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WO1999029078A3 - Ameliorations de brouilleurs de donnees ou associees - Google Patents

Ameliorations de brouilleurs de donnees ou associees Download PDF

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Publication number
WO1999029078A3
WO1999029078A3 PCT/SE1998/002193 SE9802193W WO9929078A3 WO 1999029078 A3 WO1999029078 A3 WO 1999029078A3 SE 9802193 W SE9802193 W SE 9802193W WO 9929078 A3 WO9929078 A3 WO 9929078A3
Authority
WO
WIPO (PCT)
Prior art keywords
data
synchronisation
present
user data
pseudo
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.)
Ceased
Application number
PCT/SE1998/002193
Other languages
English (en)
Other versions
WO1999029078A2 (fr
Inventor
Tomas Nordstroem
Gunnar Bahlenberg
Daniel Bengtsson
Siwert Haakansson
Anders Isaksson
Mikael Isaksson
Magnus Johansson
Lis-Marie Ljunggren
Hans Lundberg
Sven-Rune Olofsson
Lennart Olsson
Tomas Stefansson
Hans Oehman
Goeran Oekvist
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.)
Telia Co AB
Original Assignee
Telia AB
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 Telia AB filed Critical Telia AB
Publication of WO1999029078A2 publication Critical patent/WO1999029078A2/fr
Publication of WO1999029078A3 publication Critical patent/WO1999029078A3/fr
Anticipated expiration legal-status Critical
Ceased 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
    • H04L27/2602—Signal structure
    • 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
    • H04L25/03—Shaping networks in transmitter or receiver, e.g. adaptive shaping networks
    • H04L25/03828—Arrangements for spectral shaping; Arrangements for providing signals with specified spectral properties
    • H04L25/03866—Arrangements for spectral shaping; Arrangements for providing signals with specified spectral properties using scrambling
    • 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
    • H04L27/2626—Arrangements specific to the transmitter only
    • 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)
  • Physics & Mathematics (AREA)
  • Spectroscopy & Molecular Physics (AREA)
  • Power Engineering (AREA)
  • Time-Division Multiplex Systems (AREA)
  • Synchronisation In Digital Transmission Systems (AREA)

Abstract

L'invention simplifie les brouilleurs de données existants en utilisant les trames de synchronisation servant normalement à mesurer les caractéristiques des canaux, comme source de données pseudo-aléatoires pouvant être combinées avec des données utilisateur entrantes. Elle s'applique en particulier aux systèmes de transmission à plusieurs porteuses utilisant le NPT (numérique à plusieurs tonalités) ou le MRFO (multiplexage par répartition en fréquences orthogonales). Beaucoup de ces systèmes de transmission émettent des données connues habituellement dites trames de synchronisation pour mesurer les caractéristiques de canaux telles que le rapport signal/bruit. Les données connues contenues dans une trame de synchronisation sont choisies de manière à présenter une distribution statistique adaptée, par exemple pseudo-aléatoire. Dans l'invention, les bits de données utilisateur sont combinés aux données connues de trame de synchronisation à l'aide d'une fonction OU exclusive. Il en résulte un brouillage statistiquement et informatiquement efficace des données utilisateur.
PCT/SE1998/002193 1997-12-03 1998-12-01 Ameliorations de brouilleurs de donnees ou associees Ceased WO1999029078A2 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
SE9704497-8 1997-12-03
SE9704497A SE9704497L (sv) 1997-12-03 1997-12-03 Förbättringar av, eller med avseende på, data scramblers

Publications (2)

Publication Number Publication Date
WO1999029078A2 WO1999029078A2 (fr) 1999-06-10
WO1999029078A3 true WO1999029078A3 (fr) 1999-08-12

Family

ID=20409240

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/SE1998/002193 Ceased WO1999029078A2 (fr) 1997-12-03 1998-12-01 Ameliorations de brouilleurs de donnees ou associees

Country Status (2)

Country Link
SE (1) SE9704497L (fr)
WO (1) WO1999029078A2 (fr)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
RU2505932C2 (ru) * 2009-07-03 2014-01-27 ЗетТиИ Корпорейшн Скремблирующее и дескремблирующее устройство для параллельной кадровой синхронизации
US9485128B2 (en) 1999-11-09 2016-11-01 Tq Delta, Llc System and method for scrambling using a bit scrambler and a phase scrambler

Families Citing this family (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1188284B1 (fr) * 1999-06-23 2016-07-13 At&T Wireless Services, Inc. Système et procédé de brouillage de données afin de réduire le facteur de crête dans une forme d'onde multiplexée par répartition en fréquence orthogonale (mrfo)
US6785258B1 (en) 1999-06-23 2004-08-31 At&T Wireless Services, Inc. System and method for data scrambling to reduce the crest factor in an OFDM waveform
US6952480B1 (en) 1999-09-20 2005-10-04 Applied Micro Circuits Corporation Self-synchronous data scrambler
KR20020049025A (ko) * 1999-11-09 2002-06-24 추후제출 다중반송파 통신 시스템의 반송파 위상을 스크램블하기위한 시스템 및 장치
DE19958210C2 (de) * 1999-12-02 2003-08-21 Fraunhofer Ges Forschung Vorrichtung und Verfahren zum Erzeugen einer Sendesequenz und Vorrichtung und Verfahren zum Ermitteln eines Informationsworts aus einer empfangenen Sendesequenz
JP3860762B2 (ja) 2002-02-14 2006-12-20 株式会社エヌ・ティ・ティ・ドコモ 移動通信システム、チャネル同期確立方法、及び移動局
CN100440875C (zh) * 2004-05-13 2008-12-03 中兴通讯股份有限公司 一种基带数据传输的装置及其帧同步方法
US8000404B2 (en) 2006-03-28 2011-08-16 Advanced Micro Devices, Inc. Method and apparatus to reduce the effect of crosstalk in a communications interface
WO2007126821A2 (fr) * 2006-04-24 2007-11-08 Advanced Micro Devices, Inc. Procede et appareil pour reduire l'effet d'une diaphonie dans une interface de communication

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4387460A (en) * 1979-07-23 1983-06-07 Societe Anonyme De Tele-Communication Supplementary information transmitting arrangement for a digital data transmission system
US4646305A (en) * 1983-09-26 1987-02-24 Case Communications, Inc. High speed data modem using multilevel encoding
US5148451A (en) * 1989-11-10 1992-09-15 Nec Corporation Carrier regeneration device correctly operable in mobile satellite communication
WO1995003656A1 (fr) * 1993-07-20 1995-02-02 Telia Ab Procede et appareil de synchronisation dans des systemes de transmission numerique a multiplexage par repartition orthogonale de la frequence
WO1996017455A1 (fr) * 1994-11-29 1996-06-06 Telia Ab Procede de synchronisation d'un emetteur et d'un recepteur dans un systeme radiotelephonique mobile
WO1998029978A1 (fr) * 1996-12-31 1998-07-09 Ericsson Inc. Canal secondaire supportant des violations de code
WO1998034368A2 (fr) * 1997-01-31 1998-08-06 Telefonaktiebolaget Lm Ericsson (Publ) Procede et dispositif destine a un systeme de communication

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4387460A (en) * 1979-07-23 1983-06-07 Societe Anonyme De Tele-Communication Supplementary information transmitting arrangement for a digital data transmission system
US4646305A (en) * 1983-09-26 1987-02-24 Case Communications, Inc. High speed data modem using multilevel encoding
US5148451A (en) * 1989-11-10 1992-09-15 Nec Corporation Carrier regeneration device correctly operable in mobile satellite communication
WO1995003656A1 (fr) * 1993-07-20 1995-02-02 Telia Ab Procede et appareil de synchronisation dans des systemes de transmission numerique a multiplexage par repartition orthogonale de la frequence
WO1996017455A1 (fr) * 1994-11-29 1996-06-06 Telia Ab Procede de synchronisation d'un emetteur et d'un recepteur dans un systeme radiotelephonique mobile
WO1998029978A1 (fr) * 1996-12-31 1998-07-09 Ericsson Inc. Canal secondaire supportant des violations de code
WO1998034368A2 (fr) * 1997-01-31 1998-08-06 Telefonaktiebolaget Lm Ericsson (Publ) Procede et dispositif destine a un systeme de communication

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US9485128B2 (en) 1999-11-09 2016-11-01 Tq Delta, Llc System and method for scrambling using a bit scrambler and a phase scrambler
RU2505932C2 (ru) * 2009-07-03 2014-01-27 ЗетТиИ Корпорейшн Скремблирующее и дескремблирующее устройство для параллельной кадровой синхронизации

Also Published As

Publication number Publication date
SE9704497L (sv) 1999-06-04
WO1999029078A2 (fr) 1999-06-10
SE9704497D0 (sv) 1997-12-03

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