DE60222676D1 - Gemeinsame synchronisation und modifikation der koeffizienten eines adaptiven entzerrers für einen cdma empfänger - Google Patents
Gemeinsame synchronisation und modifikation der koeffizienten eines adaptiven entzerrers für einen cdma empfängerInfo
- Publication number
- DE60222676D1 DE60222676D1 DE60222676T DE60222676T DE60222676D1 DE 60222676 D1 DE60222676 D1 DE 60222676D1 DE 60222676 T DE60222676 T DE 60222676T DE 60222676 T DE60222676 T DE 60222676T DE 60222676 D1 DE60222676 D1 DE 60222676D1
- Authority
- DE
- Germany
- Prior art keywords
- delay offset
- equalizer
- difference
- coefficients
- filter coefficients
- 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 - Lifetime
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
- H04B7/00—Radio transmission systems, i.e. using radiation field
- H04B7/005—Control of transmission; Equalising
-
- 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
- H04B1/712—Weighting of fingers for combining, e.g. amplitude control or phase rotation using an inner loop
-
- 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
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L25/00—Baseband systems
- H04L25/02—Details ; arrangements for supplying electrical power along data transmission lines
- H04L25/03—Shaping networks in transmitter or receiver, e.g. adaptive shaping networks
- H04L25/03006—Arrangements for removing intersymbol interference
- H04L2025/0335—Arrangements for removing intersymbol interference characterised by the type of transmission
- H04L2025/03375—Passband transmission
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L25/00—Baseband systems
- H04L25/02—Details ; arrangements for supplying electrical power along data transmission lines
- H04L25/03—Shaping networks in transmitter or receiver, e.g. adaptive shaping networks
- H04L25/03006—Arrangements for removing intersymbol interference
- H04L2025/03433—Arrangements for removing intersymbol interference characterised by equaliser structure
- H04L2025/03439—Fixed structures
- H04L2025/03445—Time domain
- H04L2025/03471—Tapped delay lines
- H04L2025/03509—Tapped delay lines fractionally spaced
Landscapes
- Engineering & Computer Science (AREA)
- Computer Networks & Wireless Communication (AREA)
- Signal Processing (AREA)
- Cable Transmission Systems, Equalization Of Radio And Reduction Of Echo (AREA)
- Filters That Use Time-Delay Elements (AREA)
- Soil Working Implements (AREA)
- Agricultural Machines (AREA)
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US921513 | 1992-07-29 | ||
US09/921,513 US7012952B2 (en) | 2001-08-01 | 2001-08-01 | Method and apparatus for adjusting delay in systems with time-burst pilot and fractionally spaced equalizers |
PCT/US2002/024417 WO2003013088A2 (en) | 2001-08-01 | 2002-07-31 | Joint synchronization and modification of the coefficients of an adaptive equalizer for a cdma receiver |
Publications (2)
Publication Number | Publication Date |
---|---|
DE60222676D1 true DE60222676D1 (de) | 2007-11-08 |
DE60222676T2 DE60222676T2 (de) | 2008-06-12 |
Family
ID=25445543
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
DE60222676T Expired - Lifetime DE60222676T2 (de) | 2001-08-01 | 2002-07-31 | Gemeinsame synchronisation und modifikation der koeffizienten eines adaptiven entzerrers für einen cdma empfänger |
Country Status (10)
Country | Link |
---|---|
US (1) | US7012952B2 (de) |
EP (2) | EP1419627B1 (de) |
JP (1) | JP4494012B2 (de) |
KR (1) | KR100940134B1 (de) |
CN (1) | CN1555639B (de) |
AT (1) | ATE374486T1 (de) |
AU (1) | AU2002317610A1 (de) |
DE (1) | DE60222676T2 (de) |
TW (1) | TW569584B (de) |
WO (1) | WO2003013088A2 (de) |
Families Citing this family (17)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US20030142762A1 (en) * | 2002-01-11 | 2003-07-31 | Burke Joseph P. | Wireless receiver method and apparatus using space-cover-time equalization |
US7217678B2 (en) | 2002-08-22 | 2007-05-15 | E. I. Du Pont De Nemours And Company | Cobalt-substituted chromium oxide compositions, their preparation, and their use as catalysts and catalyst precursors |
TWI249292B (en) * | 2003-03-13 | 2006-02-11 | Interdigital Tech Corp | Wireless communication method and system for assigning multi-paths to rake receiver fingers |
US8064494B2 (en) * | 2003-05-28 | 2011-11-22 | Qualcomm Incorporated | Last finger polling for rake receivers |
US7437135B2 (en) * | 2003-10-30 | 2008-10-14 | Interdigital Technology Corporation | Joint channel equalizer interference canceller advanced receiver |
US7123944B2 (en) * | 2003-12-19 | 2006-10-17 | Samsung Electronics Co., Ltd. | Apparatus and method for controlling auxiliary pilot channel in a CDMA2000 wireless network |
US8126083B2 (en) * | 2004-04-09 | 2012-02-28 | Trident Microsystems (Far East) Ltd. | Apparatus for and method of controlling a sampling frequency of a sampling device |
GB0418133D0 (en) * | 2004-08-13 | 2004-09-15 | Ttp Communications Ltd | Sample acquisition timing adjustment |
CN100349447C (zh) * | 2004-08-16 | 2007-11-14 | 西安电子科技大学 | 用于流星余迹通信的数据均衡方法 |
CN100438490C (zh) * | 2004-08-27 | 2008-11-26 | 华为技术有限公司 | 基于统计平均的数据下发时间调整方法 |
US7924910B2 (en) * | 2005-01-04 | 2011-04-12 | Vitesse Semiconductor Corporation | Adaptive equalization with group delay |
US8594171B2 (en) * | 2006-12-14 | 2013-11-26 | Qualcomm Incorporated | Method and apparatus for operating a diversity receiver with an equalizer and a rake receiver |
US8098767B2 (en) * | 2007-12-20 | 2012-01-17 | Qualcomm Incorporated | Receiver adjustment between pilot bursts |
US8331421B2 (en) * | 2009-08-18 | 2012-12-11 | Broadcom Corporation | Method and system for a delay-locked loop for closely spaced multipath |
GB2474016B (en) * | 2009-09-25 | 2017-01-11 | Nvidia Tech Uk Ltd | A method and system for processing a signal |
EP2639781A1 (de) * | 2012-03-14 | 2013-09-18 | Honda Motor Co., Ltd. | Fahrzeug mit verbesserter Verkehrsobjektpositionserkennung |
US9264082B2 (en) * | 2012-06-11 | 2016-02-16 | Bae Systems Information And Electronic Systems Integration Inc. | System and algorithm for multipath mitigation |
Family Cites Families (11)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4901307A (en) | 1986-10-17 | 1990-02-13 | Qualcomm, Inc. | Spread spectrum multiple access communication system using satellite or terrestrial repeaters |
US5103459B1 (en) | 1990-06-25 | 1999-07-06 | Qualcomm Inc | System and method for generating signal waveforms in a cdma cellular telephone system |
US5285480A (en) | 1991-09-03 | 1994-02-08 | General Electric Company | Adaptive MLSE-VA receiver for digital cellular radio |
US5177740A (en) | 1991-09-03 | 1993-01-05 | General Electric Company | Frame/slot synchronization for U.S. digital cellular TDMA radio telephone system |
GB9317604D0 (en) * | 1993-08-24 | 1993-10-06 | Philips Electronics Uk Ltd | Receiver for ds-cdma signals |
US5838744A (en) * | 1996-10-22 | 1998-11-17 | Talx Corporation | High speed modem and method having jitter-free timing recovery |
US6345078B1 (en) * | 1997-07-31 | 2002-02-05 | Lucent Technologies Inc. | Finger assignment system for a multiple finger receiver and method thereof |
US6175588B1 (en) | 1997-12-30 | 2001-01-16 | Motorola, Inc. | Communication device and method for interference suppression using adaptive equalization in a spread spectrum communication system |
JP3930187B2 (ja) | 1999-03-03 | 2007-06-13 | 株式会社日立コミュニケーションテクノロジー | 同期制御方法、受信機、基地局及び移動端末 |
FI19991871A (fi) | 1999-09-02 | 2001-03-02 | Nokia Networks Oy | Menetelmä signaalikomponenttien käsittelemiseksi kommunikaatiojärjestelmässä ja vastanotin |
US7697594B2 (en) * | 2001-03-30 | 2010-04-13 | Texas Instruments Incorporated | Method and apparatus for regenerative based interference cancellation within a communication system |
-
2001
- 2001-08-01 US US09/921,513 patent/US7012952B2/en not_active Expired - Lifetime
-
2002
- 2002-07-31 CN CN028179064A patent/CN1555639B/zh not_active Expired - Fee Related
- 2002-07-31 DE DE60222676T patent/DE60222676T2/de not_active Expired - Lifetime
- 2002-07-31 KR KR1020047001470A patent/KR100940134B1/ko active IP Right Grant
- 2002-07-31 AU AU2002317610A patent/AU2002317610A1/en not_active Abandoned
- 2002-07-31 WO PCT/US2002/024417 patent/WO2003013088A2/en active IP Right Grant
- 2002-07-31 EP EP02748283A patent/EP1419627B1/de not_active Expired - Lifetime
- 2002-07-31 EP EP07012571A patent/EP1841157B1/de not_active Expired - Lifetime
- 2002-07-31 AT AT02748283T patent/ATE374486T1/de not_active IP Right Cessation
- 2002-07-31 JP JP2003518139A patent/JP4494012B2/ja not_active Expired - Lifetime
- 2002-08-01 TW TW091117300A patent/TW569584B/zh active
Also Published As
Publication number | Publication date |
---|---|
US20030026326A1 (en) | 2003-02-06 |
AU2002317610A1 (en) | 2003-02-17 |
WO2003013088A2 (en) | 2003-02-13 |
WO2003013088A3 (en) | 2004-03-11 |
EP1841157A3 (de) | 2008-06-11 |
EP1419627A2 (de) | 2004-05-19 |
ATE374486T1 (de) | 2007-10-15 |
TW569584B (en) | 2004-01-01 |
CN1555639A (zh) | 2004-12-15 |
US7012952B2 (en) | 2006-03-14 |
EP1841157B1 (de) | 2013-02-20 |
DE60222676T2 (de) | 2008-06-12 |
JP4494012B2 (ja) | 2010-06-30 |
KR20040018537A (ko) | 2004-03-03 |
EP1841157A2 (de) | 2007-10-03 |
EP1419627B1 (de) | 2007-09-26 |
JP2004537924A (ja) | 2004-12-16 |
KR100940134B1 (ko) | 2010-02-03 |
CN1555639B (zh) | 2013-01-09 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
8364 | No opposition during term of opposition |