DE69903926D1 - Verfahren für asynchrone zellulare cdma-übertragung - Google Patents
Verfahren für asynchrone zellulare cdma-übertragungInfo
- Publication number
- DE69903926D1 DE69903926D1 DE69903926T DE69903926T DE69903926D1 DE 69903926 D1 DE69903926 D1 DE 69903926D1 DE 69903926 T DE69903926 T DE 69903926T DE 69903926 T DE69903926 T DE 69903926T DE 69903926 D1 DE69903926 D1 DE 69903926D1
- Authority
- DE
- Germany
- Prior art keywords
- procedure
- cdma transmission
- cellular cdma
- asynchronous cellular
- asynchronous
- 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
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W52/00—Power management, e.g. TPC [Transmission Power Control], power saving or power classes
- H04W52/04—TPC
- H04W52/38—TPC being performed in particular situations
- H04W52/42—TPC being performed in particular situations in systems with time, space, frequency or polarisation diversity
-
- 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
-
- 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
- H04B7/00—Radio transmission systems, i.e. using radiation field
- H04B7/02—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas
- H04B7/04—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas
- H04B7/08—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas at the receiving station
- H04B7/0837—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas at the receiving station using pre-detection combining
- H04B7/0842—Weighted combining
- H04B7/0848—Joint weighting
- H04B7/0851—Joint weighting using training sequences or error signal
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B7/00—Radio transmission systems, i.e. using radiation field
- H04B7/24—Radio transmission systems, i.e. using radiation field for communication between two or more posts
- H04B7/26—Radio transmission systems, i.e. using radiation field for communication between two or more posts at least one of which is mobile
- H04B7/2628—Radio transmission systems, i.e. using radiation field for communication between two or more posts at least one of which is mobile using code-division multiple access [CDMA] or spread spectrum multiple access [SSMA]
- H04B7/2631—Radio transmission systems, i.e. using radiation field for communication between two or more posts at least one of which is mobile using code-division multiple access [CDMA] or spread spectrum multiple access [SSMA] for broadband transmission
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04J—MULTIPLEX COMMUNICATION
- H04J3/00—Time-division multiplex systems
- H04J3/02—Details
- H04J3/06—Synchronising arrangements
- H04J3/0602—Systems characterised by the synchronising information used
-
- 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
Landscapes
- Engineering & Computer Science (AREA)
- Computer Networks & Wireless Communication (AREA)
- Signal Processing (AREA)
- Mobile Radio Communication Systems (AREA)
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US09/015,424 US6208632B1 (en) | 1998-01-29 | 1998-01-29 | System and method for CDMA channel estimation |
PCT/JP1999/000327 WO1999039452A1 (en) | 1998-01-29 | 1999-01-27 | System and method for asynchronous cdma cellular communication |
Publications (2)
Publication Number | Publication Date |
---|---|
DE69903926D1 true DE69903926D1 (de) | 2002-12-19 |
DE69903926T2 DE69903926T2 (de) | 2003-09-04 |
Family
ID=21771335
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
DE69903926T Expired - Lifetime DE69903926T2 (de) | 1998-01-29 | 1999-01-27 | Verfahren für asynchrone zellulare cdma-übertragung |
Country Status (5)
Country | Link |
---|---|
US (1) | US6208632B1 (de) |
EP (1) | EP1057279B1 (de) |
JP (1) | JP3483852B2 (de) |
DE (1) | DE69903926T2 (de) |
WO (1) | WO1999039452A1 (de) |
Families Citing this family (57)
Publication number | Priority date | Publication date | Assignee | Title |
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JP3441636B2 (ja) * | 1997-11-21 | 2003-09-02 | 株式会社エヌ・ティ・ティ・ドコモ | チャネル推定値を求める装置および方法、受信装置ならびに伝送システム |
US6754251B1 (en) * | 1998-03-09 | 2004-06-22 | Texas Instruments Incorporated | Spread-spectrum telephony with accelerated code acquisition |
JP3768350B2 (ja) * | 1998-03-30 | 2006-04-19 | 松下電器産業株式会社 | 無線受信装置及びその方法 |
JP3028800B2 (ja) * | 1998-05-01 | 2000-04-04 | 日本電気株式会社 | Cdmaセルラシステム及びcdmaセルラシステムにおける拡散符号検出方法 |
JP3286247B2 (ja) * | 1998-05-08 | 2002-05-27 | 松下電器産業株式会社 | 無線通信システム |
US6879575B1 (en) | 1998-05-13 | 2005-04-12 | Hitachi, Ltd. | Code division multiple access mobile communication system |
JPH11331036A (ja) * | 1998-05-13 | 1999-11-30 | Hitachi Ltd | 符号分割接続方式移動通信システム及び該システムで用いるスロットタイミング同定方法と移動端末 |
FR2782587B1 (fr) * | 1998-08-20 | 2000-09-22 | France Telecom | Procedes de communications numeriques amrc a repartition des symboles de reference |
JP3257522B2 (ja) * | 1998-10-06 | 2002-02-18 | 日本電気株式会社 | 移動通信端末機 |
US6587517B1 (en) * | 1998-12-23 | 2003-07-01 | Nortel Networks Limited | Multi-stage receiver |
US6507602B1 (en) * | 1999-01-07 | 2003-01-14 | Ericsson, Inc. | Smoothing receiver channel estimates using spectral estimation |
US6377609B1 (en) * | 1999-03-05 | 2002-04-23 | Neptune Technology Group Inc. | Spread spectrum frequency hopping system and method |
US6831929B1 (en) * | 1999-03-22 | 2004-12-14 | Texas Instruments Incorporated | Multistage PN code aquisition circuit and method |
US6452917B1 (en) * | 1999-04-08 | 2002-09-17 | Qualcomm Incorporated | Channel estimation in a CDMA wireless communication system |
JP3367475B2 (ja) * | 1999-07-06 | 2003-01-14 | 日本電気株式会社 | 無線通信機および無線通信機の消費電力制御方法 |
JP3695571B2 (ja) * | 1999-07-21 | 2005-09-14 | 株式会社エヌ・ティ・ティ・ドコモ | Cdma移動通信システムにおけるcdma受信装置および受信信号電力測定方法 |
JP3677185B2 (ja) * | 1999-11-29 | 2005-07-27 | 株式会社東芝 | 符号分割多重伝送方式と送信装置及び受信装置 |
ATE320120T1 (de) * | 1999-12-01 | 2006-03-15 | Bitfehlerratenschätzung von pilotsignalen | |
CN100385833C (zh) * | 1999-12-28 | 2008-04-30 | 株式会社Ntt都科摩 | 路径搜索方法与信道估计方法以及通信装置 |
US6301291B1 (en) | 2000-02-03 | 2001-10-09 | Tantivy Communications, Inc. | Pilot symbol assisted modulation and demodulation in wireless communication systems |
EP1133077A1 (de) * | 2000-03-10 | 2001-09-12 | Mitsubishi Electric Information Technology Centre Europe B.V. | Verfahren zur Synchronisation von Basisstationen und eine Mobilstation in einem zellularen Kommunikationssystem |
JP2001326586A (ja) | 2000-05-17 | 2001-11-22 | Nec Corp | Cdma通信システム及びそれに用いるチャネル推定方法 |
JP2001339758A (ja) * | 2000-05-26 | 2001-12-07 | Matsushita Electric Ind Co Ltd | 無線基地局装置及び無線通信方法 |
EP1296474A4 (de) * | 2000-06-15 | 2005-01-26 | Sanyo Electric Co | Empfangsvorrichtung und empfangsverfahren |
GB2366970A (en) * | 2000-09-14 | 2002-03-20 | Ubinetics Ltd | Rake receiver |
US6980539B2 (en) * | 2000-11-06 | 2005-12-27 | Ntt Docomo, Inc. | Mobile communication system in multi-carrier CDMA scheme using short code and long code |
AU2002217057A1 (en) * | 2000-11-27 | 2002-06-03 | Telefonaktiebolaget Lm Ericsson (Publ) | Code synchronization in a mobile communication device |
RU2192709C2 (ru) * | 2000-11-30 | 2002-11-10 | Гармонов Александр Васильевич | Способ приема многолучевых сигналов в системе радиосвязи с кодовым разделением каналов и устройство для его реализации |
US7010073B2 (en) | 2001-01-19 | 2006-03-07 | Qualcomm, Incorporated | Delay lock loops for wireless communication systems |
DE10122689C2 (de) * | 2001-05-10 | 2003-04-30 | Siemens Ag | Verfahren zur Kanalschätzung eines Mobilfunkkanals und Mobilfunk-Empfangsgerät |
DE60107932T2 (de) * | 2001-05-29 | 2005-12-08 | Lucent Technologies Inc. | Verfahren zur Verbesserung des Empfangs eines CDMA-Empfängers und CDMA-Empfänger dazu |
KR100803115B1 (ko) * | 2001-06-07 | 2008-02-14 | 엘지전자 주식회사 | 적응 안테나 어레이가 구비된 wcdma 시스템에서의 신호 처리 방법 이를 위한 시스템 |
US6785250B2 (en) * | 2001-07-09 | 2004-08-31 | Qualcomm Incorporated | Method and apparatus for time-sharing channelization code in a CDMA communication system |
TWI222814B (en) | 2001-08-14 | 2004-10-21 | Flarion Technologies Inc | Methods and apparatus for wireless network connectivity |
US7236514B2 (en) | 2001-10-01 | 2007-06-26 | Ericsson, Inc. | Communications methods, apparatus and computer program products using gain multipliers |
KR100444730B1 (ko) * | 2001-12-24 | 2004-08-16 | 한국전자통신연구원 | 광대역 부호 분할 다중 접속 시스템용 기지국의 복조 장치및 방법 |
KR100444732B1 (ko) * | 2001-12-24 | 2004-08-16 | 한국전자통신연구원 | 부호 분할 다중 접속 시스템용 기지국 복조기에서의 칩연산 장치 및 그 방법과, 그 장치를 사용한 기지국 복조기 |
US7173990B2 (en) * | 2001-12-27 | 2007-02-06 | Dsp Group Inc. | Joint equalization, soft-demapping and phase error correction in wireless system with receive diversity |
US7245598B2 (en) * | 2002-02-21 | 2007-07-17 | Qualcomm Incorporated | Feedback of channel quality information |
US7986672B2 (en) * | 2002-02-25 | 2011-07-26 | Qualcomm Incorporated | Method and apparatus for channel quality feedback in a wireless communication |
US7342912B1 (en) * | 2002-06-28 | 2008-03-11 | Arraycomm, Llc. | Selection of user-specific transmission parameters for optimization of transmit performance in wireless communications using a common pilot channel |
US6714286B1 (en) * | 2002-12-06 | 2004-03-30 | Itt Manufacturing Enterprises, Inc. | Agile pseudo-noise coded ranging ladar |
US7390032B2 (en) * | 2003-08-01 | 2008-06-24 | Sonstone Corporation | Tubing joint of multiple orientations containing electrical wiring |
US7226090B2 (en) * | 2003-08-01 | 2007-06-05 | Sunstone Corporation | Rod and tubing joint of multiple orientations containing electrical wiring |
DE10337445B3 (de) * | 2003-08-14 | 2005-06-30 | Siemens Ag | Verfahren zum Betrieb eines Funkkommunikationssystems, Empfangsstation sowie Sendestation für ein Funkkommunkationssystem |
US6985535B2 (en) * | 2003-10-31 | 2006-01-10 | Motorola, Inc. | Channel condition estimation for pilot coefficient selection |
KR100630170B1 (ko) * | 2004-09-17 | 2006-09-29 | 삼성전자주식회사 | 비동기 이동통신 시스템에서 단말기의 셀 별 복조 타이밍 관리 방법 및 장치 |
US20060067383A1 (en) * | 2004-09-29 | 2006-03-30 | Carmela Cozzo | Parameter estimate initialization using interpolation |
US8254306B2 (en) * | 2004-10-06 | 2012-08-28 | Broadcom Corporation | Method and system for implementing a single weight spatial multiplexing (SM) MIMO system |
US8023554B2 (en) | 2004-10-06 | 2011-09-20 | Broadcom Corporation | Method and system for single antenna receiver system for WCDMA |
US8406251B2 (en) | 2004-10-06 | 2013-03-26 | Broadcom Corporation | Method and system for processing multipath clusters |
US7499452B2 (en) * | 2004-12-28 | 2009-03-03 | International Business Machines Corporation | Self-healing link sequence counts within a circular buffer |
US7640040B2 (en) * | 2005-08-22 | 2009-12-29 | Kyocera Corporation | Systems and methods for tuning an antenna configuration in a mobile communication device |
JP4684068B2 (ja) * | 2005-09-29 | 2011-05-18 | 京セラ株式会社 | 無線受信装置及び無線受信方法 |
EP1941630A2 (de) * | 2005-10-28 | 2008-07-09 | Nokia Corporation | Vorrichtung, verfahren und computerprogrammprodukt zur bereitstellung von zentralkanal-anordnungen für soft-frequenz-wiederverwendung |
US7680075B2 (en) * | 2006-05-17 | 2010-03-16 | Alcatel-Lucent Usa Inc. | Identification of base stations |
EP2232724B1 (de) * | 2008-01-18 | 2014-10-15 | Telefonaktiebolaget LM Ericsson (publ) | Verfahren und einrichtung für verbessertes scheduling |
Family Cites Families (19)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5109390A (en) | 1989-11-07 | 1992-04-28 | Qualcomm Incorporated | Diversity receiver in a cdma cellular telephone system |
EP0620658B1 (de) | 1992-11-04 | 2001-12-19 | Ntt Mobile Communications Network Inc. | Mobiles kommunikationssystem mit kodemultiplexvielfachzugriff |
US5329547A (en) | 1993-03-11 | 1994-07-12 | Motorola, Inc. | Method and apparatus for coherent communication in a spread-spectrum communication system |
DE69431287T2 (de) | 1993-06-14 | 2003-05-15 | Telefonaktiebolaget Lm Ericsson, Stockholm | Übertragungszeitjustierung in der abwärtsverbindung eines systems mit kodemultiplex-vielfachzugriff |
DE69431970T2 (de) | 1993-10-14 | 2003-08-28 | Ntt Docomo Inc., Tokio/Tokyo | Korrelationsdetektor und Nachrichtengerät |
JP3003839B2 (ja) | 1993-11-08 | 2000-01-31 | エヌ・ティ・ティ移動通信網株式会社 | Cdma通信方法および装置 |
JP3305877B2 (ja) * | 1994-06-23 | 2002-07-24 | 株式会社東芝 | スペクトラム拡散無線通信システムおよびこのシステムで使用される無線通信装置 |
JP2655092B2 (ja) | 1994-08-11 | 1997-09-17 | 日本電気株式会社 | 符号分割多重式受信機 |
US5619524A (en) | 1994-10-04 | 1997-04-08 | Motorola, Inc. | Method and apparatus for coherent communication reception in a spread-spectrum communication system |
US5822359A (en) * | 1994-10-17 | 1998-10-13 | Motorola, Inc. | Coherent random access channel in a spread-spectrum communication system and method |
US5627855A (en) * | 1995-05-25 | 1997-05-06 | Golden Bridge Technology, Inc. | Programmable two-part matched filter for spread spectrum |
CN1080047C (zh) | 1996-03-05 | 2002-02-27 | Ntt移动通信网株式会社 | 移动通信系统中的信号传输方法,发射机,接收机和扩展码同步法 |
JPH09307951A (ja) | 1996-03-15 | 1997-11-28 | Matsushita Electric Ind Co Ltd | スペクトル拡散通信装置 |
KR0173904B1 (ko) * | 1996-04-04 | 1999-04-01 | 서정욱 | 직접 확산 부호 분할 다중 접속 시스템용 레이크수신장치 |
JP2751959B2 (ja) * | 1996-07-15 | 1998-05-18 | 日本電気株式会社 | Cdma受信装置の受信タイミング検出回路 |
US6026115A (en) * | 1996-08-23 | 2000-02-15 | Ntt Mobile Communications Network, Inc. | Rake receiver |
US5950131A (en) * | 1996-10-29 | 1999-09-07 | Motorola, Inc. | Method and apparatus for fast pilot channel acquisition using a matched filter in a CDMA radiotelephone |
US6055231A (en) * | 1997-03-12 | 2000-04-25 | Interdigital Technology Corporation | Continuously adjusted-bandwidth discrete-time phase-locked loop |
US5991330A (en) * | 1997-06-27 | 1999-11-23 | Telefonaktiebolaget L M Ericsson (Pub1) | Mobile Station synchronization within a spread spectrum communication systems |
-
1998
- 1998-01-29 US US09/015,424 patent/US6208632B1/en not_active Expired - Lifetime
-
1999
- 1999-01-27 DE DE69903926T patent/DE69903926T2/de not_active Expired - Lifetime
- 1999-01-27 JP JP2000529802A patent/JP3483852B2/ja not_active Expired - Fee Related
- 1999-01-27 EP EP99901187A patent/EP1057279B1/de not_active Expired - Lifetime
- 1999-01-27 WO PCT/JP1999/000327 patent/WO1999039452A1/en active IP Right Grant
Also Published As
Publication number | Publication date |
---|---|
EP1057279A1 (de) | 2000-12-06 |
JP3483852B2 (ja) | 2004-01-06 |
EP1057279B1 (de) | 2002-11-13 |
DE69903926T2 (de) | 2003-09-04 |
US6208632B1 (en) | 2001-03-27 |
WO1999039452A1 (en) | 1999-08-05 |
JP2002502180A (ja) | 2002-01-22 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
8364 | No opposition during term of opposition |