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BRPI0814945A2 - Transmissão mimo com pré-codificação espacial - Google Patents

Transmissão mimo com pré-codificação espacial

Info

Publication number
BRPI0814945A2
BRPI0814945A2 BRPI0814945-3A2A BRPI0814945A BRPI0814945A2 BR PI0814945 A2 BRPI0814945 A2 BR PI0814945A2 BR PI0814945 A BRPI0814945 A BR PI0814945A BR PI0814945 A2 BRPI0814945 A2 BR PI0814945A2
Authority
BR
Brazil
Prior art keywords
mimo transmission
space precoding
precoding
space
mimo
Prior art date
Application number
BRPI0814945-3A2A
Other languages
English (en)
Inventor
Hao Xu
Durga Prasad Malladi
Original Assignee
Qualcomm Inc
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Qualcomm Inc filed Critical Qualcomm Inc
Publication of BRPI0814945A2 publication Critical patent/BRPI0814945A2/pt

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
    • H04B7/0421—Feedback systems utilizing implicit feedback, e.g. steered pilot signals
    • 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
    • H04L25/03—Shaping networks in transmitter or receiver, e.g. adaptive shaping networks
    • H04L25/03006—Arrangements for removing intersymbol interference
    • H04L25/03343—Arrangements at the transmitter end
    • 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
    • H04B7/0456—Selection of precoding matrices or codebooks, e.g. using matrices antenna weighting
    • 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
    • H04B7/0617—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 for beam forming
    • 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
    • H04B7/0632—Channel quality parameters, e.g. channel quality indicator [CQI]
    • 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
    • H04B7/0639—Using selective indices, e.g. of a codebook, e.g. pre-distortion matrix index [PMI] or for beam 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
    • H04B7/0686—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
    • H04B7/10—Polarisation diversity; Directional 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
    • H04L1/0001—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
    • H04L1/0002—Systems modifying transmission characteristics according to link quality, e.g. power backoff by adapting the transmission rate
    • H04L1/0003—Systems modifying transmission characteristics according to link quality, e.g. power backoff by adapting the transmission rate by switching between different modulation schemes
    • 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
    • H04L1/0009—Systems modifying transmission characteristics according to link quality, e.g. power backoff by adapting the channel coding
    • 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
    • H04L1/0026—Transmission of channel quality indication
    • 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
    • H04L25/024—Channel estimation channel estimation algorithms
    • H04L25/0242—Channel estimation channel estimation algorithms using matrix methods
    • H04L25/0248—Eigen-space methods
    • 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
    • H04L25/03—Shaping networks in transmitter or receiver, e.g. adaptive shaping networks
    • H04L25/0398—Restoration of channel reciprocity
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L27/00—Modulated-carrier systems
    • H04L27/0008—Modulated-carrier systems arrangements for allowing a transmitter or receiver to use more than one type of modulation
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L27/00—Modulated-carrier systems
    • H04L27/0012—Modulated-carrier systems arrangements for identifying the type of modulation
    • 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
    • H04L27/2602—Signal structure
    • H04L27/261—Details of reference signals
    • 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
    • H04L25/03—Shaping networks in transmitter or receiver, e.g. adaptive shaping networks
    • H04L25/03006—Arrangements for removing intersymbol interference
    • H04L2025/0335—Arrangements for removing intersymbol interference characterised by the type of transmission
    • H04L2025/03375—Passband transmission
    • H04L2025/03414—Multicarrier
    • 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
    • H04L25/03—Shaping networks in transmitter or receiver, e.g. adaptive shaping networks
    • H04L25/03006—Arrangements for removing intersymbol interference
    • H04L2025/0335—Arrangements for removing intersymbol interference characterised by the type of transmission
    • H04L2025/03426—Arrangements for removing intersymbol interference characterised by the type of transmission transmission using multiple-input and multiple-output 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
    • H04L25/03—Shaping networks in transmitter or receiver, e.g. adaptive shaping networks
    • H04L25/03006—Arrangements for removing intersymbol interference
    • H04L2025/03777—Arrangements for removing intersymbol interference characterised by the signalling
    • H04L2025/03802—Signalling on the reverse channel
    • 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
    • H04L25/0228—Channel estimation using sounding signals with direct estimation from sounding signals
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L5/00—Arrangements affording multiple use of the transmission path
    • H04L5/0001—Arrangements for dividing the transmission path
    • H04L5/0014—Three-dimensional division
    • H04L5/0023—Time-frequency-space
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L5/00—Arrangements affording multiple use of the transmission path
    • H04L5/003—Arrangements for allocating sub-channels of the transmission path
    • H04L5/0048—Allocation of pilot signals, i.e. of signals known to the receiver
    • H04L5/0051—Allocation of pilot signals, i.e. of signals known to the receiver of dedicated pilots, i.e. pilots destined for a single user or terminal
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L5/00—Arrangements affording multiple use of the transmission path
    • H04L5/003—Arrangements for allocating sub-channels of the transmission path
    • H04L5/0053—Allocation of signalling, i.e. of overhead other than pilot signals

Landscapes

  • Engineering & Computer Science (AREA)
  • Signal Processing (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Quality & Reliability (AREA)
  • Power Engineering (AREA)
  • Physics & Mathematics (AREA)
  • Mathematical Physics (AREA)
  • Radio Transmission System (AREA)
  • Mobile Radio Communication Systems (AREA)
BRPI0814945-3A2A 2007-08-13 2008-08-12 Transmissão mimo com pré-codificação espacial BRPI0814945A2 (pt)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
US95562207P 2007-08-13 2007-08-13
US12/181,732 US8798183B2 (en) 2007-08-13 2008-07-29 Feedback and rate adaptation for MIMO transmission in a time division duplexed (TDD) communication system
PCT/US2008/072932 WO2009023681A2 (en) 2007-08-13 2008-08-12 Mimo transmission with spatial pre-coding

Publications (1)

Publication Number Publication Date
BRPI0814945A2 true BRPI0814945A2 (pt) 2015-01-27

Family

ID=40351445

Family Applications (1)

Application Number Title Priority Date Filing Date
BRPI0814945-3A2A BRPI0814945A2 (pt) 2007-08-13 2008-08-12 Transmissão mimo com pré-codificação espacial

Country Status (12)

Country Link
US (1) US8798183B2 (pt)
EP (1) EP2183892B1 (pt)
JP (2) JP5431325B2 (pt)
KR (1) KR101030670B1 (pt)
CN (1) CN101843062B (pt)
AU (1) AU2008286923A1 (pt)
BR (1) BRPI0814945A2 (pt)
CA (1) CA2694168A1 (pt)
MX (1) MX2010001739A (pt)
RU (1) RU2454831C2 (pt)
TW (1) TW200924451A (pt)
WO (1) WO2009023681A2 (pt)

Families Citing this family (177)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US11309943B2 (en) 2004-04-02 2022-04-19 Rearden, Llc System and methods for planned evolution and obsolescence of multiuser spectrum
US10749582B2 (en) 2004-04-02 2020-08-18 Rearden, Llc Systems and methods to coordinate transmissions in distributed wireless systems via user clustering
US10985811B2 (en) 2004-04-02 2021-04-20 Rearden, Llc System and method for distributed antenna wireless communications
US8542763B2 (en) 2004-04-02 2013-09-24 Rearden, Llc Systems and methods to coordinate transmissions in distributed wireless systems via user clustering
US10886979B2 (en) * 2004-04-02 2021-01-05 Rearden, Llc System and method for link adaptation in DIDO multicarrier systems
US9312929B2 (en) 2004-04-02 2016-04-12 Rearden, Llc System and methods to compensate for Doppler effects in multi-user (MU) multiple antenna systems (MAS)
US10277290B2 (en) 2004-04-02 2019-04-30 Rearden, Llc Systems and methods to exploit areas of coherence in wireless systems
US10425134B2 (en) 2004-04-02 2019-09-24 Rearden, Llc System and methods for planned evolution and obsolescence of multiuser spectrum
US11451275B2 (en) 2004-04-02 2022-09-20 Rearden, Llc System and method for distributed antenna wireless communications
US10200094B2 (en) 2004-04-02 2019-02-05 Rearden, Llc Interference management, handoff, power control and link adaptation in distributed-input distributed-output (DIDO) communication systems
US9826537B2 (en) 2004-04-02 2017-11-21 Rearden, Llc System and method for managing inter-cluster handoff of clients which traverse multiple DIDO clusters
US11394436B2 (en) 2004-04-02 2022-07-19 Rearden, Llc System and method for distributed antenna wireless communications
US9819403B2 (en) 2004-04-02 2017-11-14 Rearden, Llc System and method for managing handoff of a client between different distributed-input-distributed-output (DIDO) networks based on detected velocity of the client
US10187133B2 (en) 2004-04-02 2019-01-22 Rearden, Llc System and method for power control and antenna grouping in a distributed-input-distributed-output (DIDO) network
US8654815B1 (en) 2004-04-02 2014-02-18 Rearden, Llc System and method for distributed antenna wireless communications
US9685997B2 (en) 2007-08-20 2017-06-20 Rearden, Llc Systems and methods to enhance spatial diversity in distributed-input distributed-output wireless systems
US7917176B2 (en) * 2006-02-14 2011-03-29 Nec Laboratories America, Inc. Structured codebook and successive beamforming for multiple-antenna systems
US8824420B2 (en) * 2007-03-22 2014-09-02 Mitsubishi Electric Research Laboratories, Inc. Method and system for generating antenna selection signals in OFDM tranceivers with fewer RF chains than antennas in MIMO wireless networks
US8190092B1 (en) 2007-08-29 2012-05-29 Marvell International Ltd. Selecting modulation and coding scheme in the presence of interference
US8111771B2 (en) * 2007-06-19 2012-02-07 Samsung Electronics Co., Ltd. Wireless communication apparatus and method using beamforming
ES2741177T3 (es) 2007-09-14 2020-02-10 Ericsson Telefon Ab L M Uso mejorado de subtramas en un sistema celular de comunicaciones
WO2009041881A2 (en) * 2007-09-28 2009-04-02 Telefonaktiebolaget L M Ericsson (Publ) Transmission of reference signal between uplink and downlink timeslots
US8948799B1 (en) 2007-11-30 2015-02-03 Microsoft Corporation Channel quality indicator apparatus and method
KR100991792B1 (ko) 2007-12-31 2010-11-04 엘지전자 주식회사 협력적 다중 입출력 방식 신호 송수신 방법
CN101505485B (zh) * 2008-02-05 2014-11-05 三星电子株式会社 Lte tdd系统中发送srs的方法和装置
US8358979B2 (en) 2009-02-04 2013-01-22 Telefonaktiebolaget Lm Ericsson (Publ) Method and apparatus for measuring interference in a telecommunications system
TWI357733B (en) * 2008-03-25 2012-02-01 Ralink Technology Corp Method for error-correcting code selection for mim
US20090312044A1 (en) * 2008-06-13 2009-12-17 Ari Hottinen Channel Estimation, Scheduling, and Resource Allocation using Pilot Channel Measurements
DK3073665T3 (en) * 2008-06-23 2018-08-13 Sun Patent Trust PROCEDURE FOR ARRANGING REFERENCE SIGNALS AND WIRELESS COMMUNICATION BASES
CN101640921B (zh) * 2008-07-31 2013-10-23 电信科学技术研究院 上行探测参考信号的带宽确定方法、系统和装置
US8194762B2 (en) * 2008-08-19 2012-06-05 Motorola Mobility, Inc. Feedforward of non-quantized precoding weights in a wireless communications system
CN101378595B (zh) * 2008-09-28 2012-05-23 中兴通讯股份有限公司 确定随机接入信道数量的方法及测量参考信号的发送方法
WO2010036084A2 (en) * 2008-09-29 2010-04-01 Electronics And Telecommunications Research Institute Apparatus and method for transmitting and receiving data in wireless communication system using relay
US20100103810A1 (en) * 2008-10-23 2010-04-29 Motorola, Inc. Modulation coding scheme selection in a wireless communication system
RU2398356C2 (ru) * 2008-10-31 2010-08-27 Cамсунг Электроникс Ко., Лтд Способ установления беспроводной линии связи и система для установления беспроводной связи
JP5196487B2 (ja) * 2008-12-25 2013-05-15 京セラ株式会社 無線基地局および無線通信方法
US8391392B2 (en) * 2009-01-05 2013-03-05 Marvell World Trade Ltd. Precoding codebooks for MIMO communication systems
US8385441B2 (en) 2009-01-06 2013-02-26 Marvell World Trade Ltd. Efficient MIMO transmission schemes
KR101540482B1 (ko) * 2009-01-08 2015-08-03 엘지전자 주식회사 협력 전송 방법
US8867493B2 (en) 2009-02-02 2014-10-21 Qualcomm Incorporated Scheduling algorithms for cooperative beamforming based on resource quality indication
US8867380B2 (en) * 2009-02-02 2014-10-21 Qualcomm Incorporated Scheduling algorithms for cooperative beamforming
US8644409B2 (en) * 2009-02-11 2014-02-04 Qualcomm Incorporated Method and apparatus for modulation and layer mapping in a wireless communication system
WO2010095874A2 (ko) * 2009-02-19 2010-08-26 (주)엘지전자 릴레이 통신 시스템에서 데이터 송수신 방법 및 장치
US8238483B2 (en) * 2009-02-27 2012-08-07 Marvell World Trade Ltd. Signaling of dedicated reference signal (DRS) precoding granularity
US8649456B2 (en) 2009-03-12 2014-02-11 Futurewei Technologies, Inc. System and method for channel information feedback in a wireless communications system
KR20110138388A (ko) * 2009-03-17 2011-12-27 인터디지탈 패튼 홀딩스, 인크 사운딩 레퍼런스 신호(ｓｒｓ) 전송의 전력 제어를 위한 방법 및 장치
JP5541290B2 (ja) * 2009-03-19 2014-07-09 日本電気株式会社 Ｏｆｄｍフレーム内へのダウンリンク復調基準信号の挿入
US8867495B2 (en) 2009-03-20 2014-10-21 Qualcomm Incorporated Feedback mechanisms for beamforming operation
CN102362441B (zh) 2009-03-22 2016-12-21 Lg电子株式会社 使用多个天线的信道探测方法以及用于其的装置
US8675627B2 (en) 2009-03-23 2014-03-18 Futurewei Technologies, Inc. Adaptive precoding codebooks for wireless communications
CN102349313B (zh) * 2009-04-06 2014-05-28 马维尔国际贸易有限公司 用于多用户mimo通信系统的改进型反馈策略
JP5607143B2 (ja) * 2009-04-21 2014-10-15 マーベル ワールド トレード リミテッド 通信方法、通信装置、携帯通信端末、チップセット、および、通信システム
US20110110455A1 (en) * 2009-04-23 2011-05-12 Qualcomm Incorporated Rank and precoding indication for mimo operation
US20110103510A1 (en) * 2009-04-23 2011-05-05 Qualcomm Incorporated Rank and precoding indication for mimo operation
US8938247B2 (en) * 2009-04-23 2015-01-20 Qualcomm Incorporated Sounding reference signal for coordinated multi-point operation
US20110105137A1 (en) * 2009-04-23 2011-05-05 Qualcomm Incorporated Rank and precoding indication for mimo operation
KR101752327B1 (ko) 2009-04-30 2017-07-11 코닌클리케 필립스 엔.브이. 네트워크에서 통신하기 위한 방법
DE102009019894A1 (de) * 2009-05-04 2010-11-11 Rohde & Schwarz Gmbh & Co. Kg Verfahren und Vorrichtung zur Ermittlung von Schätzwerten für Sendesymbole in einem MIMO-OFDM-System
KR101128817B1 (ko) * 2009-05-15 2012-03-23 엘지전자 주식회사 무선 통신 시스템에서 사운딩 참조 신호 송신 방법 및 이를 위한 장치
KR101294815B1 (ko) 2009-05-15 2013-08-08 엘지전자 주식회사 무선 통신 시스템에서 사운딩 참조 신호 송신 방법 및 이를 위한 장치
KR101678435B1 (ko) * 2009-07-17 2016-12-06 엘지전자 주식회사 다중 안테나 무선 통신 시스템에서 하향링크 신호를 수신하는 방법 및 이를 위한 장치
KR20110009025A (ko) 2009-07-20 2011-01-27 엘지전자 주식회사 상향링크 제어정보 전송 방법 및 장치
CN101997654B (zh) 2009-08-17 2013-08-28 富士通株式会社 生成预编码矩阵码书组的方法和装置
US9137802B2 (en) * 2009-08-18 2015-09-15 Qualcomm Incorporated DL MU-MIMO operation in LTE-A
CN102025456A (zh) * 2009-09-18 2011-04-20 富士通株式会社 反馈参数选择装置和反馈参数选择方法
KR101306745B1 (ko) 2009-09-21 2013-09-11 엘지전자 주식회사 무선 통신 시스템에서 사운딩 참조 신호 송신 방법 및 이를 위한 장치
US8948088B2 (en) 2009-09-21 2015-02-03 Lg Electronics Inc. Method for transmitting a sounding reference signal in a wireless communication system, and apparatus for same
US8675794B1 (en) 2009-10-13 2014-03-18 Marvell International Ltd. Efficient estimation of feedback for modulation and coding scheme (MCS) selection
US8917796B1 (en) 2009-10-19 2014-12-23 Marvell International Ltd. Transmission-mode-aware rate matching in MIMO signal generation
KR20110044155A (ko) * 2009-10-22 2011-04-28 삼성전자주식회사 무선통신시스템에서 임의 접근 채널 전송 장치 및 방법
JP5669854B2 (ja) 2009-11-09 2015-02-18 マーベル ワールド トレード リミテッド 調整送信を利用する基地局にフィードバックデータを送信するための方法及び装置、並びに調整送信スキームを利用する基地局及びフィードバックデータを送信する移動通信端末を備えたシステム
EP2334122B1 (en) * 2009-12-14 2014-03-26 Intel Mobile Communications GmbH Method and apparatus for data communication in LTE cellular networks
WO2011074761A1 (ko) 2009-12-17 2011-06-23 엘지전자 주식회사 무선랜 시스템의 스테이션간 간섭 절감 방법 및 이를 지원하는 장치
CN102783120B (zh) * 2009-12-17 2015-07-01 马维尔国际贸易有限公司 用于交叉极化天线的mimo反馈方案
EP2337235B1 (en) * 2009-12-21 2013-04-17 Fujitsu Limited Feedback interval control in MIMO-systems
KR101757301B1 (ko) 2009-12-22 2017-07-12 엘지전자 주식회사 프리코딩된 사운딩 참조신호를 이용하여 ｃｏｍｐ 통신을 수행하는 장치 및 그 방법
CN102668674A (zh) * 2009-12-28 2012-09-12 京瓷株式会社 自适应阵列基站和用于自适应阵列基站的通信方法
EP2520033B1 (en) * 2009-12-30 2018-03-07 Telecom Italia S.p.A. Method for selecting a precodlng matrix in a "multiple input multiple output" ("mimo") system
CN102687456B (zh) * 2010-01-07 2015-04-15 马维尔国际贸易有限公司 专用参考信号(drs)预编码粒度信令的方法和装置
US20110171964A1 (en) * 2010-01-08 2011-07-14 Mediatek Inc. Resource allocation and signaling method for LTE sounding
WO2011090259A2 (ko) 2010-01-19 2011-07-28 엘지전자 주식회사 무선 통신 시스템에서 사운딩 참조 신호 송신 방법 및 이를 위한 장치
JP5258002B2 (ja) 2010-02-10 2013-08-07 マーベル ワールド トレード リミテッド Ｍｉｍｏ通信システムにおける装置、移動通信端末、チップセット、およびその方法
US8520542B2 (en) * 2010-02-12 2013-08-27 Mediatek Inc. Uplink power control message design in wireless OFDMA systems
US20110305209A1 (en) * 2010-03-09 2011-12-15 Qualcomm Incorporated Rate adaptation for sdma
CN102201886B (zh) 2010-03-22 2014-03-12 中兴通讯股份有限公司 闭环多输入多输出系统中预编码矩阵的选取方法和系统
US8687741B1 (en) 2010-03-29 2014-04-01 Marvell International Ltd. Scoring hypotheses in LTE cell search
BR112012027810B1 (pt) 2010-04-30 2021-08-17 Sun Patent Trust Dispositivo de comunicação sem fio e método para controlar a potência de transmissão
CN102255642B (zh) * 2010-05-19 2014-01-01 华为技术有限公司 一种干扰消除方法及设备、系统
CN105721032B (zh) 2010-06-22 2019-02-05 Lg电子株式会社 报告信道状态信息的方法和装置
JP5947793B2 (ja) 2010-06-23 2016-07-06 コーニンクレッカ フィリップス エヌ ヴェＫｏｎｉｎｋｌｉｊｋｅ Ｐｈｉｌｉｐｓ Ｎ．Ｖ． セカンダリ局を動作させるための方法
US8547955B2 (en) * 2010-07-28 2013-10-01 Intel Corporation Feedback scheme for MU-MIMO
CN102386955B (zh) 2010-09-03 2014-03-12 华为技术有限公司 干扰对齐方法和设备及多信道通信系统
JP2012100254A (ja) 2010-10-06 2012-05-24 Marvell World Trade Ltd Ｐｕｃｃｈフィードバックのためのコードブックサブサンプリング
US8615052B2 (en) 2010-10-06 2013-12-24 Marvell World Trade Ltd. Enhanced channel feedback for multi-user MIMO
JP5798317B2 (ja) * 2010-11-26 2015-10-21 京セラ株式会社 無線基地局及び通信制御方法
WO2012070660A1 (ja) * 2010-11-26 2012-05-31 京セラ株式会社 無線基地局及び通信制御方法
JP5735783B2 (ja) * 2010-11-26 2015-06-17 京セラ株式会社 無線基地局及び通信制御方法
US9048970B1 (en) 2011-01-14 2015-06-02 Marvell International Ltd. Feedback for cooperative multipoint transmission systems
CN102624432B (zh) * 2011-01-26 2017-04-05 中兴通讯股份有限公司 多层波束成形方法及实现多层波束成形的终端
US9282556B2 (en) 2011-02-15 2016-03-08 Kyocera Corporation Base station and communication method thereof
KR101373769B1 (ko) 2011-02-15 2014-03-14 성균관대학교산학협력단 고효율 가변전력 전송 장치 및 방법
US8861391B1 (en) 2011-03-02 2014-10-14 Marvell International Ltd. Channel feedback for TDM scheduling in heterogeneous networks having multiple cell classes
WO2012131612A1 (en) 2011-03-31 2012-10-04 Marvell World Trade Ltd. Channel feedback for cooperative multipoint transmission
US8792372B2 (en) * 2011-06-20 2014-07-29 Xiao-an Wang Carrier-phase difference detection with mismatched transmitter and receiver delays
JP5958944B2 (ja) * 2011-06-21 2016-08-02 マーベル ワールド トレード リミテッド Ｍｉｍｏでの黙示的ビームフォーミングのためのアップリンクトレーニング
EP2547022A1 (en) 2011-07-13 2013-01-16 Intel Mobile Communications Technology Dresden GmbH Method and apparatus for determining channel state information
CN102291210B (zh) * 2011-08-08 2017-12-01 中兴通讯股份有限公司 一种生成预编码矩阵的方法及装置
KR101839812B1 (ko) * 2011-08-11 2018-03-19 삼성전자주식회사 혼합 아날로그/디지털 빔포밍을 위한 방법 및 장치
US20130059618A1 (en) * 2011-09-06 2013-03-07 Carl Cao Method and architecture for very high capacity wireless access using active electronic scanned array (aesa)
US9241287B2 (en) * 2011-09-13 2016-01-19 Qualcomm Incorporated Narrow bandwidth operation in LTE
WO2013048143A2 (en) 2011-09-27 2013-04-04 Samsung Electronics Co., Ltd. A method and appratus for transmission power control for a sounding reference signal
US9154969B1 (en) 2011-09-29 2015-10-06 Marvell International Ltd. Wireless device calibration for implicit transmit
WO2013068916A1 (en) 2011-11-07 2013-05-16 Marvell World Trade Ltd. Codebook sub-sampling for frequency-selective precoding feedback
WO2013068915A2 (en) 2011-11-07 2013-05-16 Marvell World Trade Ltd. Precoding feedback for cross-polarized antennas with magnitude information
WO2013068974A1 (en) 2011-11-10 2013-05-16 Marvell World Trade Ltd. Differential cqi encoding for cooperative multipoint feedback
US9031018B2 (en) * 2011-11-15 2015-05-12 Telefonaktiebolaget L M Ericsson (Publ.) Methods selecting modulation/coding schemes mapped to multiple MIMO layers and related user equipment
CN103138822B (zh) * 2011-12-05 2017-04-12 华为技术有限公司 传输信号的方法和设备
US9220087B1 (en) 2011-12-08 2015-12-22 Marvell International Ltd. Dynamic point selection with combined PUCCH/PUSCH feedback
US8902842B1 (en) 2012-01-11 2014-12-02 Marvell International Ltd Control signaling and resource mapping for coordinated transmission
US9294179B2 (en) 2012-02-07 2016-03-22 Google Technology Holdings LLC Gain normalization correction of PMI and COI feedback for base station with antenna array
JP2013176008A (ja) * 2012-02-27 2013-09-05 Kyocera Corp 通信システム、基地局、移動局及び通信制御方法
JP5923786B2 (ja) * 2012-03-16 2016-05-25 シャープ株式会社 基地局装置及び通信方法
EP2842361B1 (en) 2012-04-27 2019-03-27 Marvell World Trade Ltd. Coordinated multipoint (comp) communication between base-stations and mobile communication terminals
US20130301563A1 (en) * 2012-05-11 2013-11-14 Samsung Electronics Co., Ltd Pilot design for millimeter wave broadband
FR2990816A1 (fr) * 2012-05-16 2013-11-22 France Telecom Procede de communication sans-fil a haut debit avec un recepteur a antennes multiples
US10098095B2 (en) * 2012-05-25 2018-10-09 Qualcomm Incorporated Feedback to enhance rate prediction with bursty interference
US9288009B2 (en) * 2012-07-09 2016-03-15 Qualcomm Incorporated Modulation coding scheme selection for response frames in case of transmit power imbalance
US11190947B2 (en) 2014-04-16 2021-11-30 Rearden, Llc Systems and methods for concurrent spectrum usage within actively used spectrum
US11050468B2 (en) 2014-04-16 2021-06-29 Rearden, Llc Systems and methods for mitigating interference within actively used spectrum
US10194346B2 (en) 2012-11-26 2019-01-29 Rearden, Llc Systems and methods for exploiting inter-cell multiplexing gain in wireless cellular systems via distributed input distributed output technology
US11189917B2 (en) 2014-04-16 2021-11-30 Rearden, Llc Systems and methods for distributing radioheads
EP2947787B1 (en) 2012-12-27 2017-02-15 Huawei Technologies Co., Ltd. Method for feeding back channel state information, user equipment, and base station
JP5436703B2 (ja) * 2013-01-29 2014-03-05 京セラ株式会社 無線基地局および無線通信方法
KR20140107967A (ko) 2013-02-28 2014-09-05 한국전자통신연구원 프리코딩 방법 및 장치
US10164698B2 (en) 2013-03-12 2018-12-25 Rearden, Llc Systems and methods for exploiting inter-cell multiplexing gain in wireless cellular systems via distributed input distributed output technology
US9973246B2 (en) 2013-03-12 2018-05-15 Rearden, Llc Systems and methods for exploiting inter-cell multiplexing gain in wireless cellular systems via distributed input distributed output technology
US9923657B2 (en) 2013-03-12 2018-03-20 Rearden, Llc Systems and methods for exploiting inter-cell multiplexing gain in wireless cellular systems via distributed input distributed output technology
US10488535B2 (en) 2013-03-12 2019-11-26 Rearden, Llc Apparatus and method for capturing still images and video using diffraction coded imaging techniques
RU2767777C2 (ru) 2013-03-15 2022-03-21 Риарден, Ллк Системы и способы радиочастотной калибровки с использованием принципа взаимности каналов в беспроводной связи с распределенным входом - распределенным выходом
JP6151074B2 (ja) * 2013-04-15 2017-06-21 京セラ株式会社 通信システムおよび通信制御方法
EP2996258B1 (en) 2013-05-07 2019-07-31 LG Electronics Inc. Method for reporting channel state information for three dimensional beamforming in wireless communication system and apparatus for same
US9148325B2 (en) * 2013-05-23 2015-09-29 Ridha HAMILA System and methods for compensation of I/Q imbalance in beamforming OFDM systems
KR101481064B1 (ko) * 2013-06-28 2015-01-12 전북대학교산학협력단 다수의 안테나 어레이들을 이용한 샘플 고유치 기반의 신호 검출 방법 및 이를 적용한 통신 시스템
CN105453629B (zh) 2013-08-05 2019-03-15 三星电子株式会社 在无线通信系统中用于通过波束分组发送和接收参考信号的方法和装置
JP6135771B2 (ja) * 2013-10-25 2017-05-31 富士通株式会社 通信システム、通信端末及び参照信号送信方法
CN104639486B (zh) * 2013-11-12 2018-04-10 华为技术有限公司 传输方法及装置
KR101447027B1 (ko) * 2013-11-19 2014-10-07 국방과학연구소 다중 안테나 시스템의 빔포밍 장치 및 방법
US20150163036A1 (en) * 2013-12-11 2015-06-11 Nokia Solutions And Networks Oy High Resolution Channel Sounding for FDD Communications
US9680753B2 (en) * 2014-01-07 2017-06-13 Qualcomm Incorporated Systems and methods for wireless communication with asymmetric numbers of transmit and receive chains
EP2897409B1 (en) * 2014-01-17 2020-05-27 Sony Corporation Method for operating a base station comprising a plurality of antennas in a wireless radio network
US9699048B2 (en) * 2014-02-13 2017-07-04 Samsung Electronics Co., Ltd. Computing system with channel quality mechanism and method of operation thereof
US11290162B2 (en) 2014-04-16 2022-03-29 Rearden, Llc Systems and methods for mitigating interference within actively used spectrum
CN105245310B (zh) * 2014-07-09 2020-01-14 中兴通讯股份有限公司 一种下行导频信号的处理方法及系统
KR102124610B1 (ko) * 2014-08-20 2020-06-19 삼성전자주식회사 무선 통신 시스템에서 낮은 복잡도로 복호를 수행하기 위한 방법 및 장치
US9768839B2 (en) * 2014-09-19 2017-09-19 Huawei Technologies Co., Ltd. System and method for downlink open-loop multi-user coordinated multipoint transmission using sparse code multiple access
KR102398646B1 (ko) * 2014-12-02 2022-05-17 삼성전자주식회사 하이브리드 다중-입력 다중-출력 방식을 지원하는 통신 시스템에서 빔 운용 장치 및 방법
WO2016131487A1 (en) * 2015-02-19 2016-08-25 Nokia Solutions And Networks Oy Pre-coding
CN106160802B (zh) * 2015-03-25 2021-09-07 索尼公司 无线通信设备、无线通信方法、计算机可读存储介质
US9860084B2 (en) * 2015-07-29 2018-01-02 Qualcomm Incorporated Techniques for managing sounding intervals of a wireless communications device
CN107925942B (zh) * 2015-08-14 2021-03-12 瑞典爱立信有限公司 无线通信系统中的系统接入信息的分发
CN107404345B (zh) * 2016-05-21 2020-10-02 上海朗帛通信技术有限公司 一种无线通信中的方法和装置
CN109792285B (zh) 2016-08-10 2022-11-18 Idac控股公司 用于上行链路(ul)信道相互性的方法、装置、系统和过程
EP3501115B1 (en) * 2016-08-22 2020-03-04 Telefonaktiebolaget LM Ericsson (publ) Radio node and method therein for determining precoders
WO2018035866A1 (zh) * 2016-08-26 2018-03-01 华为技术有限公司 一种数据发送方法及装置
US10419245B2 (en) * 2016-11-29 2019-09-17 Motorola Mobility Llc Method and apparatus for determining parameters and conditions for line of sight MIMO communication
US10250306B2 (en) 2016-11-29 2019-04-02 Motorola Mobility Llc Method and apparatus for determining parameters and conditions for line of sight MIMO communication
ES2863299T3 (es) * 2016-12-30 2021-10-11 Guangdong Oppo Mobile Telecommunications Corp Ltd Método de transmisión de información, dispositivo de red y dispositivo terminal
CN110278016B (zh) 2017-01-06 2020-07-24 华为技术有限公司 一种信号传输方法和网络设备以及终端设备
CA3062408C (en) 2017-05-03 2022-07-12 Lg Electronics Inc. Method for transmitting random access channel signal, user equipment, method for receiving random access channel signal, and base station
US10594371B2 (en) * 2017-08-11 2020-03-17 Qualcomm Incorporated Precoding reference signals for uplink transmission with downlink interference information
WO2019066714A1 (en) * 2017-09-29 2019-04-04 Telefonaktiebolaget Lm Ericsson (Publ) MULTI-ANTENNA PROCESSING FOR REFERENCE SIGNAL
RU2748317C1 (ru) 2017-10-30 2021-05-24 Гуандун Оппо Мобайл Телекоммьюникейшнс Корп., Лтд. Способ передачи сигнала, сетевое устройство и оконечное устройство
US10404339B1 (en) 2018-08-09 2019-09-03 At&T Intellectual Property I, L.P. Precoding matrix indicator determination in wireless communication systems
KR20210037240A (ko) 2019-09-27 2021-04-06 삼성전자주식회사 무선 통신 시스템에서 하향링크 채널을 복원하기 위한 장치 및 방법
CN111988248B (zh) * 2019-11-15 2022-12-06 郑州轻工业大学 一种基于干扰通信对信息交互机制的接收方法及其装置
US11832226B2 (en) * 2020-03-26 2023-11-28 Qualcomm Incorporated Indicating slot format indices used across multiple user equipments
US11159208B1 (en) * 2020-07-15 2021-10-26 Samsung Electronics Co., Ltd Optimal precoder method and apparatus with equal power allocation

Family Cites Families (47)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
AUPM780994A0 (en) 1994-08-31 1994-09-22 Telstra Corporation Limited A method and apparatus for channel allocation in a cellular telecommunications network
US6041046A (en) 1995-07-14 2000-03-21 Omnipoint Corporation Cyclic time hopping in time division multiple access communication system
GB9614927D0 (en) 1996-07-16 1996-09-04 British Telecomm Arranging data signals defining a network
CA2194023C (en) 1996-12-24 2002-04-02 Murray C. Baker Channel hopping protocol
JPH10240500A (ja) 1997-02-28 1998-09-11 Toshiba Corp 乱数生成装置及び方法、暗号化装置及び方法、復号装置及び方法、並びにストリーム暗号システム
US5852630A (en) * 1997-07-17 1998-12-22 Globespan Semiconductor, Inc. Method and apparatus for a RADSL transceiver warm start activation procedure with precoding
CN100391131C (zh) 1998-08-21 2008-05-28 埃沃罗杰克斯有限公司 信息传输方法和适用该方法的系统
WO2000051304A1 (en) 1999-02-24 2000-08-31 The Board Of Trustees, Leland Stanford Junior University Express bit swapping in a multicarrier transmission system
US6529487B1 (en) 1999-07-09 2003-03-04 Qualcomm Incorporated Method and apparatus for securely transmitting distributed RAND for use in mobile station authentication
US6934388B1 (en) 1999-11-12 2005-08-23 Itt Manufacturing Enterprises, Inc. Method and apparatus for generating random permutations
KR100370746B1 (ko) 2000-05-30 2003-02-05 한국전자통신연구원 다차원 직교 자원 도약 다중화 통신 방식 및 장치
US6981157B2 (en) 2000-08-30 2005-12-27 Lucent Technologies Inc. Method and apparatus for ensuring security of users of short range wireless enable devices
US6920171B2 (en) 2000-12-14 2005-07-19 Motorola, Inc. Multiple access frequency hopping network with interference anticipation
US6859503B2 (en) 2001-04-07 2005-02-22 Motorola, Inc. Method and system in a transceiver for controlling a multiple-input, multiple-output communications channel
US6662024B2 (en) 2001-05-16 2003-12-09 Qualcomm Incorporated Method and apparatus for allocating downlink resources in a multiple-input multiple-output (MIMO) communication system
US7027523B2 (en) 2001-06-22 2006-04-11 Qualcomm Incorporated Method and apparatus for transmitting data in a time division duplexed (TDD) communication system
US7317680B2 (en) 2002-10-01 2008-01-08 Nortel Networks Limited Channel mapping for OFDM
US8570988B2 (en) 2002-10-25 2013-10-29 Qualcomm Incorporated Channel calibration for a time division duplexed communication system
US8320301B2 (en) * 2002-10-25 2012-11-27 Qualcomm Incorporated MIMO WLAN system
CN1723647B (zh) 2002-10-26 2010-08-25 韩国电子通信研究院 利用comb模式码元的跳频正交频分多址方法
US7068703B2 (en) 2003-02-18 2006-06-27 Qualcomm, Incorporated Frequency hop sequences for multi-band communication systems
US7486735B2 (en) 2003-02-28 2009-02-03 Nortel Networks Limited Sub-carrier allocation for OFDM
DE10309012B3 (de) * 2003-03-01 2004-08-12 Hilti Ag Steuerverfahren einer axial schlagenden und drehenden Elektrohandwerkzeugmaschine
JP3898138B2 (ja) 2003-03-20 2007-03-28 三菱電機株式会社 送信機及び受信機
US7254158B2 (en) 2003-05-12 2007-08-07 Qualcomm Incorporated Soft handoff with interference cancellation in a wireless frequency hopping communication system
US7039370B2 (en) 2003-10-16 2006-05-02 Flarion Technologies, Inc. Methods and apparatus of providing transmit and/or receive diversity with multiple antennas in wireless communication systems
US8611283B2 (en) 2004-01-28 2013-12-17 Qualcomm Incorporated Method and apparatus of using a single channel to provide acknowledgement and assignment messages
JP2005242739A (ja) 2004-02-27 2005-09-08 Hiroshima Industrial Promotion Organization 遺伝的プログラミングによるデータベース解析の方法およびその装置
US20050286663A1 (en) 2004-06-23 2005-12-29 Intel Corporation Compact feedback for closed loop MIMO systems
US8130855B2 (en) * 2004-11-12 2012-03-06 Interdigital Technology Corporation Method and apparatus for combining space-frequency block coding, spatial multiplexing and beamforming in a MIMO-OFDM system
BRPI0519548A2 (pt) 2004-12-22 2009-01-27 Qualcomm Inc mÉtodos e equipamento para salto flexÍvel em uma rede de comunicaÇço de méltiplos acessos
US20070071147A1 (en) 2005-06-16 2007-03-29 Hemanth Sampath Pseudo eigen-beamforming with dynamic beam selection
DE602006021682D1 (de) * 2005-10-17 2011-06-16 Samsung Electronics Co Ltd Verfahren und Vorrichtung zum Senden/Empfangen von Daten in einem Mehrbenutzer, Mehrantennen Kommunikationssystem
PT1941647E (pt) * 2005-10-27 2013-08-22 Qualcomm Inc Pré-codificação para planificação sensível ao segmento em sistemas de comunicação sem fios
US8385433B2 (en) 2005-10-27 2013-02-26 Qualcomm Incorporated Linear precoding for spatially correlated channels
KR100996023B1 (ko) * 2005-10-31 2010-11-22 삼성전자주식회사 다중 안테나 통신 시스템에서 데이터 송수신 장치 및 방법
US7917176B2 (en) * 2006-02-14 2011-03-29 Nec Laboratories America, Inc. Structured codebook and successive beamforming for multiple-antenna systems
US7949318B2 (en) * 2007-02-05 2011-05-24 Nec Laboratories America, Inc. Multi-rank beamforming precoding apparatus and method
JP4642679B2 (ja) * 2006-03-14 2011-03-02 富士通株式会社 無線通信装置及び無線通信方法
KR100819285B1 (ko) * 2006-03-16 2008-04-02 삼성전자주식회사 다중 사용자를 지원하는 다중 안테나 시스템에서의 피드 백 정보 송/수신방법 및 그 시스템
US7995670B2 (en) * 2006-05-24 2011-08-09 Samsung Electronics Co., Ltd. Method of transmitting and receiving data using precoding codebook in multi-user MIMO communication system and transmitter and receiver using the method
US7949064B2 (en) * 2006-08-14 2011-05-24 Texas Instruments Incorporated Codebook and pre-coder selection for closed-loop mimo
US8630256B2 (en) * 2006-12-05 2014-01-14 Qualcomm Incorporated Method and system for reducing backhaul utilization during base station handoff in wireless networks
US20080187062A1 (en) 2007-02-06 2008-08-07 Interdigital Technology Corporation Method and apparatus for multiple-input multiple- output feedback generation
US8451915B2 (en) 2007-03-21 2013-05-28 Samsung Electronics Co., Ltd. Efficient uplink feedback in a wireless communication system
US8824420B2 (en) * 2007-03-22 2014-09-02 Mitsubishi Electric Research Laboratories, Inc. Method and system for generating antenna selection signals in OFDM tranceivers with fewer RF chains than antennas in MIMO wireless networks
US8098755B2 (en) 2007-09-07 2012-01-17 Broadcom Corporation Method and system for beamforming in a multiple user multiple input multiple output (MIMO) communication system using a codebook

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RU2454831C2 (ru) 2012-06-27
CA2694168A1 (en) 2009-02-19
TW200924451A (en) 2009-06-01
WO2009023681A2 (en) 2009-02-19
US8798183B2 (en) 2014-08-05
EP2183892A2 (en) 2010-05-12
KR101030670B1 (ko) 2011-04-20
MX2010001739A (es) 2010-03-15
JP2011517373A (ja) 2011-06-02
AU2008286923A1 (en) 2009-02-19
KR20100044258A (ko) 2010-04-29
JP2014014101A (ja) 2014-01-23
EP2183892B1 (en) 2013-09-25
CN101843062A (zh) 2010-09-22
US20090046800A1 (en) 2009-02-19
JP5431325B2 (ja) 2014-03-05
RU2010109400A (ru) 2011-09-20
WO2009023681A3 (en) 2009-05-22
CN101843062B (zh) 2014-03-05

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