JP6249412B2 - 入力信号を分離する方法 - Google Patents
入力信号を分離する方法 Download PDFInfo
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- JP6249412B2 JP6249412B2 JP2014208713A JP2014208713A JP6249412B2 JP 6249412 B2 JP6249412 B2 JP 6249412B2 JP 2014208713 A JP2014208713 A JP 2014208713A JP 2014208713 A JP2014208713 A JP 2014208713A JP 6249412 B2 JP6249412 B2 JP 6249412B2
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- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03D—DEMODULATION OR TRANSFERENCE OF MODULATION FROM ONE CARRIER TO ANOTHER
- H03D3/00—Demodulation of angle-, frequency- or phase- modulated oscillations
- H03D3/001—Details of arrangements applicable to more than one type of frequency demodulator
- H03D3/002—Modifications of demodulators to reduce interference by undesired signals
-
- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03D—DEMODULATION OR TRANSFERENCE OF MODULATION FROM ONE CARRIER TO ANOTHER
- H03D5/00—Circuits for demodulating amplitude-modulated or angle-modulated oscillations at will
-
- 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
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- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Computer Networks & Wireless Communication (AREA)
- Signal Processing (AREA)
- Noise Elimination (AREA)
- Circuits Of Receivers In General (AREA)
Description
2成分信号の成分z1(n)及びz2(n)はそれぞれ、以下の式となるように、間隔N1及びN2の周期を有する。
TKED演算器260は、周波数/DC変換器として機能する。この演算器の出力270は、各成分のDC信号を含む。これらのDC信号は、入力正弦波信号210の振幅及び周波数の二乗に比例する。TKED演算器の離散時間表現は、以下の式となる。
強化型PASED230は、入力として多成分信号210を取り込む。θ=[K,N1,...,NK]が、推定される信号パラメーター221を示すものとする。ここで、Kは、複合信号内の成分の数であり、Niは、i=1,2,...,Kについての第i成分の周期である。DDF220は、これらのパラメーターを推定するのに用いられる。
Claims (8)
- 入力信号を分離する方法であって、前記入力信号は多成分信号であり、該方法は、
前記入力信号のパラメーターを推定するステップと、
周期性に基づく代数的分離及びエネルギーに基づく復調(PASED)を用いて、前記パラメーター及び制約に従って前記入力信号を成分に分離するステップと、
各前記成分の直流(DC)信号と前記分離するステップで用いる各前記成分の前記制約とを得るために、ティーガーカイザーエネルギー検出器(TKED)を各前記成分に適用するステップと
を含み、
前記ステップはプロセッサが実行する
入力信号を分離する方法。 - 前記多成分信号は、振幅周波数変調された信号(AM−FM)及び正弦波信号の混合信号である、請求項1に記載の方法。
- 前記多成分信号の周波数及び振幅は、経時的に変化する、請求項1に記載の方法。
- 前記制約は、厳密なゼロDC制約を形成する、請求項1に記載の方法。
- 前記分離するステップ及び前記適用するステップは、終了条件に達するまで、反復して実行される、請求項1に記載の方法。
- 前記入力信号の長さは、該信号の基本周期の整数倍ではない、請求項1に記載の方法。
- 前記パラメーターは、前記成分の個数及び各前記成分の周期を含む、請求項1に記載の方法。
- 前記DC信号は、前記入力信号の振幅及び周波数の二乗に比例する、請求項1に記載の方法。
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US14/060,733 US9190955B2 (en) | 2013-10-23 | 2013-10-23 | Method for separating multi-component signals |
US14/060,733 | 2013-10-23 |
Publications (2)
Publication Number | Publication Date |
---|---|
JP2015082840A JP2015082840A (ja) | 2015-04-27 |
JP6249412B2 true JP6249412B2 (ja) | 2017-12-20 |
Family
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Application Number | Title | Priority Date | Filing Date |
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JP2014208713A Expired - Fee Related JP6249412B2 (ja) | 2013-10-23 | 2014-10-10 | 入力信号を分離する方法 |
Country Status (3)
Country | Link |
---|---|
US (1) | US9190955B2 (ja) |
JP (1) | JP6249412B2 (ja) |
DE (1) | DE102014220957A1 (ja) |
Families Citing this family (2)
Publication number | Priority date | Publication date | Assignee | Title |
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EP3580815A4 (en) | 2017-02-10 | 2021-06-02 | Ctwists, LLC | DEVICE AND METHOD FOR GENERATING AND DETECTING A TRANSMISSION SHAFT AND DEVICE AND METHOD FOR SENDING AND RECEIVING DIGITAL INFORMATION |
KR101935991B1 (ko) * | 2017-02-14 | 2019-01-07 | 국방과학연구소 | 단일 수신기의 고정밀 주파수 추정 장치 및 그 방법 |
Family Cites Families (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH07107506A (ja) * | 1993-09-30 | 1995-04-21 | Toshiba Corp | デジタル化処理回路 |
JP3110945B2 (ja) * | 1994-06-30 | 2000-11-20 | 三菱電機株式会社 | ディジタル復調装置 |
EP1395065B1 (en) * | 2002-08-28 | 2007-01-24 | Freescale Semiconductor, Inc. | Tone detector and method therefor |
US8098720B2 (en) * | 2006-10-06 | 2012-01-17 | Stmicroelectronics S.R.L. | Method and apparatus for suppressing adjacent channel interference and multipath propagation signals and radio receiver using said apparatus |
US20090221256A1 (en) * | 2008-02-28 | 2009-09-03 | Zafer Sahinoglu | Method and Apparatus for Filtering Narrow band Interference in a Pulsed Radio Signal |
US8515201B1 (en) * | 2008-09-18 | 2013-08-20 | Stc.Unm | System and methods of amplitude-modulation frequency-modulation (AM-FM) demodulation for image and video processing |
-
2013
- 2013-10-23 US US14/060,733 patent/US9190955B2/en not_active Expired - Fee Related
-
2014
- 2014-10-10 JP JP2014208713A patent/JP6249412B2/ja not_active Expired - Fee Related
- 2014-10-16 DE DE201410220957 patent/DE102014220957A1/de not_active Withdrawn
Also Published As
Publication number | Publication date |
---|---|
US20150109053A1 (en) | 2015-04-23 |
US9190955B2 (en) | 2015-11-17 |
JP2015082840A (ja) | 2015-04-27 |
DE102014220957A1 (de) | 2015-04-23 |
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