IN2013CN00812A - - Google Patents

Info

Publication number
IN2013CN00812A
IN2013CN00812A IN812CHN2013A IN2013CN00812A IN 2013CN00812 A IN2013CN00812 A IN 2013CN00812A IN 812CHN2013 A IN812CHN2013 A IN 812CHN2013A IN 2013CN00812 A IN2013CN00812 A IN 2013CN00812A
Authority
IN
India
Prior art keywords
precoding matrix
enforcing
final precoding
spatial streams
multiple codewords
Prior art date
Application number
Inventor
Stefan Geirhofer
Peter Gaal
Juan Montojo
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 IN2013CN00812A publication Critical patent/IN2013CN00812A/en

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
    • H04B7/0456—Selection of precoding matrices or codebooks, e.g. using matrices antenna weighting
    • H04B7/046—Selection of precoding matrices or codebooks, e.g. using matrices antenna weighting taking physical layer constraints into account
    • H04B7/0465—Selection of precoding matrices or codebooks, e.g. using matrices antenna weighting taking physical layer constraints into account taking power constraints at power amplifier or emission constraints, e.g. constant modulus, into account
    • 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
    • H04B7/0478—Special codebook structures directed to feedback optimisation
    • 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
    • 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
    • H04L25/03891—Spatial equalizers
    • H04L25/03949—Spatial equalizers equalizer selection or adaptation based on feedback
    • 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
    • H04B7/0636—Feedback format
    • H04B7/0645—Variable feedback
    • H04B7/065—Variable contents, e.g. long-term or short-short

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Physics & Mathematics (AREA)
  • Mathematical Physics (AREA)
  • Mobile Radio Communication Systems (AREA)
  • Power Engineering (AREA)
  • Radio Transmission System (AREA)

Abstract

Methods and apparatus for enforcing codebook properties (e.g. constant modulus and/or finite alphabet) in adaptive and dual stage codebooks are described. One example method generally includes receiving multiple feedback aspects of a channel for wireless communications determining multiple codewords based on the multiple feedback aspects determining a final precoding matrix based on the multiple codewords enforcing at least one codebook property in at least one of the multiple codewords or the final precoding matrix applying the final precoding matrix to a plurality of spatial streams to form precoded spatial streams and transmitting the precoded spatial streams. For certain aspects enforcing the at least one codebook property includes quantizing elements in each of the multiple codewords and/or the final precoding matrix to the nearest value in a finite alphabet or to increase a performance metric.
IN812CHN2013 2010-08-16 2011-08-16 IN2013CN00812A (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
US37410010P 2010-08-16 2010-08-16
US13/210,052 US9571173B2 (en) 2010-08-16 2011-08-15 Enforcing constant modulus and finite alphabet properties in adaptive and dual-stage codebooks
PCT/US2011/047972 WO2012024326A1 (en) 2010-08-16 2011-08-16 Enforcing constant modulus and finite alphabet properties in adaptive and dual-stage codebooks

Publications (1)

Publication Number Publication Date
IN2013CN00812A true IN2013CN00812A (en) 2015-07-03

Family

ID=44584651

Family Applications (1)

Application Number Title Priority Date Filing Date
IN812CHN2013 IN2013CN00812A (en) 2010-08-16 2011-08-16

Country Status (7)

Country Link
US (1) US9571173B2 (en)
EP (2) EP2606579B1 (en)
JP (2) JP5784728B2 (en)
KR (1) KR101477122B1 (en)
CN (1) CN103119857B (en)
IN (1) IN2013CN00812A (en)
WO (1) WO2012024326A1 (en)

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US8989240B2 (en) * 2010-06-23 2015-03-24 Koninklijke Philips N.V. Method for operating a secondary station
US9571173B2 (en) 2010-08-16 2017-02-14 Qualcomm Incorporated Enforcing constant modulus and finite alphabet properties in adaptive and dual-stage codebooks
JP6463739B2 (en) 2013-06-05 2019-02-06 エルジー エレクトロニクス インコーポレイティド Method and apparatus for transmitting channel state information in a wireless communication system
BR112016025316A2 (en) 2014-04-28 2017-08-15 Huawei Tech Co Ltd Multiple antenna data transmission method, base station, user equipment and system
CN105763233B (en) * 2016-02-24 2018-10-30 华中科技大学 User's group selection method based on angle information under a kind of Massive-MIMO
CN108322283B (en) * 2017-01-14 2021-09-07 华为技术有限公司 Data transmission technique
WO2018236932A1 (en) 2017-06-19 2018-12-27 Oshea Timothy James Encoding and decoding of information for wireless transmission using multi-antenna transceivers
EP3474459A1 (en) * 2017-10-18 2019-04-24 Fraunhofer-Gesellschaft zur Förderung der angewandten Forschung e.V. Receiver, transmitter, system and method employing space-delay precoding
EP3815256B1 (en) 2018-08-29 2022-05-04 Fraunhofer-Gesellschaft zur Förderung der angewandten Forschung e.V. Receiver, transmitter, system and method employing space-delay precoding
US11924863B2 (en) * 2019-10-28 2024-03-05 Qualcomm Incorporated Subband precoding signaling in a wireless communications network

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KR101124932B1 (en) 2005-05-30 2012-03-28 삼성전자주식회사 Apparatus and method for transmitting/receiving a data in mobile communication system with array antennas
US20150030058A9 (en) 2006-05-17 2015-01-29 Texas Instruments Inc. Cqi feedback for mimo deployments
US8107544B2 (en) 2007-05-16 2012-01-31 Motorola Mobility, Inc. Method and apparatus for feedback in closed loop transmitting
WO2008157620A2 (en) 2007-06-19 2008-12-24 Interdigital Technology Corporation Constant modulus mimo precoding for constraining transmit antenna power for differential feedback
US20090047999A1 (en) * 2007-08-16 2009-02-19 Samsung Electronics Co., Ltd. Method and system for beamforming communication in wireless communication systems
US7907552B2 (en) * 2008-01-15 2011-03-15 Alcatel-Lucent Usa Inc. MIMO communication system with user scheduling and modified precoding based on channel vector magnitudes
US8300616B2 (en) 2008-08-26 2012-10-30 Futurewei Technologies, Inc. System and method for wireless communications
JP5322327B2 (en) 2009-01-05 2013-10-23 マーベル ワールド トレード リミテッド Precoding of codebook for MIMO communication system
US8243582B2 (en) * 2009-01-28 2012-08-14 Mitsubishi Electric Research Laboratories, Inc. Feedback for transmit precoding in wireless networks
US8325843B2 (en) 2009-04-08 2012-12-04 Lg Electronics Inc. MIMO codebook generation
WO2010126317A2 (en) 2009-04-30 2010-11-04 Lg Electronics Inc. Method for setting precoder in open loop mimo system
US9088322B2 (en) * 2010-03-31 2015-07-21 Nokia Technologies Oy Codebook subset restriction based on codebook grouping
CN101877627B (en) 2010-06-21 2015-09-16 中兴通讯股份有限公司 The feedback method of channel condition information and terminal
US20110319027A1 (en) * 2010-06-25 2011-12-29 Motorola, Inc. Method for channel quality feedback in wireless communication systems
US9571173B2 (en) 2010-08-16 2017-02-14 Qualcomm Incorporated Enforcing constant modulus and finite alphabet properties in adaptive and dual-stage codebooks

Also Published As

Publication number Publication date
EP2680460A3 (en) 2014-04-02
US9571173B2 (en) 2017-02-14
KR101477122B1 (en) 2015-01-28
CN103119857A (en) 2013-05-22
JP5784728B2 (en) 2015-09-24
US20120039412A1 (en) 2012-02-16
CN103119857B (en) 2017-06-27
WO2012024326A1 (en) 2012-02-23
JP2013535940A (en) 2013-09-12
EP2680460B1 (en) 2018-12-19
JP2015201855A (en) 2015-11-12
EP2606579A1 (en) 2013-06-26
EP2606579B1 (en) 2018-10-03
KR20130042627A (en) 2013-04-26
EP2680460A2 (en) 2014-01-01

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