320403 B GB2320403 B GB 2320403B GB 9725560 A GB9725560 A GB 9725560A GB 9725560 A GB9725560 A GB 9725560A GB 2320403 B GB2320403 B GB 2320403B
Authority
GB
United Kingdom
Prior art keywords
search apparatus
cdma receiver
cdma
receiver
search
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 - Fee Related
Application number
GB9725560A
Other versions
GB9725560D0 (en
GB2320403A (en
Inventor
Hi-Chan Moon
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.)
Samsung Electronics Co Ltd
Original Assignee
Samsung Electronics Co Ltd
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 Samsung Electronics Co Ltd filed Critical Samsung Electronics Co Ltd
Publication of GB9725560D0 publication Critical patent/GB9725560D0/en
Publication of GB2320403A publication Critical patent/GB2320403A/en
Application granted granted Critical
Publication of GB2320403B publication Critical patent/GB2320403B/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

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
    • H04B1/7073—Synchronisation aspects
    • H04B1/7075—Synchronisation aspects with code phase acquisition
    • H04B1/70754—Setting of search window, i.e. range of code offsets to be searched
    • 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
    • H04B1/70775—Multi-dwell schemes, i.e. multiple accumulation times
    • 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
    • H04B1/70758—Multimode search, i.e. using multiple search strategies
    • 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
    • H04B1/7085—Synchronisation aspects using a code tracking loop, e.g. a delay-locked loop
    • 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
    • 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
    • H04B1/70755—Setting of lock conditions, e.g. threshold
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04J—MULTIPLEX COMMUNICATION
    • H04J13/00—Code division multiplex systems
    • H04J13/0007—Code type
    • H04J13/0022—PN, e.g. Kronecker
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04J—MULTIPLEX COMMUNICATION
    • H04J13/00—Code division multiplex systems
    • H04J13/10—Code generation
GB9725560A 1996-12-03 1997-12-03 Search apparatus and method for use in cdma receiver Expired - Fee Related GB2320403B (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
KR19960061401 1996-12-03

Publications (3)

Publication Number Publication Date
GB9725560D0 GB9725560D0 (en) 1998-02-04
GB2320403A GB2320403A (en) 1998-06-17
GB2320403B true GB2320403B (en) 1999-05-05

Family

ID=19485596

Family Applications (1)

Application Number Title Priority Date Filing Date
GB9725560A Expired - Fee Related GB2320403B (en) 1996-12-03 1997-12-03 Search apparatus and method for use in cdma receiver

Country Status (4)

Country Link
KR (1) KR100251558B1 (en)
CN (1) CN1193225A (en)
BR (1) BR9705504A (en)
GB (1) GB2320403B (en)

Families Citing this family (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB9927919D0 (en) * 1999-11-26 2000-01-26 Roke Manor Research Method for performing timing measurements off air synchronisation
US7224719B1 (en) 2000-03-31 2007-05-29 Qualcomm, Incorporated Fast acquisition of a pilot signal in a wireless communication device
WO2002011404A2 (en) * 2000-07-31 2002-02-07 Morphics Technology, Inc. Apparatus and method for configurable multi-dwell search engine for spread spectrum applications
US6940827B2 (en) * 2001-03-09 2005-09-06 Adaptix, Inc. Communication system using OFDM for one direction and DSSS for another direction
US7164720B2 (en) 2003-03-03 2007-01-16 Mitsubishi Electric Research Laboratories, Inc. Method and system for acquiring ultra-wide-bandwidth communications signals using average block searches
US7292619B2 (en) * 2003-03-03 2007-11-06 Mitsubishi Electric Research Laboratories Method and system for acquiring ultra-wide-bandwidth communications signals using sequential block searches
CN1698332B (en) * 2003-03-03 2010-04-28 三菱电机株式会社 Method and system for acquiring a received impulse radio signal
US7623565B2 (en) * 2004-09-20 2009-11-24 Cypress Semiconductor Corporation Method for providing packet framing in a communication system
CN101102124B (en) * 2007-07-27 2010-04-14 中兴通讯股份有限公司 A Rake receiving method and device
CN101572565B (en) * 2009-06-05 2013-03-13 华为技术有限公司 Real-time antenna data searching method, device and site

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0654913A2 (en) * 1993-11-23 1995-05-24 Nokia Mobile Phones Ltd. Synchronization technique for pseudonoise signals
WO1996014697A1 (en) * 1994-11-07 1996-05-17 Aeronet Wireless Communications, Inc. Correlation system for use in wireless direct sequence spread spectrum systems

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0654913A2 (en) * 1993-11-23 1995-05-24 Nokia Mobile Phones Ltd. Synchronization technique for pseudonoise signals
WO1996014697A1 (en) * 1994-11-07 1996-05-17 Aeronet Wireless Communications, Inc. Correlation system for use in wireless direct sequence spread spectrum systems

Also Published As

Publication number Publication date
GB9725560D0 (en) 1998-02-04
BR9705504A (en) 1999-10-05
KR100251558B1 (en) 2000-04-15
KR19980063647A (en) 1998-10-07
CN1193225A (en) 1998-09-16
GB2320403A (en) 1998-06-17

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Legal Events

Date Code Title Description
PCNP Patent ceased through non-payment of renewal fee