FR2967541B1 - METHOD AND DEVICE FOR DEMODULATING CARRIER RESIDUAL SIGNALS - Google Patents

METHOD AND DEVICE FOR DEMODULATING CARRIER RESIDUAL SIGNALS

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Publication number
FR2967541B1
FR2967541B1 FR1059454A FR1059454A FR2967541B1 FR 2967541 B1 FR2967541 B1 FR 2967541B1 FR 1059454 A FR1059454 A FR 1059454A FR 1059454 A FR1059454 A FR 1059454A FR 2967541 B1 FR2967541 B1 FR 2967541B1
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FR
France
Prior art keywords
carrier
signal
estimation
filter
demodulating
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.)
Active
Application number
FR1059454A
Other languages
French (fr)
Other versions
FR2967541A1 (en
Inventor
Jean-Pierre Millerioux
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.)
Centre National dEtudes Spatiales CNES
Original Assignee
Centre National dEtudes Spatiales CNES
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 Centre National dEtudes Spatiales CNES filed Critical Centre National dEtudes Spatiales CNES
Priority to FR1059454A priority Critical patent/FR2967541B1/en
Publication of FR2967541A1 publication Critical patent/FR2967541A1/en
Application granted granted Critical
Publication of FR2967541B1 publication Critical patent/FR2967541B1/en
Active legal-status Critical Current
Anticipated expiration legal-status Critical

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Classifications

    • 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
    • H04L25/0202—Channel estimation
    • H04L25/0212—Channel estimation of impulse response
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L27/00—Modulated-carrier systems
    • H04L27/18—Phase-modulated carrier systems, i.e. using phase-shift keying
    • H04L27/22—Demodulator circuits; Receiver circuits
    • H04L27/227—Demodulator circuits; Receiver circuits using coherent demodulation
    • H04L27/2271—Demodulator circuits; Receiver circuits using coherent demodulation wherein the carrier recovery circuit uses only the demodulated signals

Abstract

The method involves multiplying an oversampled digital signal with a carrier replica whose frequency is an estimation of instantaneous frequency of a carrier of the signal, by a mixer (12). The carrier is extracted from a carrier leak by a non-return-to-zero filter (14) synchronized on optimal sample. A channel is estimated by an averager (SIGMA) downstream of the filter. The instantaneous frequency estimation is calculated from the channel estimation by an estimator (24). Data are extracted by a biphase filter (16), and carrier phase is compensated with the channel estimation. Independent claims are also included for the following: (1) a demodulator for demodulating a signal (2) a computer program comprising a set of instructions for implementing a signal demodulating method.
FR1059454A 2010-11-17 2010-11-17 METHOD AND DEVICE FOR DEMODULATING CARRIER RESIDUAL SIGNALS Active FR2967541B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
FR1059454A FR2967541B1 (en) 2010-11-17 2010-11-17 METHOD AND DEVICE FOR DEMODULATING CARRIER RESIDUAL SIGNALS

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR1059454A FR2967541B1 (en) 2010-11-17 2010-11-17 METHOD AND DEVICE FOR DEMODULATING CARRIER RESIDUAL SIGNALS

Publications (2)

Publication Number Publication Date
FR2967541A1 FR2967541A1 (en) 2012-05-18
FR2967541B1 true FR2967541B1 (en) 2012-11-16

Family

ID=44175993

Family Applications (1)

Application Number Title Priority Date Filing Date
FR1059454A Active FR2967541B1 (en) 2010-11-17 2010-11-17 METHOD AND DEVICE FOR DEMODULATING CARRIER RESIDUAL SIGNALS

Country Status (1)

Country Link
FR (1) FR2967541B1 (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103499443B (en) * 2013-09-12 2016-01-20 西安交通大学 A kind of gear distress is without key phase angular domain average computation order analysis method

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7433298B1 (en) * 2002-08-19 2008-10-07 Marvell International Ltd. Compensation for residual frequency offset, phase noise and I/Q imbalance in OFDM modulated communications
WO2004079738A1 (en) * 2003-03-07 2004-09-16 Matsushita Electric Industrial Co., Ltd. Demodulator and address information extractor

Also Published As

Publication number Publication date
FR2967541A1 (en) 2012-05-18

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