CN1166727A - 确定cdma无线电接收机中加权系数的方法 - Google Patents
确定cdma无线电接收机中加权系数的方法 Download PDFInfo
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- CN1166727A CN1166727A CN97103318A CN97103318A CN1166727A CN 1166727 A CN1166727 A CN 1166727A CN 97103318 A CN97103318 A CN 97103318A CN 97103318 A CN97103318 A CN 97103318A CN 1166727 A CN1166727 A CN 1166727A
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- 238000000034 method Methods 0.000 title claims abstract description 41
- 230000005611 electricity Effects 0.000 claims description 9
- 230000009467 reduction Effects 0.000 claims description 4
- 238000004891 communication Methods 0.000 description 23
- 230000001413 cellular effect Effects 0.000 description 15
- 238000001228 spectrum Methods 0.000 description 12
- 238000005457 optimization Methods 0.000 description 7
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Images
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
- H04B1/712—Weighting of fingers for combining, e.g. amplitude control or phase rotation using an inner loop
-
- 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
- H04L1/02—Arrangements for detecting or preventing errors in the information received by diversity reception
- H04L1/06—Arrangements for detecting or preventing errors in the information received by diversity reception using space diversity
-
- 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
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- Engineering & Computer Science (AREA)
- Computer Networks & Wireless Communication (AREA)
- Signal Processing (AREA)
- Mobile Radio Communication Systems (AREA)
Abstract
Description
Claims (10)
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US08/617,462 | 1996-03-18 | ||
US08/617,462 US5812542A (en) | 1996-03-18 | 1996-03-18 | Method for determining weighting coefficients in a CDMA radio receiver |
US08/617462 | 1996-03-18 |
Publications (2)
Publication Number | Publication Date |
---|---|
CN1166727A true CN1166727A (zh) | 1997-12-03 |
CN1081408C CN1081408C (zh) | 2002-03-20 |
Family
ID=24473747
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
CN97103318A Expired - Lifetime CN1081408C (zh) | 1996-03-18 | 1997-03-17 | 确定cdma无线电接收机中加权系数的方法 |
Country Status (6)
Country | Link |
---|---|
US (1) | US5812542A (zh) |
JP (1) | JP4210350B2 (zh) |
KR (1) | KR100251334B1 (zh) |
CN (1) | CN1081408C (zh) |
FR (1) | FR2746233B1 (zh) |
GB (1) | GB2311445B (zh) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN100385812C (zh) * | 1998-05-29 | 2008-04-30 | 艾利森电话股份有限公司 | 使用周期性插入导频符号的多径传播延迟确定装置 |
CN1881832B (zh) * | 1999-09-10 | 2011-12-14 | 美商内数位科技公司 | Cdma通信系统中使用天线阵列的传输 |
Families Citing this family (54)
Publication number | Priority date | Publication date | Assignee | Title |
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ZA965340B (en) | 1995-06-30 | 1997-01-27 | Interdigital Tech Corp | Code division multiple access (cdma) communication system |
JP2820918B2 (ja) * | 1996-03-08 | 1998-11-05 | 株式会社ワイ・アール・ピー移動通信基盤技術研究所 | スペクトル拡散通信装置 |
US5799011A (en) * | 1996-03-29 | 1998-08-25 | Motorola, Inc. | CDMA power control channel estimation using dynamic coefficient scaling |
IL120574A (en) * | 1996-05-17 | 2002-09-12 | Motorala Ltd | Methods and devices for transmitter track weights |
GB2313256B (en) * | 1996-05-17 | 2000-08-23 | Motorola Ltd | Method and apparatus for system selection |
GB9625094D0 (en) * | 1996-12-03 | 1997-01-22 | Ensigma Ltd | Apparatus and methods for measuring coarse frequency offset of a multi-carrier signal |
JPH10190526A (ja) * | 1996-12-26 | 1998-07-21 | Sony Corp | 受信装置及び受信方法、並びに無線システムの端末装置 |
US6275484B1 (en) * | 1997-06-23 | 2001-08-14 | Lucent Technologies Inc. | Methods and apparatus for increasing the uplink gain for a CDMA base station |
US6038263A (en) * | 1997-07-31 | 2000-03-14 | Motorola, Inc. | Method and apparatus for transmitting signals in a communication system |
US6185258B1 (en) | 1997-09-16 | 2001-02-06 | At&T Wireless Services Inc. | Transmitter diversity technique for wireless communications |
US5946346A (en) * | 1997-10-07 | 1999-08-31 | Motorola, Inc. | Method and system for generating a power control command in a wireless communication system |
DE69833780T2 (de) | 1997-10-31 | 2006-08-17 | Cingular Wireless Ii Llc. | Maximal-wahrscheinlichkeitsdetektion von verketteten raum/zeit kodes für schnurlose anwendungen mit sender-diversity |
US5936569A (en) * | 1997-12-02 | 1999-08-10 | Nokia Telecommunications Oy | Method and arrangement for adjusting antenna pattern |
US6188736B1 (en) | 1997-12-23 | 2001-02-13 | At&T Wireless Svcs. Inc. | Near-optimal low-complexity decoding of space-time codes for fixed wireless applications |
EP1445875B1 (en) * | 1997-12-23 | 2009-04-08 | AT&T Mobility II LLC | Near-optimal low-complexity decoding of space-time codes for wireless applications |
JP3406831B2 (ja) * | 1998-03-19 | 2003-05-19 | 富士通株式会社 | 無線基地局のアレーアンテナシステム |
US6085104A (en) * | 1998-03-25 | 2000-07-04 | Sharp Laboratories Of America, Inc. | Pilot aided, time-varying finite impulse response, adaptive channel matching receiving system and method |
US6067324A (en) * | 1998-06-30 | 2000-05-23 | Motorola, Inc. | Method and system for transmitting and demodulating a communications signal using an adaptive antenna array in a wireless communication system |
US6370133B1 (en) * | 1998-07-10 | 2002-04-09 | Hyundai Electronics America, Inc. | CDMA receiver and method of operation |
US6658050B1 (en) * | 1998-09-11 | 2003-12-02 | Ericsson Inc. | Channel estimates in a CDMA system using power control bits |
FI106897B (fi) | 1998-09-14 | 2001-04-30 | Nokia Networks Oy | RAKE-vastaanotin |
US6459740B1 (en) | 1998-09-17 | 2002-10-01 | At&T Wireless Services, Inc. | Maximum ratio transmission |
JP3031354B1 (ja) * | 1998-09-30 | 2000-04-10 | 日本電気株式会社 | Cdma受信装置及びそのマルチパスのフィンガ割り当て方法並びにその制御プログラムを記録した記録媒体 |
US6128330A (en) | 1998-11-24 | 2000-10-03 | Linex Technology, Inc. | Efficient shadow reduction antenna system for spread spectrum |
US6931050B1 (en) * | 1998-12-03 | 2005-08-16 | Ericsson Inc. | Digital receivers and receiving methods that scale for relative strengths of traffic and pilot channels during soft handoff |
DE19856401A1 (de) * | 1998-12-07 | 2000-06-15 | Siemens Ag | Verfahren zur Datenübertragung in einem Mobilfunksystem, Mobilstation und Basisstation |
US6219344B1 (en) * | 1999-04-21 | 2001-04-17 | Infineon Technologies Ag | Pilot aided traffic channel estimation for CDMA cellular systems |
US6714585B1 (en) | 1999-06-25 | 2004-03-30 | Ericsson Inc. | Rake combining methods and apparatus using weighting factors derived from knowledge of spreading spectrum signal characteristics |
US6801565B1 (en) | 1999-06-25 | 2004-10-05 | Ericsson Inc. | Multi-stage rake combining methods and apparatus |
JP2001024555A (ja) | 1999-07-02 | 2001-01-26 | Nec Mobile Commun Ltd | Cdma通信装置および送信電力制御方法 |
US6278726B1 (en) * | 1999-09-10 | 2001-08-21 | Interdigital Technology Corporation | Interference cancellation in a spread spectrum communication system |
US6778815B1 (en) * | 1999-11-24 | 2004-08-17 | Kabushiki Kaisha Toshiba | Mobile radio terminal apparatus |
DE10001649A1 (de) * | 2000-01-17 | 2001-08-02 | Infineon Technologies Ag | CDMA-Empfänger |
US6650653B1 (en) * | 2000-01-19 | 2003-11-18 | Mitsubishi Electric Research Laboratories, Inc. | Software-based digital receiver adaptable to multiple multiplexing schemes |
US6434366B1 (en) * | 2000-05-31 | 2002-08-13 | Motorola, Inc. | Method and system for estimating adaptive array weights used to transmit a signal to a receiver in a wireless communication system |
US8363744B2 (en) | 2001-06-10 | 2013-01-29 | Aloft Media, Llc | Method and system for robust, secure, and high-efficiency voice and packet transmission over ad-hoc, mesh, and MIMO communication networks |
JP3514217B2 (ja) | 2000-06-29 | 2004-03-31 | 日本電気株式会社 | ターボ復号方法及び受信機 |
US6400335B1 (en) * | 2000-08-09 | 2002-06-04 | Lucent Technologies Inc. | Dynamic load sharing system and method using a cylindrical antenna array |
US6959033B1 (en) * | 2000-08-25 | 2005-10-25 | Texas Instruments Incorporated | System and method for assigning combiner channels in spread spectrum communications |
US6947475B2 (en) * | 2001-01-26 | 2005-09-20 | Qualcomm Inc. | Method and apparatus for estimating channel characteristics using pilot and non-pilot data |
GB2374257B (en) * | 2001-04-03 | 2004-03-10 | Ubinetics Ltd | Apparatus for and a method of providing a weighting factor |
US6990137B2 (en) * | 2001-05-17 | 2006-01-24 | Qualcomm, Incorporated | System and method for received signal prediction in wireless communications systems |
US7170924B2 (en) * | 2001-05-17 | 2007-01-30 | Qualcomm, Inc. | System and method for adjusting combiner weights using an adaptive algorithm in wireless communications system |
US20040014430A1 (en) * | 2001-07-11 | 2004-01-22 | Raviv Melamed | Multiple antenna system for wireless communication |
US7161974B2 (en) * | 2001-09-10 | 2007-01-09 | Sasken Communication Technologies Ltd. | Method for 2D antenna rake combining in a code division multiplication access system |
FI20012581A0 (fi) * | 2001-12-27 | 2001-12-27 | Nokia Corp | Häiriönpoistomenetelmä kommunikaatiojärjestelmässä |
JP4384045B2 (ja) * | 2002-10-11 | 2009-12-16 | テレフオンアクチーボラゲット エル エム エリクソン(パブル) | Wcdmaシステムにおける信号対妨害比(sir)を推定するための方法及び装置 |
US20040125865A1 (en) * | 2002-12-30 | 2004-07-01 | Frank Colin D. | Maximum signal-to-interference-and-noise spread spectrum rake receiver and method |
KR20060013544A (ko) * | 2003-05-19 | 2006-02-10 | 텔레호낙티에볼라게트 엘엠 에릭슨(피유비엘) | 전송 채널에 대한 채널 추정의 결정 |
KR100809795B1 (ko) * | 2004-03-05 | 2008-03-07 | 콸콤 인코포레이티드 | 무선통신에서 다중―안테나 수신 다이버시티 제어 |
RU2378759C2 (ru) * | 2004-03-05 | 2010-01-10 | Квэлкомм Инкорпорейтед | Способ и устройство для управления разнесением приема в беспроводной связи |
JP2005354255A (ja) * | 2004-06-09 | 2005-12-22 | Fujitsu Ltd | 干渉除去装置及び干渉除去方法 |
US8347062B2 (en) * | 2008-07-28 | 2013-01-01 | Lantiq Deutschland Gmbh | Interleaver memory allocation method and apparatus |
CN103297115B (zh) * | 2013-05-29 | 2016-01-06 | 西安烽火电子科技有限责任公司 | 一种短波广域分集接收装置及其接收方法 |
Family Cites Families (8)
Publication number | Priority date | Publication date | Assignee | Title |
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US5140615A (en) * | 1990-06-12 | 1992-08-18 | Motorola, Inc. | Maximal ratio diversity combining technique |
US5237586A (en) * | 1992-03-25 | 1993-08-17 | Ericsson-Ge Mobile Communications Holding, Inc. | Rake receiver with selective ray combining |
GB2269075B (en) * | 1992-07-24 | 1996-04-10 | Roke Manor Research | Improvements in or relating to mobile cellular radio systems |
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 |
JP2636712B2 (ja) * | 1993-12-08 | 1997-07-30 | 日本電気株式会社 | 移動通信装置 |
EP0701344B1 (en) * | 1994-02-10 | 2001-07-25 | Ntt Mobile Communications Network Inc. | Adaptive spread spectrum receiver |
GB2290010B (en) * | 1994-05-28 | 1998-09-09 | Roke Manor Research | Ambiguity resolution in direct sequence spread spectrum modulation systems |
US5592506A (en) * | 1994-10-17 | 1997-01-07 | Cylink Corporation | MSK spread-spectrum receiver which allows CDMA operations |
-
1996
- 1996-03-18 US US08/617,462 patent/US5812542A/en not_active Expired - Lifetime
-
1997
- 1997-02-26 GB GB9704024A patent/GB2311445B/en not_active Expired - Lifetime
- 1997-03-04 FR FR9702531A patent/FR2746233B1/fr not_active Expired - Lifetime
- 1997-03-13 JP JP07890097A patent/JP4210350B2/ja not_active Expired - Lifetime
- 1997-03-17 KR KR1019970009037A patent/KR100251334B1/ko not_active IP Right Cessation
- 1997-03-17 CN CN97103318A patent/CN1081408C/zh not_active Expired - Lifetime
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN100385812C (zh) * | 1998-05-29 | 2008-04-30 | 艾利森电话股份有限公司 | 使用周期性插入导频符号的多径传播延迟确定装置 |
CN1881832B (zh) * | 1999-09-10 | 2011-12-14 | 美商内数位科技公司 | Cdma通信系统中使用天线阵列的传输 |
Also Published As
Publication number | Publication date |
---|---|
FR2746233A1 (fr) | 1997-09-19 |
JP4210350B2 (ja) | 2009-01-14 |
GB9704024D0 (en) | 1997-04-16 |
US5812542A (en) | 1998-09-22 |
FR2746233B1 (fr) | 2003-04-18 |
KR100251334B1 (ko) | 2000-04-15 |
CN1081408C (zh) | 2002-03-20 |
GB2311445A (en) | 1997-09-24 |
KR970068273A (ko) | 1997-10-13 |
JPH09261203A (ja) | 1997-10-03 |
GB2311445B (en) | 2000-08-09 |
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Address after: Illinois State Patentee after: MOTOROLA MOBILITY LLC Address before: Illinois State Patentee before: MOTOROLA MOBILITY, Inc. |
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Address after: Illinois State Patentee after: MOTOROLA MOBILITY, Inc. Address before: Illinois Instrunment Patentee before: MOTOROLA MOBILITY, Inc. |
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Effective date of registration: 20160614 Address after: California, USA Patentee after: Google Technology Holdings LLC Address before: Illinois State Patentee before: MOTOROLA MOBILITY LLC |
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Granted publication date: 20020320 |