JP2016197914A - 無線通信システムにおいてフィードバックを処理する方法および装置 - Google Patents
無線通信システムにおいてフィードバックを処理する方法および装置 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
- H04B7/04—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
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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
-
- 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
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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
- H04B7/0636—Feedback format
- H04B7/0639—Using selective indices, e.g. of a codebook, e.g. pre-distortion matrix index [PMI] or for beam 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
- H04B7/0636—Feedback format
- H04B7/0645—Variable feedback
- H04B7/065—Variable contents, e.g. long-term or short-short
-
- 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
- H04L1/0693—Partial feedback, e.g. partial channel state information [CSI]
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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
- H04L25/0202—Channel estimation
- H04L25/0204—Channel estimation of multiple channels
-
- 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
- H04L25/0202—Channel estimation
- H04L25/024—Channel estimation channel estimation algorithms
- H04L25/0242—Channel estimation channel estimation algorithms using matrix methods
- H04L25/0246—Channel estimation channel estimation algorithms using matrix methods with factorisation
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- Computer Networks & Wireless Communication (AREA)
- Signal Processing (AREA)
- Physics & Mathematics (AREA)
- Mathematical Physics (AREA)
- Power Engineering (AREA)
- Mobile Radio Communication Systems (AREA)
- Radio Transmission System (AREA)
- Cable Transmission Systems, Equalization Of Radio And Reduction Of Echo (AREA)
Abstract
Description
b[n]=sign(q[n]) 式(6)
測定q[n]は、受信電力を最大にする好適な方向に対する有効チャネルの測定である。Ω1[n]、およびΩ0[n]がそれぞれ、
Q(t)=Q(0)exp(tX)Y 式(8)、
ここでQ(0)およびQ(t)はそれぞれ、時間0およびtでのグラスマン多様体空間における点である。Xは、斜行対称マトリックスであり、次の形態に制約される:
WTRUは、ハードウェアおよび/またはソフトウェアにて実施され、カメラ、ビデオカメラ・モジュール、テレビ電話、スピーカーフォン、振動デバイス、スピーカー、マイクロホン、テレビ送受信機、ハンズフリー受話器、キーボード、ブルートゥース(Bluetooth(登録商標))モジュール、FM(Frequency Modulated:周波数変調された)無線ユニット、LCD(Liquid Crystal Display:液晶)表示ユニット、OLED(Organic Light−Emitting Diode:有機発光ダイオード)表示ユニット、デジタル音楽プレーヤー、メディア・プレーヤー、テレビゲーム・プレーヤー・モジュール、インターネット・ブラウザー、および/または任意のWLAN(Wireless Local Access Network:無線LAN)モジュールなどのモジュールと連動して使用することができる。
1.無線通信システムにおいてフィードバックを処理する方法。
SINR(Signal to Interference Noise Ratio:信号対干渉雑音比)、スループット、BER(Block Error Rate:ブロック誤り率)、フレーム誤り率、および/またはチャネル容量no内の何れかを含む、前の何れかの実施形態の方法。
Claims (1)
- 無線送受信ユニット(WTRU)において実施されるフィードバックを処理する方法であって、
プロセッサを介して、チャネル行列を推定するステップと、
候補プリコーディング行列のセットのための複数の有効チャネルを計算するステップであって、各それぞれの有効チャネルは、前記チャネル行列とそれぞれの候補プリコーディング行列との乗算に基づいて決定される、ステップと、
候補プリコーディング行列の前記セットからプリコーディング行列を選択するステップであって、候補プリコーディング行列の前記セットは、
を乗ぜられた離散フーリエ変換(DFT)行列を使用して構築されて、m=1,2,・・・,N−1、l=0,1,2,・・・,L−1、NおよびLは、サイズN×NのL DFT行列を生成するための設計パラメータである、ステップと、
差分プリコーディング行列またはデルタ行列を算出するステップと、
前記差分プリコーディング行列または前記デルタ行列を量子化するステップと、
フィードバックビットを生成するステップと、
送信機を介して、前記フィードバックビットを送信するステップと、
後続するフィードバック間隔の間、完全なプリコーディング行列更新の間で前記プリコーディング行列を更新するステップであって、前記フィードバック間隔は、ドップラーシフトに基づいて決定され、前記更新されたプリコーディング行列のステップサイズは、前記ドップラーシフトに従って適応的に調整される、ステップと
を含むことを特徴とする方法。
Applications Claiming Priority (6)
Application Number | Priority Date | Filing Date | Title |
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US86343206P | 2006-10-30 | 2006-10-30 | |
US60/863,432 | 2006-10-30 | ||
US86372006P | 2006-10-31 | 2006-10-31 | |
US60/863,720 | 2006-10-31 | ||
US87050306P | 2006-12-18 | 2006-12-18 | |
US60/870,503 | 2006-12-18 |
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JP2014190330A Division JP6019076B2 (ja) | 2006-10-30 | 2014-09-18 | 無線通信システムにおいてフィードバックを処理する方法および装置 |
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JP2016197914A true JP2016197914A (ja) | 2016-11-24 |
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JP2009535295A Pending JP2010508765A (ja) | 2006-10-30 | 2007-10-30 | 無線通信システムにおいてフィードバックを処理する方法および装置 |
JP2012134960A Expired - Fee Related JP5715091B2 (ja) | 2006-10-30 | 2012-06-14 | 無線通信システムにおいてフィードバックを処理する方法および装置 |
JP2014190330A Expired - Fee Related JP6019076B2 (ja) | 2006-10-30 | 2014-09-18 | 無線通信システムにおいてフィードバックを処理する方法および装置 |
JP2016150454A Pending JP2016197914A (ja) | 2006-10-30 | 2016-07-29 | 無線通信システムにおいてフィードバックを処理する方法および装置 |
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JP2009535295A Pending JP2010508765A (ja) | 2006-10-30 | 2007-10-30 | 無線通信システムにおいてフィードバックを処理する方法および装置 |
JP2012134960A Expired - Fee Related JP5715091B2 (ja) | 2006-10-30 | 2012-06-14 | 無線通信システムにおいてフィードバックを処理する方法および装置 |
JP2014190330A Expired - Fee Related JP6019076B2 (ja) | 2006-10-30 | 2014-09-18 | 無線通信システムにおいてフィードバックを処理する方法および装置 |
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US (3) | US8798212B2 (ja) |
EP (1) | EP2090012A2 (ja) |
JP (4) | JP2010508765A (ja) |
KR (4) | KR20090080571A (ja) |
CN (2) | CN104270181A (ja) |
AR (1) | AR063543A1 (ja) |
AU (1) | AU2007314377A1 (ja) |
BR (1) | BRPI0716288A2 (ja) |
CA (1) | CA2668247C (ja) |
HK (1) | HK1136413A1 (ja) |
IL (1) | IL198496A0 (ja) |
MX (1) | MX2009004654A (ja) |
MY (1) | MY152640A (ja) |
TW (2) | TWI470957B (ja) |
WO (1) | WO2008054737A2 (ja) |
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