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FI963649A - Symbolitahdistuksen ja näytteenottotaajuuden säätömenetelmä OFDM-modukoituja lähetyksiä vastaanottavassa laitteessa sekä menetelmän toteuttava laite - Google Patents

Symbolitahdistuksen ja näytteenottotaajuuden säätömenetelmä OFDM-modukoituja lähetyksiä vastaanottavassa laitteessa sekä menetelmän toteuttava laite Download PDF

Info

Publication number
FI963649A
FI963649A FI963649A FI963649A FI963649A FI 963649 A FI963649 A FI 963649A FI 963649 A FI963649 A FI 963649A FI 963649 A FI963649 A FI 963649A FI 963649 A FI963649 A FI 963649A
Authority
FI
Finland
Prior art keywords
adjusting
sampling frequency
symbol synchronization
receiving ofdm
modulated transmissions
Prior art date
Application number
FI963649A
Other languages
English (en)
Swedish (sv)
Other versions
FI102231B1 (fi
FI102231B (fi
FI963649A0 (fi
Inventor
Jari Junell
Mika Kasslin
Mikko Kokkonen
Original Assignee
Nokia Technology Gmbh
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 Nokia Technology Gmbh filed Critical Nokia Technology Gmbh
Priority to FI963649A priority Critical patent/FI102231B/fi
Publication of FI963649A0 publication Critical patent/FI963649A0/fi
Priority to DE69738249T priority patent/DE69738249T2/de
Priority to EP97115777A priority patent/EP0829988B1/en
Priority to US08/931,531 priority patent/US6125124A/en
Publication of FI963649A publication Critical patent/FI963649A/fi
Application granted granted Critical
Publication of FI102231B1 publication Critical patent/FI102231B1/fi
Publication of FI102231B publication Critical patent/FI102231B/fi

Links

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
    • H04L25/0216—Channel estimation of impulse response with estimation of channel length
    • 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
    • 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
    • H04L27/2647—Arrangements specific to the receiver only
    • H04L27/2655—Synchronisation arrangements
    • H04L27/2689—Link with other circuits, i.e. special connections between synchronisation arrangements and other circuits for achieving synchronisation
    • H04L27/2695—Link with other circuits, i.e. special connections between synchronisation arrangements and other circuits for achieving synchronisation with channel estimation, e.g. determination of delay spread, derivative or peak tracking
    • 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
    • H04L27/2605—Symbol extensions, e.g. Zero Tail, Unique Word [UW]

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Power Engineering (AREA)
  • Circuits Of Receivers In General (AREA)
  • Synchronisation In Digital Transmission Systems (AREA)
FI963649A 1996-09-16 1996-09-16 Symbolitahdistuksen ja näytteenottotaajuuden säätömenetelmä OFDM-modul oituja lähetyksiä vastaanottavassa laitteessa sekä menetelmän toteutta va laite FI102231B (fi)

Priority Applications (4)

Application Number Priority Date Filing Date Title
FI963649A FI102231B (fi) 1996-09-16 1996-09-16 Symbolitahdistuksen ja näytteenottotaajuuden säätömenetelmä OFDM-modul oituja lähetyksiä vastaanottavassa laitteessa sekä menetelmän toteutta va laite
DE69738249T DE69738249T2 (de) 1996-09-16 1997-09-11 Symbolsynchronisierung und Abtastfrequenzeinstellung in einem OFDM-Empfänger
EP97115777A EP0829988B1 (en) 1996-09-16 1997-09-11 Symbol synchronization and sampling frequency adjustment in an OFDM receiver
US08/931,531 US6125124A (en) 1996-09-16 1997-09-16 Synchronization and sampling frequency in an apparatus receiving OFDM modulated transmissions

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FI963649A FI102231B (fi) 1996-09-16 1996-09-16 Symbolitahdistuksen ja näytteenottotaajuuden säätömenetelmä OFDM-modul oituja lähetyksiä vastaanottavassa laitteessa sekä menetelmän toteutta va laite
FI963649 1996-09-16

Publications (4)

Publication Number Publication Date
FI963649A0 FI963649A0 (fi) 1996-09-16
FI963649A true FI963649A (fi) 1998-03-17
FI102231B1 FI102231B1 (fi) 1998-10-30
FI102231B FI102231B (fi) 1998-10-30

Family

ID=8546662

Family Applications (1)

Application Number Title Priority Date Filing Date
FI963649A FI102231B (fi) 1996-09-16 1996-09-16 Symbolitahdistuksen ja näytteenottotaajuuden säätömenetelmä OFDM-modul oituja lähetyksiä vastaanottavassa laitteessa sekä menetelmän toteutta va laite

Country Status (4)

Country Link
US (1) US6125124A (fi)
EP (1) EP0829988B1 (fi)
DE (1) DE69738249T2 (fi)
FI (1) FI102231B (fi)

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USRE43703E1 (en) * 1997-09-04 2012-10-02 Sony Deutschland Gmbh Transmission system for OFDM-signals with optimized synchronization
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GB2332603B (en) * 1997-12-22 2000-07-19 Lsi Logic Corp Improvements relating to multidirectional communication systems
EP0929172B1 (en) * 1998-01-06 2010-06-02 MOSAID Technologies Inc. Multicarrier modulation system, with variable symbol rates
EP0954142A1 (en) * 1998-04-28 1999-11-03 Lucent Technologies Inc. Channel estimation using a sliding window technique
JP2955285B1 (ja) * 1998-09-30 1999-10-04 松下電器産業株式会社 デジタルオーディオ受信機
DE19858106B4 (de) 1998-12-16 2014-09-25 Telefonaktiebolaget Lm Ericsson (Publ) Empfänger und Verfahren zum Verhindern einer Zwischensymbolstörung in einem Hochgeschwindigkeitsübertragungssystem
JP2000244441A (ja) * 1998-12-22 2000-09-08 Matsushita Electric Ind Co Ltd Ｏｆｄｍ送受信装置
JP3085944B2 (ja) * 1999-02-15 2000-09-11 三菱電機株式会社 Ｏｆｄｍ通信システム用受信装置
JP3486576B2 (ja) * 1999-05-18 2004-01-13 シャープ株式会社 Ｏｆｄｍ受信装置及びその周波数オフセット補償方法
EP1065855A1 (en) * 1999-06-29 2001-01-03 Sony International (Europe) GmbH Adaptation of cyclic extensions in an OFDM communication system
US6961393B1 (en) * 1999-07-14 2005-11-01 Lucent Technologies Inc. In-band-on-channel (IBOC) system and methods of operation using orthogonal frequency division multiplexing (OFDM) with timing and frequency offset correction
US6721372B1 (en) * 2000-03-17 2004-04-13 Lucent Technologies Inc. Intelligent software controlled correction of frequency tracking for a local oscillator of a receiver of a wireless device
JP3581294B2 (ja) 2000-03-31 2004-10-27 株式会社東芝 受信装置
JP4378837B2 (ja) * 2000-04-07 2009-12-09 ソニー株式会社 受信装置
US6970416B1 (en) * 2000-07-07 2005-11-29 Telecommunications Research Laboratories OFDM system with simple terminals
US20020065047A1 (en) * 2000-11-30 2002-05-30 Moose Paul H. Synchronization, channel estimation and pilot tone tracking system
CN1227882C (zh) * 2000-12-11 2005-11-16 西门子公司 用于在通信系统中估测信道性能的方法
US8619922B1 (en) 2002-02-04 2013-12-31 Marvell International Ltd. Method and apparatus for acquisition and tracking of orthogonal frequency division multiplexing symbol timing, carrier frequency offset and phase noise
US7218691B1 (en) 2001-03-05 2007-05-15 Marvell International Ltd. Method and apparatus for estimation of orthogonal frequency division multiplexing symbol timing and carrier frequency offset
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US7020218B2 (en) * 2001-06-18 2006-03-28 Arnesen David M Sliding-window transform with integrated windowing
CA2809894C (en) 2001-06-27 2017-12-12 Skky Incorporated Improved media delivery platform
US7577188B1 (en) 2001-09-13 2009-08-18 Cisco Technology, Inc. Physical layer and MAC enhancements using complex sequences on a wireless channel
US7039000B2 (en) * 2001-11-16 2006-05-02 Mitsubishi Electric Research Laboratories, Inc. Timing synchronization for OFDM-based wireless networks
US7269125B2 (en) * 2001-12-26 2007-09-11 Xm Satellite Radio, Inc. Method and apparatus for timing recovery in an OFDM system
GB2395094A (en) 2002-10-28 2004-05-12 Sony Uk Ltd Determining a symbol synch time in an OFDM receiver
KR100802619B1 (ko) 2002-11-07 2008-02-13 엘지전자 주식회사 무선 링크 제어 프로토콜에 따르는 수신기에서의 알엘씨데이터 수신 윈도우 처리 방법
US7236747B1 (en) * 2003-06-18 2007-06-26 Samsung Electronics Co., Ltd. (SAIT) Increasing OFDM transmit power via reduction in pilot tone
US20070053281A1 (en) * 2003-10-03 2007-03-08 Nokia Corporation Method system and receiver for receiving a multi-carrier transmission
US7570666B2 (en) * 2005-02-01 2009-08-04 Industrial Technology Research Institute Method and apparatus for guard interval detection in multi-carrier receiver
TWI297570B (en) * 2005-02-17 2008-06-01 Ind Tech Res Inst Symbol timing synchronization system for orthogonal frequency division multiplexing system
US7894818B2 (en) * 2005-06-15 2011-02-22 Samsung Electronics Co., Ltd. Apparatus and method for multiplexing broadcast and unicast traffic in a multi-carrier wireless network
KR100771355B1 (ko) * 2005-08-29 2007-10-29 주식회사 엘지화학 열가소성 수지 조성물
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US8073064B2 (en) * 2008-04-18 2011-12-06 Newport Media, Inc. Robust FFT trigger point tracking for echo channels in OFDM based communication systems
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Also Published As

Publication number Publication date
FI102231B1 (fi) 1998-10-30
FI102231B (fi) 1998-10-30
DE69738249D1 (de) 2007-12-13
FI963649A0 (fi) 1996-09-16
EP0829988A3 (en) 1998-03-25
EP0829988B1 (en) 2007-10-31
DE69738249T2 (de) 2008-02-28
EP0829988A2 (en) 1998-03-18
US6125124A (en) 2000-09-26

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