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AU2001223789A1 - Method of detecting pilot tones in a noisy signal - Google Patents

Method of detecting pilot tones in a noisy signal

Info

Publication number
AU2001223789A1
AU2001223789A1 AU2001223789A AU2378901A AU2001223789A1 AU 2001223789 A1 AU2001223789 A1 AU 2001223789A1 AU 2001223789 A AU2001223789 A AU 2001223789A AU 2378901 A AU2378901 A AU 2378901A AU 2001223789 A1 AU2001223789 A1 AU 2001223789A1
Authority
AU
Australia
Prior art keywords
pilot tone
pilot tones
dft
noisy signal
detecting pilot
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Abandoned
Application number
AU2001223789A
Inventor
Antti Pietilainen
Simo Tammela
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Soderlund Mikko
Nokia Inc
Original Assignee
MIKKO SODERLUND
Nokia Inc
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by MIKKO SODERLUND, Nokia Inc filed Critical MIKKO SODERLUND
Publication of AU2001223789A1 publication Critical patent/AU2001223789A1/en
Abandoned legal-status Critical Current

Links

Classifications

    • 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

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Monitoring And Testing Of Transmission In General (AREA)
  • Optical Communication System (AREA)
  • Measurement Of Mechanical Vibrations Or Ultrasonic Waves (AREA)
  • Stereo-Broadcasting Methods (AREA)
  • Control Of Amplification And Gain Control (AREA)
  • Testing Of Optical Devices Or Fibers (AREA)

Abstract

This invention relates to detecting a pilot tone in an optical fiber. In the method described in the invention, computational complexity is reduced significantly by almost completely removing the need to carry out multipli-cations. To calculate certain spectral components of DFT (Discrete Fourier Transform) only a few multiplications are required. The idea is that for de-tecting one pilot tone, it is adequate to calculate one spectral component of DFT if a specific ratio can be chosen between the pilot tone frequency and the sample rate of the receiver.
AU2001223789A 2000-12-20 2000-12-20 Method of detecting pilot tones in a noisy signal Abandoned AU2001223789A1 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PCT/FI2000/001120 WO2002051090A1 (en) 2000-12-20 2000-12-20 Method of detecting pilot tones in a noisy signal

Publications (1)

Publication Number Publication Date
AU2001223789A1 true AU2001223789A1 (en) 2002-07-01

Family

ID=8555887

Family Applications (1)

Application Number Title Priority Date Filing Date
AU2001223789A Abandoned AU2001223789A1 (en) 2000-12-20 2000-12-20 Method of detecting pilot tones in a noisy signal

Country Status (8)

Country Link
US (1) US7111030B2 (en)
EP (1) EP1344363B1 (en)
CN (1) CN1209897C (en)
AT (1) ATE361615T1 (en)
AU (1) AU2001223789A1 (en)
CA (1) CA2428395A1 (en)
DE (1) DE60034710T2 (en)
WO (1) WO2002051090A1 (en)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20050089334A1 (en) * 2003-10-03 2005-04-28 Zvi Regev Protocol independent managed optical system
DE102004005431A1 (en) * 2004-02-04 2005-08-25 Alexander Kalweit Optical data transfer device with audio- or analog-signals, has information communicated as superpositioning of sine-wave signals
JP2017026989A (en) * 2015-07-28 2017-02-02 富士通オプティカルコンポーネンツ株式会社 Optical transmitter, and control method of optical modulator

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR100342431B1 (en) * 2000-09-07 2002-07-03 윤덕용 A multi-wavelength locking method and locker for WDM system
US6771590B1 (en) * 1996-08-22 2004-08-03 Tellabs Operations, Inc. Communication system clock synchronization techniques
US6493395B1 (en) 1996-09-02 2002-12-10 Stmicroelectronics N.V. Multi-carrier transmission systems
JP3726857B2 (en) 1997-05-02 2005-12-14 ソニー株式会社 Receiving apparatus and receiving method
DE69838807T2 (en) * 1998-02-18 2008-10-30 Sony Deutschland Gmbh Mapping of multicarrier signals in GSM time slots
US6985548B1 (en) * 1999-02-03 2006-01-10 Conexant Systems, Inc. System and method for timing recovery in a discrete multi-tone system
US6940843B2 (en) * 2003-02-14 2005-09-06 Cisco Technology, Inc. Selecting an access point according to a measure of received signal quality

Also Published As

Publication number Publication date
CA2428395A1 (en) 2002-06-27
CN1209897C (en) 2005-07-06
DE60034710T2 (en) 2008-01-17
CN1461551A (en) 2003-12-10
ATE361615T1 (en) 2007-05-15
EP1344363B1 (en) 2007-05-02
DE60034710D1 (en) 2007-06-14
WO2002051090A1 (en) 2002-06-27
EP1344363A1 (en) 2003-09-17
US7111030B2 (en) 2006-09-19
US20040053577A1 (en) 2004-03-18

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