JP2013514703A - 交差偏波アンテナ用のmimoフィードバックスキーム - Google Patents
交差偏波アンテナ用のmimoフィードバックスキーム Download PDFInfo
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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
- H04B7/10—Polarisation diversity; Directional diversity
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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
- H04B7/063—Parameters other than those covered in groups H04B7/0623 - H04B7/0634, e.g. channel matrix rank or transmit mode selection
-
- 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
- H04B7/0641—Differential feedback
-
- 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
- H04B7/0663—Feedback reduction using vector or matrix manipulations
Abstract
【選択図】図1
Description
本願は、2009年12月17日出願の米国仮特許出願第61/287,652号および2010年1月11日出願の米国仮特許出願第61/294,000号の利益を主張し、これらの開示内容の全体を本明細書に参照として組み込む。
として表されるこれらの行列のクロネッカー積は、m・p×n・qの行列であり、当該行列の要素はcαβ=xijyklと定義され、xijおよびyklはそれぞれXおよびYの要素を表し、
であり、β=q(j−1)+lである。)
および、
および、
である。
に、また、数18において
に)。
Claims (20)
- 第1の偏波性を有する第1セットのアンテナと、前記第1の偏波性に直交する第2の偏波性を有する第2セットのアンテナとを有するアンテナアレイから複数の通信チャネルを介して多重入出力(MIMO)信号を受信する段階と、
前記第1セットまたは前記第2セット内のアンテナ間の第1の相互関係に関する第1のフィードバック情報を算出する段階と、
前記第1セットのアンテナと前記第2セットのアンテナとの間の第2の相互関係に少なくとも関する第2のフィードバック情報を算出する段階と、
前記第1のフィードバック情報を第1の時間/周波数粒度で送信し、前記第2のフィードバック情報を、前記第1の時間/周波数粒度より細かい第2の時間/周波数粒度で送信する段階と
を備える方法。 - 前記第1のフィードバック情報および前記第2のフィードバック情報を算出する段階は、前記第1の相互関係に基づく第1の行列と前記第2の相互関係に基づく第2の行列とのクロネッカー積として表されるフィードバック行列を算出する段階を有する請求項1に記載の方法。
- 第1のフィードバック情報と前記第2のフィードバック情報を送信する段階は、前記第1の行列を前記第1の時間/周波数粒度で報告し、前記第2の行列を前記第2の時間/周波数粒度で報告する段階を有する請求項2に記載の方法。
- 前記フィードバック行列を算出する段階は、空間相関関数(SCF)行列の要素を推定する段階を有する請求項2に記載の方法。
- 前記フィードバック行列を算出する段階は、前記MIMO信号の後続の送信に適用されるプリコーディング行列を選択する段階を有する請求項2に記載の方法。
- 前記プリコーディング行列を選択する段階は、所定セットのプリコーディング行列から前記プリコーディング行列を選択する段階を有し、前記所定セットのプリコーディング行列のうち少なくともいくつかは、それぞれ、前記第1の相互関係に基づく第1の行列と前記第2の相互関係に基づく第2の行列とのクロネッカー積として表される請求項5に記載の方法。
- 前記第1のフィードバック情報および前記第2のフィードバック情報を前記第1の時間/周波数粒度および前記第2の時間/周波数粒度で送信する段階は、前記第2のフィードバック情報だけを送信し、前記第1のフィードバック情報を送信しない段階を有する請求項1または2に記載の方法。
- 前記第2のフィードバック情報を算出する段階は、前記第1セットのアンテナのうち1つ以上と、前記第2セットのアンテナのうち1つ以上とに基づく少なくとも1つの追加的フィードバック・パラメーターに基づいて前記第2のフィードバック情報を算出する段階を有する請求項1または2に記載の方法。
- 前記第1のフィードバック情報を算出する段階は、第1の時間間隔および第1の周波数帯域で前記第1のフィードバック情報を算出する段階を有し、
前記第2のフィードバック情報を算出する段階は、前記第1の時間間隔より短い第2の時間間隔および前記第1の周波数帯域より狭い第2の周波数帯域で前記第2のフィードバック情報を算出する段階を有する請求項1または2に記載の方法。 - 第1の偏波性を有する第1セットのアンテナと、前記第1の偏波性と直交する第2の偏波性を有する第2セットのアンテナとを有するアンテナアレイから複数の通信チャネルを介して多重入出力(MIMO)信号を受信する受信機と、
前記第1セットまたは前記第2セット内のアンテナ間の第1の相互関係に関する第1のフィードバック情報を算出し、前記第1セットのアンテナと前記第2セットのアンテナとの間の第2の相互関係に少なくとも関する第2のフィードバック情報を算出するプロセッサーと、
前記第1のフィードバック情報を第1の時間/周波数粒度で送信し、前記第2のフィードバック情報を前記第1の時間/周波数粒度より細かい第2の時間/周波数粒度で送信する送信機と
を備える装置。 - 前記プロセッサーは、前記第1の相互関係に基づく第1の行列と前記第2の相互関係に基づく第2の行列とのクロネッカー積として表されるフィードバック行列を算出することにより、前記第1のフィードバック情報および前記第2のフィードバック情報を算出する請求項10に記載の装置。
- 前記送信機は、前記第1の行列を前記第1の時間/周波数粒度で報告し、前記第2の行列を前記第2の時間/周波数粒度で報告する請求項11に記載の装置。
- 前記プロセッサーは、空間相関関数(SCF)行列の要素を推定することにより、前記フィードバック行列を算出する請求項11に記載の装置。
- 前記プロセッサーは、前記MIMO信号の後続の送信に適用されるプリコーディング行列を選択することにより、前記フィードバック行列を算出する請求項11に記載の装置。
- 前記プロセッサーは、所定セットのプリコーディング行列から前記プリコーディング行列を選択し、前記所定セットのプリコーディング行列のうち少なくともいくつかは、それぞれ、前記第1の相互関係の基づく第1の行列と前記第2の相互関係に基づく第2の行列とのクロネッカー積として表される請求項14に記載の装置。
- 前記送信機は、前記第2のフィードバック情報だけを送信し、前記第1のフィードバック情報を送信しない請求項10または11に記載の装置。
- 前記プロセッサーは、前記第1セットのアンテナのうち1つ以上と前記第2セットのアンテナのうち1つ以上とに基づく少なくとも1つの追加的フィードバック・パラメーターに基づいて前記第2のフィードバック情報を算出する請求項10または11に記載の装置。
- 請求項10に記載の装置を備える移動体通信端末。
- 請求項10に記載の装置を備える移動体通信端末において信号を処理するチップセット。
- 第1の偏波性を有する第1セットのアンテナと、前記第1の偏波性に直交する第2の偏波性を有する第2セットのアンテナとを有するアンテナアレイと、
前記アンテナアレイを使用して、複数の通信チャネルを介して多重入出力(MIMO)信号を送信する送信機と、
前記第1セットまたは前記第2セット内のアンテナ間の第1の相互関係に関する第1のフィードバック情報を第1の時間/周波数粒度で受信し、前記第1セットのアンテナと前記第2セットのアンテナとの間の第2の相互関係に少なくとも関する第2のフィードバック情報を、前記第1の時間/周波数粒度より細かい第2の時間/周波数粒度で受信する受信機と、
前記第1の時間/周波数粒度および前記第2の時間/周波数粒度でそれぞれ受信された前記第1のフィードバック情報および前記第2のフィードバック情報を組み合わせ、組み合わせた前記第1のフィードバック情報および前記第2のフィードバック情報に基づいて前記MIMO信号の送信を調整するプロセッサーと
を備える装置。
Applications Claiming Priority (5)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US28765209P | 2009-12-17 | 2009-12-17 | |
US61/287,652 | 2009-12-17 | ||
US29400010P | 2010-01-11 | 2010-01-11 | |
US61/294,000 | 2010-01-11 | ||
PCT/IB2010/055763 WO2011073876A2 (en) | 2009-12-17 | 2010-12-12 | Mimo feedback schemes for cross-polarized antennas |
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JP2013514703A true JP2013514703A (ja) | 2013-04-25 |
JP5637486B2 JP5637486B2 (ja) | 2014-12-10 |
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US (1) | US8761289B2 (ja) |
EP (1) | EP2514181B1 (ja) |
JP (1) | JP5637486B2 (ja) |
CN (1) | CN102783120B (ja) |
WO (1) | WO2011073876A2 (ja) |
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US20110150052A1 (en) | 2011-06-23 |
US8761289B2 (en) | 2014-06-24 |
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