JP4431578B2 - 複数の送信アンテナのofdmチャネル推定及びトラッキング - Google Patents
複数の送信アンテナのofdmチャネル推定及びトラッキング Download PDFInfo
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- JP4431578B2 JP4431578B2 JP2006524358A JP2006524358A JP4431578B2 JP 4431578 B2 JP4431578 B2 JP 4431578B2 JP 2006524358 A JP2006524358 A JP 2006524358A JP 2006524358 A JP2006524358 A JP 2006524358A JP 4431578 B2 JP4431578 B2 JP 4431578B2
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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
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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
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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
- H04L25/0224—Channel estimation using sounding signals
- H04L25/0228—Channel estimation using sounding signals with direct estimation from sounding signals
- H04L25/023—Channel estimation using sounding signals with direct estimation from sounding signals with extension to other symbols
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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]
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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
Description
Claims (15)
- 直交周波数分割多重(OFDM)を使用して、複数の送信アンテナ手段を備える送信機及び少なくとも一つの受信アンテナ手段を備える受信機により通信を行なう方法であって、該方法は、
ビット・ストリーム及び送信機から続いて送信されるOFDMシンボルとして変調される該当する一連のN個の周波数領域搬送波振幅
アフィックス情報を連続する時間領域OFDMシンボルの間のガード区間に挿入すること、
前記アフィックス情報を含む前記時間領域OFDMシンボルを前記送信機から前記受信機に送信すること、
前記アフィックス情報を前記受信機において使用して、前記送信機と前記受信機との間の伝送チャネルのチャネル・インパルス応答(l番目の送信アンテナとm番目の受信アンテナとの間の
該推定されたチャネル・インパルス応答(l番目の送信アンテナとm番目の受信アンテナとの間の
を備え、
前記アフィックス情報は、前記受信機だけでなく前記送信機にも認識され、かつ少なくとも第1の重み付け係数(αk)と第2の重み付け係数(w i (k))とが乗算された前記時間領域OFDMシンボルに共通のベクトル
前記送信機はN t 個の送信アンテナ手段を使用し、前記受信機はN r 個の受信アンテナ手段を使用し、M’個の連続する時間領域OFDMデータ・シンボルは、特定の時空間エンコーダ
- 請求項1に記載の通信方法において、前記第1の重み付け係数(αk)は擬似ランダム値を有する、通信方法。
- 請求項1又は2に記載の通信方法において、前記第1の重み付け係数(αk)は複素値を有する、通信方法。
- 請求項1〜3のうちのいずれか一項に記載の通信方法において、前記第1の重み付け係数(αk)は決定論的であり、かつ前記受信機と前記送信機との間の現在の通信に関係なく、前記受信機だけでなく前記送信機にも認識される、通信方法。
- 請求項1〜3のうちのいずれか一項に記載の通信方法において、前記第1の重み付け係数(αk)は前記送信機から前記受信機に通信される、通信方法。
- 請求項6に記載の通信方法において、前記送信アフィックスによって、前記受信機における前記ブロックSの送信ガード区間アフィックス情報の分離が可能となり、前記第2の重み付け係数(w i (k))によって、前記送信アンテナ手段と前記少なくとも一つの受信アンテナ手段との間の異なる物理チャネルの前記受信機での分離及び推定が可能になる、通信方法。
- 請求項1〜11のうちのいずれか一項に記載の通信方法において、前記第2の重み付け係数(w i (k))は、前記送信アンテナ手段の各々に関して異なる値を採って前記物理チャネルの区別を可能にする、通信方法。
- 請求項1〜13のうちのいずれか一項に記載の通信方法に使用する送信機であって、送信対象のOFDMシンボルとして変調される前記ビット・ストリームを生成し、かつ前記アフィックス情報を前記OFDMシンボルの間の前記ガード区間に挿入するための生成手段を備え、前記ガード区間アフィックス情報は決定論的であり、かつ前記受信機だけでなく前記送信機にも認識されるように適しており、更には、前記第1の重み付け係数(α k )と第2の重み付け係数(w i (k))とが乗算される前記時間領域OFDMシンボルに共通の前記ベクトル
- 請求項1〜12のうちのいずれか一項に記載の通信方法に使用する受信機であって、前記OFDMシンボルとして変調される前記ビット・ストリームを含む信号を受信する復調手段を備え、前記ガード区間アフィックス情報は前記OFDMシンボルの間に挿入され、前記復調手段は、前記ガード区間の前記アフィックス情報を使用して伝送チャネルのチャネル・インパルス応答を推定し、該推定されたチャネル・インパルス応答を使用して、前記受信機において受信する信号の前記ビット・ストリームを復調するように構成され、前記ガード区間アフィックス情報(w i (k)α k・ c 0 からw i (k)α k・ c D−1 )は決定論的であり、かつ前記受信機に認識される、受信機。
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
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EP03292120A EP1511210B1 (en) | 2003-08-28 | 2003-08-28 | OFDM channel estimation and tracking for multiple transmit antennas |
PCT/EP2004/051643 WO2005022815A1 (en) | 2003-08-28 | 2004-07-28 | Ofdm channel estimation and tracking for multiple transmit antenna |
Publications (2)
Publication Number | Publication Date |
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JP2007504690A JP2007504690A (ja) | 2007-03-01 |
JP4431578B2 true JP4431578B2 (ja) | 2010-03-17 |
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JP2006524358A Expired - Fee Related JP4431578B2 (ja) | 2003-08-28 | 2004-07-28 | 複数の送信アンテナのofdmチャネル推定及びトラッキング |
Country Status (7)
Country | Link |
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US (1) | US7539259B2 (ja) |
EP (1) | EP1511210B1 (ja) |
JP (1) | JP4431578B2 (ja) |
KR (1) | KR100799901B1 (ja) |
CN (1) | CN100553186C (ja) |
AT (1) | ATE533245T1 (ja) |
WO (1) | WO2005022815A1 (ja) |
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KR100504525B1 (ko) * | 1998-05-21 | 2005-09-26 | 엘지전자 주식회사 | 직교 주파수 분할 다중 시스템의 채널 상태 정보 발생 회로 |
KR100557877B1 (ko) * | 1999-04-16 | 2006-03-07 | 전남대학교산학협력단 | 채널 추정 장치 및 방법 그리고 그것을 이용한 직교 주파수 분할 다중 시스템 |
KR100429837B1 (ko) * | 1999-09-22 | 2004-05-03 | 삼성전자주식회사 | 직교주파수 분할 다중화 신호의 동기화 방법 및 그 장치 |
US7233625B2 (en) * | 2000-09-01 | 2007-06-19 | Nortel Networks Limited | Preamble design for multiple input—multiple output (MIMO), orthogonal frequency division multiplexing (OFDM) system |
SE0004403L (sv) * | 2000-11-29 | 2002-05-30 | Ericsson Telefon Ab L M | Metoder och anordningar i ett telekommunikationssystem |
US7072289B1 (en) * | 2001-06-01 | 2006-07-04 | Lin Yang | Pseudo-random sequence padding in an OFDM modulation system |
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2003
- 2003-08-28 AT AT03292120T patent/ATE533245T1/de active
- 2003-08-28 EP EP03292120A patent/EP1511210B1/en not_active Expired - Lifetime
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- 2004-07-28 JP JP2006524358A patent/JP4431578B2/ja not_active Expired - Fee Related
- 2004-07-28 KR KR1020067004165A patent/KR100799901B1/ko active IP Right Grant
- 2004-07-28 WO PCT/EP2004/051643 patent/WO2005022815A1/en active Application Filing
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JP2007504690A (ja) | 2007-03-01 |
KR20060087535A (ko) | 2006-08-02 |
CN100553186C (zh) | 2009-10-21 |
CN1846388A (zh) | 2006-10-11 |
KR100799901B1 (ko) | 2008-01-31 |
US20080043857A1 (en) | 2008-02-21 |
ATE533245T1 (de) | 2011-11-15 |
US7539259B2 (en) | 2009-05-26 |
EP1511210B1 (en) | 2011-11-09 |
EP1511210A1 (en) | 2005-03-02 |
WO2005022815A1 (en) | 2005-03-10 |
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