JP6275754B2 - Mimo−ofdmシステムにおいて空間周波数ブロック符号化、空間多重化、およびビーム形成を組み合わせる方法および装置 - Google Patents
Mimo−ofdmシステムにおいて空間周波数ブロック符号化、空間多重化、およびビーム形成を組み合わせる方法および装置 Download PDFInfo
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- 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
- H04B7/0408—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas using two or more beams, i.e. beam diversity
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- H04B7/00—Radio transmission systems, i.e. using radiation field
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- 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
- H04B7/0617—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 for beam forming
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- H—ELECTRICITY
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- 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]
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- 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
- H04B7/068—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 space frequency diversity
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- 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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- H04L1/00—Arrangements for detecting or preventing errors in the information received
- H04L1/02—Arrangements for detecting or preventing errors in the information received by diversity reception
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- H04L1/0002—Systems modifying transmission characteristics according to link quality, e.g. power backoff by adapting the transmission rate
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- H04L25/0248—Eigen-space methods
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Description
ここで、UおよびVはユニタリ行列であり、Dは対角行列である。U∈CnRxnRおよびV∈CnTxnTである。次いで、送信シンボルベクトルsに対して、送信事前符号化は単に以下のように実行される。
受信された信号は以下のようになる。
ここでnは、チャネルに発生したノイズである。受信機は、整合フィルタを使用することにより分解を完結する。
固有ビームのチャネルゲインを正規化した後、送信シンボルsの推定は以下のようになる。
または使用せずに様々な組合せで使用されうる。
Claims (6)
- データシンボルを送信するデバイスであって、
4つのアンテナと、
チャネル状態情報(CSI)を受信するよう構成された受信機であり、前記CSIはサブキャリアの複数のグループの各々についてのチャネル品質情報(CQI)を含んでいる、受信機と、
空間多重を用いる送信についてのストリームの数を決定するよう、且つ各CQIに基づいて前記サブキャリアの複数のグループの各々についての変調および符号化方式を決定するよう、構成された送信機と、
前記サブキャリアの複数のグループおよびストリームの前記決定された数を用いて第1のデータシンボルを送信するようさらに構成された前記送信機と、
空間周波数ブロック符号化(SFBC)を用いて第2のデータシンボルを送信するようさらに構成された前記送信機であり、前記第2のデータシンボルの各組がSFBCで符号化されて4つのアンテナのうちの2つのみで送信される、前記送信機と
を備えた、デバイス。 - 前記送信機は、多入力多出力(MIMO)を用いてデータシンボルを送信するようさらに構成されている、請求項1に記載のデバイス。
- データシンボルを受信するデバイスであって、
チャネル状態情報(CSI)を送信するよう構成された送信機であり、前記CSIはサブキャリアの複数のグループの各々についてのチャネル品質情報(CQI)を含んでいる、送信機と、
空間多重ならびに各CQIに基づいて決定された前記サブキャリアの複数のグループの各々についての変調および符号化方式を用いて送信されたいくつかのストリームで第1のデータシンボルを受信するよう構成された受信機と、
第2のデータシンボルを受信するようさらに構成された前記受信機であり、前記第2のデータシンボルは空間周波数ブロック符号化(SFBC)を用いて送信されており、且つ前記第2のデータシンボルの各組が4つのアンテナのうちの2つのみで送信されるようにSFBCで符号化されている、前記受信機と
を備えた、デバイス。 - 前記受信機は、多入力多出力(MIMO)を用いてデータシンボルを受信するようさらに構成されている、請求項3に記載のデバイス。
- データシンボルを送信する方法であって、
チャネル状態情報(CSI)を受信することであり、前記CSIはサブキャリアの複数のグループの各々についてのチャネル品質情報(CQI)を含んでいる、ことと、
空間多重を用いる送信についてのストリームの数、並びに各CQIに基づいて前記サブキャリアの複数のグループの各々についての変調および符号化方式を決定することと、
前記サブキャリアの複数のグループおよびストリームの前記決定された数を用いて第1のデータシンボルを送信することと、
空間周波数ブロック符号化(SFBC)を用いて第2のデータシンボルを送信することであり、前記第2のデータシンボルの各組がSFBCで符号化されて4つのアンテナのうちの2つのみで送信される、ことと
を含む、方法。 - データシンボルは、多入力多出力(MIMO)を用いて受信される、請求項5に記載の方法。
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US62721004P | 2004-11-12 | 2004-11-12 | |
US60/627,210 | 2004-11-12 | ||
US11/254,358 US8130855B2 (en) | 2004-11-12 | 2005-10-20 | Method and apparatus for combining space-frequency block coding, spatial multiplexing and beamforming in a MIMO-OFDM system |
US11/254,358 | 2005-10-20 |
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JP2016106470A JP2016106470A (ja) | 2016-06-16 |
JP2016106470A5 JP2016106470A5 (ja) | 2016-12-28 |
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JP2012201622A Active JP5632432B2 (ja) | 2004-11-12 | 2012-09-13 | Mimo−ofdmシステムにおいて空間周波数ブロック符号化、空間多重化、およびビーム形成を組み合わせる方法および装置 |
JP2014005288A Active JP5886882B2 (ja) | 2004-11-12 | 2014-01-15 | Mimo−ofdmシステムにおいて空間周波数ブロック符号化、空間多重化、およびビーム形成を組み合わせる方法および装置 |
JP2014234661A Active JP6491857B2 (ja) | 2004-11-12 | 2014-11-19 | Mimo−ofdmシステムにおいて空間周波数ブロック符号化、空間多重化、およびビーム形成を組み合わせる方法および装置 |
JP2016001358A Active JP6275754B2 (ja) | 2004-11-12 | 2016-01-06 | Mimo−ofdmシステムにおいて空間周波数ブロック符号化、空間多重化、およびビーム形成を組み合わせる方法および装置 |
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JP2012201622A Active JP5632432B2 (ja) | 2004-11-12 | 2012-09-13 | Mimo−ofdmシステムにおいて空間周波数ブロック符号化、空間多重化、およびビーム形成を組み合わせる方法および装置 |
JP2014005288A Active JP5886882B2 (ja) | 2004-11-12 | 2014-01-15 | Mimo−ofdmシステムにおいて空間周波数ブロック符号化、空間多重化、およびビーム形成を組み合わせる方法および装置 |
JP2014234661A Active JP6491857B2 (ja) | 2004-11-12 | 2014-11-19 | Mimo−ofdmシステムにおいて空間周波数ブロック符号化、空間多重化、およびビーム形成を組み合わせる方法および装置 |
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US (4) | US8130855B2 (ja) |
EP (2) | EP2101435B1 (ja) |
JP (5) | JP5238257B2 (ja) |
KR (6) | KR101315551B1 (ja) |
CN (4) | CN105071847A (ja) |
AU (2) | AU2005306875B2 (ja) |
BR (1) | BRPI0516688A (ja) |
CA (2) | CA2587846C (ja) |
IL (2) | IL183081A0 (ja) |
MX (1) | MX2007005536A (ja) |
NO (1) | NO340390B1 (ja) |
SG (1) | SG170650A1 (ja) |
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