ES2183370T3 - Metodo y aparato para la sicronizacion fina de frecuencias en sistemas de desmodulacion de portadoras multiples. - Google Patents

Metodo y aparato para la sicronizacion fina de frecuencias en sistemas de desmodulacion de portadoras multiples.

Info

Publication number
ES2183370T3
ES2183370T3 ES98924116T ES98924116T ES2183370T3 ES 2183370 T3 ES2183370 T3 ES 2183370T3 ES 98924116 T ES98924116 T ES 98924116T ES 98924116 T ES98924116 T ES 98924116T ES 2183370 T3 ES2183370 T3 ES 2183370T3
Authority
ES
Spain
Prior art keywords
carrier
sicronization
phase
fine frequency
frequency
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.)
Expired - Lifetime
Application number
ES98924116T
Other languages
English (en)
Inventor
Ernst Eberlein
Sabah Badri
Stefan Lipp
Stephan Buchholz
Albert Heuberger
Heinz Gerhauser
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.)
Fraunhofer Gesellschaft zur Foerderung der Angewandten Forschung eV
Original Assignee
Fraunhofer Gesellschaft zur Foerderung der Angewandten Forschung eV
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
Family has litigation
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Application filed by Fraunhofer Gesellschaft zur Foerderung der Angewandten Forschung eV filed Critical Fraunhofer Gesellschaft zur Foerderung der Angewandten Forschung eV
Application granted granted Critical
Publication of ES2183370T3 publication Critical patent/ES2183370T3/es
Anticipated expiration legal-status Critical
Expired - Lifetime 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
    • 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
    • H04L27/2655—Synchronisation arrangements
    • H04L27/2657—Carrier synchronisation
    • H04L27/266—Fine or fractional frequency offset determination and synchronisation
    • 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
    • H04L27/2655—Synchronisation arrangements
    • H04L27/2668—Details of algorithms
    • H04L27/2673—Details of algorithms characterised by synchronisation parameters
    • H04L27/2676—Blind, i.e. without using known symbols
    • H04L27/2679—Decision-aided

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Digital Transmission Methods That Use Modulated Carrier Waves (AREA)

Abstract

Un método para efectuar una sincronización fina de frecuencias que compense una desviación de la frecuencia portadora de la frecuencia de un oscilador en un sistema (130) de desmodulación de portadoras múltiples, del tipo capaz de llevar a cabo una descodificación de fase diferencial de señales moduladas en portadoras múltiples, comprendiendo dichas señales una pluralidad de símbolos (200), estando definido cada símbolo por diferencias de fase entre portadoras simultáneas (202) que tienen frecuencias distintas, comprendiendo dicho método los pasos de: a) determinar una diferencia de fase entre fases de la misma portadora en símbolos distintos; b) determinar un descentramiento de frecuencia eliminando las incertidumbres de desplazamiento de fase, relacionadas con la información transmitida, de dicha diferencia de fase haciendo uso de un dispositivo de decisión M-PSK; y c) realizar una corrección de realimentación de dicha frecuencia portadora basándose en dicho descentramiento de frecuencia determinado.
ES98924116T 1998-04-14 1998-04-14 Metodo y aparato para la sicronizacion fina de frecuencias en sistemas de desmodulacion de portadoras multiples. Expired - Lifetime ES2183370T3 (es)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PCT/EP1998/002184 WO1999053667A1 (en) 1998-04-14 1998-04-14 Method and apparatus for fine frequency synchronization in multi-carrier demodulation systems

Publications (1)

Publication Number Publication Date
ES2183370T3 true ES2183370T3 (es) 2003-03-16

Family

ID=8166940

Family Applications (1)

Application Number Title Priority Date Filing Date
ES98924116T Expired - Lifetime ES2183370T3 (es) 1998-04-14 1998-04-14 Metodo y aparato para la sicronizacion fina de frecuencias en sistemas de desmodulacion de portadoras multiples.

Country Status (18)

Country Link
US (1) US7061997B1 (es)
EP (1) EP1072138B1 (es)
JP (1) JP3429748B2 (es)
KR (1) KR100377257B1 (es)
CN (1) CN1120602C (es)
AP (1) AP1092A (es)
AT (1) ATE224119T1 (es)
AU (1) AU749394B2 (es)
BR (1) BR9815808B1 (es)
CA (1) CA2327785C (es)
DE (1) DE69807945T2 (es)
DK (1) DK1072138T3 (es)
EA (1) EA002748B1 (es)
ES (1) ES2183370T3 (es)
PT (1) PT1072138E (es)
TW (1) TW421947B (es)
WO (1) WO1999053667A1 (es)
ZA (1) ZA983646B (es)

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KR100891267B1 (ko) * 2007-01-11 2009-03-30 성균관대학교산학협력단 무선통신시스템을 위한 훈련 시퀀스
EP1993249B1 (de) * 2007-05-15 2016-11-09 Rohde & Schwarz GmbH & Co. KG Verfahren und Vorrichtung zur Ermittlung einer ganzzahligen Trägerfrequenzabweichung in einem OFDM-Übertragungssystem mittels Auswertung unterschiedlicher Modulationswertigkeiten verschiedener Subträgergruppen
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DE112011105986B4 (de) 2011-12-20 2024-04-25 Intel Corporation Ein orthogonaler Frequenzteilungs-Multiplex (OFDM)- Empfänger mit Phasenrauschminderung und reduzierter Latenz
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Also Published As

Publication number Publication date
AU749394B2 (en) 2002-06-27
BR9815808A (pt) 2001-12-11
PT1072138E (pt) 2003-01-31
CA2327785C (en) 2003-08-12
BR9815808B1 (pt) 2012-10-30
JP3429748B2 (ja) 2003-07-22
DK1072138T3 (da) 2002-12-16
ZA983646B (en) 1998-11-24
EA200001068A1 (ru) 2001-06-25
CA2327785A1 (en) 1999-10-21
US7061997B1 (en) 2006-06-13
KR20010042708A (ko) 2001-05-25
ATE224119T1 (de) 2002-09-15
AP1092A (en) 2002-08-12
CN1120602C (zh) 2003-09-03
AU7643298A (en) 1999-11-01
AP2000001927A0 (en) 2000-09-30
DE69807945T2 (de) 2003-06-05
CN1301447A (zh) 2001-06-27
JP2002511711A (ja) 2002-04-16
WO1999053667A1 (en) 1999-10-21
DE69807945D1 (de) 2002-10-17
EP1072138B1 (en) 2002-09-11
HK1036713A1 (en) 2002-01-11
KR100377257B1 (ko) 2003-03-26
EA002748B1 (ru) 2002-08-29
EP1072138A1 (en) 2001-01-31
TW421947B (en) 2001-02-11

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