CO4820425A1 - Metodo y aparato para estimacion de retardo de trayectorias multiples en sistemas de comunicacion de espectro diseminado de secuencia directa - Google Patents
Metodo y aparato para estimacion de retardo de trayectorias multiples en sistemas de comunicacion de espectro diseminado de secuencia directaInfo
- Publication number
- CO4820425A1 CO4820425A1 CO99001240A CO99001240A CO4820425A1 CO 4820425 A1 CO4820425 A1 CO 4820425A1 CO 99001240 A CO99001240 A CO 99001240A CO 99001240 A CO99001240 A CO 99001240A CO 4820425 A1 CO4820425 A1 CO 4820425A1
- Authority
- CO
- Colombia
- Prior art keywords
- delay
- correlation values
- correlation
- values
- producing
- Prior art date
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
- H04B1/7113—Determination of path profile
-
- 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
-
- 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
- H04B1/709—Correlator structure
Landscapes
- Engineering & Computer Science (AREA)
- Computer Networks & Wireless Communication (AREA)
- Signal Processing (AREA)
- Mobile Radio Communication Systems (AREA)
- Noise Elimination (AREA)
- Monitoring And Testing Of Transmission In General (AREA)
- Complex Calculations (AREA)
- Measurement Of Velocity Or Position Using Acoustic Or Ultrasonic Waves (AREA)
- Cable Transmission Systems, Equalization Of Radio And Reduction Of Echo (AREA)
- Synchronisation In Digital Transmission Systems (AREA)
Abstract
Una unidad de estimación de retardo que consta de: medios para generar valores de correlación que corresponden a una pluralidad de valores de retardo; medios para producir un primer estimado de retardo que utiliza un valor de retardo asociado con el valor de correlación más grande; medios para procesar los valores de correlación modificando por o menos un valor de correlación para producir valores de correlación; medios para computar el valor de correlación procesado más grande; y medios para producir un segundo estimado de retardo utilizando un retardo asociado con el valor de correlación procesado más grande. 1Una unidad de estimación de retardo que consta de: medios para producir un conjunto de estimados de retardo; medios para generar valores de correlación que corresponden a una pluralidad de valores de retardo; medios para procesar los valores de correlación modificando los valores de correlación de acuerdo con el conjunto de estimados de retardo para producir valores de correlación procesada; y medios para refinar los estimados de retardo utilizando los valores de correlación procesada. 2Un método para estimar por lo menos un retardo, que consta de los siguientes pasos: generar valores de correlación en una pluralidad de retardos; producir una pluralidad de conjuntos de estimado de retardo candidato;calcular la métrica asociada con cada conjunto de estimado de retardo candidato para producir resultados de cálculo; seleccionar uno de los resultados del cálculo; yproducir una pluralidad de estimados de retardo utilizando el conjunto de estimado de retardo candidato que corresponda a los resultados de cálculo seleccionados.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US09/005,580 US6839378B1 (en) | 1998-01-12 | 1998-01-12 | Method and apparatus for multipath delay estimation in direct sequence spread spectrum communication systems |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CO4820425A1 true CO4820425A1 (es) | 1999-07-28 |
Family
ID=21716597
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CO99001240A CO4820425A1 (es) | 1998-01-12 | 1999-01-12 | Metodo y aparato para estimacion de retardo de trayectorias multiples en sistemas de comunicacion de espectro diseminado de secuencia directa |
Country Status (16)
| Country | Link |
|---|---|
| US (1) | US6839378B1 (es) |
| EP (1) | EP1048127B1 (es) |
| JP (1) | JP2002501323A (es) |
| KR (1) | KR100752015B1 (es) |
| CN (1) | CN1137551C (es) |
| AR (1) | AR015508A1 (es) |
| AU (1) | AU747307B2 (es) |
| BR (1) | BRPI9906840B1 (es) |
| CO (1) | CO4820425A1 (es) |
| DE (1) | DE69929032T2 (es) |
| EE (1) | EE200000413A (es) |
| HK (1) | HK1035086A1 (es) |
| IL (1) | IL137263A (es) |
| MY (1) | MY124669A (es) |
| TR (1) | TR200002016T2 (es) |
| WO (1) | WO1999035763A1 (es) |
Families Citing this family (37)
| Publication number | Priority date | Publication date | Assignee | Title |
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| US6560273B1 (en) | 1998-10-07 | 2003-05-06 | Ericsson Inc. | Delay searcher and delay trackers interaction for new delays assignment to rake fingers |
| JP3795756B2 (ja) * | 1998-10-27 | 2006-07-12 | シーメンス アクチエンゲゼルシヤフト | 移動局及び／又は固定送信局／受信局間でワイヤレス電気通信を行う電気通信システム、”アーリー／レートトラッキング”を有する”ｒａｋｅ”−受信機でのメモリアクセスの制御方法 |
| US7154970B1 (en) * | 1999-02-10 | 2006-12-26 | At&T Corp. | Differential transmitter diversity technique for wireless communications |
| US6314130B1 (en) * | 1999-04-28 | 2001-11-06 | Dspc Technologies, Ltd. | System and method for joint time tracking of multiple paths |
| WO2001013530A1 (en) * | 1999-11-26 | 2001-02-22 | Nokia Networks Oy | Rake receiver |
| JP3468189B2 (ja) * | 2000-02-02 | 2003-11-17 | 日本電気株式会社 | パターン生成回路及びそれを用いたマルチパス検出回路並びにそのマルチパス検出方法 |
| AU2004202130B2 (en) * | 2000-02-02 | 2006-11-09 | Nec Corporation | Pattern Generation Circuit, Multi-path Detection Circuit Employing the Same and Multi-path Detection Method |
| US6937603B1 (en) * | 2000-06-02 | 2005-08-30 | Intel Corporation | Optimizing buffer latency in a streamed packet delivery session |
| GB0016663D0 (en) * | 2000-07-06 | 2000-08-23 | Nokia Networks Oy | Receiver and method of receiving |
| US6901105B1 (en) | 2000-08-28 | 2005-05-31 | Koninklijke Philips Electroncs N.V. | Tracking of a multi-path resolved signal in a rake receiver |
| CN1913395A (zh) * | 2000-08-30 | 2007-02-14 | 松下电器产业株式会社 | 数据传送装置、无线电通信系统及无线电通信方法 |
| US7020175B2 (en) * | 2000-09-21 | 2006-03-28 | Motorola, Inc. | MMSE reception of DS-CDMA with transmit diversity |
| JP3428637B2 (ja) * | 2000-11-27 | 2003-07-22 | 日本電気株式会社 | Ｃｄｍａ受信機のマルチパス検出方法および回路 |
| JP3510589B2 (ja) * | 2000-12-15 | 2004-03-29 | Ｎｅｃエレクトロニクス株式会社 | セルサーチ方法およびセルサーチ装置 |
| 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 |
| JP2002232327A (ja) | 2001-02-05 | 2002-08-16 | Nec Corp | 受信装置に用いるパス選択方法および回路 |
| WO2002087141A1 (fr) * | 2001-04-16 | 2002-10-31 | Matsushita Electric Industrial Co., Ltd. | Procede et appareil de synchronisation de trames |
| US7184492B2 (en) | 2003-02-10 | 2007-02-27 | Ericsson Inc. | Using antenna arrays in multipath environment |
| JP3751600B2 (ja) * | 2003-03-27 | 2006-03-01 | 株式会社東芝 | 受信装置及び受信方法 |
| US7212591B2 (en) | 2003-04-28 | 2007-05-01 | Telefonaktiebolaget Lm Ericsson (Publ) | Methods and receivers that estimate multi-path delays by removing signal rays from a power-delay profile |
| US7239677B2 (en) * | 2003-04-29 | 2007-07-03 | Telefonaktiebolaget L M Ericsson (Publ) | Method and apparatus for soft symbol scaling |
| WO2004107600A1 (en) * | 2003-05-27 | 2004-12-09 | Telefonaktiebolaget L M Ericsson (Publ) | Selecting fingers for rake combining |
| EP1482650A1 (en) * | 2003-05-27 | 2004-12-01 | Telefonaktiebolaget LM Ericsson (publ) | Selecting fingers for RAKE combining |
| US7469024B2 (en) * | 2003-09-02 | 2008-12-23 | Telefonaktiebolaget Lm Ericsson (Publ) | Method and apparatus for finger placement in rake receiver |
| US8964912B2 (en) * | 2005-05-31 | 2015-02-24 | Telefonaktiebolaget Lm Ericsson (Publ) | Adaptive timing recovery via generalized RAKE reception |
| DE602005019114D1 (de) * | 2005-07-07 | 2010-03-11 | Nat Inst Inf & Comm Tech | Vorrichtung und verfahren zur verzögerungsschätzung |
| US20070021086A1 (en) * | 2005-07-22 | 2007-01-25 | Industrial Technology Research Institute | Method for path selection and signal processing in wireless communications system |
| SG136813A1 (en) * | 2006-04-11 | 2007-11-29 | Sony Corp | A method for estimating one or more parameters of a ultra wideband signal and a receiver system for receiving ultra wideband signals |
| CN101170527B (zh) * | 2006-10-24 | 2010-07-14 | 中兴通讯股份有限公司 | 一种基于mmse的mlse简化检测方法及其装置 |
| JP4623027B2 (ja) * | 2007-03-06 | 2011-02-02 | 三菱電機株式会社 | 測距装置及び測位装置並びに測距方法及び測位方法 |
| EP2809012A1 (en) | 2007-04-02 | 2014-12-03 | Core Wireless Licensing S.a.r.l. | Methods, apparatuses and computer program products for code correlation of multi-path spread spectrum signals |
| US8045600B2 (en) * | 2008-04-29 | 2011-10-25 | Telefonaktiebolaget Lm Ericsson (Publ) | Method and apparatus for compensating for processing timing misalignment in a communication receiver |
| EP2273687B1 (en) * | 2009-07-01 | 2016-12-07 | Telefonaktiebolaget LM Ericsson (publ) | Multi-path timing tracking and impairment modeling for improved grake receiver performance in mobility scenarios |
| CN101945069B (zh) * | 2009-07-08 | 2014-02-26 | 电信科学技术研究院 | 一种调整数字预失真反馈延时的方法和装置 |
| US8798176B2 (en) * | 2009-07-10 | 2014-08-05 | Telefonaktiebolaget L M Ericsson (Publ) | Joint time/frequency processing for wireless receivers |
| CN102638290B (zh) * | 2012-03-15 | 2015-12-09 | 北京邮电大学 | 一种基于信道测量的多径信号分量提取方法及装置 |
| CN113190994B (zh) * | 2021-04-28 | 2024-10-18 | 北京航天飞行控制中心 | 模型的修正方法及装置、存储介质及电子装置 |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| US4007330A (en) * | 1975-08-13 | 1977-02-08 | Bunker Ramo Corporation | Method and apparatus for demodulation of relative phase modulated binary data |
| US4550414A (en) * | 1983-04-12 | 1985-10-29 | Charles Stark Draper Laboratory, Inc. | Spread spectrum adaptive code tracker |
| 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 |
| US5493588A (en) * | 1992-01-22 | 1996-02-20 | Trimble Navigation Limited | Multipath compensation for code phase signals |
| US5414729A (en) | 1992-01-24 | 1995-05-09 | Novatel Communications Ltd. | Pseudorandom noise ranging receiver which compensates for multipath distortion by making use of multiple correlator time delay spacing |
| US5615232A (en) | 1993-11-24 | 1997-03-25 | Novatel Communications Ltd. | Method of estimating a line of sight signal propagation time using a reduced-multipath correlation function |
| FI935834L (fi) | 1993-12-23 | 1995-06-24 | Nokia Telecommunications Oy | Menetelmä kaikukohtaan sovittautumiseksi kaiunpoistajassa |
-
1998
- 1998-01-12 US US09/005,580 patent/US6839378B1/en not_active Expired - Lifetime
-
1999
- 1999-01-08 MY MYPI99000064A patent/MY124669A/en unknown
- 1999-01-12 AR ARP990100100A patent/AR015508A1/es not_active Application Discontinuation
- 1999-01-12 WO PCT/US1999/000372 patent/WO1999035763A1/en active IP Right Grant
- 1999-01-12 AU AU22167/99A patent/AU747307B2/en not_active Expired
- 1999-01-12 CN CNB998021342A patent/CN1137551C/zh not_active Expired - Lifetime
- 1999-01-12 EE EEP200000413A patent/EE200000413A/xx unknown
- 1999-01-12 TR TR2000/02016T patent/TR200002016T2/xx unknown
- 1999-01-12 DE DE69929032T patent/DE69929032T2/de not_active Expired - Lifetime
- 1999-01-12 IL IL13726399A patent/IL137263A/xx not_active IP Right Cessation
- 1999-01-12 JP JP2000528030A patent/JP2002501323A/ja active Pending
- 1999-01-12 BR BRPI9906840A patent/BRPI9906840B1/pt not_active IP Right Cessation
- 1999-01-12 KR KR1020007007696A patent/KR100752015B1/ko active IP Right Grant
- 1999-01-12 CO CO99001240A patent/CO4820425A1/es unknown
- 1999-01-12 EP EP99902113A patent/EP1048127B1/en not_active Expired - Lifetime
-
2001
- 2001-08-07 HK HK01105473A patent/HK1035086A1/xx not_active IP Right Cessation
Also Published As
| Publication number | Publication date |
|---|---|
| KR20010034086A (ko) | 2001-04-25 |
| IL137263A0 (en) | 2001-07-24 |
| TR200002016T2 (tr) | 2001-01-22 |
| EP1048127A1 (en) | 2000-11-02 |
| CN1288613A (zh) | 2001-03-21 |
| MY124669A (en) | 2006-06-30 |
| CN1137551C (zh) | 2004-02-04 |
| WO1999035763A1 (en) | 1999-07-15 |
| DE69929032D1 (de) | 2006-01-26 |
| IL137263A (en) | 2005-07-25 |
| US6839378B1 (en) | 2005-01-04 |
| KR100752015B1 (ko) | 2007-08-28 |
| HK1035086A1 (en) | 2001-11-09 |
| EP1048127B1 (en) | 2005-12-21 |
| AR015508A1 (es) | 2001-05-02 |
| JP2002501323A (ja) | 2002-01-15 |
| AU747307B2 (en) | 2002-05-16 |
| BR9906840A (pt) | 2000-10-17 |
| DE69929032T2 (de) | 2006-08-24 |
| EE200000413A (et) | 2001-12-17 |
| AU2216799A (en) | 1999-07-26 |
| BRPI9906840B1 (pt) | 2017-05-30 |
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