ATE549834T1 - Kanalschätzungsrückmeldung in einem orthogonal- frequenzmultiplex-system oder dergleichen - Google Patents
Kanalschätzungsrückmeldung in einem orthogonal- frequenzmultiplex-system oder dergleichenInfo
- Publication number
- ATE549834T1 ATE549834T1 AT04784291T AT04784291T ATE549834T1 AT E549834 T1 ATE549834 T1 AT E549834T1 AT 04784291 T AT04784291 T AT 04784291T AT 04784291 T AT04784291 T AT 04784291T AT E549834 T1 ATE549834 T1 AT E549834T1
- Authority
- AT
- Austria
- Prior art keywords
- orthogonal frequency
- channel estimate
- multiplex system
- frequency multiplex
- estimate feedback
- Prior art date
Links
Classifications
-
- 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
- H04B7/0626—Channel coefficients, e.g. channel state information [CSI]
-
- 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
- H04B7/0636—Feedback format
-
- 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
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L27/00—Modulated-carrier systems
- H04L27/26—Systems using multi-frequency codes
- H04L27/2601—Multicarrier modulation systems
Landscapes
- Engineering & Computer Science (AREA)
- Computer Networks & Wireless Communication (AREA)
- Signal Processing (AREA)
- Power Engineering (AREA)
- Mobile Radio Communication Systems (AREA)
- Data Exchanges In Wide-Area Networks (AREA)
- Transmitters (AREA)
- Amplifiers (AREA)
- Channel Selection Circuits, Automatic Tuning Circuits (AREA)
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US10/665,939 US7639643B2 (en) | 2003-09-17 | 2003-09-17 | Channel estimation feedback in an orthogonal frequency division multiplexing system or the like |
PCT/US2004/030385 WO2005029804A2 (en) | 2003-09-17 | 2004-09-15 | Channel estimation feedback in an orthogonal frequency division multiplexing system or the like |
Publications (1)
Publication Number | Publication Date |
---|---|
ATE549834T1 true ATE549834T1 (de) | 2012-03-15 |
Family
ID=34274692
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
AT04784291T ATE549834T1 (de) | 2003-09-17 | 2004-09-15 | Kanalschätzungsrückmeldung in einem orthogonal- frequenzmultiplex-system oder dergleichen |
Country Status (8)
Country | Link |
---|---|
US (2) | US7639643B2 (de) |
EP (1) | EP1665705B1 (de) |
CN (1) | CN1853392B (de) |
AT (1) | ATE549834T1 (de) |
HK (1) | HK1084534A1 (de) |
MY (1) | MY143345A (de) |
TW (1) | TWI259689B (de) |
WO (1) | WO2005029804A2 (de) |
Families Citing this family (28)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US7639643B2 (en) * | 2003-09-17 | 2009-12-29 | Intel Corporation | Channel estimation feedback in an orthogonal frequency division multiplexing system or the like |
KR20050081566A (ko) * | 2004-02-14 | 2005-08-19 | 삼성전자주식회사 | 고속 순방향 패킷 데이터를 전송하는 이동통신시스템에서압축 모드에 따른 복합 재전송을 수행하는 방법 |
EP1594259A1 (de) * | 2004-05-07 | 2005-11-09 | Infineon Technologies AG | Erweiterung von Initierungsnachrichten zum Verbessern der Kanalschätzung |
KR20060046335A (ko) * | 2004-06-01 | 2006-05-17 | 삼성전자주식회사 | 산술코딩을 이용한 채널 상태 정보 피드백을 위한 장치 및방법 |
US7570696B2 (en) | 2004-06-25 | 2009-08-04 | Intel Corporation | Multiple input multiple output multicarrier communication system and methods with quantized beamforming feedback |
US7649861B2 (en) | 2004-11-30 | 2010-01-19 | Intel Corporation | Multiple antenna multicarrier communication system and method with reduced mobile-station processing |
US7822128B2 (en) | 2004-12-03 | 2010-10-26 | Intel Corporation | Multiple antenna multicarrier transmitter and method for adaptive beamforming with transmit-power normalization |
EP1699197A1 (de) * | 2005-01-27 | 2006-09-06 | Alcatel | Verfahren und Geräte zur Rückmeldung von Kanalqualitätsinformation in einem Mehrträgerfunkkommunikationssystem |
GB2423437B (en) * | 2005-02-16 | 2007-06-13 | Toshiba Res Europ Ltd | Communications system, method and device |
DE102005038122B4 (de) * | 2005-08-11 | 2009-01-29 | Nokia Siemens Networks Gmbh & Co.Kg | Verfahren und Anordnung zur Vorverzerrung eines Basisband-Eingangssignals |
US7907911B2 (en) * | 2005-08-16 | 2011-03-15 | Alcatel-Lucent Usa Inc. | Scheduling multi-user transmission in the downlink of a multi-antenna wireless communication system |
DE602005010592D1 (de) * | 2005-11-15 | 2008-12-04 | Alcatel Lucent | Verfahren zur Übertragung von Kanalqualitätsinformationen in einem Multiträger-Funkkommunikationssystem und entsprechende Mobilstation und Basisstation |
WO2007094832A2 (en) * | 2005-11-17 | 2007-08-23 | The University Of Connecticut | Recursive and trellis-based feedback reduction for mimo-ofdm with rate-limited feedback |
US20070153731A1 (en) * | 2006-01-05 | 2007-07-05 | Nadav Fine | Varying size coefficients in a wireless local area network return channel |
US7764750B2 (en) * | 2006-03-17 | 2010-07-27 | Intel Corporation | Phase correlator for wireless receiver and method for correlating using phase-quantized signals |
WO2007136289A1 (en) * | 2006-05-23 | 2007-11-29 | Intel Corporation | Millimeter-wave chip-lens array antenna systems for wireless networks |
US8149178B2 (en) * | 2006-05-23 | 2012-04-03 | Intel Corporation | Millimeter-wave communication system with directional antenna and one or more millimeter-wave reflectors |
US8320942B2 (en) * | 2006-06-13 | 2012-11-27 | Intel Corporation | Wireless device with directional antennas for use in millimeter-wave peer-to-peer networks and methods for adaptive beam steering |
US8213368B2 (en) * | 2007-07-13 | 2012-07-03 | Telefonaktiebolaget Lm Ericsson (Publ) | Adaptive compression of channel feedback based on second order channel statistics |
FI20075864A0 (fi) * | 2007-11-30 | 2007-11-30 | Nokia Corp | Laite, tietokoneohjelma ja menetelmä |
WO2009130913A1 (ja) * | 2008-04-25 | 2009-10-29 | パナソニック株式会社 | 無線通信装置および量子化方法 |
EP2327170A4 (de) * | 2008-09-18 | 2014-10-22 | Commw Scient Ind Res Org | Vektorquantisierung in drahtloser kommunikation |
CN101562469B (zh) * | 2009-06-01 | 2012-11-14 | 中国科学技术大学 | 一种多用户多入多出模拟反馈系统中的部分用户反馈方法 |
US20110310870A1 (en) * | 2010-06-21 | 2011-12-22 | Qualcomm Incorporated | Hybrid time and frequency domain csi feedback scheme |
EP2501068B1 (de) * | 2011-03-14 | 2016-02-10 | Alcatel Lucent | Bereitstellung von Kanalstatusinformationen über einen Radiokanal |
US8908587B2 (en) | 2012-03-14 | 2014-12-09 | Xiao-an Wang | Channel feedback in OFDM systems |
US9161376B2 (en) * | 2013-08-20 | 2015-10-13 | Cisco Technology, Inc. | System and method for managing access point communication channel utilization |
EP3682568B1 (de) * | 2017-09-28 | 2023-11-29 | Huawei Technologies Co., Ltd. | Vorrichtung und verfahren zum komprimieren und / oder dekomprimieren von kanalzustandsinformationen |
Family Cites Families (14)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
ATE367702T1 (de) | 2000-02-22 | 2007-08-15 | Koninkl Philips Electronics Nv | Mehrträgerempfänger mit kanalschätzer |
DE60029012T2 (de) * | 2000-03-15 | 2006-12-07 | Nokia Corp. | Verfahren und vorrichtung für sende-diversity |
US7106709B2 (en) * | 2000-11-29 | 2006-09-12 | Telefonaktiebologet Lm Ericsson (Publ) | Timing drift compensation in wireless packet-based systems |
US7139321B2 (en) * | 2001-03-08 | 2006-11-21 | Regents Of The University Of Minnesota | Channel estimation for wireless OFDM systems |
US7042856B2 (en) * | 2001-05-03 | 2006-05-09 | Qualcomm, Incorporation | Method and apparatus for controlling uplink transmissions of a wireless communication system |
US6785341B2 (en) * | 2001-05-11 | 2004-08-31 | Qualcomm Incorporated | Method and apparatus for processing data in a multiple-input multiple-output (MIMO) communication system utilizing channel state information |
EP1289179A1 (de) * | 2001-08-28 | 2003-03-05 | Lucent Technologies Inc. | Drahtloses Kommunikationsnetz, Benutzerterminal dafür, Basisstation dafür, und ein Telekommunikationsverfahren |
US7164649B2 (en) * | 2001-11-02 | 2007-01-16 | Qualcomm, Incorporated | Adaptive rate control for OFDM communication system |
US7012883B2 (en) * | 2001-11-21 | 2006-03-14 | Qualcomm Incorporated | Rate selection for an OFDM system |
US7209433B2 (en) * | 2002-01-07 | 2007-04-24 | Hitachi, Ltd. | Channel estimation and compensation techniques for use in frequency division multiplexed systems |
TWI259674B (en) * | 2002-05-07 | 2006-08-01 | Interdigital Tech Corp | Method and apparatus for reducing transmission errors in a third generation cellular system |
US7436757B1 (en) * | 2002-06-21 | 2008-10-14 | Nortel Networks Limited | Scattered pilot and filtering for channel estimation |
US20040005010A1 (en) * | 2002-07-05 | 2004-01-08 | National University Of Singapore | Channel estimator and equalizer for OFDM systems |
US7639643B2 (en) | 2003-09-17 | 2009-12-29 | Intel Corporation | Channel estimation feedback in an orthogonal frequency division multiplexing system or the like |
-
2003
- 2003-09-17 US US10/665,939 patent/US7639643B2/en active Active
-
2004
- 2004-09-08 MY MYPI20043652A patent/MY143345A/en unknown
- 2004-09-15 EP EP04784291A patent/EP1665705B1/de active Active
- 2004-09-15 AT AT04784291T patent/ATE549834T1/de active
- 2004-09-15 WO PCT/US2004/030385 patent/WO2005029804A2/en active Application Filing
- 2004-09-15 CN CN2004800266851A patent/CN1853392B/zh active Active
- 2004-09-16 TW TW093128043A patent/TWI259689B/zh active
-
2006
- 2006-06-10 HK HK06106671.7A patent/HK1084534A1/xx unknown
-
2009
- 2009-12-29 US US12/649,058 patent/US8040847B2/en not_active Expired - Lifetime
Also Published As
Publication number | Publication date |
---|---|
US8040847B2 (en) | 2011-10-18 |
US20050058095A1 (en) | 2005-03-17 |
HK1084534A1 (en) | 2006-07-28 |
WO2005029804A2 (en) | 2005-03-31 |
EP1665705A2 (de) | 2006-06-07 |
CN1853392A (zh) | 2006-10-25 |
TW200524355A (en) | 2005-07-16 |
EP1665705B1 (de) | 2012-03-14 |
CN1853392B (zh) | 2012-04-18 |
US20100195485A1 (en) | 2010-08-05 |
WO2005029804A3 (en) | 2005-06-23 |
MY143345A (en) | 2011-04-29 |
US7639643B2 (en) | 2009-12-29 |
TWI259689B (en) | 2006-08-01 |
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