SG125901A1 - Deriving a more accurate estimate from prediction data in closed loop transmit diversity modes - Google Patents
Deriving a more accurate estimate from prediction data in closed loop transmit diversity modesInfo
- Publication number
- SG125901A1 SG125901A1 SG200203330A SG200203330A SG125901A1 SG 125901 A1 SG125901 A1 SG 125901A1 SG 200203330 A SG200203330 A SG 200203330A SG 200203330 A SG200203330 A SG 200203330A SG 125901 A1 SG125901 A1 SG 125901A1
- Authority
- SG
- Singapore
- Prior art keywords
- channel
- closed loop
- base station
- transmit diversity
- loop transmit
- Prior art date
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
Applications Claiming Priority (1)
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 |
Publications (1)
Publication Number | Publication Date |
---|---|
SG125901A1 true SG125901A1 (en) | 2006-10-30 |
Family
ID=25426439
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
SG200203330A SG125901A1 (en) | 2001-07-19 | 2002-06-05 | Deriving a more accurate estimate from prediction data in closed loop transmit diversity modes |
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)
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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 |
EP1263168B1 (de) * | 2001-05-29 | 2006-06-28 | 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 |
CN1269330C (zh) * | 2002-03-22 | 2006-08-09 | 华为技术有限公司 | 一种自适应加权空时发射分集方法及其系统 |
CN100452677C (zh) * | 2002-04-03 | 2009-01-14 | 日本电气株式会社 | 移动通信系统、移动台、基站及它们所用的通信路径质量估算方法 |
JP4549847B2 (ja) | 2002-05-17 | 2010-09-22 | イエール ユニバーシティ | 肝炎の治療方法 |
KR100640470B1 (ko) * | 2002-06-29 | 2006-10-30 | 삼성전자주식회사 | 패킷 서비스 통신 시스템에서 전송 안테나 다이버시티방식을 사용하여 데이터를 전송 장치 및 방법 |
CN1709001B (zh) * | 2002-11-01 | 2010-04-14 | 美商内数位科技公司 | 无线通信系统信道品质预测的方法 |
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 |
US8073404B2 (en) * | 2004-09-17 | 2011-12-06 | Ntt Docomo, Inc. | Mobile communication method, mobile station and base station |
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 |
US7706453B2 (en) * | 2005-09-20 | 2010-04-27 | Via Telecom Co., Ltd. | Iterative channel prediction |
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 |
EP1871023B1 (de) * | 2006-06-23 | 2008-12-17 | Mitsubishi Electric Information Technology Centre Europe B.V. | 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 |
CN110809860B (zh) * | 2017-06-27 | 2022-09-02 | 瑞典爱立信有限公司 | 确定用于无线电收发机装置的复权向量 |
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 |
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KR19990053963A (ko) * | 1997-12-24 | 1999-07-15 | 정태기 | 최적 기지국 자동 탐색형 중계기용 스마트 안테나 및 복사 패턴생성 방법 |
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CN100380842C (zh) | 1999-06-23 | 2008-04-09 | 日本国立北海道大学学长 | 无线装置 |
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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 DE DE60210777T patent/DE60210777T2/de not_active Expired - Lifetime
- 2002-07-12 AT AT02752338T patent/ATE323977T1/de not_active IP Right Cessation
- 2002-07-12 EP EP02752338A patent/EP1410528B1/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 |
---|---|
CN1399436A (zh) | 2003-02-26 |
KR20030009140A (ko) | 2003-01-29 |
JP2003143065A (ja) | 2003-05-16 |
TW574793B (en) | 2004-02-01 |
EP1410528B1 (de) | 2006-04-19 |
ATE323977T1 (de) | 2006-05-15 |
JP3790723B2 (ja) | 2006-06-28 |
CN1181634C (zh) | 2004-12-22 |
DE60210777T2 (de) | 2007-04-19 |
DE60210777D1 (de) | 2006-05-24 |
WO2003009493A1 (en) | 2003-01-30 |
US7174178B2 (en) | 2007-02-06 |
US20030017835A1 (en) | 2003-01-23 |
KR100654282B1 (ko) | 2006-12-05 |
EP1410528A1 (de) | 2004-04-21 |
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