DE60210777D1 - Kanalprädiktion bei der sende-diversity mit geschlossener schleife - Google Patents
Kanalprädiktion bei der sende-diversity mit geschlossener schleifeInfo
- Publication number
- DE60210777D1 DE60210777D1 DE60210777T DE60210777T DE60210777D1 DE 60210777 D1 DE60210777 D1 DE 60210777D1 DE 60210777 T DE60210777 T DE 60210777T DE 60210777 T DE60210777 T DE 60210777T DE 60210777 D1 DE60210777 D1 DE 60210777D1
- Authority
- DE
- Germany
- Prior art keywords
- channel
- base station
- closed loop
- prediction
- transceiver
- 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
- H04B7/00—Radio transmission systems, i.e. using radiation field
- H04B7/005—Control of transmission; Equalising
-
- 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
- H04B7/06—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas at the transmitting station
- H04B7/0613—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas at the transmitting station using simultaneous transmission
- H04B7/0615—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas at the transmitting station using simultaneous transmission of weighted versions of same signal
- H04B7/0619—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas at the transmitting station using simultaneous transmission of weighted versions of same signal using feedback from receiving side
- H04B7/0621—Feedback content
- H04B7/0634—Antenna weights or vector/matrix coefficients
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L25/00—Baseband systems
- H04L25/02—Details ; arrangements for supplying electrical power along data transmission lines
- H04L25/0202—Channel estimation
- H04L25/0204—Channel estimation of multiple channels
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L25/00—Baseband systems
- H04L25/02—Details ; arrangements for supplying electrical power along data transmission lines
- H04L25/0202—Channel estimation
- H04L25/0224—Channel estimation using sounding signals
Landscapes
- Engineering & Computer Science (AREA)
- Computer Networks & Wireless Communication (AREA)
- Signal Processing (AREA)
- Power Engineering (AREA)
- Physics & Mathematics (AREA)
- Mathematical Physics (AREA)
- Mobile Radio Communication Systems (AREA)
- Radio Transmission System (AREA)
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US09/908,963 US7174178B2 (en) | 2001-07-19 | 2001-07-19 | Deriving a more accurate estimate from prediction data in closed loop transmit diversity modes |
US908963 | 2001-07-19 | ||
PCT/US2002/022389 WO2003009493A1 (en) | 2001-07-19 | 2002-07-12 | Channel prediction in closed loop transmit diversity |
Publications (2)
Publication Number | Publication Date |
---|---|
DE60210777D1 true DE60210777D1 (de) | 2006-05-24 |
DE60210777T2 DE60210777T2 (de) | 2007-04-19 |
Family
ID=25426439
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
DE60210777T Expired - Lifetime DE60210777T2 (de) | 2001-07-19 | 2002-07-12 | Kanalprädiktion bei der sende-diversity mit geschlossener schleife |
Country Status (10)
Country | Link |
---|---|
US (1) | US7174178B2 (de) |
EP (1) | EP1410528B1 (de) |
JP (1) | JP3790723B2 (de) |
KR (1) | KR100654282B1 (de) |
CN (1) | CN1181634C (de) |
AT (1) | ATE323977T1 (de) |
DE (1) | DE60210777T2 (de) |
SG (1) | SG125901A1 (de) |
TW (1) | TW574793B (de) |
WO (1) | WO2003009493A1 (de) |
Families Citing this family (60)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR2820574B1 (fr) * | 2001-02-08 | 2005-08-05 | Wavecom Sa | Procede d'extraction d'un motif de symboles de reference servant a estimer la fonction de transfert d'un canal de transmission, signal, dispositif et procedes correspondants |
DE60212761T2 (de) * | 2001-05-29 | 2006-11-16 | Kabushiki Kaisha Toshiba | Gerät zur drahtlosen Kommunikation |
KR100615888B1 (ko) * | 2001-08-25 | 2006-08-25 | 삼성전자주식회사 | 안테나 어레이를 포함하는 이동 통신 장치 및 방법 |
US7142830B2 (en) * | 2001-09-19 | 2006-11-28 | Nokia Corporation | Adaptive transceiver system |
JP3997890B2 (ja) * | 2001-11-13 | 2007-10-24 | 松下電器産業株式会社 | 送信方法及び送信装置 |
EP1453223A1 (de) * | 2001-11-30 | 2004-09-01 | Fujitsu Limited | Kommunikationseinrichtung mit übertragungs-diversity |
FR2835984B1 (fr) * | 2002-02-11 | 2006-06-23 | Evolium Sas | Procede pour ameliorer les performances d'un systeme de radiocommunications mobiles |
US7162261B1 (en) * | 2002-02-27 | 2007-01-09 | Sprint Communications Company L.P. | Method and device for identifying antennae to transmit wireless signals |
US20040204103A1 (en) * | 2002-03-18 | 2004-10-14 | Rouphael Antoine J. | Adaptive beamforming in a wireless communication system |
AU2002250773A1 (en) * | 2002-03-22 | 2003-10-08 | Huawei Technologies Co., Ltd. | A self-adapting weighted space time transmitting diversity method and system thereof |
WO2003084099A1 (fr) * | 2002-04-03 | 2003-10-09 | Nec Corporation | Systeme de communication mobile, station mobile, station de base, procede d'estimation de la qualite de la voie de communication utilise dans ce systeme |
WO2003096977A2 (en) | 2002-05-17 | 2003-11-27 | Yale University | Methods of treating hepatitis |
KR100640470B1 (ko) * | 2002-06-29 | 2006-10-30 | 삼성전자주식회사 | 패킷 서비스 통신 시스템에서 전송 안테나 다이버시티방식을 사용하여 데이터를 전송 장치 및 방법 |
JP2006505221A (ja) * | 2002-11-01 | 2006-02-09 | インターディジタル テクノロジー コーポレイション | 無線通信システム用のチャネル品質予測方法 |
US20040132494A1 (en) * | 2003-01-03 | 2004-07-08 | Olav Tirkkonen | Communication method |
EP1445886B1 (de) | 2003-01-31 | 2015-05-20 | Ntt Docomo, Inc. | Mehreingang-Mehrausgang (MIMO) Kommunikationssystem, MIMO Empfänger und Verfahren zum MIMO Empfang |
US7155177B2 (en) * | 2003-02-10 | 2006-12-26 | Qualcomm Incorporated | Weight prediction for closed-loop mode transmit diversity |
FR2851384B1 (fr) * | 2003-02-17 | 2009-12-18 | Wavecom | Procede de transmission de donnees radio, signal, systeme et dispositifs correspondant. |
GB2399987B (en) * | 2003-03-27 | 2006-10-11 | Ubinetics Ltd | Wireless communications system |
CN1549480A (zh) * | 2003-05-06 | 2004-11-24 | �ʼҷ����ֵ��ӹɷ�����˾ | 具有改进的信道估计能力的cdma通信系统 |
US8559406B2 (en) | 2003-06-03 | 2013-10-15 | Qualcomm Incorporated | Method and apparatus for communications of data in a communication system |
KR100950640B1 (ko) * | 2003-06-13 | 2010-04-01 | 삼성전자주식회사 | 폐순환 전송 다이버시티 시스템에서의 안테나 가중치 결정방법 및 장치 |
DE10337445B3 (de) * | 2003-08-14 | 2005-06-30 | Siemens Ag | Verfahren zum Betrieb eines Funkkommunikationssystems, Empfangsstation sowie Sendestation für ein Funkkommunkationssystem |
FI20031441A0 (fi) * | 2003-10-03 | 2003-10-03 | Nokia Corp | Palautetietoa lähetyksen säätämiseksi tietoliikennejärjestelmässä |
US20050135460A1 (en) * | 2003-12-22 | 2005-06-23 | Hidenori Akita | Method and apparatus for estimating a SIR of a pilot channel in a MC-CDMA system |
US20050141598A1 (en) * | 2003-12-30 | 2005-06-30 | Hidenori Akita | Method and apparatus for estimating a SIR of a pilot channel in a MC-CDMA system |
US7352829B2 (en) | 2004-01-12 | 2008-04-01 | Infineon Technologies Ag | Data-aided channel estimation |
US7376192B2 (en) * | 2004-07-22 | 2008-05-20 | Telefonaktiebolaget L M Ericsson (Publ) | Delta modulation for channel feedback in transmit diversity wireless communication systems |
US7907910B2 (en) * | 2004-08-02 | 2011-03-15 | Intel Corporation | Method and apparatus to vary power level of training signal |
US7933628B2 (en) * | 2004-08-18 | 2011-04-26 | Ruckus Wireless, Inc. | Transmission and reception parameter control |
BRPI0515389B1 (pt) * | 2004-09-17 | 2018-09-25 | Ntt Docomo Inc | método de comunicação móvel, estação móvel e estação base |
US7522555B2 (en) * | 2005-01-21 | 2009-04-21 | Intel Corporation | Techniques to manage channel prediction |
KR100723459B1 (ko) * | 2005-07-29 | 2007-05-31 | 한국과학기술원 | 무선 이동 통신 시스템에서의 귀환 신호를 이용한 하향무선 채널 환경 예측 장치 및 방법 |
CN1960556B (zh) * | 2005-09-20 | 2012-01-11 | 开曼群岛威睿电通股份有限公司 | 迭代信道预测 |
US7778599B2 (en) * | 2006-05-01 | 2010-08-17 | Intel Corporation | Aggregated channel feedback |
US20080043648A1 (en) * | 2006-05-25 | 2008-02-21 | Proximetry, Inc. | Systems and methods for wireless resource management |
US8116391B2 (en) | 2006-05-26 | 2012-02-14 | Wi-Lan Inc. | Quantization of channel state information in multiple antenna systems |
ATE418193T1 (de) * | 2006-06-23 | 2009-01-15 | Mitsubishi Electric Inf Tech | Verfahren und vorrichtung zur bestimmung von kanalzustandsinformationen welche von einer ersten zu einer zweiten telekommunikationsvorrichtung zu übertragen sind |
US8670725B2 (en) | 2006-08-18 | 2014-03-11 | Ruckus Wireless, Inc. | Closed-loop automatic channel selection |
JP4415026B2 (ja) * | 2007-03-09 | 2010-02-17 | 株式会社エヌ・ティ・ティ・ドコモ | 移動通信システムにおける基地局アンテナ放射パターン制御方法及びそのシステム |
US8750811B2 (en) * | 2007-03-14 | 2014-06-10 | Google Inc. | Method, apparatus and system for phase difference adjustment in transmit diversity |
US8036282B2 (en) | 2007-09-07 | 2011-10-11 | Wi-Lan Inc. | Multi-tiered quantization of channel state information in multiple antenna systems |
US8009778B2 (en) * | 2007-09-07 | 2011-08-30 | Tr Technologies Inc. | Quantized channel state information prediction in multiple antenna systems |
KR100930717B1 (ko) * | 2007-09-13 | 2009-12-09 | 한국전자통신연구원 | 무선 통신 시스템의 채널 추정 및 피드백 방법 |
US8234546B2 (en) | 2008-04-21 | 2012-07-31 | Wi-Lan, Inc. | Mitigation of transmission errors of quantized channel state information feedback in multi antenna systems |
CN101594321B (zh) * | 2008-05-27 | 2012-07-04 | 电信科学技术研究院 | 一种信道预测的方法和装置 |
GB0820535D0 (en) | 2008-11-10 | 2008-12-17 | Icera Inc | Communication system and method |
CN101765161B (zh) * | 2009-12-29 | 2015-08-12 | 中兴通讯股份有限公司 | 一种链路自适应方法及装置 |
US8559990B2 (en) * | 2010-02-05 | 2013-10-15 | Qualcomm Incorporated | Apparatus and method for enabling uplink beamforming transit diversity channel estimation |
JP5144709B2 (ja) * | 2010-04-21 | 2013-02-13 | 株式会社日立国際電気 | 移動局装置 |
TWI397276B (zh) * | 2010-06-03 | 2013-05-21 | Univ Nat Chiao Tung | 無線通訊傳送及接收系統及其方法 |
CN102447502B (zh) * | 2010-09-30 | 2015-03-11 | 日电(中国)有限公司 | 用于获取进行波束成形所需的信道状态信息的方法和设备 |
US8737506B1 (en) * | 2010-12-29 | 2014-05-27 | Sprint Communications Company L.P. | Determination of transmit diversity transmission delays |
US8644265B2 (en) * | 2011-09-30 | 2014-02-04 | Xiao-an Wang | Wideband analog channel information feedback |
CN103139830B (zh) * | 2011-12-05 | 2018-05-11 | 中兴通讯股份有限公司 | 一种进行在线dpct相位寻优的装置和方法 |
US9756112B2 (en) | 2015-02-11 | 2017-09-05 | At&T Intellectual Property I, L.P. | Method and system for managing service quality according to network status predictions |
US10587317B2 (en) * | 2017-06-27 | 2020-03-10 | Telefonaktiebolaget Lm Ericsson (Publ) | Determination of complex weight vectors for a radio transceiver device |
US10693575B2 (en) | 2018-08-31 | 2020-06-23 | At&T Intellectual Property I, L.P. | System and method for throughput prediction for cellular networks |
US10868726B2 (en) | 2018-12-07 | 2020-12-15 | At&T Intellectual Property I, L.P. | Apparatus and method for selecting a bandwidth prediction source |
US11490149B2 (en) | 2019-03-15 | 2022-11-01 | At&T Intellectual Property I, L.P. | Cap-based client-network interaction for improved streaming experience |
Family Cites Families (15)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB8406734D0 (en) * | 1984-03-15 | 1984-04-18 | Tate & Lyle Plc | Sugar process |
EP0807989B1 (de) | 1996-05-17 | 2001-06-27 | Motorola Ltd | Verfahren und Vorrichtung zur Gewichtung eines Uebertragungsweges |
JP3441638B2 (ja) * | 1997-12-18 | 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 |
KR19990053963A (ko) * | 1997-12-24 | 1999-07-15 | 정태기 | 최적 기지국 자동 탐색형 중계기용 스마트 안테나 및 복사 패턴생성 방법 |
JP4203138B2 (ja) * | 1998-01-20 | 2008-12-24 | 株式会社ミクニ | 計量式電磁ポンプ |
KR20000021097A (ko) | 1998-09-25 | 2000-04-15 | 김영환 | 씨디엠에이 이동통신 시스템에서의 페이징 채널의 전력제어방법 |
US6690652B1 (en) * | 1998-10-26 | 2004-02-10 | International Business Machines Corporation | Adaptive power control in wideband CDMA cellular systems (WCDMA) and methods of operation |
ES2224667T3 (es) * | 1999-05-19 | 2005-03-01 | Nokia Corporation | Metodo y sistema de diversidad de transmision. |
AU5567300A (en) | 1999-06-23 | 2001-01-09 | Japan As Represented By President Of Hokkaido University | Radio device |
US6901062B2 (en) * | 1999-12-01 | 2005-05-31 | Kathrein-Werke Kg | Adaptive antenna array wireless data access point |
JP2001168777A (ja) | 1999-12-06 | 2001-06-22 | Matsushita Electric Ind Co Ltd | 通信端末装置及び無線通信方法 |
KR100663559B1 (ko) | 1999-12-31 | 2007-01-02 | 삼성전자주식회사 | 부호분할 다중접속 통신시스템의 동기형 복조 장치 및 방법 |
JP3478242B2 (ja) * | 2000-05-18 | 2003-12-15 | 日本電気株式会社 | Cdma移動通信システムの移動機 |
US6748024B2 (en) * | 2001-03-28 | 2004-06-08 | Nokia Corporation | Non-zero complex weighted space-time code for multiple antenna transmission |
US6785250B2 (en) * | 2001-07-09 | 2004-08-31 | Qualcomm Incorporated | Method and apparatus for time-sharing channelization code in a CDMA communication system |
-
2001
- 2001-07-19 US US09/908,963 patent/US7174178B2/en not_active Expired - Fee Related
-
2002
- 2002-05-30 TW TW91111541A patent/TW574793B/zh not_active IP Right Cessation
- 2002-06-05 SG SG200203330A patent/SG125901A1/en unknown
- 2002-07-04 KR KR1020020038608A patent/KR100654282B1/ko not_active IP Right Cessation
- 2002-07-12 EP EP02752338A patent/EP1410528B1/de not_active Expired - Lifetime
- 2002-07-12 AT AT02752338T patent/ATE323977T1/de not_active IP Right Cessation
- 2002-07-12 DE DE60210777T patent/DE60210777T2/de not_active Expired - Lifetime
- 2002-07-12 WO PCT/US2002/022389 patent/WO2003009493A1/en not_active Application Discontinuation
- 2002-07-19 JP JP2002211679A patent/JP3790723B2/ja not_active Expired - Fee Related
- 2002-07-19 CN CNB021265259A patent/CN1181634C/zh not_active Expired - Fee Related
Also Published As
Publication number | Publication date |
---|---|
WO2003009493A1 (en) | 2003-01-30 |
CN1399436A (zh) | 2003-02-26 |
KR20030009140A (ko) | 2003-01-29 |
TW574793B (en) | 2004-02-01 |
SG125901A1 (en) | 2006-10-30 |
EP1410528B1 (de) | 2006-04-19 |
US7174178B2 (en) | 2007-02-06 |
JP2003143065A (ja) | 2003-05-16 |
KR100654282B1 (ko) | 2006-12-05 |
CN1181634C (zh) | 2004-12-22 |
EP1410528A1 (de) | 2004-04-21 |
ATE323977T1 (de) | 2006-05-15 |
JP3790723B2 (ja) | 2006-06-28 |
US20030017835A1 (en) | 2003-01-23 |
DE60210777T2 (de) | 2007-04-19 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
DE60210777D1 (de) | Kanalprädiktion bei der sende-diversity mit geschlossener schleife | |
HK1088448A1 (en) | Using beamforming and closed loop transmit diversity in a multi-beam antenna system | |
EP3394990B1 (de) | Betrieb eines drahtlosen kommunikationssystems | |
DE60312491D1 (de) | Verbesserte diversitäts-funkkommunikationsvorrichtung | |
WO1998018271A3 (en) | Wireless communication network using time-varying vector channel equalization for adaptive spatial equalization | |
ATE357087T1 (de) | Funkkommunikationssystem | |
DE60330092D1 (de) | Drahtlose Kommunikation mit Sende- und Empfangsdiversität | |
IL158986A0 (en) | Communication device with smart antenna using a quality-indication signal | |
TW200620869A (en) | Asymmetrical MIMO wireless communications | |
EP2070207A4 (de) | Verstärker mit dualer mpfänger- oder senderantennenkonfiguration mit adaption für erhöhte isolation | |
EP1353452A3 (de) | Mobiles Kommunicationsgerät mit mehreren Sende- und Empfangsantennen und mobiles Kommunicationsverfahren dafür | |
WO2006014661A3 (en) | Multi-connection, non-simultaneous frequency diversity in radio communication systems | |
WO2002082689A3 (en) | Feedback method for controlling a multiple-input, multiple-output communications channel | |
DE60225263D1 (de) | Funkkommunikationssystem | |
TW200709593A (en) | RF transceiver having adaptive modulation | |
GB0719136D0 (en) | communications apparatus | |
KR100913660B1 (ko) | Gps 가능 무선 통신을 제공하는 장치 및 방법 | |
US20090275283A1 (en) | Use of intra-body communication | |
RU2009133915A (ru) | Система и способ переключения хэндовера между беспроводными системами связи | |
WO2007067284A3 (en) | Method and system for creating beamformed channels in a multi-input multi-output network | |
TW200737596A (en) | A wireless communications device with improved antenna adaptivity | |
WO2002005452A3 (en) | Short range rf network | |
BR9906705A (pt) | Processo e dispositivo de comunicação de canal para um sistema de comunicação móvel usando diversidade de antena de transmissão, processo para selecionar, em uma estação móvel, uma antena de transmissão em uma estação base em um sistema de comunicação móvel usando diversidade de antena de transmissão, e, dispositivo de estação base | |
CA2272423A1 (en) | Mobile station apparatus and its open loop transmission power control method in wireless communication system | |
CY1107522T1 (el) | Eνα συστημα ραδιοεπικοινωνιας, μεθοδος λειτουργιας ενος συστηματος επικοινωνιας και ενας κινητος σταθμος |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
8364 | No opposition during term of opposition |