CN1324522A - Cdma通信系统中用于多路径传播的自适应接收机 - Google Patents
Cdma通信系统中用于多路径传播的自适应接收机 Download PDFInfo
- Publication number
- CN1324522A CN1324522A CN99812500A CN99812500A CN1324522A CN 1324522 A CN1324522 A CN 1324522A CN 99812500 A CN99812500 A CN 99812500A CN 99812500 A CN99812500 A CN 99812500A CN 1324522 A CN1324522 A CN 1324522A
- Authority
- CN
- China
- Prior art keywords
- receiver
- filter
- signal
- channel
- coherence time
- 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.)
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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
- H04B1/7097—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
- H04B2201/70703—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
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L1/00—Arrangements for detecting or preventing errors in the information received
- H04L1/004—Arrangements for detecting or preventing errors in the information received by using forward error control
- H04L1/0045—Arrangements at the receiver end
- H04L1/0054—Maximum-likelihood or sequential decoding, e.g. Viterbi, Fano, ZJ algorithms
Landscapes
- Engineering & Computer Science (AREA)
- Computer Networks & Wireless Communication (AREA)
- Signal Processing (AREA)
- Mobile Radio Communication Systems (AREA)
- Radio Relay Systems (AREA)
- Time-Division Multiplex Systems (AREA)
- Structure Of Receivers (AREA)
- Transplanting Machines (AREA)
Abstract
Description
Claims (19)
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GBGB9818378.3A GB9818378D0 (en) | 1998-08-21 | 1998-08-21 | Receiver |
GB9818378.3 | 1998-08-21 |
Publications (2)
Publication Number | Publication Date |
---|---|
CN1324522A true CN1324522A (zh) | 2001-11-28 |
CN1117434C CN1117434C (zh) | 2003-08-06 |
Family
ID=10837705
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
CN99812500A Expired - Lifetime CN1117434C (zh) | 1998-08-21 | 1999-08-10 | Cdma通信系统中用于多路径传播的自适应接收机 |
Country Status (10)
Country | Link |
---|---|
US (1) | US6680967B1 (zh) |
EP (1) | EP1105977B1 (zh) |
JP (1) | JP2002523961A (zh) |
KR (1) | KR20010072840A (zh) |
CN (1) | CN1117434C (zh) |
AT (1) | ATE279815T1 (zh) |
AU (1) | AU5513599A (zh) |
DE (1) | DE69921155T2 (zh) |
GB (1) | GB9818378D0 (zh) |
WO (1) | WO2000011798A1 (zh) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN101682297B (zh) * | 2007-06-04 | 2012-06-27 | Nxp股份有限公司 | 包含频带选择的数字信号处理电路和方法 |
CN101707493B (zh) * | 2009-08-26 | 2012-09-26 | 南京邮电大学 | 多径信号载波相干解调瑞克接收机 |
Families Citing this family (42)
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FI19991871A (fi) * | 1999-09-02 | 2001-03-02 | Nokia Networks Oy | Menetelmä signaalikomponenttien käsittelemiseksi kommunikaatiojärjestelmässä ja vastanotin |
DE19961594B4 (de) * | 1999-12-21 | 2013-08-14 | Ipcom Gmbh & Co. Kg | Verfahren für die Übertragung von Datensignalen zwischen einer Sendestation und mehreren Empfangsstationen, Sendestation und Empfangsstation |
JP2001257627A (ja) * | 2000-03-13 | 2001-09-21 | Kawasaki Steel Corp | 無線受信機 |
FI118877B (fi) * | 2000-06-19 | 2008-04-15 | Valtion Teknillinen | Liiketilan estimointi |
US7065130B1 (en) * | 2000-10-02 | 2006-06-20 | Telefonaktiebolaget Lm Ericsson (Publ) | Searching for signals in a communications system |
CN1140075C (zh) * | 2000-12-18 | 2004-02-25 | 信息产业部电信传输研究所 | 基于多径能量窗的码分多址系统初始同步与小区搜索装置 |
US6922452B2 (en) * | 2001-03-27 | 2005-07-26 | Telefonaktiebolaget L M Ericsson (Publ) | Method and apparatus for estimating Doppler spread |
US20020176485A1 (en) * | 2001-04-03 | 2002-11-28 | Hudson John E. | Multi-cast communication system and method of estimating channel impulse responses therein |
KR100393192B1 (ko) * | 2001-07-11 | 2003-07-31 | 삼성전자주식회사 | 시변 채널에 적합한 신호 수신 장치 및 방법 |
DE60137574D1 (de) * | 2001-09-25 | 2009-03-19 | St Microelectronics Nv | Verfahren und Vorrichtung zur Geschwindigkeitsschätzung eines Mobilendgerätes insbesondere zellulares Mobiltelefon mit UMTS Fähigkeit |
GB0126130D0 (en) * | 2001-10-31 | 2002-01-02 | Nokia Corp | Frequency error estimation |
US7164649B2 (en) * | 2001-11-02 | 2007-01-16 | Qualcomm, Incorporated | Adaptive rate control for OFDM communication system |
US7209433B2 (en) * | 2002-01-07 | 2007-04-24 | Hitachi, Ltd. | Channel estimation and compensation techniques for use in frequency division multiplexed systems |
US7263349B2 (en) | 2002-03-12 | 2007-08-28 | Qualcomm Incorporated | Velocity responsive time tracking |
CN100417039C (zh) * | 2002-05-06 | 2008-09-03 | 美商威睿电通公司 | 透过控制停持状态至活跃状态的转换过程以减少码分多重存取行动台消耗功率的方法与装置 |
JP3961907B2 (ja) * | 2002-08-23 | 2007-08-22 | 富士通株式会社 | フェージング周波数推定装置 |
TW579636B (en) * | 2002-10-25 | 2004-03-11 | Benq Corp | Method and system for estimating movement speed of mobile phone |
US7286481B2 (en) * | 2002-12-17 | 2007-10-23 | Intel Corporation | Wireless network adapted to transmit channel side information and method thereof |
US20040125865A1 (en) * | 2002-12-30 | 2004-07-01 | Frank Colin D. | Maximum signal-to-interference-and-noise spread spectrum rake receiver and method |
WO2004068749A1 (ja) * | 2003-01-30 | 2004-08-12 | Fujitsu Limited | フェ−ジング周波数推定装置 |
US7301990B2 (en) * | 2003-02-21 | 2007-11-27 | Qualcomm Incorporated | Equalization of multiple signals received for soft handoff in wireless communication systems |
DE10322943B4 (de) * | 2003-05-21 | 2005-10-06 | Infineon Technologies Ag | Hardware-Vorrichtung zur Aufbereitung von Pilotsymbolen für eine Kanalschätzung mittels adaptiver Tiefpassfilterung |
US7869488B2 (en) * | 2003-08-28 | 2011-01-11 | Qualcomm Incorporated | Method and apparatus for removing code aliases when using short synchronization codes |
US20050047491A1 (en) * | 2003-08-28 | 2005-03-03 | Haitao Zhang | Method and apparatus for improving channel estimate based on short synchronization code |
EP2378808B1 (en) * | 2003-09-04 | 2012-12-05 | Fujitsu Limited | Communication apparatus |
KR100712323B1 (ko) * | 2003-10-02 | 2007-05-02 | 삼성전자주식회사 | 패킷 통신 시스템에서 빠른 전송율 변화를 지원하는 역방향 전송율 스케쥴링 방법 및 장치 |
US7903617B2 (en) * | 2003-12-03 | 2011-03-08 | Ruey-Wen Liu | Method and system for multiuser wireless communications using anti-interference to increase transmission data rate |
US20050193315A1 (en) * | 2004-02-18 | 2005-09-01 | Massimo Bertinelli | Method and apparatus for performing a TFCI reliability check in E-DCH |
JP4744965B2 (ja) * | 2004-08-09 | 2011-08-10 | パナソニック株式会社 | 無線通信装置 |
US8503328B2 (en) * | 2004-09-01 | 2013-08-06 | Qualcomm Incorporated | Methods and apparatus for transmission of configuration information in a wireless communication network |
US7372895B2 (en) * | 2004-12-08 | 2008-05-13 | Telefonaktiebolaget Lm Ericsson (Publ) | Method of and system for delay estimation with minimized finger allocation |
US7610025B2 (en) * | 2005-03-29 | 2009-10-27 | Qualcomm Incorporated | Antenna array pattern distortion mitigation |
US7917798B2 (en) | 2005-10-04 | 2011-03-29 | Hypres, Inc. | Superconducting digital phase rotator |
GB0601952D0 (en) * | 2006-01-31 | 2006-03-15 | M M I Res Ltd | Methods of maintaining connection with, and determining the direction of, a mobile device |
EP2122844B1 (en) * | 2007-03-06 | 2012-10-17 | ST-Ericsson SA | Improvements in or relating to cdma receivers and cdma communications systems |
FR2943193B1 (fr) * | 2009-03-13 | 2011-04-01 | St Ericsson Sa | Procede d'affectation et de liberation d'un correlateur dans un recepteur de type rake et recepteur pour la mise en oeuvre du procede |
FR2943192B1 (fr) * | 2009-03-13 | 2011-06-03 | St Wireless Sa | Procede d'affectation d'un doigt (finger) pour un recepteur de type rateau (rake) en mode de veille,et dispositif pour la mise en oeuvre du procede |
US8559887B2 (en) * | 2009-07-09 | 2013-10-15 | Cisco Technology, Inc. | Coherence time estimation and mobility detection for wireless channel |
US8606254B2 (en) | 2009-10-30 | 2013-12-10 | Blackberry Limited | Method and system for receiver adaptation based on knowledge of wireless propagation environments |
US8737457B2 (en) | 2012-09-28 | 2014-05-27 | Telefonaktiebolaget L M Ericsson (Publ) | Adaptive smoothing of channel estimates |
US8737550B1 (en) | 2012-12-04 | 2014-05-27 | Telefonaktiebolaget L M Ericsson (Publ) | Estimating optimal linear regression filter length for channel estimation |
US10715288B2 (en) * | 2016-05-10 | 2020-07-14 | Apple Inc. | Wireless local area network sounding protocol |
Family Cites Families (14)
Publication number | Priority date | Publication date | Assignee | Title |
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DE69129768T2 (de) | 1990-03-30 | 1999-02-25 | Nec Corp., Tokio/Tokyo | Störungsunempfindlicher Raumdiversityempfänger |
JP3100447B2 (ja) * | 1992-01-10 | 2000-10-16 | 三菱電機株式会社 | 適応等化器および受信機 |
GB9315845D0 (en) * | 1993-07-30 | 1993-09-15 | Roke Manor Research | Apparatus for use in equipment providing a digital radio link between a fixed and a mobile radio unit |
US5544156A (en) * | 1994-04-29 | 1996-08-06 | Telefonaktiebolaget Lm Ericsson | Direct sequence CDMA coherent uplink detector |
EP0715440B1 (en) * | 1994-06-22 | 2004-06-16 | NTT DoCoMo, Inc. | Synchronous detector and synchronizing method for digital communication receiver |
FI943249A (fi) | 1994-07-07 | 1996-01-08 | Nokia Mobile Phones Ltd | Menetelmä vastaanottimen ohjaamiseksi ja vastaanotin |
FI110731B (fi) | 1994-09-12 | 2003-03-14 | Nokia Corp | Menetelmä kanavan estimoimiseksi ja vastaanotin |
US5697084A (en) * | 1994-09-16 | 1997-12-09 | Bose Corporation | Reducing multipath fading using adaptive filtering |
US5619524A (en) * | 1994-10-04 | 1997-04-08 | Motorola, Inc. | Method and apparatus for coherent communication reception in a spread-spectrum communication system |
US6263307B1 (en) * | 1995-04-19 | 2001-07-17 | Texas Instruments Incorporated | Adaptive weiner filtering using line spectral frequencies |
US5584295A (en) * | 1995-09-01 | 1996-12-17 | Analogic Corporation | System for measuring the period of a quasi-periodic signal |
US5757846A (en) * | 1996-08-30 | 1998-05-26 | Vasudevan; Subramanian | CDMA communication system and method with dual-mode receiver |
WO1998011750A2 (en) | 1996-09-11 | 1998-03-19 | Yang Li | Method of using fingerprints to authenticate wireless communications |
US6067315A (en) * | 1997-12-04 | 2000-05-23 | Telefonaktiebolaget Lm Ericsson | Method and apparatus for coherently-averaged power estimation |
-
1998
- 1998-08-21 GB GBGB9818378.3A patent/GB9818378D0/en not_active Ceased
-
1999
- 1999-08-10 WO PCT/EP1999/005827 patent/WO2000011798A1/en active IP Right Grant
- 1999-08-10 KR KR1020017002231A patent/KR20010072840A/ko not_active Application Discontinuation
- 1999-08-10 JP JP2000566959A patent/JP2002523961A/ja active Pending
- 1999-08-10 DE DE69921155T patent/DE69921155T2/de not_active Expired - Lifetime
- 1999-08-10 EP EP99941569A patent/EP1105977B1/en not_active Expired - Lifetime
- 1999-08-10 AT AT99941569T patent/ATE279815T1/de not_active IP Right Cessation
- 1999-08-10 AU AU55135/99A patent/AU5513599A/en not_active Abandoned
- 1999-08-10 CN CN99812500A patent/CN1117434C/zh not_active Expired - Lifetime
- 1999-08-19 US US09/377,570 patent/US6680967B1/en not_active Expired - Lifetime
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN101682297B (zh) * | 2007-06-04 | 2012-06-27 | Nxp股份有限公司 | 包含频带选择的数字信号处理电路和方法 |
CN101707493B (zh) * | 2009-08-26 | 2012-09-26 | 南京邮电大学 | 多径信号载波相干解调瑞克接收机 |
Also Published As
Publication number | Publication date |
---|---|
EP1105977B1 (en) | 2004-10-13 |
DE69921155D1 (de) | 2004-11-18 |
KR20010072840A (ko) | 2001-07-31 |
GB9818378D0 (en) | 1998-10-21 |
ATE279815T1 (de) | 2004-10-15 |
WO2000011798A1 (en) | 2000-03-02 |
DE69921155T2 (de) | 2006-02-23 |
US6680967B1 (en) | 2004-01-20 |
CN1117434C (zh) | 2003-08-06 |
JP2002523961A (ja) | 2002-07-30 |
EP1105977A1 (en) | 2001-06-13 |
AU5513599A (en) | 2000-03-14 |
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Legal Events
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C06 | Publication | ||
PB01 | Publication | ||
C10 | Entry into substantive examination | ||
SE01 | Entry into force of request for substantive examination | ||
C14 | Grant of patent or utility model | ||
GR01 | Patent grant | ||
C41 | Transfer of patent application or patent right or utility model | ||
TR01 | Transfer of patent right |
Effective date of registration: 20170117 Address after: Espoo, Finland Patentee after: NOKIA TECHNOLOGIES OY Address before: Espoo, Finland Patentee before: Nokia Corp. Effective date of registration: 20170117 Address after: Espoo, Finland Patentee after: NOKIA Corp. Address before: Espoo, Finland Patentee before: NOKIA MOBILE PHONES Ltd. |
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CX01 | Expiry of patent term |
Granted publication date: 20030806 |
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CX01 | Expiry of patent term |