JP2011518458A - 開ループ空間多重化モードでの信号送受信方法 - Google Patents
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- 230000007704 transition Effects 0.000 description 12
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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
- H04B7/0413—MIMO systems
- H04B7/0456—Selection of precoding matrices or codebooks, e.g. using matrices antenna weighting
- H04B7/0486—Selection of precoding matrices or codebooks, e.g. using matrices antenna weighting taking channel rank into account
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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
- H04B7/0667—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 delayed versions of same signal
- H04B7/0671—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 delayed versions of same signal using different delays between antennas
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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
- H04B7/0682—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 using phase diversity (e.g. phase sweeping)
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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
- H04B7/0697—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 spatial multiplexing
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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
- H04B7/0621—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
- H04B7/0639—Using selective indices, e.g. of a codebook, e.g. pre-distortion matrix index [PMI] or for beam selection
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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
- H04L25/03—Shaping networks in transmitter or receiver, e.g. adaptive shaping networks
- H04L25/03891—Spatial equalizers
- H04L25/03898—Spatial equalizers codebook-based design
-
- 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
- H04L27/2626—Arrangements specific to the transmitter only
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Abstract
【解決手段】開ループ空間多重化伝送モードで伝送アンテナが2個、ランク2の場合、基地局は、循環遅延ダイバーシティ(CDD)方式によってプリコーディングを行い、単位行列に対応する第1の行列(W)、対角行列に対応する第2の行列(D)及びユニタリ行列に対応する第3の行列(U)が順次に掛け算された行列(WDU)を用いてプリコーディングした後、プリコーディングされた信号を伝送し、これは、実質的に対角行列に対応する第2の行列(D)及びユニタリ行列に対応する第3の行列(U)が掛け算された行列(DU)を用いてプリコーディングした後、プリコーディングされた信号を伝送するのと同一であると見なせる。端末は、受信されたランク指示子及び伝送アンテナの個数により基地局の伝送方式を推定し信号を受信する。
【選択図】図6
Description
Claims (8)
- 開ループ空間多重化(open―loop SM(spatial multiplexing))伝送モードでユーザ器機(User Equipment;UE)が信号を受信する方法において、
基地局からランク指示子(RI)及びアンテナ個数情報を受信し、
伝送アンテナの個数が2である場合、前記基地局の信号伝送が、単位行列に対応する第1の行列(W)、対角行列に対応する第2の行列(D)及びユニタリ行列に対応する第3の行列(U)が順次に掛け算された行列(WDU)によるプリコーディングを経て行われたと推定し、
前記推定によって信号を受信することを含む、信号受信方法。 - 前記ランク指示子が1より大きい場合、前記基地局の信号伝送が循環遅延ダイバーシティ(CDD)方式によって行われたと推定することをさらに含む、請求項1に記載の信号受信方法。
- 前記第2の行列(D)は、
前記伝送アンテナの個数が2で、ランク指示子(RI)によるランクが2である場合、2×2の形態を有する、請求項1に記載の信号受信方法。 - 前記開ループ空間多重化(open―loop SM)伝送モードで、前記基地局は、前記第1の行列(W)を、
前記ユーザ機器は、前記基地局にプリコーディング行列インデックス(PMI)をフィードバックしない、請求項1に記載の信号受信方法。 - 開ループ空間多重化(open―loop SM(spatial multiplexing))伝送モードで基地局が信号を伝送する方法において、
伝送ランクが1より大きい場合、循環遅延ダイバーシティ(CDD)方式によって信号を伝送することを含み、
前記信号伝送は、
伝送アンテナの個数が2である場合、伝送信号に、単位行列に対応する第1の行列(W)、対角行列に対応する第2の行列(D)及びユニタリ行列に対応する第3の行列(U)が順次に掛け算された行列(WDU)によるプリコーディングを行い、
前記プリコーディングされた信号を資源要素にマッピングして伝送することを含む、信号伝送方法。 - 前記第2の行列(D)は、
前記伝送アンテナの個数が2で、前記伝送ランクが2である場合、2×2の形態を有する、請求項5に記載の信号伝送方法。 - 前記開ループ空間多重化(open―loop SM)伝送モードで、前記基地局は、前記第1の行列(W)を、
前記基地局にユーザ器機からプリコーディング行列インデックス(PMI)がフィードバックされない、請求項5に記載の信号伝送方法。 - 開ループ空間多重化(open―loop SM(spatial multiplexing))伝送モードで基地局が信号を伝送する方法において、
伝送アンテナの個数が2で、伝送ランクが2である場合、循環遅延ダイバーシティ(CDD)方式によって伝送信号をプリコーディングし、対角行列に対応する第1の行列(D)とユニタリ行列に対応する第2の行列(U)が順次掛け算された行列(DU)によってプリコーディングを行い、
前記プリコーディングされた信号を資源要素にマッピングして伝送することを含む、信号伝送方法。
Applications Claiming Priority (5)
Application Number | Priority Date | Filing Date | Title |
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US3647508P | 2008-03-14 | 2008-03-14 | |
US61/036,475 | 2008-03-14 | ||
KR1020080080461A KR101328961B1 (ko) | 2008-03-14 | 2008-08-18 | 개루프 공간 다중화 모드에서 신호 송수신 방법 |
KR10-2008-0080461 | 2008-08-18 | ||
PCT/KR2009/000335 WO2009113766A1 (en) | 2008-03-14 | 2009-01-22 | Method for transmitting and receiving signals in open-loop spatial multiplexing mode |
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JP2011518458A true JP2011518458A (ja) | 2011-06-23 |
JP2011518458A5 JP2011518458A5 (ja) | 2012-06-28 |
JP5236753B2 JP5236753B2 (ja) | 2013-07-17 |
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JP2010550586A Active JP5236753B2 (ja) | 2008-03-14 | 2009-01-22 | 開ループ空間多重化モードでの信号送受信方法 |
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US (1) | US8320488B2 (ja) |
EP (1) | EP2272180B1 (ja) |
JP (1) | JP5236753B2 (ja) |
KR (1) | KR101328961B1 (ja) |
CN (1) | CN102017449B (ja) |
ES (1) | ES2525338T3 (ja) |
WO (1) | WO2009113766A1 (ja) |
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CN102017449B (zh) | 2013-09-11 |
ES2525338T3 (es) | 2014-12-22 |
KR20090098643A (ko) | 2009-09-17 |
CN102017449A (zh) | 2011-04-13 |
WO2009113766A1 (en) | 2009-09-17 |
EP2272180A4 (en) | 2013-10-16 |
KR101328961B1 (ko) | 2013-11-13 |
EP2272180A1 (en) | 2011-01-12 |
US8320488B2 (en) | 2012-11-27 |
US20100166094A1 (en) | 2010-07-01 |
JP5236753B2 (ja) | 2013-07-17 |
EP2272180B1 (en) | 2014-10-22 |
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