SE0001628D0 - Förfarande och anordning för spårning av en kommunikationssignal i ett trådlöst kommunikationssystem - Google Patents
Förfarande och anordning för spårning av en kommunikationssignal i ett trådlöst kommunikationssystemInfo
- Publication number
- SE0001628D0 SE0001628D0 SE0001628A SE0001628A SE0001628D0 SE 0001628 D0 SE0001628 D0 SE 0001628D0 SE 0001628 A SE0001628 A SE 0001628A SE 0001628 A SE0001628 A SE 0001628A SE 0001628 D0 SE0001628 D0 SE 0001628D0
- Authority
- SE
- Sweden
- Prior art keywords
- offset value
- tracking
- multipath signal
- signal
- retard
- Prior art date
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
- 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
- H04B1/7097—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
- H04B2001/70706—Spread spectrum techniques using direct sequence modulation using a code tracking loop, e.g. a delay locked loop
Landscapes
- Engineering & Computer Science (AREA)
- Computer Networks & Wireless Communication (AREA)
- Signal Processing (AREA)
- Mobile Radio Communication Systems (AREA)
- Circuits Of Receivers In General (AREA)
- Noise Elimination (AREA)
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US08/964,124 US5987016A (en) | 1997-11-04 | 1997-11-04 | Method and apparatus for tracking a communication signal in a wireless communication system |
PCT/US1998/016154 WO1999023770A1 (en) | 1997-11-04 | 1998-07-31 | Method and apparatus for tracking a communication signal in a wireless communication system |
Publications (3)
Publication Number | Publication Date |
---|---|
SE0001628D0 true SE0001628D0 (sv) | 2000-05-04 |
SE0001628L SE0001628L (sv) | 2000-07-04 |
SE521915C2 SE521915C2 (sv) | 2003-12-16 |
Family
ID=25508156
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
SE0001628A SE521915C2 (sv) | 1997-11-04 | 2000-05-04 | Förfarande och anordning för spårning av en kommunikationssignal i ett trådlöst kommunikationssystem |
Country Status (13)
Country | Link |
---|---|
US (1) | US5987016A (sv) |
JP (1) | JP3920570B2 (sv) |
KR (1) | KR20010031734A (sv) |
CN (1) | CN1118961C (sv) |
BR (1) | BR9813927A (sv) |
CA (1) | CA2308483A1 (sv) |
DE (1) | DE19882771T1 (sv) |
FI (1) | FI20001031A (sv) |
FR (1) | FR2770708A1 (sv) |
GB (1) | GB2347330B (sv) |
IL (1) | IL135771A0 (sv) |
SE (1) | SE521915C2 (sv) |
WO (1) | WO1999023770A1 (sv) |
Families Citing this family (65)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US7092369B2 (en) | 1995-11-17 | 2006-08-15 | Symbol Technologies, Inc. | Communications network with wireless gateways for mobile terminal access |
US6531982B1 (en) | 1997-09-30 | 2003-03-11 | Sirf Technology, Inc. | Field unit for use in a GPS system |
US6327471B1 (en) | 1998-02-19 | 2001-12-04 | Conexant Systems, Inc. | Method and an apparatus for positioning system assisted cellular radiotelephone handoff and dropoff |
JPH11261440A (ja) * | 1998-03-11 | 1999-09-24 | Oki Electric Ind Co Ltd | 合成受信装置 |
US6348744B1 (en) | 1998-04-14 | 2002-02-19 | Conexant Systems, Inc. | Integrated power management module |
US7711038B1 (en) | 1998-09-01 | 2010-05-04 | Sirf Technology, Inc. | System and method for despreading in a spread spectrum matched filter |
US7545854B1 (en) | 1998-09-01 | 2009-06-09 | Sirf Technology, Inc. | Doppler corrected spread spectrum matched filter |
US6125137A (en) * | 1998-09-11 | 2000-09-26 | Motorola, Inc. | Apparatus and method for performing a signal search in a coherent wireless communication system |
US6693953B2 (en) | 1998-09-30 | 2004-02-17 | Skyworks Solutions, Inc. | Adaptive wireless communication receiver |
US7184462B1 (en) * | 1998-12-04 | 2007-02-27 | Telefonaktiebolaget L M Ericsson (Publ) | Method and apparatus for configuring a rake receiver |
US6448925B1 (en) | 1999-02-04 | 2002-09-10 | Conexant Systems, Inc. | Jamming detection and blanking for GPS receivers |
US6606349B1 (en) | 1999-02-04 | 2003-08-12 | Sirf Technology, Inc. | Spread spectrum receiver performance improvement |
US6577271B1 (en) | 1999-03-30 | 2003-06-10 | Sirf Technology, Inc | Signal detector employing coherent integration |
US6304216B1 (en) | 1999-03-30 | 2001-10-16 | Conexant Systems, Inc. | Signal detector employing correlation analysis of non-uniform and disjoint sample segments |
US6351486B1 (en) | 1999-05-25 | 2002-02-26 | Conexant Systems, Inc. | Accelerated selection of a base station in a wireless communication system |
US6278403B1 (en) | 1999-09-17 | 2001-08-21 | Sirf Technology, Inc. | Autonomous hardwired tracking loop coprocessor for GPS and WAAS receiver |
US6922434B2 (en) * | 1999-10-19 | 2005-07-26 | Ericsson Inc. | Apparatus and methods for finger delay selection in RAKE receivers |
US6526322B1 (en) | 1999-12-16 | 2003-02-25 | Sirf Technology, Inc. | Shared memory architecture in GPS signal processing |
US6788655B1 (en) | 2000-04-18 | 2004-09-07 | Sirf Technology, Inc. | Personal communications device with ratio counter |
US6714158B1 (en) | 2000-04-18 | 2004-03-30 | Sirf Technology, Inc. | Method and system for data detection in a global positioning system satellite receiver |
US7885314B1 (en) | 2000-05-02 | 2011-02-08 | Kenneth Scott Walley | Cancellation system and method for a wireless positioning system |
US8116976B2 (en) | 2000-05-18 | 2012-02-14 | Csr Technology Inc. | Satellite based positioning method and system for coarse location positioning |
US6389291B1 (en) | 2000-08-14 | 2002-05-14 | Sirf Technology | Multi-mode global positioning system for use with wireless networks |
US7929928B2 (en) | 2000-05-18 | 2011-04-19 | Sirf Technology Inc. | Frequency phase correction system |
US6778136B2 (en) | 2001-12-13 | 2004-08-17 | Sirf Technology, Inc. | Fast acquisition of GPS signal |
US7970412B2 (en) | 2000-05-18 | 2011-06-28 | Sirf Technology, Inc. | Aided location communication system |
US7970411B2 (en) | 2000-05-18 | 2011-06-28 | Sirf Technology, Inc. | Aided location communication system |
US6671620B1 (en) | 2000-05-18 | 2003-12-30 | Sirf Technology, Inc. | Method and apparatus for determining global position using almanac information |
US8078189B2 (en) | 2000-08-14 | 2011-12-13 | Sirf Technology, Inc. | System and method for providing location based services over a network |
US6462708B1 (en) | 2001-04-05 | 2002-10-08 | Sirf Technology, Inc. | GPS-based positioning system for mobile GPS terminals |
US7949362B2 (en) | 2000-05-18 | 2011-05-24 | Sirf Technology, Inc. | Satellite positioning aided communication system selection |
US6427120B1 (en) * | 2000-08-14 | 2002-07-30 | Sirf Technology, Inc. | Information transfer in a multi-mode global positioning system used with wireless networks |
US6856794B1 (en) | 2000-07-27 | 2005-02-15 | Sirf Technology, Inc. | Monolithic GPS RF front end integrated circuit |
US7616705B1 (en) | 2000-07-27 | 2009-11-10 | Sirf Technology Holdings, Inc. | Monolithic GPS RF front end integrated circuit |
US7236883B2 (en) | 2000-08-14 | 2007-06-26 | Sirf Technology, Inc. | Aiding in a satellite positioning system |
US7680178B2 (en) | 2000-08-24 | 2010-03-16 | Sirf Technology, Inc. | Cross-correlation detection and elimination in a receiver |
AU2001277085A1 (en) | 2000-08-24 | 2002-03-04 | Sirf Technology, Inc. | Apparatus for reducing auto-correlation or cross-correlation in weak cdma signals |
US6931233B1 (en) | 2000-08-31 | 2005-08-16 | Sirf Technology, Inc. | GPS RF front end IC with programmable frequency synthesizer for use in wireless phones |
US7047023B1 (en) | 2000-12-01 | 2006-05-16 | Sirf Technology, Inc. | GPS RF front end IC with frequency plan for improved integrability |
US7747236B1 (en) | 2000-12-11 | 2010-06-29 | Sirf Technology, Inc. | Method and apparatus for estimating local oscillator frequency for GPS receivers |
US7113552B1 (en) | 2000-12-21 | 2006-09-26 | Sirf Technology, Inc. | Phase sampling techniques using amplitude bits for digital receivers |
US7769078B2 (en) * | 2000-12-22 | 2010-08-03 | Telefonaktiebolaget Lm Ericsson (Publ) | Apparatus, methods and computer program products for delay selection in a spread-spectrum receiver |
US7671489B1 (en) | 2001-01-26 | 2010-03-02 | Sirf Technology, Inc. | Method and apparatus for selectively maintaining circuit power when higher voltages are present |
US6680703B1 (en) | 2001-02-16 | 2004-01-20 | Sirf Technology, Inc. | Method and apparatus for optimally tuning a circularly polarized patch antenna after installation |
US6703971B2 (en) | 2001-02-21 | 2004-03-09 | Sirf Technologies, Inc. | Mode determination for mobile GPS terminals |
US7076256B1 (en) | 2001-04-16 | 2006-07-11 | Sirf Technology, Inc. | Method and apparatus for transmitting position data using control channels in wireless networks |
US7877104B2 (en) * | 2001-05-21 | 2011-01-25 | Sirf Technology Inc. | Method for synchronizing a radio network using end user radio terminals |
US7925210B2 (en) | 2001-05-21 | 2011-04-12 | Sirf Technology, Inc. | Synchronizing a radio network with end user radio terminals |
US8244271B2 (en) | 2001-05-21 | 2012-08-14 | Csr Technology Inc. | Distributed data collection of satellite data |
US7668554B2 (en) | 2001-05-21 | 2010-02-23 | Sirf Technology, Inc. | Network system for aided GPS broadcast positioning |
US6618010B2 (en) | 2001-11-14 | 2003-09-09 | United States Of America As Represented By The Administrator Of The National Aeronautics And Space Administration | Passive tracking system and method |
US7372892B2 (en) | 2002-04-29 | 2008-05-13 | Interdigital Technology Corporation | Simple and robust digital code tracking loop for wireless communication systems |
US6873826B2 (en) * | 2002-08-06 | 2005-03-29 | Motorola, Inc. | Method and mobile station for reporting multi-path signals based on minimum separation |
US7474688B2 (en) * | 2002-10-01 | 2009-01-06 | Texas Instruments Incorporated | System and method for detecting multiple direct sequence spread spectrum signals using a multi-mode searcher |
CN100456662C (zh) * | 2002-11-15 | 2009-01-28 | 华为技术有限公司 | 一种用于码分多址通信***的多径跟踪方法和装置 |
US20040109494A1 (en) * | 2002-12-10 | 2004-06-10 | Kindred Daniel R. | Finger merge protection for rake receivers using polling |
JP2007505292A (ja) | 2003-09-02 | 2007-03-08 | サーフ テクノロジー インコーポレイテッド | 衛星測位システム受信機のための制御と機能 |
US8138972B2 (en) | 2003-09-02 | 2012-03-20 | Csr Technology Inc. | Signal processing system for satellite positioning signals |
US7310365B2 (en) * | 2003-10-31 | 2007-12-18 | Texas Instruments Incorporated | Group decision rule in code tracking using a delay lock loop (DLL) |
US7305056B2 (en) * | 2003-11-18 | 2007-12-04 | Ibiquity Digital Corporation | Coherent tracking for FM in-band on-channel receivers |
US7365680B2 (en) | 2004-02-10 | 2008-04-29 | Sirf Technology, Inc. | Location services system that reduces auto-correlation or cross-correlation in weak signals |
US8527855B2 (en) * | 2004-08-16 | 2013-09-03 | Koninklijke Philips N.V. | Interleaving and parsing for MIMO-OFDM systems |
EP1952173A2 (en) | 2005-10-28 | 2008-08-06 | SiRF Technology, Inc. | Global positioning system receiver timeline management |
US20130257667A1 (en) * | 2012-03-30 | 2013-10-03 | Broadcom Corporation | Antenna Tuning |
US10408930B2 (en) * | 2016-09-28 | 2019-09-10 | Intel Corporation | Beamforming training using echoes of an omnidirectional pulse |
Family Cites Families (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5390207A (en) * | 1990-11-28 | 1995-02-14 | Novatel Communications Ltd. | Pseudorandom noise ranging receiver which compensates for multipath distortion by dynamically adjusting the time delay spacing between early and late correlators |
US5233626A (en) * | 1992-05-11 | 1993-08-03 | Space Systems/Loral Inc. | Repeater diversity spread spectrum communication system |
US5490165A (en) * | 1993-10-28 | 1996-02-06 | Qualcomm Incorporated | Demodulation element assignment in a system capable of receiving multiple signals |
US5621752A (en) * | 1994-06-23 | 1997-04-15 | Qualcomm Incorporated | Adaptive sectorization in a spread spectrum communication system |
US5477195A (en) * | 1994-12-01 | 1995-12-19 | Stanford Telecommunications, Inc. | Near optimal quasi-coherent delay lock loop (QCDLL) for tracking direct sequence signals and CDMA |
US5574721A (en) * | 1994-12-09 | 1996-11-12 | Stanford Telecommunications, Inc. | Orthogonal code tracking system having phantom carrier signal |
US5691974A (en) * | 1995-01-04 | 1997-11-25 | Qualcomm Incorporated | Method and apparatus for using full spectrum transmitted power in a spread spectrum communication system for tracking individual recipient phase, time and energy |
US5608722A (en) * | 1995-04-03 | 1997-03-04 | Qualcomm Incorporated | Multi-user communication system architecture with distributed receivers |
-
1997
- 1997-11-04 US US08/964,124 patent/US5987016A/en not_active Expired - Lifetime
-
1998
- 1998-07-31 GB GB0010682A patent/GB2347330B/en not_active Expired - Fee Related
- 1998-07-31 CN CN98810704A patent/CN1118961C/zh not_active Expired - Fee Related
- 1998-07-31 DE DE19882771T patent/DE19882771T1/de not_active Ceased
- 1998-07-31 CA CA002308483A patent/CA2308483A1/en not_active Abandoned
- 1998-07-31 KR KR1020007004797A patent/KR20010031734A/ko not_active Application Discontinuation
- 1998-07-31 BR BR9813927-4A patent/BR9813927A/pt not_active IP Right Cessation
- 1998-07-31 JP JP2000519512A patent/JP3920570B2/ja not_active Expired - Fee Related
- 1998-07-31 WO PCT/US1998/016154 patent/WO1999023770A1/en not_active Application Discontinuation
- 1998-07-31 IL IL13577198A patent/IL135771A0/xx unknown
- 1998-10-09 FR FR9812647A patent/FR2770708A1/fr active Pending
-
2000
- 2000-05-03 FI FI20001031A patent/FI20001031A/sv not_active Application Discontinuation
- 2000-05-04 SE SE0001628A patent/SE521915C2/sv not_active IP Right Cessation
Also Published As
Publication number | Publication date |
---|---|
JP2001522192A (ja) | 2001-11-13 |
FR2770708A1 (fr) | 1999-04-30 |
CA2308483A1 (en) | 1999-05-14 |
KR20010031734A (ko) | 2001-04-16 |
GB0010682D0 (en) | 2000-06-28 |
FI20001031A (sv) | 2000-05-03 |
DE19882771T1 (de) | 2000-11-30 |
US5987016A (en) | 1999-11-16 |
GB2347330A (en) | 2000-08-30 |
WO1999023770A1 (en) | 1999-05-14 |
SE521915C2 (sv) | 2003-12-16 |
BR9813927A (pt) | 2002-05-07 |
CN1118961C (zh) | 2003-08-20 |
CN1278377A (zh) | 2000-12-27 |
JP3920570B2 (ja) | 2007-05-30 |
SE0001628L (sv) | 2000-07-04 |
IL135771A0 (en) | 2001-05-20 |
GB2347330B (en) | 2002-08-28 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
NUG | Patent has lapsed |