JP2009538578A - 送信ステアリング行列の導出およびフィードバック - Google Patents
送信ステアリング行列の導出およびフィードバック Download PDFInfo
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- JP2009538578A JP2009538578A JP2009512274A JP2009512274A JP2009538578A JP 2009538578 A JP2009538578 A JP 2009538578A JP 2009512274 A JP2009512274 A JP 2009512274A JP 2009512274 A JP2009512274 A JP 2009512274A JP 2009538578 A JP2009538578 A JP 2009538578A
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- 239000011159 matrix material Substances 0.000 title claims abstract description 275
- 238000009795 derivation Methods 0.000 title claims 3
- 230000009466 transformation Effects 0.000 claims abstract description 103
- 238000000034 method Methods 0.000 claims abstract description 40
- 230000005540 biological transmission Effects 0.000 claims abstract description 39
- 230000004044 response Effects 0.000 claims description 17
- 238000004364 calculation method Methods 0.000 claims description 11
- 230000015654 memory Effects 0.000 claims description 11
- 238000013139 quantization Methods 0.000 claims description 7
- 238000013461 design Methods 0.000 description 18
- 230000008569 process Effects 0.000 description 18
- 238000012545 processing Methods 0.000 description 16
- 238000000354 decomposition reaction Methods 0.000 description 15
- 238000012804 iterative process Methods 0.000 description 12
- 238000010586 diagram Methods 0.000 description 9
- 230000006870 function Effects 0.000 description 6
- 238000004891 communication Methods 0.000 description 5
- 238000001914 filtration Methods 0.000 description 5
- 238000005516 engineering process Methods 0.000 description 2
- 238000010408 sweeping Methods 0.000 description 2
- 241000760358 Enodes Species 0.000 description 1
- 238000009825 accumulation Methods 0.000 description 1
- 238000013459 approach Methods 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 230000000295 complement effect Effects 0.000 description 1
- 230000008878 coupling Effects 0.000 description 1
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Classifications
-
- 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
- H04B7/0417—Feedback systems
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q21/00—Antenna arrays or systems
-
- 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
- H04B7/0404—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas the mobile station comprising multiple antennas, e.g. to provide uplink diversity
-
- 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
-
- 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
- H04B7/0658—Feedback reduction
- H04B7/066—Combined feedback for a number of channels, e.g. over several subcarriers like in orthogonal frequency division multiplexing [OFDM]
-
- 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
- H04L1/0675—Space-time coding characterised by the signaling
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- Engineering & Computer Science (AREA)
- Computer Networks & Wireless Communication (AREA)
- Signal Processing (AREA)
- Physics & Mathematics (AREA)
- Mathematical Physics (AREA)
- Radio Transmission System (AREA)
- Mobile Radio Communication Systems (AREA)
- Steering Control In Accordance With Driving Conditions (AREA)
- Transmitters (AREA)
Abstract
Description
Rは、HのT×T相関行列であり、
Vは、その列がRの固有ベクトルであるT×Tユニタリ行列であり、
Λは、Rの固有値のT×T対角行列であり、
「H」は、共役転置を表す。
sは、S個の固有モードで送信されるS個のデータ記号を有するT×1ベクトルであり、
xは、T個の送信アンテナから送信されるT個の出力記号を有するT×1ベクトルである。
rは、R個の受信アンテナからのR個の受信記号を有するR×1ベクトルであり、
nは、R×1雑音ベクトルである。
Claims (39)
- 送信器から受信器への送信に使用される送信ステアリング行列を定義するパラメータのセットを決定し、前記送信ステアリング行列を導出するための前記送信器による使用のためにパラメータの前記セットを前記送信器に送信するように構成された少なくとも1つのプロセッサと、
前記少なくとも1つのプロセッサに結合されたメモリと
を備える装置。 - 前記少なくとも1つのプロセッサが、複数の変換行列に基づいて前記送信ステアリング行列を導出し、前記複数の変換行列に基づいてパラメータの前記セットを決定するように構成される請求項1に記載の装置。
- 前記少なくとも1つのプロセッサが、チャネル行列の非対角要素を0にするために、前記複数の変換行列を用いて、前記チャネル行列に対するヤコビ回転の複数の反復を実行するように構成される請求項2に記載の装置。
- 前記ヤコビ回転の反復ごとに、前記少なくとも1つのプロセッサが、前記チャネル行列に基づいて変換行列を導出し、前記変換行列に基づいて前記チャネル行列を更新し、前記変換行列に基づいて前記送信ステアリング行列を更新するように構成される請求項3に記載の装置。
- 前記ヤコビ回転の反復ごとに、前記少なくとも1つのプロセッサが、前記チャネル行列の部分行列を形成し、前記部分行列の固有ベクトルの中間行列を入手するために前記部分行列を分解し、前記中間行列に基づいて前記変換行列を形成するように構成される請求項4に記載の装置。
- 前記ヤコビ回転の反復ごとに、前記少なくとも1つのプロセッサが、前記チャネル行列の最大の非対角要素を識別し、前記最大の非対角要素の行および列インデックスに基づいて前記変換行列を導出するように構成される請求項4に記載の装置。
- 前記少なくとも1つのプロセッサが、前記ヤコビ回転の前記複数の反復について所定の順序で前記チャネル行列の要素を選択し、前記反復について選択された前記チャネル行列の要素に基づいて前記ヤコビ回転の反復ごとに前記変換行列を導出するように構成される請求項4に記載の装置。
- 前記少なくとも1つのプロセッサが、前記送信ステアリング行列を単位行列、別のサブキャリアの送信ステアリング行列、または前記ヤコビ回転の前記複数の反復の前の別の時間間隔の送信ステアリング行列に初期化するように構成される請求項4に記載の装置。
- 前記少なくとも1つのプロセッサが、チャネル応答推定値に基づいて前記チャネル応答を導出するように構成される請求項4に記載の装置。
- 前記少なくとも1つのプロセッサが、チャネル応答行列に関する相関行列を導出し、前記チャネル行列として前記相関行列を使用するように構成される請求項4に記載の装置。
- パラメータの前記セットが、前記変換行列のそれぞれの少なくとも1つの要素の少なくとも1つの角度を備える請求項2に記載の装置。
- 前記少なくとも1つのプロセッサが、均一の量子化を用いて各変換行列の前記少なくとも1つの角度を入手するように構成される請求項11に記載の装置。
- 前記少なくとも1つのプロセッサが、CORDIC計算からの不均一の量子化を用いて各変換行列の前記少なくとも1つの角度を入手するように構成される請求項11に記載の装置。
- パラメータの前記セットが、各変換行列の少なくとも1つの要素の少なくとも1つの値、各送信の前記少なくとも1つの要素の少なくとも1つのインデックス、各変換行列の形の表示、またはこれらの組合せを備える請求項2に記載の装置。
- 送信器から受信器への送信に使用される送信ステアリング行列を定義するパラメータのセットを決定することと、
前記送信ステアリング行列を導出するための前記送信器による使用のためにパラメータの前記セットを前記送信器に送信することと
を備える方法。 - パラメータの前記セットの前記決定することが、
複数の変換行列に基づいて前記送信ステアリング行列を導出することと、
前記複数の変換行列に基づいてパラメータの前記セットを決定することと、
を含む請求項15に記載の方法。 - 前記送信ステアリング行列の前記導出することが、
前記複数の変換行列を用いてチャネル行列に対するヤコビ回転の複数の反復を実行することと、
前記ヤコビ回転の反復ごとに
前記チャネル行列に基づいて変換行列を導出することと、
前記変換行列に基づいて前記チャネル行列を更新することと、
前記変換行列に基づいて前記送信ステアリング行列を更新することと、
を備える請求項16に記載の方法。 - 前記複数の変換行列に基づいてパラメータの前記セットの前記決定することが、
各変換行列の少なくとも1つの要素の少なくとも1つの角度を用いてパラメータの前記セットを形成すること
を備える請求項16に記載の方法。 - 送信器から受信器への送信に使用される送信ステアリング行列を定義するパラメータのセットを決定するための手段と、
前記送信ステアリング行列を導出するための前記送信器による使用のために前記送信器にパラメータの前記セットを送信するための手段と
を備える装置。 - パラメータの前記セットを決定するための前記手段が、
複数の変換行列に基づいて前記送信ステアリング行列を導出するための手段と、
前記複数の変換行列に基づいてパラメータの前記セットを決定するための手段と
を備える請求項19に記載の装置。 - 前記送信ステアリング行列を導出するための前記手段が、
前記複数の変換行列を用いてチャネル行列に対するヤコビ回転の複数の反復を実行するための手段と、
前記ヤコビ回転の反復ごとに、
前記チャネル行列に基づいて変換行列を導出し、
前記変換行列に基づいて前記チャネル行列を更新し、
前記変換行列に基づいて前記送信ステアリング行列を更新するための手段と、
を備える請求項20に記載の装置。 - 前記複数の変換行列に基づいてパラメータの前記セットを決定するための前記手段が、
各変換行列の少なくとも1つの要素の少なくとも1つの角度を用いてパラメータの前記セットを形成するための手段
を備える請求項20に記載の装置。 - 送信器から受信器への送信に使用される送信ステアリング行列を定義するパラメータのセットを決定する第1命令セットと、
前記送信ステアリング行列を導出するための前記送信器による使用のために前記送信器にパラメータの前記セットを送信する第2命令セットと、
を備える記憶された命令を含むそのプロセッサ可読媒体。 - 前記第1命令セットが、
複数の変換行列に基づいて前記送信ステアリング行列を導出する第3命令セットと、
前記複数の変換行列に基づいてパラメータの前記セットを決定する第4命令セットと
を備える請求項23に記載のプロセッサ可読媒体。 - 前記第4命令セットが、
各変換行列の少なくとも1つの要素の少なくとも1つの角度を用いてパラメータの前記セットを形成する第5命令セット
を備える請求項24に記載のプロセッサ可読媒体。 - 送信ステアリング行列を定義するパラメータのセットを受信し、パラメータの前記セットに基づいて前記送信ステアリング行列を導出し、送信器から受信器への送信に前記送信ステアリング行列を使用するように構成された少なくとも1つのプロセッサと、
前記少なくとも1つのプロセッサに結合されたメモリと、
を備える装置。 - 前記少なくとも1つのプロセッサが、前記送信ステアリング行列を初期化し、パラメータの前記セットに基づいて複数の変換行列を形成し、前記変換行列のそれぞれを用いて前記送信ステアリング行列を更新するように構成される請求項26に記載の装置。
- 前記少なくとも1つのプロセッサが、パラメータの前記セットから各変換行列の少なくとも1つの要素の少なくとも1つの角度を入手し、前記変換行列の前記少なくとも1つの角度に基づいて各変換行列を形成するように構成される請求項27に記載の装置。
- 前記少なくとも1つのプロセッサが、前記変換行列の前記少なくとも1つの角度に基づいてCORDIC計算を実行することによって各変換行列の前記少なくとも1つの要素を導出するように構成される請求項28に記載の装置。
- 前記少なくとも1つのプロセッサが、前記送信ステアリング行列を単位行列、別のサブキャリアの送信ステアリング行列、または別の時間間隔の送信ステアリング行列に初期化するように構成される請求項27に記載の装置。
- 送信ステアリング行列を定義するパラメータのセットを受信することと、
パラメータの前記セットに基づいて前記送信ステアリング行列を導出することと、
送信器から受信器への送信に前記送信ステアリング行列を使用することと、
を備える方法。 - 前記送信ステアリング行列の前記導出することが、
前記送信ステアリング行列を初期化することと、
パラメータの前記セットに基づいて複数の変換行列を形成することと、
前記変換行列のそれぞれを用いて前記送信ステアリング行列を更新することと、
を備える請求項31に記載の方法。 - 前記複数の変換行列の前記形成することが、
パラメータの前記セットから各変換行列の少なくとも1つの要素の少なくとも1つの角度を入手することと、
前記変換行列の前記少なくとも1つの角度に基づいて各変換行列を形成することと、
を備える請求項32に記載の方法。 - 送信ステアリング行列を定義するパラメータのセットを受信するための手段と、
パラメータの前記セットに基づいて前記送信ステアリング行列を導出するための手段と、
送信器から受信器への送信に前記送信ステアリング行列を使用するための手段と、
を備える装置。 - 前記送信ステアリング行列を導出するための前記手段が、
前記送信ステアリング行列を初期化するための手段と、
パラメータの前記セットに基づいて複数の変換行列を形成するための手段と、
前記変換行列のそれぞれを用いて前記送信ステアリング行列を更新するための手段と、
を備える請求項34に記載の装置。 - 前記複数の変換行列を形成するための前記手段が、
パラメータの前記セットから各変換行列の少なくとも1つの要素の少なくとも1つの角度を入手するための手段と、
前記変換行列の前記少なくとも1つの角度に基づいて各変換行列を形成するための手段と、
を備える請求項35に記載の装置。 - 送信ステアリング行列を定義するパラメータのセットを受信する第1命令セットと、
パラメータの前記セットに基づいて前記送信ステアリング行列を導出する第2命令セットと、
送信器から受信器への送信に前記送信ステアリング行列を使用する第3命令セットと、
を備える記憶された命令を含むそのプロセッサ可読媒体。 - 前記第2命令セットが、
前記送信ステアリング行列を初期化する第4命令セットと、
パラメータの前記セットに基づいて複数の変換行列を形成する第5命令セットと、
前記変換行列のそれぞれを用いて前記送信ステアリング行列を更新する第6命令セットと、
を備える請求項37に記載のプロセッサ可読媒体。 - 前記第5命令セットが、
パラメータの前記セットから各変換行列の少なくとも1つの要素の少なくとも1つの角度を入手する第7命令セットと、
前記変換行列の前記少なくとも1つの角度に基づいて各変換行列を形成する第8命令セットと、
を備える請求項38に記載のプロセッサ可読媒体。
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US80268206P | 2006-05-22 | 2006-05-22 | |
US60/802,682 | 2006-05-22 | ||
PCT/US2007/069498 WO2007137280A2 (en) | 2006-05-22 | 2007-05-22 | Derivation and feedback of a transmit steering matrix |
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JP2009538578A true JP2009538578A (ja) | 2009-11-05 |
JP5096463B2 JP5096463B2 (ja) | 2012-12-12 |
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US (1) | US8290089B2 (ja) |
EP (1) | EP2020112B1 (ja) |
JP (1) | JP5096463B2 (ja) |
KR (1) | KR101162811B1 (ja) |
CN (1) | CN101449504B (ja) |
BR (1) | BRPI0711887A2 (ja) |
CA (1) | CA2650430C (ja) |
RU (1) | RU2425448C2 (ja) |
WO (1) | WO2007137280A2 (ja) |
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Also Published As
Publication number | Publication date |
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KR20090018138A (ko) | 2009-02-19 |
US20070268181A1 (en) | 2007-11-22 |
CN101449504B (zh) | 2013-05-29 |
CN101449504A (zh) | 2009-06-03 |
RU2425448C2 (ru) | 2011-07-27 |
EP2020112B1 (en) | 2013-06-05 |
KR101162811B1 (ko) | 2012-07-09 |
CA2650430A1 (en) | 2007-11-29 |
WO2007137280A3 (en) | 2008-04-17 |
WO2007137280A2 (en) | 2007-11-29 |
US8290089B2 (en) | 2012-10-16 |
CA2650430C (en) | 2013-01-08 |
JP5096463B2 (ja) | 2012-12-12 |
BRPI0711887A2 (pt) | 2012-01-10 |
EP2020112A2 (en) | 2009-02-04 |
RU2008150480A (ru) | 2010-06-27 |
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