JPWO2006077933A1 - 無線通信装置及び無線通信方法 - Google Patents
無線通信装置及び無線通信方法 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
- H04L1/0001—Systems modifying transmission characteristics according to link quality, e.g. power backoff
- H04L1/0002—Systems modifying transmission characteristics according to link quality, e.g. power backoff by adapting the transmission rate
- H04L1/0003—Systems modifying transmission characteristics according to link quality, e.g. power backoff by adapting the transmission rate by switching between different modulation schemes
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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
- H04L1/0009—Systems modifying transmission characteristics according to link quality, e.g. power backoff by adapting the channel coding
-
- 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
- H04L1/0019—Systems modifying transmission characteristics according to link quality, e.g. power backoff characterised by the adaptation strategy in which mode-switching is based on a statistical approach
- H04L1/0021—Systems modifying transmission characteristics according to link quality, e.g. power backoff characterised by the adaptation strategy in which mode-switching is based on a statistical approach in which the algorithm uses adaptive thresholds
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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
- 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
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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
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L27/00—Modulated-carrier systems
- H04L27/32—Carrier systems characterised by combinations of two or more of the types covered by groups H04L27/02, H04L27/10, H04L27/18 or H04L27/26
- H04L27/34—Amplitude- and phase-modulated carrier systems, e.g. quadrature-amplitude modulated carrier systems
- H04L27/3405—Modifications of the signal space to increase the efficiency of transmission, e.g. reduction of the bit error rate, bandwidth, or average power
- H04L27/3444—Modifications of the signal space to increase the efficiency of transmission, e.g. reduction of the bit error rate, bandwidth, or average power by applying a certain rotation to regular constellations
-
- 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
- H04L5/003—Arrangements for allocating sub-channels of the transmission path
- H04L5/0044—Arrangements for allocating sub-channels of the transmission path allocation of payload
- H04L5/0046—Determination of how many bits are transmitted on different sub-channels
-
- 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
- H04L1/0023—Systems modifying transmission characteristics according to link quality, e.g. power backoff characterised by the signalling
- H04L1/0026—Transmission of channel quality indication
-
- 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
- H04L5/0001—Arrangements for dividing the transmission path
- H04L5/0003—Two-dimensional division
- H04L5/0005—Time-frequency
- H04L5/0007—Time-frequency the frequencies being orthogonal, e.g. OFDM(A), DMT
-
- 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
- H04L5/003—Arrangements for allocating sub-channels of the transmission path
- H04L5/0058—Allocation criteria
- H04L5/006—Quality of the received signal, e.g. BER, SNR, water filling
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02D—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN INFORMATION AND COMMUNICATION TECHNOLOGIES [ICT], I.E. INFORMATION AND COMMUNICATION TECHNOLOGIES AIMING AT THE REDUCTION OF THEIR OWN ENERGY USE
- Y02D30/00—Reducing energy consumption in communication networks
- Y02D30/50—Reducing energy consumption in communication networks in wire-line communication networks, e.g. low power modes or reduced link rate
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- Engineering & Computer Science (AREA)
- Signal Processing (AREA)
- Computer Networks & Wireless Communication (AREA)
- Quality & Reliability (AREA)
- Artificial Intelligence (AREA)
- Physics & Mathematics (AREA)
- Probability & Statistics with Applications (AREA)
- Radio Transmission System (AREA)
- Mobile Radio Communication Systems (AREA)
- Detection And Prevention Of Errors In Transmission (AREA)
Abstract
Description
3GPP TSG RAN WG1 #31 R1−030156"Modulation diversity for OFDM"
3GPP TSG RAN WG1 #31 R1-030156 "Modulation diversity for OFDM"
伝搬路環境に最適の変調方式が選択されて送信信号の伝送速度が最も速くなるとともに、受信側の無線通信装置における誤り訂正能力の低下を効果的に抑制することができる。
に向けて無線送信する。
Claims (9)
- 送信データを誤り訂正符号化する符号化手段と、
誤り訂正符号化された送信データを所定の方式で変調して変調信号を生成する変調手段と、
生成した変調信号からモジュレーションダイバーシチ変調信号を生成するモジュレーションダイバーシチ変調手段と、
前記変調信号又は前記モジュレーションダイバーシチ変調信号のいずれか一方から送信信号を生成し、生成した送信信号を無線送信する送信手段と、
無線送信された前記送信信号の伝搬路環境に応じて、前記送信手段において前記送信信号が前記変調信号又は前記モジュレーションダイバーシチ変調信号のどちらから生成されるか決定する決定手段と、
を具備する無線通信装置。 - 前記決定手段は、無線送信された前記送信信号の伝搬路環境に応じて、前記変調手段において前記送信データを変調する変調方式と、前記送信手段において前記送信信号が前記変調信号又は前記モジュレーションダイバーシチ変調信号のどちらから生成されるかと、を決定する、
請求項1記載の無線通信装置。 - 前記決定手段は、
前記送信信号についての受信品質が第1閾値未満のときには、前記変調手段において前記送信データがBPSKで変調され、かつ、前記送信手段において前記送信信号が前記モジュレーションダイバーシチ変調信号から生成されることを決定する、
請求項2記載の無線通信装置。 - 前記決定手段は、
前記送信信号についての受信品質が第1閾値未満のときには、前記変調手段において前記送信データがBPSKで変調され、かつ、前記送信手段において前記送信信号が前記モジュレーションダイバーシチ変調信号から生成されることを決定し、
前記送信信号についての受信品質が第1閾値以上第2閾値未満のときには、前記変調手段において前記送信データがQPSKで変調され、かつ、前記送信手段において前記送信信号が前記変調信号から生成されることを決定し、
前記送信信号についての受信品質が第2閾値以上第3閾値未満のときには、前記変調手段において前記送信データがQPSKで変調され、かつ、前記送信手段において前記送信信号が前記モジュレーションダイバーシチ変調信号から生成されることを決定する、
請求項2記載の無線通信装置。 - 前記決定手段は、
前記送信信号についての受信品質が第1閾値未満のときには、前記変調手段において前記送信データがBPSKで変調され、かつ、前記送信手段において前記送信信号が前記モジュレーションダイバーシチ変調信号から生成されることを決定し、
前記送信信号についての受信品質が第1閾値以上第2閾値未満のときには、前記変調手段において前記送信データがQPSKで変調され、かつ、前記送信手段において前記送信信号が前記変調信号から生成されることを決定し、
前記送信信号についての受信品質が第2閾値以上第3閾値未満のときには、前記変調手段において前記送信データがQPSKで変調され、かつ、前記送信手段において前記送信信号が前記モジュレーションダイバーシチ変調信号から生成されることを決定し、
前記送信信号についての受信品質が第3閾値以上第4閾値未満のときには、前記変調手段において前記送信データが16QAMで変調され、かつ、前記送信手段において前記送信信号が前記変調信号から生成されることを決定し、
前記送信信号についての受信品質が第4閾値以上のときには、前記変調手段において前記送信データが16QAMで変調され、かつ、前記送信手段において前記送信信号が前記モジュレーションダイバーシチ変調信号から生成されることを決定する、
請求項2記載の無線通信装置。 - 無線送信された前記送信信号を受信した他の無線通信装置によって測定された前記送信信号についての受信品質と受信電力の変動情報とを含む無線信号を受信する受信手段、をさらに具備し、
前記決定手段は、
受信された前記送信信号についての受信電力の変動情報に基づいて、前記受信電力の変動を監視し、
前記受信電力の変動が大きくなったときには、前記第2閾値を高くし、一方で前記受信電力の変動が小さくなったときには、前記第2閾値を低くする、
請求項4記載の無線通信装置。 - 請求項1記載の無線通信装置を具備する通信端末装置。
- 請求項1記載の無線通信装置を具備する基地局装置。
- 送信データを誤り訂正符号化する符号化ステップと、
誤り訂正符号化された送信データを所定の方式で変調して変調信号を生成する変調ステップと、
生成した変調信号からモジュレーションダイバーシチ変調信号を生成するモジュレーションダイバーシチ変調ステップと、
前記変調信号又は前記モジュレーションダイバーシチ変調信号のいずれか一方から送信信号を生成し、生成した送信信号を無線送信する送信ステップと、
無線送信された前記送信信号の伝搬路環境に応じて、前記送信ステップにおいて前記送信信号が前記変調信号又は前記モジュレーションダイバーシチ変調信号のどちらから生成されるか決定する決定ステップと、
を具備する無線通信方法。
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JP2006553951A JP4841440B2 (ja) | 2005-01-21 | 2006-01-19 | 無線通信装置及び無線通信方法 |
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JP2006553951A JP4841440B2 (ja) | 2005-01-21 | 2006-01-19 | 無線通信装置及び無線通信方法 |
PCT/JP2006/300755 WO2006077933A1 (ja) | 2005-01-21 | 2006-01-19 | 無線通信装置及び無線通信方法 |
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JPWO2006077933A1 true JPWO2006077933A1 (ja) | 2008-06-19 |
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US (1) | US7738592B2 (ja) |
EP (1) | EP1830503B1 (ja) |
JP (1) | JP4841440B2 (ja) |
CN (1) | CN101107801B (ja) |
WO (1) | WO2006077933A1 (ja) |
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JP4641233B2 (ja) * | 2005-09-14 | 2011-03-02 | ルネサスエレクトロニクス株式会社 | 復調装置及び復調方法 |
US8072874B2 (en) * | 2007-09-11 | 2011-12-06 | The Directv Group, Inc. | Method and system for switching to an engineering signal processing system from a production signal processing system |
JPWO2008093698A1 (ja) * | 2007-01-31 | 2010-05-20 | ソニー株式会社 | 情報処理装置および方法 |
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US9313457B2 (en) | 2007-09-11 | 2016-04-12 | The Directv Group, Inc. | Method and system for monitoring a receiving circuit module and controlling switching to a back-up receiving circuit module at a local collection facility from a remote facility |
US9756290B2 (en) * | 2007-09-11 | 2017-09-05 | The Directv Group, Inc. | Method and system for communicating between a local collection facility and a remote facility |
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CN106612156A (zh) * | 2015-10-26 | 2017-05-03 | 中国船舶重工集团公司第七二二研究所 | 数据帧无线传输方法及装置 |
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- 2006-01-19 JP JP2006553951A patent/JP4841440B2/ja not_active Expired - Fee Related
- 2006-01-19 US US11/814,125 patent/US7738592B2/en active Active
- 2006-01-19 WO PCT/JP2006/300755 patent/WO2006077933A1/ja active Application Filing
- 2006-01-19 CN CN2006800027934A patent/CN101107801B/zh not_active Expired - Fee Related
- 2006-01-19 EP EP06712001.4A patent/EP1830503B1/en not_active Not-in-force
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Publication number | Publication date |
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EP1830503A1 (en) | 2007-09-05 |
CN101107801A (zh) | 2008-01-16 |
US7738592B2 (en) | 2010-06-15 |
JP4841440B2 (ja) | 2011-12-21 |
EP1830503B1 (en) | 2015-12-30 |
WO2006077933A1 (ja) | 2006-07-27 |
US20090022241A1 (en) | 2009-01-22 |
EP1830503A4 (en) | 2013-07-31 |
CN101107801B (zh) | 2012-01-18 |
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