ES2162512T3 - Receptor y metodo para transmision cdma con buscador de caminos mejorado. - Google Patents
Receptor y metodo para transmision cdma con buscador de caminos mejorado.Info
- Publication number
- ES2162512T3 ES2162512T3 ES99440160T ES99440160T ES2162512T3 ES 2162512 T3 ES2162512 T3 ES 2162512T3 ES 99440160 T ES99440160 T ES 99440160T ES 99440160 T ES99440160 T ES 99440160T ES 2162512 T3 ES2162512 T3 ES 2162512T3
- Authority
- ES
- Spain
- Prior art keywords
- receiver
- path
- road search
- cdma transmission
- improved road
- 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
- 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
- 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
Landscapes
- Engineering & Computer Science (AREA)
- Computer Networks & Wireless Communication (AREA)
- Signal Processing (AREA)
- Mobile Radio Communication Systems (AREA)
- Radio Transmission System (AREA)
Abstract
Un receptor para un rendimiento mejorado de la transmisión de radio CDMA, que comprende un receptor Rake (1) provisto de un buscador de caminos o trayectorias (3), un estimador de canal (4) y un combinador (5) destinado a seleccionar los caminos de los canales óptimos,y en el cual el buscador de caminos (3) selecciona un conjunto de retardos de camino (7), caracterizado porque al menos dos buscadores de caminos (3a, 3b) se conectan de tal forma que la salida del primer buscador de caminos (3a) se enlaza con una entrada del segundo buscador de caminos (3b).
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
EP99440160A EP1069697B1 (en) | 1999-06-24 | 1999-06-24 | Receiver and method for CDMA transmission with enhanced path searcher |
Publications (1)
Publication Number | Publication Date |
---|---|
ES2162512T3 true ES2162512T3 (es) | 2001-12-16 |
Family
ID=8242347
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
ES99440160T Expired - Lifetime ES2162512T3 (es) | 1999-06-24 | 1999-06-24 | Receptor y metodo para transmision cdma con buscador de caminos mejorado. |
Country Status (6)
Country | Link |
---|---|
US (1) | US6430166B1 (es) |
EP (1) | EP1069697B1 (es) |
JP (1) | JP2001036433A (es) |
CN (1) | CN1142647C (es) |
DE (1) | DE69900302T2 (es) |
ES (1) | ES2162512T3 (es) |
Families Citing this family (24)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP3369513B2 (ja) * | 1999-07-02 | 2003-01-20 | 松下電器産業株式会社 | 通信端末装置及び無線受信方法 |
JP3487842B2 (ja) * | 1999-07-15 | 2004-01-19 | インフィネオン テクノロジーズ アクチェンゲゼルシャフト | モバイル無線チャネルのチャネルインパルス応答を推定する方法 |
US7072381B2 (en) * | 1999-12-28 | 2006-07-04 | Ntt Docomo, Inc. | Path search method, channel estimation method and communication device |
JP3581072B2 (ja) * | 2000-01-24 | 2004-10-27 | 株式会社エヌ・ティ・ティ・ドコモ | チャネル構成方法及びその方法を利用する基地局 |
US6801564B2 (en) * | 2000-02-23 | 2004-10-05 | Ipr Licensing, Inc. | Reverse link correlation filter in wireless communication systems |
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 |
CN1120591C (zh) * | 2000-12-18 | 2003-09-03 | 信息产业部电信传输研究所 | 直接扩频/码分多址综合扩频相干接收装置 |
GB0031841D0 (en) * | 2000-12-29 | 2001-02-14 | Nokia Networks Oy | Interference power estimation for adaptive antenna system |
GB0031834D0 (en) * | 2000-12-29 | 2001-02-14 | Nokia Networks Oy | Parameter estimation for adaptive antenna system |
US20030072282A1 (en) * | 2001-10-17 | 2003-04-17 | Ying-Chang Liang | Code division multiple access downlink receiver |
EP1496628B1 (en) * | 2002-04-03 | 2013-06-05 | NEC Corporation | Mobile communication system, mobile station, base station, communication path quality estimation method used for the same |
JP4052060B2 (ja) * | 2002-08-21 | 2008-02-27 | 日本電気株式会社 | Cdma無線装置及びそれに用いる簡易パス推定方法 |
KR20040021162A (ko) * | 2002-09-02 | 2004-03-10 | 삼성전자주식회사 | 등화성능을 향상시키는 등화기를 갖는 잔류측파대수신기및 그의 등화방법 |
WO2004028020A1 (en) * | 2002-09-18 | 2004-04-01 | Telefonaktiebolaget Lm Ericsson (Publ) | Delay estimation and path selection for common and dedicated channels |
EP1401112A1 (en) * | 2002-09-18 | 2004-03-24 | Telefonaktiebolaget L M Ericsson (Publ) | Delay estimation and path selection for common and dedicated channels |
FR2853170A1 (fr) * | 2003-03-31 | 2004-10-01 | Nortel Networks Ltd | Procede de traitement d'un signal par un recepteur radio et recepteur radio pour la mise en oeuvre du procede |
JP3665322B2 (ja) * | 2003-10-24 | 2005-06-29 | 松下電器産業株式会社 | 無線受信装置およびフィンガ割り当て方法 |
ATE420497T1 (de) * | 2003-11-22 | 2009-01-15 | Alcatel Lucent | Verfahren zur ermittlung der verzögerungen in einem mehrpfad-kanal |
US7426175B2 (en) * | 2004-03-30 | 2008-09-16 | Motorola, Inc. | Method and apparatus for pilot signal transmission |
EP1850495A1 (en) * | 2005-02-16 | 2007-10-31 | NEC Corporation | Cdma receiving device, and path searching method |
US7826807B2 (en) * | 2005-03-09 | 2010-11-02 | Qualcomm Incorporated | Methods and apparatus for antenna control in a wireless terminal |
US7817604B2 (en) * | 2005-06-13 | 2010-10-19 | Telefonaktiebolaget L M Ericsson (Publ) | Shared control channel detection strategies |
DE102006056158B4 (de) | 2006-11-28 | 2011-11-17 | Infineon Technologies Ag | Kanalschätzung für OFDM Systeme |
US9941925B1 (en) * | 2014-02-21 | 2018-04-10 | Rockwell Collins, Inc. | Communication system supporting high-precision measurements utilizing reference sequence re-modulation |
Family Cites Families (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5671221A (en) * | 1995-06-14 | 1997-09-23 | Sharp Microelectronics Technology, Inc. | Receiving method and apparatus for use in a spread-spectrum communication system |
JP3598609B2 (ja) * | 1995-09-20 | 2004-12-08 | 双葉電子工業株式会社 | スペクトル拡散通信システムにおける受信装置 |
JP2853742B2 (ja) * | 1997-06-10 | 1999-02-03 | 日本電気株式会社 | 直接拡散/符号分割多重方式干渉除去受信装置 |
JP2924864B2 (ja) * | 1997-06-16 | 1999-07-26 | 日本電気株式会社 | 適応レイク受信方式 |
-
1999
- 1999-06-24 DE DE69900302T patent/DE69900302T2/de not_active Expired - Fee Related
- 1999-06-24 ES ES99440160T patent/ES2162512T3/es not_active Expired - Lifetime
- 1999-06-24 EP EP99440160A patent/EP1069697B1/en not_active Expired - Lifetime
- 1999-08-19 US US09/377,031 patent/US6430166B1/en not_active Expired - Fee Related
-
2000
- 2000-06-09 JP JP2000173062A patent/JP2001036433A/ja active Pending
- 2000-06-22 CN CNB00118878XA patent/CN1142647C/zh not_active Expired - Fee Related
Also Published As
Publication number | Publication date |
---|---|
US6430166B1 (en) | 2002-08-06 |
CN1301091A (zh) | 2001-06-27 |
DE69900302D1 (de) | 2001-10-25 |
EP1069697A1 (en) | 2001-01-17 |
EP1069697B1 (en) | 2001-09-19 |
JP2001036433A (ja) | 2001-02-09 |
DE69900302T2 (de) | 2002-05-08 |
CN1142647C (zh) | 2004-03-17 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
FG2A | Definitive protection |
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