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
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.
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) |
Families Citing this family (10)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
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 |
Family Cites Families (15)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
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 |
-
2011
- 2011-08-15 US US13/210,052 patent/US9571173B2/en active Active
- 2011-08-16 IN IN812CHN2013 patent/IN2013CN00812A/en unknown
- 2011-08-16 JP JP2013524935A patent/JP5784728B2/en not_active Expired - Fee Related
- 2011-08-16 KR KR1020137006547A patent/KR101477122B1/en active IP Right Grant
- 2011-08-16 EP EP11752385.2A patent/EP2606579B1/en not_active Not-in-force
- 2011-08-16 WO PCT/US2011/047972 patent/WO2012024326A1/en active Application Filing
- 2011-08-16 EP EP13185945.6A patent/EP2680460B1/en not_active Not-in-force
- 2011-08-16 CN CN201180044133.3A patent/CN103119857B/en active Active
-
2015
- 2015-05-13 JP JP2015098414A patent/JP2015201855A/en active Pending
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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