JP4981253B2 - 無線通信システムのためのデータ検出および復調 - Google Patents
無線通信システムのためのデータ検出および復調 Download PDFInfo
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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
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
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- H04L27/00—Modulated-carrier systems
- H04L27/26—Systems using multi-frequency codes
- H04L27/2601—Multicarrier modulation systems
- H04L27/2602—Signal structure
- H04L27/261—Details of reference signals
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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
- H04B7/0848—Joint weighting
- H04B7/0854—Joint weighting using error minimizing algorithms, e.g. minimum mean squared error [MMSE], "cross-correlation" or matrix inversion
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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
- H04L1/0001—Systems modifying transmission characteristics according to link quality, e.g. power backoff
- H04L1/0015—Systems modifying transmission characteristics according to link quality, e.g. power backoff characterised by the adaptation strategy
- H04L1/0017—Systems modifying transmission characteristics according to link quality, e.g. power backoff characterised by the adaptation strategy where the mode-switching is based on Quality of Service requirement
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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
- H04L25/024—Channel estimation channel estimation algorithms
- H04L25/0242—Channel estimation channel estimation algorithms using matrix methods
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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
- H04L25/03—Shaping networks in transmitter or receiver, e.g. adaptive shaping networks
- H04L25/03006—Arrangements for removing intersymbol interference
- H04L25/03343—Arrangements at the transmitter end
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L27/00—Modulated-carrier systems
- H04L27/0012—Modulated-carrier systems arrangements for identifying the type of modulation
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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
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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
-
- 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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- 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
- H04B7/0667—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 delayed versions of same signal
- H04B7/0669—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 delayed versions of same signal using different channel coding between antennas
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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
- H04B7/0697—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 spatial multiplexing
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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
- H04L1/004—Arrangements for detecting or preventing errors in the information received by using forward error control
- H04L1/0056—Systems characterized by the type of code used
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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
- H04L1/004—Arrangements for detecting or preventing errors in the information received by using forward error control
- H04L1/0056—Systems characterized by the type of code used
- H04L1/0071—Use of interleaving
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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
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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
- H04L25/0226—Channel estimation using sounding signals sounding signals per se
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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
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W28/00—Network traffic management; Network resource management
- H04W28/16—Central resource management; Negotiation of resources or communication parameters, e.g. negotiating bandwidth or QoS [Quality of Service]
- H04W28/18—Negotiating wireless communication parameters
- H04W28/20—Negotiating bandwidth
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W52/00—Power management, e.g. Transmission Power Control [TPC] or power classes
- H04W52/04—Transmission power control [TPC]
- H04W52/38—TPC being performed in particular situations
- H04W52/50—TPC being performed in particular situations at the moment of starting communication in a multiple access environment
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- Engineering & Computer Science (AREA)
- Computer Networks & Wireless Communication (AREA)
- Signal Processing (AREA)
- Physics & Mathematics (AREA)
- Mathematical Physics (AREA)
- Power Engineering (AREA)
- Quality & Reliability (AREA)
- Radio Transmission System (AREA)
- Mobile Radio Communication Systems (AREA)
- Circuits Of Receivers In General (AREA)
Description
この出願は、この出願の譲受人に譲渡され、すべての目的に対してその全体を参照することによりここに組み込まれる、2002年10月25日に出願された、「MIMO WLANシステム」(MIMO WLAN System)というタイトルの米国仮出願シリアル番号60/421,309の利益を主張する。
この発明は一般に、データ通信に関し、特に、無線通信システムにおいて、データを検出し復調するための技術に関する。
・偽のアラーム−受信信号内の雑音が誤って検出を引き起こす。および
・不正確な復号−信号は検出を正確に引き起こすが、復号されたCH2メッセージは、不正確で検出されない誤差を含む。
Claims (13)
- 無線多重アクセス通信システムにおいて送信データを検出する方法において、
受信されたと仮定された送信データのための測定基準を決定することと、
複数のアンテナで受信されたサンプルに基づいて前記仮定された送信データのための閾値を決定することと、ここにおいて、前記閾値は、前記複数のアンテナの各々に関して決定された前記送信データのための閾値の合計に基づいて決定される、
前記測定基準を前記閾値と比較し、前記送信データが受信されたと見なされるか否かを示す出力を供給することと、
を備え、
前記閾値を決定することは、前記仮定された送信データに対して受信されたパイロットシンボルに基づいて前記閾値を決定することを備え、
前記パイロットシンボルは、前記パイロットシンボルに基づいて発生された波形が最小のピーク対平均変動を有するように選択される、方法。 - 前記閾値を決定することは、前記仮定された送信データに対して受信されたパイロットシンボルおよびデータシンボルに基づいて前記閾値を決定することを備えた、請求項1の方法。
- 前記測定基準を決定することは、前記仮定された送信データの信号エネルギに基づいて前記測定基準を決定することを備えた、請求項1の方法。
- 前記測定基準を決定することは、複数のアンテナのための複数の受信された信号に基づいて前記測定基準を決定することを備え、前記閾値を決定することは前記複数の受信された信号に基づいて前記閾値を決定することを備えた、請求項1の方法。
- 受信されたと仮定された前記送信データに関する受信されたデータシンボルを処理し送信されたデータシンボルの推定値である再変調されたシンボルを供給することをさらに備え、
比較することは、前記データシンボルと前記再変調された信号を処理し、前記送信データが受信されたと見なされるか否かを示す検出器出力を供給することを含む、請求項1の方法。 - 処理することは、
前記データシンボルを復調してリカバーされたシンボルを供給することと、
前記リカバーされたシンボルをデコードしてデコードされたデータを供給することと、および
前記デコードされたデータを再エンコードし再復調されたシンボルを供給することと、
を備えた請求項5の方法。 - 受信されたと仮定された送信データのための測定基準を決定する手段と、
複数のアンテナで受信されたサンプルに基づいて前記仮定された送信データのための閾値を決定する手段、ここにおいて、前記閾値は、前記複数のアンテナの各々に関して決定された前記送信データのための閾値の合計に基づいて決定される、
前記測定基準を前記閾値と比較し、前記送信データが受信されたとみなされたか否かを示す出力を供給する手段と、
を備え、
前記閾値は、前記仮定された送信データに関する受信されたパイロットシンボルに基づいて決定される、ここにおいて前記パイロットシンボルは前記パイロットシンボルに基づいて発生された波形が最小のピーク対平均変動を有するように選択される、無線多重アクセス通信システムにおける装置。 - 前記閾値は、前記仮定された送信データに関する受信されたデータシンボルに基づいてさらに決定される、請求項7の装置。
- 前記測定基準は、前記仮定された送信データの信号エネルギに関連する、請求項7の装置。
- 前記測定基準を決定する手段は、複数のアンテナに関する複数の受信された信号に基づいて前記測定基準を決定するように機能的に作用し、前記閾値を決定する手段は、前記複数の受信された信号に基づいて前記閾値を決定するように機能的に作用する、請求項7の装置。
- 受信されたと仮定された前記送信データのためのデータシンボルを処理し、送信されたデータシンボルの推定値である再変調されたシンボルを供給する手段をさらに備え、
前記比較する手段は、前記データシンボルおよび前記再変調されたシンボルを処理し、前記送信データが受信されたと見なされるか否かを示す検出器出力を供給する、請求項7の装置。 - 前記処理する手段は、
前記データシンボルを復調してリカバーされたシンボルを供給する手段と、
前記リカバーされたシンボルをデコードしてデコードされたデータを供給する手段と、
前記デコードされたデータを再エンコードして前記再変調されたシンボルを供給する手段と、
を備える、請求項11の装置。 - 請求項1の方法を実行するための命令を含むコンピュータ読み取り可能媒体。
Applications Claiming Priority (7)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US42130902P | 2002-10-25 | 2002-10-25 | |
US60/421,309 | 2002-10-25 | ||
US43262602P | 2002-12-10 | 2002-12-10 | |
US60/432,626 | 2002-12-10 | ||
US10/692,833 | 2003-10-23 | ||
US10/692,833 US8170513B2 (en) | 2002-10-25 | 2003-10-23 | Data detection and demodulation for wireless communication systems |
PCT/US2003/034568 WO2004038989A2 (en) | 2002-10-25 | 2003-10-24 | Data detection and demodulation for wireless communication systems |
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JP2010094016A Division JP5307070B2 (ja) | 2002-10-25 | 2010-04-15 | 無線通信システムのためのデータ検出および復調 |
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JP2006504342A JP2006504342A (ja) | 2006-02-02 |
JP2006504342A5 JP2006504342A5 (ja) | 2006-12-07 |
JP4981253B2 true JP4981253B2 (ja) | 2012-07-18 |
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JP2004547251A Expired - Lifetime JP4981253B2 (ja) | 2002-10-25 | 2003-10-24 | 無線通信システムのためのデータ検出および復調 |
JP2010094016A Expired - Lifetime JP5307070B2 (ja) | 2002-10-25 | 2010-04-15 | 無線通信システムのためのデータ検出および復調 |
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EP (2) | EP1556984A2 (ja) |
JP (2) | JP4981253B2 (ja) |
KR (1) | KR101035765B1 (ja) |
CN (2) | CN1708935B (ja) |
AU (2) | AU2003285112B2 (ja) |
BR (1) | BR0315664A (ja) |
CA (1) | CA2500849C (ja) |
IL (1) | IL202856A0 (ja) |
MX (1) | MXPA05004311A (ja) |
TW (1) | TWI341102B (ja) |
WO (1) | WO2004038989A2 (ja) |
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KR100325367B1 (ko) * | 2000-01-28 | 2002-03-04 | 박태진 | 직교 주파수 분할 다중 통신 시스템에서의 비트 오율 측정장치및 방법 |
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2003
- 2003-10-24 JP JP2004547251A patent/JP4981253B2/ja not_active Expired - Lifetime
- 2003-10-24 EP EP03779427A patent/EP1556984A2/en not_active Withdrawn
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Also Published As
Publication number | Publication date |
---|---|
EP2262149B1 (en) | 2018-08-29 |
CN102014100A (zh) | 2011-04-13 |
CN1708935B (zh) | 2011-06-22 |
KR101035765B1 (ko) | 2011-05-20 |
WO2004038989A2 (en) | 2004-05-06 |
CN1708935A (zh) | 2005-12-14 |
JP5307070B2 (ja) | 2013-10-02 |
BR0315664A (pt) | 2005-08-30 |
EP2262149A3 (en) | 2013-05-08 |
AU2003285112A1 (en) | 2004-05-13 |
EP1556984A2 (en) | 2005-07-27 |
WO2004038989A3 (en) | 2004-07-08 |
CA2500849A1 (en) | 2004-05-06 |
MXPA05004311A (es) | 2005-08-03 |
KR20050071576A (ko) | 2005-07-07 |
AU2009202681A1 (en) | 2009-08-06 |
AU2003285112B2 (en) | 2009-04-02 |
TWI341102B (en) | 2011-04-21 |
TW200501656A (en) | 2005-01-01 |
CN102014100B (zh) | 2013-03-06 |
EP2262149A2 (en) | 2010-12-15 |
JP2010213309A (ja) | 2010-09-24 |
IL202856A0 (en) | 2011-07-31 |
CA2500849C (en) | 2012-10-02 |
JP2006504342A (ja) | 2006-02-02 |
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