JP5740415B2 - 基地局装置および送信方法 - Google Patents
基地局装置および送信方法 Download PDFInfo
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- JP5740415B2 JP5740415B2 JP2013004407A JP2013004407A JP5740415B2 JP 5740415 B2 JP5740415 B2 JP 5740415B2 JP 2013004407 A JP2013004407 A JP 2013004407A JP 2013004407 A JP2013004407 A JP 2013004407A JP 5740415 B2 JP5740415 B2 JP 5740415B2
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- precoding matrix
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- 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
- H04L27/2613—Structure of the reference signals
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- 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
- H04L25/03006—Arrangements for removing intersymbol interference
- H04L25/03343—Arrangements at the transmitter end
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- 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
- H04L5/005—Allocation of pilot signals, i.e. of signals known to the receiver of common pilots, i.e. pilots destined for multiple users or terminals
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- 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
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- Engineering & Computer Science (AREA)
- Signal Processing (AREA)
- Computer Networks & Wireless Communication (AREA)
- Power Engineering (AREA)
- Physics & Mathematics (AREA)
- Mathematical Physics (AREA)
- Mobile Radio Communication Systems (AREA)
- Radio Transmission System (AREA)
Description
本実施の形態では、基地局は、周波数領域で連続するサブキャリア間のプレコーディング行列が連続であるか否かを判定する。
実施の形態1では、周波数領域で連続するサブキャリア間のプレコーディング行列が連続であるか否かを判定したのに対し、本実施の形態では、周波数領域で連続する複数のサブキャリアから成る各サブキャリア群である複数のリソースブロックグループ間において複数のプレコーディング行列が連続するか否かを判定する。
V(f1)HV(f0)≒1
V(f2)HV(f1)≠1
V(f3)HV(f2)≠1
すなわち、プレコーディング行列連続性判定部120では、プレコーディング行列Φ(f0)とプレコーディング行列Φ(f1)とが連続と判定され、プレコーディング行列Φ(f1)とプレコーディング行列Φ(f2)とが不連続と判定され、プレコーディング行列Φ(f2)とプレコーディング行列Φ(f3)とが不連続と判定される。すなわち、プレコーディング行列Φ(f0)とプレコーディング行列Φ(f1)との間ではスムージング処理の適用が可能であり、プレコーディング行列Φ(f1)とプレコーディング行列Φ(f2)との間ではスムージング処理の適用が不可であり、プレコーディング行列Φ(f2)とプレコーディング行列Φ(f3)との間ではスムージング処理の適用が不可である。
Claims (2)
- 複数のサブキャリアで構成されたリソースブロックにそれぞれマッピングされたデータ及び個別参照信号を含んだ信号にプレコーティングを行うプレコーディング部と、
周波数領域で連続する複数のリソースブロックの所定数であって、伝搬路状態に応じて同一のプレコーディングが適用されたリソースブロックの単位数を特定するための情報と、プレコーティングされた前記信号とを送信する送信部と、
を具備する基地局装置。 - 複数のサブキャリアで構成されたリソースブロックにそれぞれマッピングされたデータ及び個別参照信号を含んだ信号にプレコーティングを行い、
周波数領域で連続する複数のリソースブロックの所定数であって、伝搬路状態に応じて同一のプレコーディングが適用されたリソースブロックの単位数を特定するための情報と、プレコーティングされた前記信号とを送信する、
送信方法。
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JP2013004407A JP5740415B2 (ja) | 2007-12-25 | 2013-01-15 | 基地局装置および送信方法 |
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JP2007332515 | 2007-12-25 | ||
JP2007332515 | 2007-12-25 | ||
JP2013004407A JP5740415B2 (ja) | 2007-12-25 | 2013-01-15 | 基地局装置および送信方法 |
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JP2009546950A Division JP5226011B2 (ja) | 2007-12-25 | 2008-12-24 | 端末装置および復調方法 |
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JP2013102503A JP2013102503A (ja) | 2013-05-23 |
JP5740415B2 true JP5740415B2 (ja) | 2015-06-24 |
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JP2009546950A Active JP5226011B2 (ja) | 2007-12-25 | 2008-12-24 | 端末装置および復調方法 |
JP2013004407A Active JP5740415B2 (ja) | 2007-12-25 | 2013-01-15 | 基地局装置および送信方法 |
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JP2009546950A Active JP5226011B2 (ja) | 2007-12-25 | 2008-12-24 | 端末装置および復調方法 |
Country Status (4)
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US (1) | US9237049B2 (ja) |
EP (1) | EP2237458B1 (ja) |
JP (2) | JP5226011B2 (ja) |
WO (1) | WO2009081580A1 (ja) |
Families Citing this family (11)
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US8838051B1 (en) | 2009-02-19 | 2014-09-16 | Qualcomm Incorporated | Transmitter beamforming power control |
US9065617B2 (en) * | 2009-08-17 | 2015-06-23 | Qualcomm Incorporated | MIMO related signaling in wireless communication |
KR20110038994A (ko) * | 2009-10-09 | 2011-04-15 | 삼성전자주식회사 | 다중 안테나를 이용하는 무선 통신 시스템에서 다중 사용자 제어 채널 송수신 방법 및 장치 |
US8594216B2 (en) | 2010-08-25 | 2013-11-26 | Qualcomm Incorporated | Beamforming feedback options for MU-MIMO |
US9007263B2 (en) | 2010-09-09 | 2015-04-14 | Qualcomm Incorporated | Phase rotation techniques in a multi-user wireless communication environment |
US10638464B2 (en) | 2011-04-01 | 2020-04-28 | Futurewei Technologies, Inc. | System and method for transmission and reception of control channels in a communications system |
US9723496B2 (en) * | 2011-11-04 | 2017-08-01 | Qualcomm Incorporated | Method and apparatus for interference cancellation by a user equipment using blind detection |
US8896521B2 (en) | 2012-04-24 | 2014-11-25 | Qualcomm Mems Technologies, Inc. | Metal-insulator-metal capacitors on glass substrates |
US9929812B2 (en) * | 2015-12-07 | 2018-03-27 | Qualcomm Incorporated | Techniques for channel estimation using user equipment specific reference signals based on smoothed precoders in a frequency domain |
US10404340B2 (en) * | 2016-10-11 | 2019-09-03 | Qualcomm Incorporated | Dynamic adjustment of transmission properties with continuous precoding |
US11621750B2 (en) * | 2021-06-29 | 2023-04-04 | Qualcomm Incorporated | Demodulator report for smart receiver power optimization |
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JP2004260322A (ja) | 2003-02-24 | 2004-09-16 | Mitsubishi Electric Corp | マルチキャリア無線通信システム、送信装置および受信装置 |
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2008
- 2008-12-24 EP EP08863562.8A patent/EP2237458B1/en active Active
- 2008-12-24 JP JP2009546950A patent/JP5226011B2/ja active Active
- 2008-12-24 WO PCT/JP2008/003931 patent/WO2009081580A1/ja active Application Filing
- 2008-12-24 US US12/810,126 patent/US9237049B2/en active Active
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Also Published As
Publication number | Publication date |
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JPWO2009081580A1 (ja) | 2011-05-06 |
US9237049B2 (en) | 2016-01-12 |
JP5226011B2 (ja) | 2013-07-03 |
EP2237458A4 (en) | 2017-01-25 |
US20100272201A1 (en) | 2010-10-28 |
WO2009081580A1 (ja) | 2009-07-02 |
EP2237458B1 (en) | 2018-08-08 |
EP2237458A1 (en) | 2010-10-06 |
JP2013102503A (ja) | 2013-05-23 |
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