DE69427415D1 - OFDM-Empfänger mit Ausgleichung von differenziellen Verzögerungen - Google Patents

OFDM-Empfänger mit Ausgleichung von differenziellen Verzögerungen

Info

Publication number
DE69427415D1
DE69427415D1 DE69427415T DE69427415T DE69427415D1 DE 69427415 D1 DE69427415 D1 DE 69427415D1 DE 69427415 T DE69427415 T DE 69427415T DE 69427415 T DE69427415 T DE 69427415T DE 69427415 D1 DE69427415 D1 DE 69427415D1
Authority
DE
Germany
Prior art keywords
compensation
ofdm receiver
differential delays
delays
differential
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
DE69427415T
Other languages
English (en)
Other versions
DE69427415T2 (de
Inventor
Constant Paul Marie Joz Baggen
Arie Geert Cornelis Koppelaar
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.)
IPG Electronics 503 Ltd
Original Assignee
Koninklijke Philips Electronics NV
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 Koninklijke Philips Electronics NV filed Critical Koninklijke Philips Electronics NV
Publication of DE69427415D1 publication Critical patent/DE69427415D1/de
Application granted granted Critical
Publication of DE69427415T2 publication Critical patent/DE69427415T2/de
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Classifications

    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04LTRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L27/00Modulated-carrier systems
    • H04L27/26Systems using multi-frequency codes
    • H04L27/2601Multicarrier modulation systems
    • H04L27/2647Arrangements specific to the receiver only
    • H04L27/2649Demodulators
    • H04L27/2653Demodulators with direct demodulation of individual subcarriers
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04LTRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L27/00Modulated-carrier systems
    • H04L27/26Systems using multi-frequency codes
    • H04L27/2601Multicarrier modulation systems
    • H04L27/2647Arrangements specific to the receiver only
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04LTRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L27/00Modulated-carrier systems
    • H04L27/01Equalisers
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04LTRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L27/00Modulated-carrier systems
    • H04L27/26Systems using multi-frequency codes
    • H04L27/2601Multicarrier modulation systems
    • H04L27/2626Arrangements specific to the transmitter only
    • H04L27/2646Arrangements specific to the transmitter only using feedback from receiver for adjusting OFDM transmission parameters, e.g. transmission timing or guard interval length
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04LTRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L5/00Arrangements affording multiple use of the transmission path
    • H04L5/0001Arrangements for dividing the transmission path
    • H04L5/0003Two-dimensional division
    • H04L5/0005Time-frequency
    • H04L5/0007Time-frequency the frequencies being orthogonal, e.g. OFDM(A), DMT

Landscapes

  • Engineering & Computer Science (AREA)
  • Signal Processing (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Cable Transmission Systems, Equalization Of Radio And Reduction Of Echo (AREA)
  • Television Systems (AREA)
  • Noise Elimination (AREA)
  • Dc Digital Transmission (AREA)
DE69427415T 1993-02-08 1994-02-02 OFDM-Empfänger mit Ausgleichung von differenziellen Verzögerungen Expired - Lifetime DE69427415T2 (de)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP93200346 1993-02-08

Publications (2)

Publication Number Publication Date
DE69427415D1 true DE69427415D1 (de) 2001-07-19
DE69427415T2 DE69427415T2 (de) 2002-05-29

Family

ID=8213622

Family Applications (1)

Application Number Title Priority Date Filing Date
DE69427415T Expired - Lifetime DE69427415T2 (de) 1993-02-08 1994-02-02 OFDM-Empfänger mit Ausgleichung von differenziellen Verzögerungen

Country Status (5)

Country Link
US (1) US5483529A (de)
JP (1) JP3392501B2 (de)
KR (1) KR100318142B1 (de)
DE (1) DE69427415T2 (de)
ES (1) ES2159540T3 (de)

Families Citing this family (78)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5627863A (en) * 1994-07-15 1997-05-06 Amati Communications Corporation Frame synchronization in multicarrier transmission systems
US6334219B1 (en) 1994-09-26 2001-12-25 Adc Telecommunications Inc. Channel selection for a hybrid fiber coax network
KR100362072B1 (ko) * 1994-12-23 2003-02-11 코닌클리케 필립스 일렉트로닉스 엔.브이. 송신신호수신기및수신방법
USRE42236E1 (en) 1995-02-06 2011-03-22 Adc Telecommunications, Inc. Multiuse subcarriers in multipoint-to-point communication using orthogonal frequency division multiplexing
US7280564B1 (en) 1995-02-06 2007-10-09 Adc Telecommunications, Inc. Synchronization techniques in multipoint-to-point communication using orthgonal frequency division multiplexing
US5642382A (en) * 1995-03-01 1997-06-24 Hitachi America, Ltd. Fir filters with multiplexed inputs suitable for use in reconfigurable adaptive equalizers
FR2733869B1 (fr) * 1995-05-02 1997-07-18 France Telecom Signal multiporteuse, procede de construction d'un tel signal et procedes d'emission et de reception correspondants
GB2304504A (en) * 1995-08-19 1997-03-19 Northern Telecom Ltd OFDM receiver includes digital filter
GB9521739D0 (en) * 1995-10-24 1996-01-03 Nat Transcommunications Ltd Decoding carriers encoded using orthogonal frequency division multiplexing
US5764690A (en) * 1996-06-04 1998-06-09 Motorola, Inc. Apparatus for despreading and demodulating a burst CDMA signal
US6757913B2 (en) 1996-07-15 2004-06-29 Gregory D. Knox Wireless music and data transceiver system
US6118758A (en) * 1996-08-22 2000-09-12 Tellabs Operations, Inc. Multi-point OFDM/DMT digital communications system including remote service unit with improved transmitter architecture
US5790514A (en) * 1996-08-22 1998-08-04 Tellabs Operations, Inc. Multi-point OFDM/DMT digital communications system including remote service unit with improved receiver architecture
US6771590B1 (en) * 1996-08-22 2004-08-03 Tellabs Operations, Inc. Communication system clock synchronization techniques
US5995483A (en) * 1996-08-22 1999-11-30 Tellabs Operations, Inc. Apparatus and method for upstream clock synchronization in a multi-point OFDM/DMT digital communication system
US6950388B2 (en) * 1996-08-22 2005-09-27 Tellabs Operations, Inc. Apparatus and method for symbol alignment in a multi-point OFDM/DMT digital communications system
FR2754125B1 (fr) * 1996-09-30 2004-07-09 Sc Reprosol Dispositif et procede d'egalisation vectorielle d'un signal ofdm
JPH10257013A (ja) * 1997-03-14 1998-09-25 Toshiba Corp 受信装置
US6353629B1 (en) * 1997-05-12 2002-03-05 Texas Instruments Incorporated Poly-path time domain equalization
DE59807975D1 (de) * 1997-06-20 2003-05-22 Infineon Technologies Ag Datenübertragungsverfahren mit einer mehrzahl von nicht-äquidistanten frequenzbändern
WO1999023820A1 (en) 1997-11-03 1999-05-14 International Communications Products, Inc. Link adapter interface for upgrading existing satellite communication system for enhanced modulation and coding
US6362784B1 (en) 1998-03-31 2002-03-26 Matsuda Electric Industrial Co., Ltd. Antenna unit and digital television receiver
ES2389626T3 (es) 1998-04-03 2012-10-29 Tellabs Operations, Inc. Filtro para acortamiento de respuesta al impulso, con restricciones espectrales adicionales, para transmisión de múltiples portadoras
US6631175B2 (en) * 1998-04-03 2003-10-07 Tellabs Operations, Inc. Spectrally constrained impulse shortening filter for a discrete multi-tone receiver
US7440498B2 (en) 2002-12-17 2008-10-21 Tellabs Operations, Inc. Time domain equalization for discrete multi-tone systems
FR2777407B1 (fr) * 1998-04-10 2000-06-30 Wavecom Sa Signal de radiotelephonie cellulaire a canal supplementaire affecte au sens descendant, procede, systeme, mobile et station de base correspondant
US6795424B1 (en) 1998-06-30 2004-09-21 Tellabs Operations, Inc. Method and apparatus for interference suppression in orthogonal frequency division multiplexed (OFDM) wireless communication systems
CN1117415C (zh) * 1998-07-02 2003-08-06 松下电器产业株式会社 无线装置、通信系统和数字电视广播接收装置
DE19934660C2 (de) * 1998-09-02 2000-08-31 Daimler Chrysler Ag Mehrfrequenz-Superpositions-Empfänger
US6278685B1 (en) 1999-08-19 2001-08-21 Intellon Corporation Robust transmission mode
JP2001177326A (ja) 1999-10-08 2001-06-29 Matsushita Electric Ind Co Ltd アンテナ装置、通信システム
US7284064B1 (en) 2000-03-21 2007-10-16 Intel Corporation Method and apparatus to determine broadcast content and scheduling in a broadcast system
US6529868B1 (en) * 2000-03-28 2003-03-04 Tellabs Operations, Inc. Communication system noise cancellation power signal calculation techniques
US6289000B1 (en) 2000-05-19 2001-09-11 Intellon Corporation Frame control encoder/decoder for robust OFDM frame transmissions
US20020067772A1 (en) * 2000-06-28 2002-06-06 Shepperd Michael B. Method and system for sending information over metal wire
US7298691B1 (en) 2000-08-04 2007-11-20 Intellon Corporation Method and protocol to adapt each unique connection in a multi-node network to a maximum data rate
US7469297B1 (en) 2000-08-04 2008-12-23 Intellon Corporation Mechanism for using a quasi-addressed response to bind to a message requesting the response
US6987770B1 (en) 2000-08-04 2006-01-17 Intellon Corporation Frame forwarding in an adaptive network
US6907044B1 (en) 2000-08-04 2005-06-14 Intellon Corporation Method and protocol to support contention-free intervals and QoS in a CSMA network
US7352770B1 (en) * 2000-08-04 2008-04-01 Intellon Corporation Media access control protocol with priority and contention-free intervals
US6909723B1 (en) 2000-08-04 2005-06-21 Intellon Corporation Segment bursting with priority pre-emption and reduced latency
US7275254B1 (en) 2000-11-21 2007-09-25 Intel Corporation Method and apparatus for determining and displaying the service level of a digital television broadcast signal
US20020143591A1 (en) * 2001-03-30 2002-10-03 Connelly Jay H. Method and apparatus for a hybrid content on demand broadcast system
US7185352B2 (en) * 2001-05-11 2007-02-27 Intel Corporation Method and apparatus for combining broadcast schedules and content on a digital broadcast-enabled client platform
US20020194603A1 (en) * 2001-06-15 2002-12-19 Jay H. Connelly Method and apparatus to distribute content using a multi-stage broadcast system
US20030005451A1 (en) * 2001-06-15 2003-01-02 Connelly Jay H. Method and apparatus to distribute content descriptors in a content distribution broadcast system
US20030005465A1 (en) * 2001-06-15 2003-01-02 Connelly Jay H. Method and apparatus to send feedback from clients to a server in a content distribution broadcast system
US7047456B2 (en) * 2001-08-28 2006-05-16 Intel Corporation Error correction for regional and dynamic factors in communications
US20030061611A1 (en) * 2001-09-26 2003-03-27 Ramesh Pendakur Notifying users of available content and content reception based on user profiles
US20030066090A1 (en) * 2001-09-28 2003-04-03 Brendan Traw Method and apparatus to provide a personalized channel
US8943540B2 (en) * 2001-09-28 2015-01-27 Intel Corporation Method and apparatus to provide a personalized channel
US7209433B2 (en) * 2002-01-07 2007-04-24 Hitachi, Ltd. Channel estimation and compensation techniques for use in frequency division multiplexed systems
US7499392B2 (en) * 2002-05-15 2009-03-03 Thomson Licensing OFDM equalizer filter with shared multiplier
US7173991B2 (en) 2002-06-17 2007-02-06 Hitachi, Ltd. Methods and apparatus for spectral filtering channel estimates
US8149703B2 (en) * 2002-06-26 2012-04-03 Qualcomm Atheros, Inc. Powerline network bridging congestion control
US7826466B2 (en) * 2002-06-26 2010-11-02 Atheros Communications, Inc. Communication buffer scheme optimized for VoIP, QoS and data networking over a power line
US7120847B2 (en) * 2002-06-26 2006-10-10 Intellon Corporation Powerline network flood control restriction
US7139340B2 (en) * 2002-06-28 2006-11-21 Hitachi, Ltd. Robust OFDM carrier recovery methods and apparatus
US7623542B2 (en) 2002-10-21 2009-11-24 Intellon Corporation Contention-free access intervals on a CSMA network
US7281187B2 (en) 2003-11-20 2007-10-09 Intellon Corporation Using error checking bits to communicated an address or other bits
US8090857B2 (en) 2003-11-24 2012-01-03 Qualcomm Atheros, Inc. Medium access control layer that encapsulates data from a plurality of received data units into a plurality of independently transmittable blocks
EP1712018A1 (de) * 2004-01-28 2006-10-18 Koninklijke Philips Electronics N.V. Diversity-system zum senden eines signals mit subträgern
US7660327B2 (en) * 2004-02-03 2010-02-09 Atheros Communications, Inc. Temporary priority promotion for network communications in which access to a shared medium depends on a priority level
US7321550B2 (en) * 2004-02-17 2008-01-22 Industrial Technology Research Institute Method of equalization in an OFDM system
US7715425B2 (en) * 2004-02-26 2010-05-11 Atheros Communications, Inc. Channel adaptation synchronized to periodically varying channel
US7580454B2 (en) * 2004-07-14 2009-08-25 Fundacion Tarpuy Multidimensional decision-directed trained adaptive equalization
US8041233B2 (en) * 2004-07-14 2011-10-18 Fundación Tarpuy Adaptive equalization in coherent fiber optic communication
US7636370B2 (en) * 2005-03-03 2009-12-22 Intellon Corporation Reserving time periods for communication on power line networks
US7822059B2 (en) 2005-07-27 2010-10-26 Atheros Communications, Inc. Managing contention-free time allocations in a network
US8175190B2 (en) 2005-07-27 2012-05-08 Qualcomm Atheros, Inc. Managing spectra of modulated signals in a communication network
FR2891674B1 (fr) * 2005-09-30 2007-12-21 Radiotelephone Sfr Procede et systeme de planification automatique de retards des temps d'emission des emetteurs d'un reseau de diffusion synchrone en temps et en frequence
WO2008141165A1 (en) * 2007-05-10 2008-11-20 Intellon Corporation Managing distributed access to a shared medium
WO2009155134A2 (en) * 2008-06-03 2009-12-23 Thomson Licensing Llc Apparatus and method for determination of signal format
JP5678171B2 (ja) 2010-04-12 2015-02-25 クゥアルコム・インコーポレイテッドQualcomm Incorporated ネットワークにおける低オーバーヘッド通信のためのチャネル推定
US8862957B2 (en) * 2012-07-27 2014-10-14 Lsi Corporation Symbol selective scaling with parity forcing
US8891605B2 (en) 2013-03-13 2014-11-18 Qualcomm Incorporated Variable line cycle adaptation for powerline communications
FR3056368B1 (fr) * 2016-09-21 2018-09-28 Commissariat A L'energie Atomique Et Aux Energies Alternatives Emetteur ofdm a filtrage par blocs et systeme d'emission/reception correspondant
CN110261821B (zh) * 2019-07-18 2021-12-10 中电科思仪科技股份有限公司 一种基于信息解调相关的时差估计方法及装置

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4785447A (en) * 1987-02-17 1988-11-15 Nec Corporation FDM demultiplexer using oversampled digital filters
US5191576A (en) * 1988-11-18 1993-03-02 L'Etat Francais and Telediffusion de France S.A. Method for broadcasting of digital data, notably for radio broadcasting at high throughput rate towards mobile receivers, with time frequency interlacing and analog synchronization
FR2658017B1 (fr) * 1990-02-06 1992-06-05 France Etat Procede de diffusion de donnees numeriques, notamment pour la radiodiffusion a haut debit vers des mobiles, a entrelacement temps-frequence et aide a l'acquisition de la commande automatique de frequence, et recepteur correspondant.
JP2822270B2 (ja) * 1990-07-03 1998-11-11 ソニー株式会社 波形歪みの除去回路
JPH0477180A (ja) * 1990-07-17 1992-03-11 Nec Corp ゴースト除去回路
US5321512A (en) * 1993-05-07 1994-06-14 Zoran Corporation Ghost signal cancellation system using feedforward and feedback filters for television signals

Also Published As

Publication number Publication date
JPH06261019A (ja) 1994-09-16
JP3392501B2 (ja) 2003-03-31
ES2159540T3 (es) 2001-10-16
KR100318142B1 (ko) 2002-03-20
DE69427415T2 (de) 2002-05-29
KR940020799A (ko) 1994-09-16
US5483529A (en) 1996-01-09

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Legal Events

Date Code Title Description
8364 No opposition during term of opposition
8327 Change in the person/name/address of the patent owner

Owner name: IPG ELECTRONICS 503 LTD., ST. PETER PORT, GUER, GB

8328 Change in the person/name/address of the agent

Representative=s name: PATENTANWAELTE BRESSEL UND PARTNER, 12489 BERLIN

R082 Change of representative

Ref document number: 613266

Country of ref document: EP

Representative=s name: PATENTANWAELTE BRESSEL UND PARTNER, DE