JP4933426B2 - 電気ネットワークによる信号伝送においてスペクトルのボイドを設ける方法 - Google Patents
電気ネットワークによる信号伝送においてスペクトルのボイドを設ける方法 Download PDFInfo
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- JP4933426B2 JP4933426B2 JP2007515971A JP2007515971A JP4933426B2 JP 4933426 B2 JP4933426 B2 JP 4933426B2 JP 2007515971 A JP2007515971 A JP 2007515971A JP 2007515971 A JP2007515971 A JP 2007515971A JP 4933426 B2 JP4933426 B2 JP 4933426B2
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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
- H04L25/03828—Arrangements for spectral shaping; Arrangements for providing signals with specified spectral properties
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B7/00—Radio transmission systems, i.e. using radiation field
- H04B7/24—Radio transmission systems, i.e. using radiation field for communication between two or more posts
- H04B7/26—Radio transmission systems, i.e. using radiation field for communication between two or more posts at least one of which is mobile
- H04B7/2621—Radio transmission systems, i.e. using radiation field for communication between two or more posts at least one of which is mobile using frequency division multiple access [FDMA]
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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
- H04L27/2626—Arrangements specific to the transmitter only
- H04L27/26265—Arrangements for sidelobes suppression specially adapted to multicarrier systems, e.g. spectral precoding
-
- 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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- Engineering & Computer Science (AREA)
- Computer Networks & Wireless Communication (AREA)
- Signal Processing (AREA)
- Physics & Mathematics (AREA)
- Spectroscopy & Molecular Physics (AREA)
- Power Engineering (AREA)
- Mobile Radio Communication Systems (AREA)
- Transmitters (AREA)
- Cable Transmission Systems, Equalization Of Radio And Reduction Of Echo (AREA)
Description
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Claims (7)
- 電気ネットワークによるOFDM信号伝送においてスペクトルのボイドを設ける方法であって、
前記ボイド内のOFDM信号キャリアおよび前記ボイドに隣接するOFDM信号キャリアのパワーの調整もしくは除去のいずれかの処理により、前記ボイド内のOFDM信号キャリアおよび前記ボイドに隣接するOFDM信号キャリアの二次ローブに起因するパワーを抑制するステップと、
前記信号を周波数領域から時間領域の信号へ変換する逆離散フーリエ変換(IDFT)を、前記IDFTが複素形式の場合には少なくとも1024ポイント数で、または、前記IDFTが実数形式の場合には少なくとも2048ポイント数で、適用するステップと、
循環的プレフィックスを付与するステップと、
前記時間領域の前記OFDM信号をウィンドウと乗算するステップと
を含み、
前記パワーを抑制するステップは、前記ウィンドウの形状を含む条件に基づいて、パワーが調整もしくは除去される前記ボイドに隣接するOFDM信号キャリアの数を決定し、かつ、決定した数の前記ボイドに隣接するOFDM信号キャリアのパワーを調整もしくは除去することを含む方法。 - 前記ウィンドウは、立ち上がりコサイン・ウィンドウである、請求項1に記載の方法。
- 前記立ち上がりコサイン・ウィンドウは、最大ロールオフ係数0.2を有する、請求項2に記載の方法。
- 前記ウィンドウは、少なくとも2048のサンプル数を有し、
前記サンプルは、送信器のデジタル−アナログ変換器(DAC)を通される、請求項1から3のいずれか一項に記載の方法。 - パワーが調整される前記ボイドに隣接する前記OFDM信号キャリアの数は、形成される前記スペクトルのボイドの位置、幅、および、深さに依存し、かつ、前記ウィンドウの形状に基づいて定められる請求項1から4のいずれか一項に記載の方法。
- 前記除去は、前記OFDM信号キャリアから選択されたキャリアにおいてパワーを伝送しないことにより行われる、請求項1から5のいずれか一項に記載の方法。
- 前記パワーを抑制することにより、前記ボイド内のOFDM信号キャリアおよび前記二次ローブの電力密度を前記ボイドに要求される電力密度よりも小さくする、請求項1から6のいずれか一項に記載の方法。
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
ES200401502A ES2246708B1 (es) | 2004-06-18 | 2004-06-18 | Procedimiento para la obtencion de huecos espectrales en la transmision de señales por la red electrica. |
ESP200401502 | 2004-06-18 | ||
PCT/ES2005/000315 WO2006000602A1 (es) | 2004-06-18 | 2005-06-02 | Procedimiento para la obtención de huecos espectrales en la transmisión de señales por la red eléctrica |
Publications (2)
Publication Number | Publication Date |
---|---|
JP2008503126A JP2008503126A (ja) | 2008-01-31 |
JP4933426B2 true JP4933426B2 (ja) | 2012-05-16 |
Family
ID=35480478
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP2007515971A Expired - Fee Related JP4933426B2 (ja) | 2004-06-18 | 2005-06-02 | 電気ネットワークによる信号伝送においてスペクトルのボイドを設ける方法 |
Country Status (14)
Country | Link |
---|---|
US (1) | US7483365B2 (ja) |
EP (1) | EP1758260B1 (ja) |
JP (1) | JP4933426B2 (ja) |
KR (1) | KR101123379B1 (ja) |
CN (2) | CN101015134A (ja) |
AU (1) | AU2005256670A1 (ja) |
BR (1) | BRPI0512262A (ja) |
CA (1) | CA2571028A1 (ja) |
EA (1) | EA009705B1 (ja) |
ES (1) | ES2246708B1 (ja) |
IL (1) | IL180116A (ja) |
MX (1) | MXPA06014776A (ja) |
TW (1) | TWI376110B (ja) |
WO (1) | WO2006000602A1 (ja) |
Families Citing this family (18)
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US8509158B2 (en) * | 2005-09-26 | 2013-08-13 | The Directv Group, Inc. | Reconfigurable notched spectrum for wireless data transmission |
JP5426883B2 (ja) * | 2006-03-07 | 2014-02-26 | コーニンクレッカ フィリップス エヌ ヴェ | Ofdmシステムにおけるトーンノッチングを用いる同期シーケンス |
CA2857801C (en) | 2006-10-26 | 2014-12-30 | Xyleco, Inc. | Methods of processing biomass comprising electron-beam radiation |
US8472576B2 (en) | 2008-06-06 | 2013-06-25 | Maxim Integrated Products, Inc. | Jammer canceller for power-line communication |
US8165172B2 (en) * | 2008-06-06 | 2012-04-24 | Maxim Integrated Products, Inc. | Robust wideband symbol and frame synchronizer for power-line communication |
US8284825B2 (en) * | 2008-06-06 | 2012-10-09 | Maxim Integrated Products, Inc. | Blind channel quality estimator |
US8315152B2 (en) | 2008-06-06 | 2012-11-20 | Maxim Integrated Products, Inc. | System and method for applying multi-tone OFDM based communications within a prescribed frequency range |
US8315341B2 (en) * | 2008-06-06 | 2012-11-20 | Maxim Integrated Products, Inc. | Soft repetition code combiner using channel state information |
US8276025B2 (en) * | 2008-06-06 | 2012-09-25 | Maxim Integrated Products, Inc. | Block interleaving scheme with configurable size to achieve time and frequency diversity |
US8139614B2 (en) * | 2008-06-06 | 2012-03-20 | Maxim Integrated Products, Inc. | Robust narrowband symbol and frame synchronizer for power-line communication |
US8149967B2 (en) * | 2008-06-06 | 2012-04-03 | Maxim Integrated Products, Inc. | Combined dual feed-forward and feedback analog and digital automatic gain control for broadband communication |
US10141984B2 (en) | 2008-07-14 | 2018-11-27 | Marvell World Trade Ltd. | Multi-band transmission system |
US8320233B2 (en) | 2009-06-12 | 2012-11-27 | Maxim Integrated Products, Inc. | Transmitter and method for applying multi-tone OFDM based communications within a lower frequency range |
US9131454B2 (en) | 2013-03-13 | 2015-09-08 | Qualcomm Incorporated | Compensating power spectral density for power levels |
US9865783B2 (en) | 2013-09-09 | 2018-01-09 | Luminus, Inc. | Distributed Bragg reflector on an aluminum package for an LED |
US9608696B2 (en) | 2013-10-11 | 2017-03-28 | Qualcomm Incorporated | Dynamic transmit power and signal shaping |
US9295010B2 (en) | 2013-10-11 | 2016-03-22 | Qualcomm Incorporated | Dynamic transmit power and signal shaping |
US10003489B2 (en) * | 2016-08-12 | 2018-06-19 | Qualcomm Incorporated | Communication device using a spectral shaped low peak-to-average power discrete Fourier transform waveform |
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US6035000A (en) * | 1996-04-19 | 2000-03-07 | Amati Communications Corporation | Mitigating radio frequency interference in multi-carrier transmission systems |
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2004
- 2004-06-18 ES ES200401502A patent/ES2246708B1/es not_active Expired - Fee Related
- 2004-09-09 US US10/937,199 patent/US7483365B2/en not_active Expired - Fee Related
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2005
- 2005-06-02 CN CNA2005800274922A patent/CN101015134A/zh active Pending
- 2005-06-02 EP EP05754015.5A patent/EP1758260B1/en active Active
- 2005-06-02 CN CN201110120332.XA patent/CN102185810B/zh active Active
- 2005-06-02 CA CA002571028A patent/CA2571028A1/en not_active Abandoned
- 2005-06-02 WO PCT/ES2005/000315 patent/WO2006000602A1/es active Application Filing
- 2005-06-02 KR KR1020067027381A patent/KR101123379B1/ko not_active IP Right Cessation
- 2005-06-02 BR BRPI0512262-7A patent/BRPI0512262A/pt not_active IP Right Cessation
- 2005-06-02 JP JP2007515971A patent/JP4933426B2/ja not_active Expired - Fee Related
- 2005-06-02 EA EA200602152A patent/EA009705B1/ru not_active IP Right Cessation
- 2005-06-02 AU AU2005256670A patent/AU2005256670A1/en not_active Abandoned
- 2005-06-02 MX MXPA06014776A patent/MXPA06014776A/es not_active Application Discontinuation
- 2005-06-17 TW TW094120347A patent/TWI376110B/zh not_active IP Right Cessation
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- 2006-12-17 IL IL180116A patent/IL180116A/en not_active IP Right Cessation
Also Published As
Publication number | Publication date |
---|---|
US7483365B2 (en) | 2009-01-27 |
MXPA06014776A (es) | 2007-02-16 |
AU2005256670A1 (en) | 2006-01-05 |
IL180116A0 (en) | 2007-06-03 |
US20050281238A1 (en) | 2005-12-22 |
EP1758260B1 (en) | 2018-09-12 |
TWI376110B (en) | 2012-11-01 |
CN102185810A (zh) | 2011-09-14 |
CN101015134A (zh) | 2007-08-08 |
JP2008503126A (ja) | 2008-01-31 |
ES2246708A1 (es) | 2006-02-16 |
KR101123379B1 (ko) | 2012-03-23 |
KR20070043725A (ko) | 2007-04-25 |
CA2571028A1 (en) | 2006-01-05 |
EP1758260A1 (en) | 2007-02-28 |
TW200623669A (en) | 2006-07-01 |
IL180116A (en) | 2011-06-30 |
EA009705B1 (ru) | 2008-02-28 |
WO2006000602A1 (es) | 2006-01-05 |
ES2246708B1 (es) | 2007-04-01 |
CN102185810B (zh) | 2014-12-31 |
EA200602152A1 (ru) | 2007-06-29 |
BRPI0512262A (pt) | 2008-02-26 |
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