JP2012178850A - Mimoビーム形成に基づくシングルキャリア周波数分割多元接続システム - Google Patents
Mimoビーム形成に基づくシングルキャリア周波数分割多元接続システム 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
- H04B7/04—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
- H04B7/06—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
- 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
- H04B7/08—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas at the receiving station
- H04B7/0837—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas at the receiving station using pre-detection combining
- H04B7/0842—Weighted combining
- H04B7/086—Weighted combining using weights depending on external parameters, e.g. direction of arrival [DOA], predetermined weights or beamforming
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- 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
- H04L25/0248—Eigen-space methods
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- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L27/00—Modulated-carrier systems
- H04L27/26—Systems using multi-frequency codes
- H04L27/2601—Multicarrier modulation systems
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L27/00—Modulated-carrier systems
- H04L27/26—Systems using multi-frequency codes
- H04L27/2601—Multicarrier modulation systems
- H04L27/2602—Signal structure
- H04L27/2605—Symbol extensions, e.g. Zero Tail, Unique Word [UW]
- H04L27/2607—Cyclic extensions
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L27/00—Modulated-carrier systems
- H04L27/26—Systems using multi-frequency codes
- H04L27/2601—Multicarrier modulation systems
- H04L27/2626—Arrangements specific to the transmitter only
- H04L27/2627—Modulators
- H04L27/2628—Inverse Fourier transform modulators, e.g. inverse fast Fourier transform [IFFT] or inverse discrete Fourier transform [IDFT] modulators
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L5/00—Arrangements affording multiple use of the transmission path
- H04L5/02—Channels characterised by the type of signal
- H04L5/023—Multiplexing of multicarrier modulation signals
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L27/00—Modulated-carrier systems
- H04L27/26—Systems using multi-frequency codes
- H04L27/2601—Multicarrier modulation systems
- H04L27/2614—Peak power aspects
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L27/00—Modulated-carrier systems
- H04L27/26—Systems using multi-frequency codes
- H04L27/2601—Multicarrier modulation systems
- H04L27/2647—Arrangements specific to the receiver only
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Abstract
【解決手段】送信機にて、送信データについて高速フーリエ変換(FFT)を行って、周波数領域データを発生する。周波数領域の送信データは、割り当てられたサブキャリアにマップされる。割り当てられたサブキャリアにマップされた送信データについて、逆高速フーリエ変換(IFFT)を行って、時間領域送信データを発生する。時間領域送信データは、アンテナを介して送信される。受信機にて、受信されたデータについてFFTを行って、周波数領域受信データを発生する。サブキャリアデマッピングを行って、割り当てられたサブキャリア上にマップされたデータを抽出する。チャンネル推定器がチャンネル行列を発生し、U、D、およびVH行列に分解される。送信および受信アンテナ間のチャンネル歪みおよび干渉は、抽出された周波数領域受信データに対して分解されたチャンネル行列に基づき等化される。
【選択図】図1
Description
1.通信のために複数のサブキャリアの一部が送信機および受信機に割り当てられたSC−FDMAシステム。
Claims (5)
- シングルキャリア周波数分割多元接続(SC−FDMA)システムにおける多入力多出力(MIMO)のための無線送受信ユニット(WTRU)であって、
送信用のデータについて高速フーリエ変換(FFT)を行って、周波数領域データを発生するよう構成された高速フーリエ変換(FFT)ユニットの第1の集合と、
ステアリング行列(V)の値を示すフィードバックを受信するよう構成された受信器であって、該ステアリング行列(V)は、チャネル行列(H)のエルミート転置と該チャネル行列(H)との積によって形成される行列の固有ベクトルを含む受信器と、
前記フィードバックされたステアリング行列(V)を前記周波数領域データに適用するよう構成されたビームフォーマと、
送信に対して割り当てられたサブキャリア上に前記周波数領域送信データをマップするよう構成された複数のサブキャリアマッピングユニットと、
割り当てられたサブキャリアにマップされた送信データについて逆高速フーリエ変換(IFFT)を行って、時間領域送信データを発生するよう構成されたIFFTユニットの第1の集合と、
前記時間領域送信データを送信するよう構成された複数の送信アンテナと
を備えたことを特徴とするWTRU。 - 前記ビームフォーマは、スケーリングファクタを適用することを特徴とする請求項1に記載のWTRU。
- 前記スケーリングファクタは、Hをチャネル行列、Uをユニタリ行列およびVHを前記フィードバックされた行列のエルミーと転置として、式H=UDVHを満足する逆対角行列(D)であることを特徴とする請求項2に記載のWTRU。
- 前記スケーリングファクタは、前記D行列および雑音分散に基づき発生されることを特徴とする請求項3に記載のWTRU。
- 前記送信器に割り当てられたサブキャリアは、局所化されたサブキャリアのブロックであることを特徴とする請求項1に記載のWTRU。
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US72202205P | 2005-09-29 | 2005-09-29 | |
US60/722,022 | 2005-09-29 |
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JP2012062762A Expired - Fee Related JP5432305B2 (ja) | 2005-09-29 | 2012-03-19 | Mimoビーム形成に基づくシングルキャリア周波数分割多元接続システム |
JP2012094911A Expired - Fee Related JP5432316B2 (ja) | 2005-09-29 | 2012-04-18 | Mimoビーム形成に基づくシングルキャリア周波数分割多元接続システム |
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JP2012062762A Expired - Fee Related JP5432305B2 (ja) | 2005-09-29 | 2012-03-19 | Mimoビーム形成に基づくシングルキャリア周波数分割多元接続システム |
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US (2) | US8553521B2 (ja) |
EP (2) | EP2088726B1 (ja) |
JP (3) | JP2009510918A (ja) |
KR (5) | KR101304785B1 (ja) |
CN (1) | CN101273599B (ja) |
AT (1) | ATE442727T1 (ja) |
AU (2) | AU2006297390B2 (ja) |
BR (1) | BRPI0617044A2 (ja) |
CA (1) | CA2623710C (ja) |
DE (1) | DE602006009127D1 (ja) |
DK (1) | DK1938543T3 (ja) |
ES (1) | ES2333050T3 (ja) |
HK (1) | HK1117681A1 (ja) |
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