EP3794785A4 - Eigenvalue-based channel hardening and explicit feedback - Google Patents
Eigenvalue-based channel hardening and explicit feedback Download PDFInfo
- Publication number
- EP3794785A4 EP3794785A4 EP18919297.4A EP18919297A EP3794785A4 EP 3794785 A4 EP3794785 A4 EP 3794785A4 EP 18919297 A EP18919297 A EP 18919297A EP 3794785 A4 EP3794785 A4 EP 3794785A4
- Authority
- EP
- European Patent Office
- Prior art keywords
- eigenvalue
- based channel
- explicit feedback
- channel hardening
- hardening
- 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.)
- Withdrawn
Links
Classifications
-
- 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
- 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
- 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
- H04B7/0619—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
-
- 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
-
- 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
- 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
Landscapes
- Engineering & Computer Science (AREA)
- Computer Networks & Wireless Communication (AREA)
- Signal Processing (AREA)
- Power Engineering (AREA)
- Physics & Mathematics (AREA)
- Mathematical Physics (AREA)
- Mobile Radio Communication Systems (AREA)
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
PCT/CN2018/087367 WO2019218317A1 (en) | 2018-05-17 | 2018-05-17 | Eigenvalue-based channel hardening and explicit feedback |
Publications (2)
Publication Number | Publication Date |
---|---|
EP3794785A1 EP3794785A1 (en) | 2021-03-24 |
EP3794785A4 true EP3794785A4 (en) | 2022-05-04 |
Family
ID=68539550
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP18919297.4A Withdrawn EP3794785A4 (en) | 2018-05-17 | 2018-05-17 | Eigenvalue-based channel hardening and explicit feedback |
Country Status (3)
Country | Link |
---|---|
EP (1) | EP3794785A4 (en) |
CN (1) | CN112119617B (en) |
WO (1) | WO2019218317A1 (en) |
Families Citing this family (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN112470412B (en) | 2018-08-30 | 2023-12-26 | 上海诺基亚贝尔股份有限公司 | Frequency domain time domain channel hardening and overhead reduction |
WO2020094783A1 (en) * | 2018-11-08 | 2020-05-14 | Telefonaktiebolaget Lm Ericsson (Publ) | Measurement adaptation based on channel hardening |
CN113330728B (en) | 2019-01-17 | 2023-01-10 | 上海诺基亚贝尔股份有限公司 | Overhead reduction for channel state information feedback |
Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2011079294A1 (en) * | 2009-12-23 | 2011-06-30 | Qualcomm Incorporated | Cluster-specific reference signals for communication systems with multiple transmission points |
US20160072562A1 (en) * | 2014-09-10 | 2016-03-10 | Samsung Electronics Co., Ltd. | Channel state information reporting with basis expansion for advanced wireless communications systems |
US20160142115A1 (en) * | 2014-11-17 | 2016-05-19 | Samsung Electronics Co., Ltd. | Method and apparatus for precoding channel state information reference signal |
Family Cites Families (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
KR101978771B1 (en) * | 2013-01-31 | 2019-05-15 | 삼성전자주식회사 | Method and apparatus for estimating multiple stream multi user cqi based on per stream channel gain feedback in wireless communication system |
CN103650400B (en) * | 2013-08-21 | 2017-06-13 | 华为技术有限公司 | A kind of method, the apparatus and system of selection pre-coding matrix instruction |
US20150110210A1 (en) * | 2013-10-18 | 2015-04-23 | Nokia Solutions And Networks Oy | Channel state information acquisition and feedback for full dimension multiple input multiple output |
US9893777B2 (en) * | 2014-11-17 | 2018-02-13 | Samsung Electronics Co., Ltd. | Method and apparatus for precoding channel state information reference signal |
WO2016086971A1 (en) * | 2014-12-02 | 2016-06-09 | Nokia Solutions And Networks Management International Gmbh | Coded allocation of channel state information reference signals |
CN107294880B (en) * | 2016-03-31 | 2020-07-31 | 上海诺基亚贝尔股份有限公司 | Method and apparatus for determining channel information |
WO2018064801A1 (en) * | 2016-10-08 | 2018-04-12 | Nokia Technologies Oy | Explicit channel state information feedback |
-
2018
- 2018-05-17 CN CN201880093411.6A patent/CN112119617B/en active Active
- 2018-05-17 WO PCT/CN2018/087367 patent/WO2019218317A1/en active Application Filing
- 2018-05-17 EP EP18919297.4A patent/EP3794785A4/en not_active Withdrawn
Patent Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2011079294A1 (en) * | 2009-12-23 | 2011-06-30 | Qualcomm Incorporated | Cluster-specific reference signals for communication systems with multiple transmission points |
US20160072562A1 (en) * | 2014-09-10 | 2016-03-10 | Samsung Electronics Co., Ltd. | Channel state information reporting with basis expansion for advanced wireless communications systems |
US20160142115A1 (en) * | 2014-11-17 | 2016-05-19 | Samsung Electronics Co., Ltd. | Method and apparatus for precoding channel state information reference signal |
Non-Patent Citations (2)
Title |
---|
JIN YINGNI ET AL: "A New Design and Multiport Performance Evaluation for 3D Massive MIMO System", 2016 IEEE 84TH VEHICULAR TECHNOLOGY CONFERENCE (VTC-FALL), IEEE, 18 September 2016 (2016-09-18), pages 1 - 5, XP033078701, DOI: 10.1109/VTCFALL.2016.7880862 * |
See also references of WO2019218317A1 * |
Also Published As
Publication number | Publication date |
---|---|
WO2019218317A1 (en) | 2019-11-21 |
CN112119617B (en) | 2023-04-25 |
CN112119617A (en) | 2020-12-22 |
EP3794785A1 (en) | 2021-03-24 |
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RIC1 | Information provided on ipc code assigned before grant |
Ipc: H04B 7/06 20060101ALI20211207BHEP Ipc: H04B 7/0456 20170101ALI20211207BHEP Ipc: H04B 7/0417 20170101ALI20211207BHEP Ipc: H04L 25/02 20060101ALI20211207BHEP Ipc: H04L 25/03 20060101AFI20211207BHEP |
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Ipc: H04B 7/06 20060101ALI20220329BHEP Ipc: H04B 7/0456 20170101ALI20220329BHEP Ipc: H04B 7/0417 20170101ALI20220329BHEP Ipc: H04L 25/02 20060101ALI20220329BHEP Ipc: H04L 25/03 20060101AFI20220329BHEP |
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