DE602005047993D1 - Verfahren und System zur Austausch der MIMO Kanälenmessung - Google Patents
Verfahren und System zur Austausch der MIMO KanälenmessungInfo
- Publication number
- DE602005047993D1 DE602005047993D1 DE200560047993 DE602005047993T DE602005047993D1 DE 602005047993 D1 DE602005047993 D1 DE 602005047993D1 DE 200560047993 DE200560047993 DE 200560047993 DE 602005047993 T DE602005047993 T DE 602005047993T DE 602005047993 D1 DE602005047993 D1 DE 602005047993D1
- Authority
- DE
- Germany
- Prior art keywords
- channel measurement
- mimo channel
- measurement exchange
- exchange
- mimo
- 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.)
- Active
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
- H04B7/0413—MIMO systems
- H04B7/0417—Feedback systems
-
- 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
- H04B7/0413—MIMO systems
- H04B7/0426—Power distribution
-
- 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
- H04B7/0621—Feedback content
- H04B7/063—Parameters other than those covered in groups H04B7/0623 - H04B7/0634, e.g. channel matrix rank or transmit mode selection
-
- 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
- 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
- H04B7/0658—Feedback reduction
- H04B7/0663—Feedback reduction using vector or matrix manipulations
-
- 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
- H04B7/0686—Hybrid systems, i.e. switching and simultaneous transmission
- H04B7/0689—Hybrid systems, i.e. switching and simultaneous transmission using different transmission schemes, at least one of them being a diversity transmission scheme
-
- 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
- H04B7/0686—Hybrid systems, i.e. switching and simultaneous transmission
- H04B7/0691—Hybrid systems, i.e. switching and simultaneous transmission using subgroups of transmit antennas
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L1/00—Arrangements for detecting or preventing errors in the information received
- H04L1/0001—Systems modifying transmission characteristics according to link quality, e.g. power backoff
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L1/00—Arrangements for detecting or preventing errors in the information received
- H04L1/0001—Systems modifying transmission characteristics according to link quality, e.g. power backoff
- H04L1/0023—Systems modifying transmission characteristics according to link quality, e.g. power backoff characterised by the signalling
- H04L1/0025—Transmission of mode-switching indication
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L1/00—Arrangements for detecting or preventing errors in the information received
- H04L1/0001—Systems modifying transmission characteristics according to link quality, e.g. power backoff
- H04L1/0023—Systems modifying transmission characteristics according to link quality, e.g. power backoff characterised by the signalling
- H04L1/0028—Formatting
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L1/00—Arrangements for detecting or preventing errors in the information received
- H04L1/0001—Systems modifying transmission characteristics according to link quality, e.g. power backoff
- H04L1/0023—Systems modifying transmission characteristics according to link quality, e.g. power backoff characterised by the signalling
- H04L1/0028—Formatting
- H04L1/0029—Reduction of the amount of signalling, e.g. retention of useful signalling or differential signalling
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L1/00—Arrangements for detecting or preventing errors in the information received
- H04L1/02—Arrangements for detecting or preventing errors in the information received by diversity reception
- H04L1/06—Arrangements for detecting or preventing errors in the information received by diversity reception using space diversity
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L1/00—Arrangements for detecting or preventing errors in the information received
- H04L1/02—Arrangements for detecting or preventing errors in the information received by diversity reception
- H04L1/06—Arrangements for detecting or preventing errors in the information received by diversity reception using space diversity
- H04L1/0618—Space-time coding
- H04L1/0675—Space-time coding characterised by the signaling
- H04L1/0681—Space-time coding characterised by the signaling adapting space time parameters, i.e. modifying the space time matrix
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L1/00—Arrangements for detecting or preventing errors in the information received
- H04L1/02—Arrangements for detecting or preventing errors in the information received by diversity reception
- H04L1/06—Arrangements for detecting or preventing errors in the information received by diversity reception using space diversity
- H04L1/0618—Space-time coding
- H04L1/0675—Space-time coding characterised by the signaling
- H04L1/0693—Partial feedback, e.g. partial channel state information [CSI]
Landscapes
- Engineering & Computer Science (AREA)
- Computer Networks & Wireless Communication (AREA)
- Signal Processing (AREA)
- Physics & Mathematics (AREA)
- Mathematical Physics (AREA)
- Quality & Reliability (AREA)
- Power Engineering (AREA)
- Mobile Radio Communication Systems (AREA)
- Radio Transmission System (AREA)
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US63625504P | 2004-12-14 | 2004-12-14 | |
US11/052,353 US7564914B2 (en) | 2004-12-14 | 2005-02-07 | Method and system for frame formats for MIMO channel measurement exchange |
Publications (1)
Publication Number | Publication Date |
---|---|
DE602005047993D1 true DE602005047993D1 (de) | 2006-06-21 |
Family
ID=35539596
Family Applications (4)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
DE200560047993 Active DE602005047993D1 (de) | 2004-12-14 | 2005-09-15 | Verfahren und System zur Austausch der MIMO Kanälenmessung |
DE202005022074U Expired - Lifetime DE202005022074U1 (de) | 2004-12-14 | 2005-09-15 | System und Vorrichtung für Rahmenformate für denAustausch von MIMO-Kanalmessungen |
DE602005056512.4A Active DE602005056512C5 (de) | 2004-12-14 | 2005-09-15 | Verfahren und System für Rahmenformate für MIMO-Kanalmessaustausch |
DE202005022049U Expired - Lifetime DE202005022049U1 (de) | 2004-12-14 | 2005-09-15 | System und Vorrichtung für Rahmenformate für den Austausch von MIMO-Kanalmessungen |
Family Applications After (3)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
DE202005022074U Expired - Lifetime DE202005022074U1 (de) | 2004-12-14 | 2005-09-15 | System und Vorrichtung für Rahmenformate für denAustausch von MIMO-Kanalmessungen |
DE602005056512.4A Active DE602005056512C5 (de) | 2004-12-14 | 2005-09-15 | Verfahren und System für Rahmenformate für MIMO-Kanalmessaustausch |
DE202005022049U Expired - Lifetime DE202005022049U1 (de) | 2004-12-14 | 2005-09-15 | System und Vorrichtung für Rahmenformate für den Austausch von MIMO-Kanalmessungen |
Country Status (5)
Country | Link |
---|---|
US (4) | US7564914B2 (de) |
EP (3) | EP2523381B1 (de) |
CN (1) | CN1790943B (de) |
DE (4) | DE602005047993D1 (de) |
TW (1) | TWI324452B (de) |
Families Citing this family (56)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US7646703B2 (en) | 2004-07-27 | 2010-01-12 | Broadcom Corporation | Backward-compatible long training sequences for wireless communication networks |
GB2418104B (en) * | 2004-09-09 | 2007-03-28 | Toshiba Res Europ Ltd | An uplink interference cancelling CDMA base station uses the transmission timing of a new mobile station compared with that of other mobile stations |
CN1838653A (zh) * | 2005-03-24 | 2006-09-27 | 松下电器产业株式会社 | 低功耗通信装置、低功耗多天线通信系统及其操作方法 |
US7602855B2 (en) * | 2005-04-01 | 2009-10-13 | Interdigital Technology Corporation | Method and apparatus for singular value decomposition of a channel matrix |
US7844232B2 (en) * | 2005-05-25 | 2010-11-30 | Research In Motion Limited | Joint space-time optimum filters (JSTOF) with at least one antenna, at least one channel, and joint filter weight and CIR estimation |
CA2515997A1 (en) * | 2005-08-15 | 2007-02-15 | Research In Motion Limited | Implementation of joint space-time optimum filters (jstof) using qr and eigenvalue decompositions |
US20070037541A1 (en) * | 2005-08-15 | 2007-02-15 | Research In Motion Limited | Wireless Communications Device Including a Joint Space-Time Optimum Filter (JSTOF) Using Cholesky and Eigenvalue Decompositions |
WO2007029314A1 (ja) * | 2005-09-06 | 2007-03-15 | Fujitsu Limited | 無線通信制御装置および無線装置 |
KR100895992B1 (ko) * | 2005-09-16 | 2009-05-07 | 삼성전자주식회사 | 다중 안테나를 사용하는 무선통신시스템에서 안테나 개수를확장하기 위한 장치 및 방법 |
US8200164B2 (en) * | 2005-12-01 | 2012-06-12 | Intel Corporation | Wireless communication system, associated methods and data structures |
KR100923912B1 (ko) * | 2006-03-06 | 2009-10-28 | 삼성전자주식회사 | 다중 안테나 시스템에서 스케줄링을 위한 채널 상태 정보피드백 장치 및 방법 |
GB2438663B (en) * | 2006-06-01 | 2008-10-29 | Toshiba Res Europ Ltd | Wireless communication apparatus |
US8233556B2 (en) * | 2006-07-19 | 2012-07-31 | Texas Instruments Incorporated | Reduced feedback transmit beamforming |
US8929472B1 (en) | 2006-07-26 | 2015-01-06 | Marvell International Ltd. | Bit-level combining for MIMO systems with HARQ and/or repetition coding |
US8718166B2 (en) | 2006-08-08 | 2014-05-06 | Marvell World Trade Ltd. | Maximal ratio combining of equalized symbols for MIMO systems with HARQ and/or repetition coding |
TW200824378A (en) * | 2006-08-17 | 2008-06-01 | Interdigital Tech Corp | Method and apparatus for reducing a peak-to-average power ratio in a multiple-input multiple-output system |
US7729439B2 (en) | 2006-09-18 | 2010-06-01 | Marvell World Trade Ltd. | Calibration correction for implicit beamforming in a wireless MIMO communication system |
US20080139153A1 (en) * | 2006-12-12 | 2008-06-12 | Hong Kong Applied Science And Technology Research Institute Co., Ltd. | Antenna configuration selection using outdated channel state information |
US8031795B2 (en) * | 2006-12-12 | 2011-10-04 | Hong Kong Applied Science And Technology Research Institute Co., Ltd. | Pre-processing systems and methods for MIMO antenna systems |
GB2447675B (en) * | 2007-03-20 | 2009-06-24 | Toshiba Res Europ Ltd | Wireless communication apparatus |
US8130864B1 (en) * | 2007-04-03 | 2012-03-06 | Marvell International Ltd. | System and method of beamforming with reduced feedback |
KR100986938B1 (ko) * | 2007-04-26 | 2010-10-12 | 재단법인서울대학교산학협력재단 | 다중 입력 다중 출력 시스템의 부분 적응 송신 장치 및 방법 |
US8194774B2 (en) * | 2007-10-12 | 2012-06-05 | Broadcom Corporation | Method of a receiver estimating a plurality of channels |
CN101431356B (zh) * | 2007-11-07 | 2012-12-19 | 中兴通讯股份有限公司 | 基于预编码的发射机、发射方法、及数据传输系统 |
CN101494489B (zh) * | 2008-01-24 | 2012-07-18 | 中兴通讯股份有限公司 | 基于时分双工系统的预编码多天线输入输出系统和方法 |
JP5009826B2 (ja) * | 2008-01-30 | 2012-08-22 | 京セラ株式会社 | 無線通信システム、無線通信装置および通信制御方法 |
CN103560871B (zh) * | 2008-04-25 | 2017-03-22 | 夏普株式会社 | 基站装置、移动台装置以及通信方法 |
KR101289944B1 (ko) | 2008-12-12 | 2013-07-26 | 엘지전자 주식회사 | 초고처리율 무선랜 시스템에서 채널 추정 방법 및 이를 위한 장치 |
JP2012516586A (ja) * | 2009-02-01 | 2012-07-19 | ▲ホア▼▲ウェイ▼技術有限公司 | ユーザ装置アクセス向けの方法および対応するシステム、ならびにネットワークアクセス装置 |
US9172455B2 (en) * | 2009-02-13 | 2015-10-27 | Qualcomm Incorporated | Start frame for distributed MIMO |
KR101559295B1 (ko) | 2009-12-04 | 2015-10-12 | 삼성전자주식회사 | 공간 분할 다중 사용자 다중 입력 다중 출력 방식을 이용하는 통신 시스템 |
US8594216B2 (en) | 2010-08-25 | 2013-11-26 | Qualcomm Incorporated | Beamforming feedback options for MU-MIMO |
EP2628257B1 (de) * | 2010-10-11 | 2018-12-12 | MediaTek Singapore Pte Ltd. | Mimo-kanalmatrix-rückkopplung in ofdm-systemen |
US8908600B2 (en) | 2010-10-26 | 2014-12-09 | Qualcomm Incorporated | Channel state information feedback frame format and feedback rules for very high throughput wireless systems |
CN102457319B (zh) * | 2010-10-28 | 2014-04-09 | 中兴通讯股份有限公司 | 业务数据下发方法和装置 |
US9130631B2 (en) | 2010-11-03 | 2015-09-08 | Qualcomm Incorporated | Beamforming feedback format |
US20120140842A1 (en) * | 2010-12-06 | 2012-06-07 | Qualcomm Incorporated | Signaling to protect advanced receiver performance in wireless local area networks (lans) |
US9154969B1 (en) | 2011-09-29 | 2015-10-06 | Marvell International Ltd. | Wireless device calibration for implicit transmit |
US9037197B2 (en) * | 2011-10-14 | 2015-05-19 | Empire Technology Development Llc | Mobile terminal, power transfer system and computer-readable storage medium |
DE102011120827B4 (de) * | 2011-12-13 | 2019-03-21 | Andrew Wireless Systems Gmbh | Kommunikationsnetzwerk |
CN103378888B (zh) * | 2012-04-24 | 2016-08-10 | 华为技术有限公司 | 下行波束赋形方法及设备 |
US8896521B2 (en) | 2012-04-24 | 2014-11-25 | Qualcomm Mems Technologies, Inc. | Metal-insulator-metal capacitors on glass substrates |
US8976761B2 (en) | 2012-10-05 | 2015-03-10 | Cisco Technology, Inc. | High density deployment using transmit or transmit-receive interference suppression with selective channel dimension reduction/attenuation and other parameters |
US9312933B2 (en) * | 2013-02-22 | 2016-04-12 | Qualcomm Incorporated | Apparatus and method for dynamically altering a downlink MIMO configuration |
US9661579B1 (en) | 2013-05-03 | 2017-05-23 | Marvell International Ltd. | Per-tone power control in OFDM |
US9843097B1 (en) | 2013-07-08 | 2017-12-12 | Marvell International Ltd. | MIMO implicit beamforming techniques |
CN103684564A (zh) * | 2013-12-23 | 2014-03-26 | 北京大学 | 基于多天线的同频同时双工的通信方法和系统 |
CN104168236B (zh) * | 2014-07-31 | 2018-04-06 | 上海翎沃电子科技有限公司 | 一种同频全时隙双向传输的方法 |
US9788281B2 (en) | 2014-09-25 | 2017-10-10 | Cisco Technology, Inc. | Triggering client device probing behavior for location applications |
US10165540B2 (en) | 2014-09-25 | 2018-12-25 | Cisco Technology, Inc. | Removing client devices from association with a wireless access point |
CN106301507B (zh) * | 2015-05-18 | 2019-09-13 | 工业和信息化部电信传输研究所 | 一种信道状态信息测量反馈方法 |
CN108111204B (zh) * | 2017-12-28 | 2021-08-03 | 浙江中智海通信科技有限公司 | 无线数据通信多天线协同发射机架构及其信号发射方法 |
US10644771B2 (en) * | 2018-06-08 | 2020-05-05 | University Of South Florida | Using artificial signals to maximize capacity and secrecy of multiple-input multiple-output (MIMO) communication |
US10516452B1 (en) * | 2018-06-08 | 2019-12-24 | University Of South Florida | Using artificial signals to maximize capacity and secrecy of multiple-input multiple-output (MIMO) communication |
US20200136700A1 (en) * | 2018-10-31 | 2020-04-30 | Huawei Technologies Co., Ltd. | Channel Prediction for Adaptive Channel State Information (CSI) Feedback Overhead Reduction |
CN113115337B (zh) * | 2021-04-12 | 2023-08-01 | 中国电子科技集团公司第三十四研究所 | 一种基于mimo的5g多模终端传输控制方法及装置 |
Family Cites Families (19)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US6802035B2 (en) | 2000-09-19 | 2004-10-05 | Intel Corporation | System and method of dynamically optimizing a transmission mode of wirelessly transmitted information |
FI20010079A (fi) * | 2001-01-12 | 2002-07-13 | Nokia Corp | Paikannusmenetelmä ja radiojärjestelmä |
US7027523B2 (en) * | 2001-06-22 | 2006-04-11 | Qualcomm Incorporated | Method and apparatus for transmitting data in a time division duplexed (TDD) communication system |
ATE398363T1 (de) * | 2002-01-29 | 2008-07-15 | Nokia Corp | Datentransferverfahren in einem funksystem |
DE10228103A1 (de) | 2002-06-24 | 2004-01-15 | Bayer Cropscience Ag | Fungizide Wirkstoffkombinationen |
US6754475B1 (en) * | 2002-06-28 | 2004-06-22 | Motorola, Inc. | Transmission performance measurement and use thereof |
DE60325921D1 (de) * | 2002-08-22 | 2009-03-12 | Imec Inter Uni Micro Electr | Verfahren zur MIMO-Übertragung für mehrere Benutzer und entsprechende Vorrichtungen |
US8218609B2 (en) * | 2002-10-25 | 2012-07-10 | Qualcomm Incorporated | Closed-loop rate control for a multi-channel communication system |
US8134976B2 (en) | 2002-10-25 | 2012-03-13 | Qualcomm Incorporated | Channel calibration for a time division duplexed communication system |
US7327795B2 (en) * | 2003-03-31 | 2008-02-05 | Vecima Networks Inc. | System and method for wireless communication systems |
KR100591890B1 (ko) * | 2003-04-01 | 2006-06-20 | 한국전자통신연구원 | 다중 안테나 무선 통신 시스템에서의 적응 송수신 방법 및그 장치 |
US7640373B2 (en) * | 2003-04-25 | 2009-12-29 | Motorola, Inc. | Method and apparatus for channel quality feedback within a communication system |
JP4546177B2 (ja) * | 2003-07-28 | 2010-09-15 | パナソニック株式会社 | 無線通信装置および無線通信方法 |
US20050048933A1 (en) * | 2003-08-25 | 2005-03-03 | Jingxian Wu | Adaptive transmit diversity with quadrant phase constraining feedback |
US7206550B2 (en) * | 2003-12-29 | 2007-04-17 | Intel Corporation | Antenna subsystem calibration apparatus and methods in spatial-division multiple-access systems |
US7676007B1 (en) * | 2004-07-21 | 2010-03-09 | Jihoon Choi | System and method for interpolation based transmit beamforming for MIMO-OFDM with partial feedback |
US7366245B2 (en) * | 2004-09-10 | 2008-04-29 | Intel Corporation | Calibration in MIMO systems |
US7289770B2 (en) * | 2004-09-28 | 2007-10-30 | Intel Corporation | Compact feedback for closed loop MIMO |
US7236748B2 (en) * | 2004-09-30 | 2007-06-26 | Intel Corporation | Closed loop feedback in MIMO systems |
-
2005
- 2005-02-07 US US11/052,353 patent/US7564914B2/en active Active
- 2005-09-15 DE DE200560047993 patent/DE602005047993D1/de active Active
- 2005-09-15 DE DE202005022074U patent/DE202005022074U1/de not_active Expired - Lifetime
- 2005-09-15 EP EP12005339.2A patent/EP2523381B1/de active Active
- 2005-09-15 EP EP05020119.3A patent/EP1672824B1/de active Active
- 2005-09-15 DE DE602005056512.4A patent/DE602005056512C5/de active Active
- 2005-09-15 DE DE202005022049U patent/DE202005022049U1/de not_active Expired - Lifetime
- 2005-09-15 EP EP12005338.4A patent/EP2523380B1/de active Active
- 2005-12-13 CN CN2005101317838A patent/CN1790943B/zh active Active
- 2005-12-14 TW TW094144307A patent/TWI324452B/zh active
-
2009
- 2009-07-20 US US12/506,053 patent/US7957450B2/en active Active
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2011
- 2011-05-03 US US13/100,014 patent/US8437419B2/en active Active
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2013
- 2013-04-04 US US13/856,708 patent/US8588283B2/en active Active
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EP1672824A2 (de) | 2006-06-21 |
TW200642346A (en) | 2006-12-01 |
DE202005022049U1 (de) | 2012-09-17 |
EP1672824A3 (de) | 2012-02-29 |
EP1672824B1 (de) | 2015-12-02 |
US20100008411A1 (en) | 2010-01-14 |
US7564914B2 (en) | 2009-07-21 |
CN1790943A (zh) | 2006-06-21 |
EP2523381A1 (de) | 2012-11-14 |
US7957450B2 (en) | 2011-06-07 |
EP2523380B1 (de) | 2018-06-20 |
EP2523381B1 (de) | 2019-12-25 |
US20130215938A1 (en) | 2013-08-22 |
US8437419B2 (en) | 2013-05-07 |
US20110222620A1 (en) | 2011-09-15 |
CN1790943B (zh) | 2012-01-11 |
DE202005022074U1 (de) | 2013-02-20 |
DE602005056512C5 (de) | 2021-06-24 |
US20060126752A1 (en) | 2006-06-15 |
EP2523380A1 (de) | 2012-11-14 |
US8588283B2 (en) | 2013-11-19 |
TWI324452B (en) | 2010-05-01 |
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