JP2007518346A - Mimoシステムにおける信号送受信方法 - Google Patents
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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
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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
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- H—ELECTRICITY
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- H04B7/00—Radio transmission systems, i.e. using radiation field
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- 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
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- 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
- H04L1/06—Arrangements for detecting or preventing errors in the information received by diversity reception using space diversity
- H04L1/0618—Space-time coding
- H04L1/0625—Transmitter arrangements
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- H—ELECTRICITY
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- H04L1/02—Arrangements for detecting or preventing errors in the information received by diversity reception
- H04L1/06—Arrangements for detecting or preventing errors in the information received by diversity reception using space diversity
- H04L1/0618—Space-time coding
- H04L1/0675—Space-time coding characterised by the signaling
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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
- H04B7/06—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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- 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
- H04B7/0673—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 feedback from receiving side
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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
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
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- H04L1/0003—Systems modifying transmission characteristics according to link quality, e.g. power backoff by adapting the transmission rate by switching between different modulation schemes
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- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L1/00—Arrangements for detecting or preventing errors in the information received
- H04L1/0001—Systems modifying transmission characteristics according to link quality, e.g. power backoff
- H04L1/0009—Systems modifying transmission characteristics according to link quality, e.g. power backoff by adapting the channel coding
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Abstract
Description
Double STTD
Double STTD(D‐STTD)は2つの送信アンテナを用いるSTTD技術をMIMO(Multi Input Multi Output)システムに拡張した技術であり、4つの送信アンテナを用いるD‐STTDシステムの場合は2つのSTTD対を含む。
ビーム形成が結合されたSTTD
図2はビーム形成が結合された従来のSTTDシステムの構成図である。図2に示すように、D‐STTDシステムは2つの送信アンテナのみを用いる場合に適用することのできるビーム形成部35、36をさらに含む。
Claims (20)
- 複数の送信アンテナ対を介してデータを伝送する時空間伝送ダイバーシティ(STTD)システムにおいて、
受信端で全てのアンテナ対に対して信号対干渉雑音比(SINR)を計算してSTTD伝送に用いるアンテナ対を決定する段階と、
前記決定されたアンテナ対に関する決定情報を送信端に通知する段階とを含むことを特徴とする信号伝送方法。 - 前記決定されたアンテナ対が最大のSINRを有することを特徴とする請求項1に記載の信号伝送方法。
- 前記決定されたアンテナ対は瞬間最大受信データ量が最大となるアンテナ対であることを特徴とする請求項2に記載の信号伝送方法。
- 前記アンテナ対決定情報が送受信端間に指定された別個のフィードバック信号により伝送されることを特徴とする請求項1に記載の信号伝送方法。
- 前記アンテナ対決定情報が送受信端間に指定された他の情報と組み合わせて伝送されることを特徴とする請求項1に記載の信号伝送方法。
- 前記他の情報が各アンテナ対で用いる変調及び符号化セット(MCS)であることを特徴とする請求項5に記載の信号伝送方法。
- 前記2つの情報がテーブル形態で管理及び伝送されることを特徴とする請求項5に記載の信号伝送方法。
- 少なくとも2つ以上の送信アンテナ対を介して時空間伝送ダイバーシティ(STTD)を行う多重アンテナシステムにおいて、
受信端が全ての送信アンテナ対に対して信号対干渉雑音比(SINR)を計算する段階と、
それぞれのアンテナ対のうち最大のSINRを有するアンテナ対を決定して前記決定された情報を第1フィードバック情報により送信端にフィードバックする段階と、
前記決定されたアンテナ対に用いられる変調及び符号化セット(MCS)を第2フィードバック情報により送信端にフィードバックする段階と、
前記MCS並びに第1及び第2フィードバック信号により決定されたアンテナ対を用いて送信端からSTTD伝送を行う段階とを含むことを特徴とする信号伝送方法。 - 前記第1及び第2フィードバック信号が異なることを特徴とする請求項8に記載の信号伝送方法。
- 前記最大のSINRを有するアンテナ対は瞬間最大受信データ量が最大となるアンテナ対であることを特徴とする請求項8に記載の信号伝送方法。
- 前記アンテナ対とMCSが指定されたテーブル形態で管理及び伝送されることを特徴とする請求項8に記載の信号伝送方法。
- 複数のアンテナを介して時空間多重化されてビーム形成されるシンボルを伝送するシステムにおいて、
各送信アンテナに対してチャネル行列の固有ベクトルを計算して前記計算された固有ベクトルを送信端にフィードバックする段階と、
前記フィードバックされた情報をウェイトベクトルとして用いて送信端で時空間多重化された送信シンボルに対してビーム形成を行う段階とを含むことを特徴とする信号伝送方法。 - 前記チャネル行列が送信アンテナ間の相関値と、受信アンテナ間の相関値と、無線チャネル環境におけるチャネル値とを全て含むことを特徴とする請求項12に記載の信号伝送方法。
- 前記固有ベクトルが受信端から送信端にフィードバックされ、受信端で推定した前記チャネル行列の最大固有値に該当することを特徴とする請求項12に記載の信号伝送方法。
- 送信シンボルに対して時空間多重化(STTD)及びビーム形成を行って前記シンボルを受信端に伝送するシステムにおいて、
瞬間最大受信データ量が最大の送信アンテナ対に対してチャネル行列の固有ベクトルを計算して前記計算された固有ベクトルを送信端にフィードバックする段階と、
前記フィードバックされた固有ベクトルをウェイトベクトルとして用いて送信端で各送信アンテナ対にSTTDが行われた送信シンボルに対してビーム形成を行う段階とを含むことを特徴とする信号伝送方法。 - 前記ウェイトベクトルが各アンテナ対に対する実際のチャネル行列の固有ベクトルであることを特徴とする請求項15に記載の信号伝送方法。
- 前記チャネル行列が送信アンテナ間の相関値と、受信アンテナ間の相関値と、無線チャネル環境におけるチャネル値とを全て含むことを特徴とする請求項15に記載の信号伝送方法。
- 前記送信アンテナ対が最大の信号対干渉雑音比(SINR)を有するアンテナ対であることを特徴とする請求項15に記載の信号伝送方法。
- 4つ以上の送信アンテナを介して時空間多重化(STTD)及びビーム形成が行われたシンボルを伝送するシステムにおいて、
送信アンテナ対に対して信号対干渉雑音比(SINR)を計算する段階と、
それぞれのアンテナ対のうち最大のSINRを有するアンテナ対を決定する段階と、
前記決定されたアンテナ対に対してチャネル行列の固有ベクトルを計算する段階と、
前記アンテナ対決定情報と固有ベクトルを送信端にフィードバックする段階と、
前記フィードバックされたアンテナ対決定情報によってSTTDを行い、その後前記固有ベクトルをウェイトベクトルとして用いてビーム形成を行う段階とを含むことを特徴とする信号伝送方法。 - 前記最大のSINRを有するアンテナ対は瞬間最大受信データ量が最大のアンテナ対であることを特徴とする請求項19に記載の信号伝送方法。
Applications Claiming Priority (5)
Application Number | Priority Date | Filing Date | Title |
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US53771404P | 2004-01-20 | 2004-01-20 | |
KR1020040008450A KR20050080372A (ko) | 2004-02-09 | 2004-02-09 | 다수의 송신수신 안테나를 사용하는 이동통신시스템에서의 신호 전송방법 |
KR1020040008446A KR20050080369A (ko) | 2004-02-09 | 2004-02-09 | 다수의 송신수신 안테나를 사용하는 이동통신시스템에서의 신호 전송방법 |
US54593404P | 2004-02-20 | 2004-02-20 | |
PCT/KR2005/000164 WO2005069505A1 (en) | 2004-01-20 | 2005-01-18 | Method for transmitting/receiving signal in mimo system |
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JP2007518346A true JP2007518346A (ja) | 2007-07-05 |
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JP2006549143A Pending JP2007518346A (ja) | 2004-01-20 | 2005-01-18 | Mimoシステムにおける信号送受信方法 |
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US (2) | US7623587B2 (ja) |
EP (1) | EP1709752B1 (ja) |
JP (1) | JP2007518346A (ja) |
KR (1) | KR100850990B1 (ja) |
BR (1) | BRPI0506904A (ja) |
HR (1) | HRP20060253A2 (ja) |
WO (1) | WO2005069505A1 (ja) |
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- 2005-01-18 KR KR1020067014441A patent/KR100850990B1/ko not_active IP Right Cessation
- 2005-01-18 JP JP2006549143A patent/JP2007518346A/ja active Pending
- 2005-01-18 WO PCT/KR2005/000164 patent/WO2005069505A1/en active Application Filing
- 2005-01-18 EP EP05721817.4A patent/EP1709752B1/en not_active Not-in-force
- 2005-01-19 US US11/038,675 patent/US7623587B2/en not_active Expired - Fee Related
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JP2010524395A (ja) * | 2007-04-09 | 2010-07-15 | アルカテル−ルーセント ユーエスエー インコーポレーテッド | 干渉の測定によるチャネル行列の決定 |
JP2012500554A (ja) * | 2008-08-20 | 2012-01-05 | エルジー イノテック カンパニー,リミティド | 多重入出力通信システム及びその制御方法 |
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EP1709752A4 (en) | 2012-02-01 |
WO2005069505A1 (en) | 2005-07-28 |
KR20070012638A (ko) | 2007-01-26 |
EP1709752A1 (en) | 2006-10-11 |
US8111774B2 (en) | 2012-02-07 |
US20090310701A1 (en) | 2009-12-17 |
US20050157807A1 (en) | 2005-07-21 |
HRP20060253A2 (en) | 2006-11-30 |
US7623587B2 (en) | 2009-11-24 |
BRPI0506904A (pt) | 2007-06-26 |
EP1709752B1 (en) | 2016-09-14 |
KR100850990B1 (ko) | 2008-08-12 |
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