JP2012510243A - 変調トーン干渉の除去 - Google Patents
変調トーン干渉の除去 Download PDFInfo
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- JP2012510243A JP2012510243A JP2011538736A JP2011538736A JP2012510243A JP 2012510243 A JP2012510243 A JP 2012510243A JP 2011538736 A JP2011538736 A JP 2011538736A JP 2011538736 A JP2011538736 A JP 2011538736A JP 2012510243 A JP2012510243 A JP 2012510243A
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- phase
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- interference
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B1/00—Details of transmission systems, not covered by a single one of groups H04B3/00 - H04B13/00; Details of transmission systems not characterised by the medium used for transmission
- H04B1/69—Spread spectrum techniques
- H04B1/707—Spread spectrum techniques using direct sequence modulation
- H04B1/7097—Interference-related aspects
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B15/00—Suppression or limitation of noise or interference
- H04B15/02—Reducing interference from electric apparatus by means located at or near the interfering apparatus
- H04B15/04—Reducing interference from electric apparatus by means located at or near the interfering apparatus the interference being caused by substantially sinusoidal oscillations, e.g. in a receiver or in a tape-recorder
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B1/00—Details of transmission systems, not covered by a single one of groups H04B3/00 - H04B13/00; Details of transmission systems not characterised by the medium used for transmission
- H04B1/06—Receivers
- H04B1/10—Means associated with receiver for limiting or suppressing noise or interference
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B15/00—Suppression or limitation of noise or interference
- H04B15/02—Reducing interference from electric apparatus by means located at or near the interfering apparatus
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B2215/00—Reducing interference at the transmission system level
- H04B2215/064—Reduction of clock or synthesizer reference frequency harmonics
- H04B2215/067—Reduction of clock or synthesizer reference frequency harmonics by modulation dispersion
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- Engineering & Computer Science (AREA)
- Computer Networks & Wireless Communication (AREA)
- Signal Processing (AREA)
- Noise Elimination (AREA)
- Digital Transmission Methods That Use Modulated Carrier Waves (AREA)
Abstract
【選択図】図1A
Description
Claims (29)
- 周期的拡散信号と干渉高調波を変調する有効拡散信号との間の位相を特定する段階と、
前記干渉高調波の振幅を推定する段階と、
受信信号から前記干渉高調波を取り除く段階と
を備える方法。 - 前記位相を測定する段階は、前記周期的拡散信号の直接測定を利用して行われる請求項1に記載の方法。
- デジタル基準信号を生成する段階を更に備え、
前記位相を測定する段階は、生成された前記デジタル基準信号を使用して行われる請求項1に記載の方法。 - 平均二乗誤差を推定する段階を更に備え、
前記位相を測定する段階は、推定された前記平均二乗誤差を使用して行われる請求項1に記載の方法。 - 前記周期的拡散信号の形を特定する段階を更に備える請求項1に記載の方法。
- 前記干渉高調波の振幅を推定する段階は、前記位相を測定する段階とは別に実行される請求項1に記載の方法。
- 前記干渉高調波の振幅を推定する段階は、前記位相を測定する段階と一緒に実行される請求項1に記載の方法。
- 前記干渉高調波を取り除く段階は、減法除去技術、適応除去、適応フィルタリング及び時変狭帯域フィルタリングの少なくとも1つを使用して行われる請求項1に記載の方法。
- 前記干渉高調波を取り除く段階は、前記受信信号から、真の時変狭帯域干渉信号のみを取り除く請求項1に記載の方法。
- 周期的拡散信号と干渉高調波を変調する有効拡散信号との間の位相を測定する位相推定器と、
前記干渉高調波の振幅を推定する振幅推定器と、
受信信号から前記干渉高調波を取り除くトーン抑制器と
を備える装置。 - 前記位相推定器は、前記周期的拡散信号の直接測定を利用して、前記位相の測定を行う請求項10に記載の装置。
- 前記位相推定器は更に、デジタル基準信号を生成し、生成された前記デジタル基準信号を利用して前記位相の測定を行う請求項10に記載の装置。
- 前記位相推定器は更に、平均二乗誤差を推定し、推定した前記平均二乗誤差を使用して前記位相の測定を行う請求項10に記載の装置。
- 前記位相推定器は更に、前記周期的拡散信号の形を判断する請求項10に記載の装置。
- 前記振幅推定器は、前記位相推定器が前記位相を測定するのとは独立して、前記振幅を推定する請求項10に記載の装置。
- 前記振幅推定器は、前記位相推定器が前記位相を測定するのと一緒に、前記振幅を推定する請求項10に記載の装置。
- 前記振幅推定器は、適応フィルタである請求項10に記載の装置。
- 前記トーン抑制器は、減法除去技術、適応除去、適応フィルタリング及び時変狭帯域フィルタリングの少なくとも1つを使用する請求項10に記載の装置。
- 前記トーン抑制器は、前記受信信号から、真の時変狭帯域干渉信号のみを取り除く請求項10に記載の装置。
- コンピュータプラットフォームと、
前記コンピュータプラットフォームと連結され、無線周波数信号を送受信する無線装置と、
前記無線周波数信号と干渉する1以上のクロックの基本周波数における小さな偏差を追跡し、クロック高調波干渉を除去する又は減衰させる干渉抑制装置とを備えるシステムであって、
前記干渉抑制装置は、
周期的拡散信号と、干渉高調波を変調する有効拡散信号との間の位相を特定する位相推定器と
前記干渉高調波の振幅を推定する振幅推定器と、
受信信号から前記干渉高調波を取り除くトーン抑制器と
を有するシステム。 - 前記位相推定器は、前記周期的拡散信号の直接測定を利用して、前記位相の測定を行う請求項20に記載のシステム。
- 前記位相推定器は更に、デジタル基準信号を生成し、生成された前記デジタル基準信号を利用して前記位相の測定を行う請求項20に記載のシステム。
- 前記位相推定器は更に、平均二乗誤差を推定し、推定した前記平均二乗誤差を使用して前記位相の測定を行う請求項20に記載のシステム。
- 前記位相推定器は更に、前記周期的拡散信号の形を判断する請求項20に記載のシステム。
- 前記振幅推定器は、前記位相推定器が前記位相を測定するのとは独立して、前記振幅を推定する請求項20に記載のシステム。
- 前記振幅推定器は、前記位相推定器が前記位相を測定するのと一緒に、前記振幅を推定する請求項20に記載のシステム。
- 前記振幅推定器は、適応フィルタである請求項20に記載のシステム。
- 前記トーン抑制器は、減法除去技術、適応除去、適応フィルタリング及び時変狭帯域フィルタリングの少なくとも1つを使用する請求項20に記載のシステム。
- 前記トーン抑制器は、前記受信信号から、真の時変狭帯域干渉信号のみを取り除く請求項20に記載のシステム。
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US12/317,092 US9419677B2 (en) | 2008-12-19 | 2008-12-19 | Removal of modulated tonal interference |
US12/317,092 | 2008-12-19 | ||
PCT/US2009/066744 WO2010080265A2 (en) | 2008-12-19 | 2009-12-04 | Removal of modulated tonal interference |
Publications (2)
Publication Number | Publication Date |
---|---|
JP2012510243A true JP2012510243A (ja) | 2012-04-26 |
JP5352817B2 JP5352817B2 (ja) | 2013-11-27 |
Family
ID=42266029
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP2011538736A Expired - Fee Related JP5352817B2 (ja) | 2008-12-19 | 2009-12-04 | 方法、装置およびシステム |
Country Status (7)
Country | Link |
---|---|
US (1) | US9419677B2 (ja) |
JP (1) | JP5352817B2 (ja) |
CN (1) | CN102171938B (ja) |
DE (1) | DE112009002322T5 (ja) |
GB (1) | GB2477440B (ja) |
TW (1) | TWI420835B (ja) |
WO (1) | WO2010080265A2 (ja) |
Families Citing this family (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US8553817B1 (en) * | 2011-03-01 | 2013-10-08 | The United States Of America As Represented By The Secretary Of The Navy | Method and apparatus for shipboard co-site in-band desired signal extraction |
US9270326B2 (en) * | 2011-12-30 | 2016-02-23 | Intel Corporation | Adaptive clock spreading for platform RFI mitigation |
US9543994B1 (en) * | 2016-02-25 | 2017-01-10 | Trellisware Technologies, Inc. | Methods and systems for estimation and mitigation of swept-tone interferers |
US9749006B1 (en) * | 2016-02-25 | 2017-08-29 | Trellisware Technologies, Inc. | Estimation and mitigation of swept-tone interferers in frequency-hopped systems |
Citations (3)
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JPH10133767A (ja) * | 1996-10-31 | 1998-05-22 | Tohoku Ricoh Co Ltd | ディジタル電子機器とその故障診断及びクロストーク判別方法並びにディジタル電子機器システム |
JP2001160788A (ja) * | 1999-12-01 | 2001-06-12 | Fujitsu Ltd | 無線機能付き情報処理装置 |
JP2001339320A (ja) * | 2000-05-25 | 2001-12-07 | Sony Corp | 干渉波除去回路とデジタルテレビ受信機 |
Family Cites Families (15)
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US5410750A (en) | 1992-02-24 | 1995-04-25 | Raytheon Company | Interference suppressor for a radio receiver |
US5301363A (en) * | 1992-06-29 | 1994-04-05 | Corporate Computer Systems, Inc. | Method and apparatus for adaptive power adjustment of mixed modulation radio transmission |
GB9511551D0 (en) * | 1995-06-07 | 1995-08-02 | Discovision Ass | Signal processing system |
US6137888A (en) * | 1997-06-02 | 2000-10-24 | Nortel Networks Corporation | EM interference canceller in an audio amplifier |
US6052421A (en) * | 1998-09-28 | 2000-04-18 | Northrop Grumman Corporation | Method for separating a desired signal from an interfering signal |
US6647052B2 (en) * | 2001-12-26 | 2003-11-11 | Dell Products L.P. | Advanced spread spectrum clock generation technique for EMI reduction of multiple clock sources |
US7277475B1 (en) * | 2003-09-26 | 2007-10-02 | United States Of America As Represented By The Secretary Of The Navy | Narrowband interference excision device |
US7277457B2 (en) * | 2003-10-03 | 2007-10-02 | Motorola, Inc. | Sync bursts for frequency offset compensation |
US7349503B2 (en) | 2003-11-07 | 2008-03-25 | Atheros Communications, Inc. | Adaptive interference immunity control |
JPWO2006019196A1 (ja) * | 2004-08-20 | 2008-05-08 | 日本電気株式会社 | 電磁妨害低減量の計算方法、電磁妨害低減量計算装置、計算プログラム及び電子回路 |
US7279989B2 (en) | 2005-06-28 | 2007-10-09 | Intel Corporation | Apparatus, system and method capable of clock noise mitigation using a frequency adaptive process |
US7279979B2 (en) | 2005-09-12 | 2007-10-09 | Nokia Corporation | Method and arrangement for adjusting an output impedance of a power amplifier |
US7672407B2 (en) | 2006-06-27 | 2010-03-02 | Intel Corporation | Mitigation of interference from periodic noise |
US7761057B2 (en) | 2006-09-30 | 2010-07-20 | Intel Corporation | Managing system clocks to reduce RFI |
US20080137786A1 (en) * | 2006-12-08 | 2008-06-12 | Waltho Alan E | Adaptively modifying the even harmonic content of clock signals |
-
2008
- 2008-12-19 US US12/317,092 patent/US9419677B2/en active Active
-
2009
- 2009-12-04 JP JP2011538736A patent/JP5352817B2/ja not_active Expired - Fee Related
- 2009-12-04 DE DE112009002322T patent/DE112009002322T5/de not_active Ceased
- 2009-12-04 CN CN200980139238.XA patent/CN102171938B/zh not_active Expired - Fee Related
- 2009-12-04 WO PCT/US2009/066744 patent/WO2010080265A2/en active Application Filing
- 2009-12-04 GB GB1105361.8A patent/GB2477440B/en not_active Expired - Fee Related
- 2009-12-11 TW TW098142499A patent/TWI420835B/zh not_active IP Right Cessation
Patent Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH10133767A (ja) * | 1996-10-31 | 1998-05-22 | Tohoku Ricoh Co Ltd | ディジタル電子機器とその故障診断及びクロストーク判別方法並びにディジタル電子機器システム |
JP2001160788A (ja) * | 1999-12-01 | 2001-06-12 | Fujitsu Ltd | 無線機能付き情報処理装置 |
JP2001339320A (ja) * | 2000-05-25 | 2001-12-07 | Sony Corp | 干渉波除去回路とデジタルテレビ受信機 |
Also Published As
Publication number | Publication date |
---|---|
DE112009002322T5 (de) | 2012-02-09 |
CN102171938B (zh) | 2015-01-28 |
TW201042934A (en) | 2010-12-01 |
GB201105361D0 (en) | 2011-05-11 |
JP5352817B2 (ja) | 2013-11-27 |
WO2010080265A2 (en) | 2010-07-15 |
TWI420835B (zh) | 2013-12-21 |
GB2477440B (en) | 2014-11-05 |
US9419677B2 (en) | 2016-08-16 |
GB2477440A (en) | 2011-08-03 |
US20100158075A1 (en) | 2010-06-24 |
CN102171938A (zh) | 2011-08-31 |
WO2010080265A3 (en) | 2010-09-16 |
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