SE9700308L - Förfarande och anordning för initial synkronisering i ett kommunikationssystem - Google Patents

Förfarande och anordning för initial synkronisering i ett kommunikationssystem

Info

Publication number
SE9700308L
SE9700308L SE9700308A SE9700308A SE9700308L SE 9700308 L SE9700308 L SE 9700308L SE 9700308 A SE9700308 A SE 9700308A SE 9700308 A SE9700308 A SE 9700308A SE 9700308 L SE9700308 L SE 9700308L
Authority
SE
Sweden
Prior art keywords
synchronization
symbols
transmitter
receiver
communication system
Prior art date
Application number
SE9700308A
Other languages
English (en)
Other versions
SE517930C2 (sv
SE9700308D0 (sv
Inventor
Tore Andre
Original Assignee
Ericsson Telefon Ab L M
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 Ericsson Telefon Ab L M filed Critical Ericsson Telefon Ab L M
Priority to SE9700308A priority Critical patent/SE517930C2/sv
Publication of SE9700308D0 publication Critical patent/SE9700308D0/sv
Priority to DE69834101T priority patent/DE69834101T2/de
Priority to PCT/SE1998/000138 priority patent/WO1998034368A2/en
Priority to EP98902340A priority patent/EP0956676B1/en
Priority to AU58895/98A priority patent/AU5889598A/en
Priority to US09/355,483 priority patent/US6252908B1/en
Publication of SE9700308L publication Critical patent/SE9700308L/sv
Publication of SE517930C2 publication Critical patent/SE517930C2/sv

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
    • H04L27/2655—Synchronisation arrangements
    • H04L27/2662—Symbol 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
    • H04L27/2602—Signal structure
    • H04L27/261—Details of reference signals
    • H04L27/2613—Structure of the reference signals
    • 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
    • H04L27/2675—Pilot or known symbols

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Synchronisation In Digital Transmission Systems (AREA)
  • Cable Transmission Systems, Equalization Of Radio And Reduction Of Echo (AREA)
SE9700308A 1997-01-31 1997-01-31 Förfarande och anordning för initial synkronisering i ett kommunikationssystem SE517930C2 (sv)

Priority Applications (6)

Application Number Priority Date Filing Date Title
SE9700308A SE517930C2 (sv) 1997-01-31 1997-01-31 Förfarande och anordning för initial synkronisering i ett kommunikationssystem
DE69834101T DE69834101T2 (de) 1997-01-31 1998-01-30 Verfahren und vorrichtung in einem nachrichtenübertragungssystem
PCT/SE1998/000138 WO1998034368A2 (en) 1997-01-31 1998-01-30 Method and device in a communication system
EP98902340A EP0956676B1 (en) 1997-01-31 1998-01-30 Method and device in a communication system
AU58895/98A AU5889598A (en) 1997-01-31 1998-01-30 Method and device in a communication system
US09/355,483 US6252908B1 (en) 1997-01-31 1998-01-30 Method and device in a communication system

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
SE9700308A SE517930C2 (sv) 1997-01-31 1997-01-31 Förfarande och anordning för initial synkronisering i ett kommunikationssystem

Publications (3)

Publication Number Publication Date
SE9700308D0 SE9700308D0 (sv) 1997-01-31
SE9700308L true SE9700308L (sv) 1998-08-01
SE517930C2 SE517930C2 (sv) 2002-08-06

Family

ID=20405597

Family Applications (1)

Application Number Title Priority Date Filing Date
SE9700308A SE517930C2 (sv) 1997-01-31 1997-01-31 Förfarande och anordning för initial synkronisering i ett kommunikationssystem

Country Status (6)

Country Link
US (1) US6252908B1 (sv)
EP (1) EP0956676B1 (sv)
AU (1) AU5889598A (sv)
DE (1) DE69834101T2 (sv)
SE (1) SE517930C2 (sv)
WO (1) WO1998034368A2 (sv)

Families Citing this family (22)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6363175B1 (en) 1997-04-02 2002-03-26 Sonyx, Inc. Spectral encoding of information
SE9704497L (sv) * 1997-12-03 1999-06-04 Telia Ab Förbättringar av, eller med avseende på, data scramblers
US6876675B1 (en) 1998-02-06 2005-04-05 Cisco Technology, Inc. Synchronization in OFDM systems
US6549592B1 (en) * 1998-02-06 2003-04-15 Cisco Technology, Inc Enhanced synchronization burst for OFDM systems
US7020071B2 (en) * 1998-11-25 2006-03-28 Lucent Technologies Inc. Methods and apparatus for wireless communication using orthogonal frequency division multiplexing
US6760348B1 (en) * 1998-12-28 2004-07-06 Globespanvirata, Inc. System and method for tone detection in a discrete multi-tone system
US7054504B2 (en) * 1999-02-25 2006-05-30 Ludwig Lester F Relative optical path phase reconstruction in the correction of misfocused images using fractional powers of the fourier transform
US6650476B1 (en) * 1999-02-25 2003-11-18 Lester Frank Ludwig Image processing utilizing non-positive-definite transfer functions via fractional fourier transform
US7039252B2 (en) 1999-02-25 2006-05-02 Ludwig Lester F Iterative approximation environments for modeling the evolution of an image propagating through a physical medium in restoration and other applications
US6687418B1 (en) * 1999-02-25 2004-02-03 Lester Frank Ludwig Correction of image misfocus via fractional fourier transform
EP1047236A1 (de) * 1999-04-22 2000-10-25 Abb Research Ltd. Synchronisation in einem Datenübertragungssystem mittels Fast Fourier Transformation
US6862297B1 (en) 1999-12-21 2005-03-01 Cisco Technology, Inc. Wide range frequency offset estimation in OFDM systems
US6724849B1 (en) * 2000-02-29 2004-04-20 Centillium Communications, Inc. Method and apparatus for timing recovery in ADSL transceivers under a TCM-ISDN crosstalk environment
US7020074B1 (en) * 2000-04-03 2006-03-28 Nortel Networks Limited Synchronization method and apparatus for frequency division multiplexed telecommunication systems
US6930989B1 (en) * 2000-06-20 2005-08-16 Cisco Technology, Inc. Wide frequency offset correction using encoded interburst phase differences
US6856648B1 (en) 2000-07-17 2005-02-15 Telefonaktiebolaget Lm Ericsson Method and apparatus for equalizer updating and sampling rate control
CN1228951C (zh) * 2001-02-22 2005-11-23 皇家菲利浦电子有限公司 具有简化信道响应估计的多载波传输***
CN1224228C (zh) * 2001-02-22 2005-10-19 皇家菲利浦电子有限公司 具备降低复杂度的泄漏矩阵相乘的多载波传输***
US7127005B2 (en) * 2001-03-23 2006-10-24 James Stuart Wight Computational circuits and methods for processing modulated signals having non-constant envelopes
US7006587B1 (en) * 2001-11-20 2006-02-28 Cisco Technolgy, Inc. Preamble aided synchronization
ATE328395T1 (de) * 2002-02-27 2006-06-15 Sonyx Inc Vorrichtung und verfahren zur kodierung von information und vorrichtung und verfahren zur dekodierung von kodierten information
US7881398B2 (en) * 2006-08-21 2011-02-01 Agere Systems Inc. FFT numerology for an OFDM transmission system

Family Cites Families (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5323649B2 (sv) * 1971-10-06 1978-07-15
GB2153186B (en) 1984-01-13 1987-04-23 Ncr Co Digital data receiver including timing adjustment circuit
GB8800740D0 (en) 1988-01-13 1988-02-10 Ncr Co Data modem receiver
JPH0276430A (ja) 1988-09-13 1990-03-15 Fujitsu Ltd 逆トレーニング信号検出機能を付加した初期引き込み方式
US5206886A (en) * 1990-04-16 1993-04-27 Telebit Corporation Method and apparatus for correcting for clock and carrier frequency offset, and phase jitter in mulicarrier modems
SE500986C2 (sv) 1993-07-20 1994-10-17 Telia Ab Förfarande och anordning för synkronisering i digitalt transmissionssystem av typen OFDM
SE9400116L (sv) 1994-01-18 1995-03-27 Telia Ab Förfarande och arrangemang för synkronisering vid OFDM- modulering
JP2989742B2 (ja) * 1994-05-20 1999-12-13 株式会社日立製作所 ディジタル放送システムおよび該ディジタル放送用の送信システムならびに該ディジタル放送用の受信システム
US5627863A (en) * 1994-07-15 1997-05-06 Amati Communications Corporation Frame synchronization in multicarrier transmission systems

Also Published As

Publication number Publication date
DE69834101D1 (de) 2006-05-18
SE517930C2 (sv) 2002-08-06
WO1998034368A2 (en) 1998-08-06
EP0956676A2 (en) 1999-11-17
DE69834101T2 (de) 2006-08-31
US6252908B1 (en) 2001-06-26
SE9700308D0 (sv) 1997-01-31
EP0956676B1 (en) 2006-04-05
WO1998034368A3 (en) 1998-12-10
AU5889598A (en) 1998-08-25

Similar Documents

Publication Publication Date Title
SE9700308L (sv) Förfarande och anordning för initial synkronisering i ett kommunikationssystem
ATE271293T1 (de) Verfahren und vorrichtung zur übertragung von digitaldaten mit variabler rate
ATE393527T1 (de) Vorrichtung und verfahren zur verringerung des verhältnisses von spitzen zur durchschnittsleistung in mehrträgerkommunikationssystemen
HK1060669A1 (en) Method and device for performing demodulation of information signal
CL2007003699A1 (es) Transmisor y metodo para comunicar flujo de datos digitales utilizando un sistema de transmision de multiplexion ortogonal de division de frecuencia (ofdm) (divisional de la solicitud 1398-98).
EP0164749A3 (en) High speed data communications system
WO2002039598A3 (en) Transmission security for wireless communications
SE9302453L (sv) Förfarande och anordning för synkronisering i digitalt transmissionssystem av typen OFDM
TW325609B (en) Multiple-modulation communication system
EP0392723A3 (en) Data communications apparatus and method
CA2361247A1 (en) Transmitter, transmitting method, receiver, and receiving method for mc-cdma communication system
BR0210055A (pt) Processo para sincronização no fluxo descendente de múltiplos usuários em um sistema ponto a multiponto com modulação ofdm
DK0573541T3 (da) System til at sende og modtage digitaldata,modtager og sender til andvendelse i et sådant system
ATE340441T1 (de) Qam mit quantisierter leistung
WO2002051089A3 (de) Mehrträgerübertragung auf einer energieversorgungsleitung
AU9126298A (en) Method and apparatus for generating a line impairment learning signal for a datacommunication system
EP0003009A3 (en) A method and an apparatus for transferring digital information in a telephone system
CA2340685A1 (en) Method and device for transmitting information symbols using a plurality of carriers and method and device for receiving information symbols
WO2002075995A3 (en) Full spectrum optical communication system and methods thereof
WO2002019606A3 (en) Partial response signaling for orthogonal frequency division multiplexing
ATE520235T1 (de) Datenübertragungsverfahren und datenübertragungssystem
CA2181050A1 (en) Method, Device, and Radio for Compensating for Modulator Frequency Drift While Allowing for Data Transmission
AU2002331694A1 (en) Optical communications systems, devices, and methods
KR920020869A (ko) 신호 전송 시스템
EP1085714A3 (de) Differentielle Demodulation in zwei oder mehreren Dimensionen

Legal Events

Date Code Title Description
NUG Patent has lapsed