DK1068704T3 - Filter til impulssvarforkortning, med yderligere spektrale begrænsninger, til multibærebølgeoverførsel - Google Patents

Filter til impulssvarforkortning, med yderligere spektrale begrænsninger, til multibærebølgeoverførsel

Info

Publication number
DK1068704T3
DK1068704T3 DK99915260.6T DK99915260T DK1068704T3 DK 1068704 T3 DK1068704 T3 DK 1068704T3 DK 99915260 T DK99915260 T DK 99915260T DK 1068704 T3 DK1068704 T3 DK 1068704T3
Authority
DK
Denmark
Prior art keywords
impulse response
additional spectral
wave transfer
shortening filter
spectral constraints
Prior art date
Application number
DK99915260.6T
Other languages
English (en)
Inventor
Gopal Harikumar
Daniel Marchok
Kenneth J Rudofski
Original Assignee
Tellabs Operations Inc
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
Priority claimed from US09/054,468 external-priority patent/US6631175B2/en
Priority claimed from US09/233,914 external-priority patent/US6526105B1/en
Application filed by Tellabs Operations Inc filed Critical Tellabs Operations Inc
Priority claimed from PCT/US1999/007422 external-priority patent/WO1999052250A1/en
Application granted granted Critical
Publication of DK1068704T3 publication Critical patent/DK1068704T3/da

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
    • H04L25/03—Shaping networks in transmitter or receiver, e.g. adaptive shaping networks
    • H04L25/03006—Arrangements for removing intersymbol interference
    • H04L25/03012—Arrangements for removing intersymbol interference operating in the time domain
    • H04L25/03019—Arrangements for removing intersymbol interference operating in the time domain adaptive, i.e. capable of adjustment during data reception
    • 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
    • H04L25/03006—Arrangements for removing intersymbol interference
    • H04L25/03821—Inter-carrier interference cancellation [ICI]
    • 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
    • H04L25/03006—Arrangements for removing intersymbol interference
    • H04L25/03012—Arrangements for removing intersymbol interference operating in the time domain
    • H04L25/03114—Arrangements for removing intersymbol interference operating in the time domain non-adaptive, i.e. not adjustable, manually adjustable, or adjustable only during the reception of special signals
    • 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
    • H04L25/03006—Arrangements for removing intersymbol interference
    • H04L2025/03592—Adaptation methods
    • H04L2025/03598—Algorithms
    • H04L2025/03611—Iterative algorithms
    • H04L2025/03636—Algorithms using least mean square [LMS]

Landscapes

  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Cable Transmission Systems, Equalization Of Radio And Reduction Of Echo (AREA)
DK99915260.6T 1998-04-03 1999-04-05 Filter til impulssvarforkortning, med yderligere spektrale begrænsninger, til multibærebølgeoverførsel DK1068704T3 (da)

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
US09/054,468 US6631175B2 (en) 1998-04-03 1998-04-03 Spectrally constrained impulse shortening filter for a discrete multi-tone receiver
US8733698P 1998-05-29 1998-05-29
US09/233,914 US6526105B1 (en) 1998-05-29 1999-01-21 Time domain equalization for discrete multi-tone systems
PCT/US1999/007422 WO1999052250A1 (en) 1998-04-03 1999-04-05 Filter for impulse response shortening, with addition spectral constraints, for multicarrier transmission

Publications (1)

Publication Number Publication Date
DK1068704T3 true DK1068704T3 (da) 2012-09-17

Family

ID=46874800

Family Applications (1)

Application Number Title Priority Date Filing Date
DK99915260.6T DK1068704T3 (da) 1998-04-03 1999-04-05 Filter til impulssvarforkortning, med yderligere spektrale begrænsninger, til multibærebølgeoverførsel

Country Status (3)

Country Link
US (1) US9014250B2 (da)
DK (1) DK1068704T3 (da)
ES (1) ES2389626T3 (da)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US11012087B2 (en) * 2017-11-23 2021-05-18 M31 Technology Corporation Encoding and decoding architecture for high speed data communication system and related physical layer circuit, transmitter and receiver and communication system thereof

Family Cites Families (218)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3795772A (en) 1972-05-01 1974-03-05 Us Navy Synchronization system for pulse orthogonal multiplexing systems
US3978482A (en) 1975-03-24 1976-08-31 Hughes Aircraft Company Dynamically focused thinned array
JPS6039399B2 (ja) 1978-01-25 1985-09-05 株式会社日立製作所 洗濯機の稼動方法
US4300229A (en) 1979-02-21 1981-11-10 Nippon Electric Co., Ltd. Transmitter and receiver for an othogonally multiplexed QAM signal of a sampling rate N times that of PAM signals, comprising an N/2-point offset fourier transform processor
US4351983A (en) 1979-03-05 1982-09-28 International Business Machines Corp. Speech detector with variable threshold
JPS567213A (en) 1979-06-27 1981-01-24 Hitachi Ltd Noise eliminating circuit
US4425665A (en) 1981-09-24 1984-01-10 Advanced Micro Devices, Inc. FSK Voiceband modem using digital filters
US4399329A (en) 1981-11-25 1983-08-16 Rca Corporation Stereophonic bilingual signal processor
US4535472A (en) 1982-11-05 1985-08-13 At&T Bell Laboratories Adaptive bit allocator
US4618996A (en) 1984-04-24 1986-10-21 Avnet, Inc. Dual pilot phase lock loop for radio frequency transmission
US4679227A (en) 1985-05-20 1987-07-07 Telebit Corporation Ensemble modem structure for imperfect transmission media
US4630305A (en) 1985-07-01 1986-12-16 Motorola, Inc. Automatic gain selector for a noise suppression system
EP0226613B1 (en) 1985-07-01 1993-09-15 Motorola, Inc. Noise supression system
JPS6345933A (ja) 1986-04-15 1988-02-26 Nec Corp 秘話装置
JPH01106639A (ja) 1987-10-20 1989-04-24 Nec Corp 衛星通信地球局用送受装置
CA1291549C (en) 1987-11-06 1991-10-29 Wayne D. Grover Method and apparatus for self-healing and self-provisioning networks
US4931803A (en) 1988-03-31 1990-06-05 The United States Of America As Represented By The Secretary Of The Army Electronically steered phased array radar antenna
US4980897A (en) 1988-08-12 1990-12-25 Telebit Corporation Multi-channel trellis encoder/decoder
US5014306A (en) 1988-11-14 1991-05-07 Transtream, Inc. Voice and data telephone communication system and method
US5001724A (en) 1989-01-13 1991-03-19 Hewlett-Packard Company Method and apparatus for measuring phase accuracy and amplitude profile of a continuous-phase-modulated signal
JP2777194B2 (ja) 1989-05-29 1998-07-16 株式会社東芝 光伝送方式
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.
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
GB2244190A (en) 1990-05-17 1991-11-20 Orbitel Mobile Communications Receiver systems with equalisers
US5103459B1 (en) 1990-06-25 1999-07-06 Qualcomm Inc System and method for generating signal waveforms in a cdma cellular telephone system
US5568483A (en) 1990-06-25 1996-10-22 Qualcomm Incorporated Method and apparatus for the formatting of data for transmission
US5768613A (en) 1990-07-06 1998-06-16 Advanced Micro Devices, Inc. Computing apparatus configured for partitioned processing
US5091938B1 (en) 1990-08-06 1997-02-04 Nippon Denki Home Electronics Digital data cryptographic system
DE4111855C2 (de) 1991-04-11 1994-10-20 Inst Rundfunktechnik Gmbh Verfahren zum rundfunkmäßigen Übertragen eines digital codierten Datenstroms
BE1004813A3 (nl) 1991-05-08 1993-02-02 Bell Telephone Mfg Optische zender/ontvangerinrichting.
CA2066540C (en) 1991-06-13 1998-01-20 Edwin A. Kelley Multiple user digital receiving apparatus and method with time division multiplexing
US5192957A (en) 1991-07-01 1993-03-09 Motorola, Inc. Sequencer for a shared channel global positioning system receiver
US5216670A (en) 1991-07-03 1993-06-01 International Business Machines Corporation Message stripping protocol for a communication network
US5253270A (en) 1991-07-08 1993-10-12 Hal Communications Apparatus useful in radio communication of digital data using minimal bandwidth
US5233546A (en) 1991-08-14 1993-08-03 Hewlett-Packard Company Anti-alias filtering apparatus for frequency domain measurements
US5548819A (en) 1991-12-02 1996-08-20 Spectraplex, Inc. Method and apparatus for communication of information
JP3134455B2 (ja) 1992-01-29 2001-02-13 ソニー株式会社 高能率符号化装置及び方法
US5345599A (en) 1992-02-21 1994-09-06 The Board Of Trustees Of The Leland Stanford Junior University Increasing capacity in wireless broadcast systems using distributed transmission/directional reception (DTDR)
US5285474A (en) 1992-06-12 1994-02-08 The Board Of Trustees Of The Leland Stanford, Junior University Method for equalizing a multicarrier signal in a multicarrier communication system
JP3153933B2 (ja) 1992-06-16 2001-04-09 ソニー株式会社 データ符号化装置及び方法並びにデータ復号化装置及び方法
US5260968A (en) 1992-06-23 1993-11-09 The Regents Of The University Of California Method and apparatus for multiplexing communications signals through blind adaptive spatial filtering
EP0578313B1 (fr) 1992-07-08 1998-12-02 Laboratoires D'electronique Philips S.A.S. Codage enchaíné, pour la transmission OFDM
GB9218874D0 (en) 1992-09-07 1992-10-21 British Broadcasting Corp Improvements relating to the transmission of frequency division multiplex signals
US5603081A (en) 1993-11-01 1997-02-11 Telefonaktiebolaget Lm Ericsson Method for communicating in a wireless communication system
US5416767A (en) 1993-02-08 1995-05-16 U.S. Philips Corporation Method of transmitting a data stream, transmitter and receiver
ES2159540T3 (es) 1993-02-08 2001-10-16 Koninkl Philips Electronics Nv Receptor, con multiplexor de division ortogonal de frecuencia, con compensacion para retardos diferenciales.
JP3301555B2 (ja) 1993-03-30 2002-07-15 ソニー株式会社 無線受信装置
US5479447A (en) 1993-05-03 1995-12-26 The Board Of Trustees Of The Leland Stanford, Junior University Method and apparatus for adaptive, variable bandwidth, high-speed data transmission of a multicarrier signal over digital subscriber lines
ATE171023T1 (de) 1993-06-07 1998-09-15 Alsthom Cge Alcatel Signalisationspaket für kommunikationssystem mit modulierter referenz die einem zeitabhaengigen gesetz folgt
CA2121934A1 (en) 1993-06-14 1994-12-15 Gordon Bremer Simultaneous analog and digital communication with improved phase immunity
JPH0746217A (ja) 1993-07-26 1995-02-14 Sony Corp ディジタル復調装置
US5675572A (en) 1993-07-28 1997-10-07 Sony Corporation Orthogonal frequency division multiplex modulation apparatus and orthogonal frequency division multiplex demodulation apparatus
US5444697A (en) 1993-08-11 1995-08-22 The University Of British Columbia Method and apparatus for frame synchronization in mobile OFDM data communication
SE503548C2 (sv) 1993-10-01 1996-07-01 Telia Ab Anordning i OFDM fleranvändarsystem
JP3041175B2 (ja) 1993-11-12 2000-05-15 株式会社東芝 Ｏｆｄｍ同期復調回路
JP3074103B2 (ja) 1993-11-16 2000-08-07 株式会社東芝 Ｏｆｄｍ同期復調回路
CA2153170C (en) 1993-11-30 2000-12-19 At&T Corp. Transmitted noise reduction in communications systems
IL114182A (en) 1995-06-15 2003-03-12 Checkpoint Software Techn Ltd Method for controlling computer network security
US5559789A (en) 1994-01-31 1996-09-24 Matsushita Electric Industrial Co., Ltd. CDMA/TDD Radio Communication System
JPH07264214A (ja) 1994-02-07 1995-10-13 Fujitsu Ltd インターフェース装置
US5524001A (en) 1994-02-07 1996-06-04 Le Groupe Videotron Ltee Dynamic cable signal assembly
US5566209A (en) 1994-02-10 1996-10-15 Telefonaktiebolaget Lm Ericsson Transceiver algorithms of antenna arrays
US5414433A (en) 1994-02-16 1995-05-09 Raytheon Company Phased array radar antenna with two-stage time delay units
US5684920A (en) 1994-03-17 1997-11-04 Nippon Telegraph And Telephone Acoustic signal transform coding method and decoding method having a high efficiency envelope flattening method therein
JP2911773B2 (ja) 1994-03-18 1999-06-23 富士通株式会社 ディジタル多重無線受信装置
US5553064A (en) 1994-04-05 1996-09-03 Stanford Telecommunications, Inc. High speed bidirectional digital cable transmission system
DE69534066T2 (de) 1994-05-09 2006-04-13 Victor Company of Japan, Ltd., Yokohama Einstellung eines Referenzunterträgers bei Mehrträgerübertragung
JP2731722B2 (ja) 1994-05-26 1998-03-25 日本電気株式会社 クロック周波数自動制御方式及びそれに用いる送信装置と受信装置
FI96154C (fi) 1994-05-30 1996-05-10 Nokia Telecommunications Oy Menetelmä tilaajapäätelaitteiden synkronisoimiseksi, tukiasema sekä tilaajapäätelaite
US5625651A (en) 1994-06-02 1997-04-29 Amati Communications, Inc. Discrete multi-tone data transmission system using an overhead bus for synchronizing multiple remote units
US5557612A (en) 1995-01-20 1996-09-17 Amati Communications Corporation Method and apparatus for establishing communication in a multi-tone data transmission system
US5461640A (en) 1994-06-03 1995-10-24 Texas Instruments Incorporated Method and system for optimizing an equalizer in a data transmission system
US5844951A (en) 1994-06-10 1998-12-01 Northeastern University Method and apparatus for simultaneous beamforming and equalization
KR100326312B1 (ko) 1994-06-17 2002-06-22 윤종용 대역확산통신방식의동기식송신및수신장치
US5627863A (en) 1994-07-15 1997-05-06 Amati Communications Corporation Frame synchronization in multicarrier transmission systems
US5594757A (en) 1994-07-28 1997-01-14 Motorola, Inc. Method and apparatus for digital automatic frequency control
US5530703A (en) 1994-09-23 1996-06-25 3Com Corporation Remote communication server with automatic filtering
US6334219B1 (en) 1994-09-26 2001-12-25 Adc Telecommunications Inc. Channel selection for a hybrid fiber coax network
US5864683A (en) 1994-10-12 1999-01-26 Secure Computing Corporartion System for providing secure internetwork by connecting type enforcing secure computers to external network for limiting access to data based on user and process access rights
FR2726417A1 (fr) 1994-10-26 1996-05-03 Philips Electronique Lab Systeme de transmission et recepteur de signaux a repartition multiplexee de frequences orthogonales muni d'un dispositif de synchronisation de frequences
US5636246A (en) 1994-11-16 1997-06-03 Aware, Inc. Multicarrier transmission system
US5621455A (en) 1994-12-01 1997-04-15 Objective Communications, Inc. Video modem for transmitting video data over ordinary telephone wires
US5636250A (en) 1994-12-13 1997-06-03 Hitachi America, Ltd. Automatic VSB/QAM modulation recognition method and apparatus
US5682376A (en) 1994-12-20 1997-10-28 Matsushita Electric Industrial Co., Ltd. Method of transmitting orthogonal frequency division multiplex signal, and transmitter and receiver employed therefor
US5774450A (en) 1995-01-10 1998-06-30 Matsushita Electric Industrial Co., Ltd. Method of transmitting orthogonal frequency division multiplexing signal and receiver thereof
US5608725A (en) 1995-01-26 1997-03-04 Motorola, Inc. Method and apparatus of a communications system having a DMT infrastructure
US5539777A (en) 1995-01-26 1996-07-23 Motorola, Inc. Method and apparatus for a DMT receiver having a data de-formatter coupled directly to a constellation decoder
EP0725509A1 (en) 1995-01-31 1996-08-07 ALCATEL BELL Naamloze Vennootschap Frequency division multiple access (FDMA) dedicated transmission system, transmitter and receiver used in such a transmission system
JP3130752B2 (ja) 1995-02-24 2001-01-31 株式会社東芝 Ｏｆｄｍ伝送受信方式及び送受信装置
SE514986C2 (sv) 1995-03-01 2001-05-28 Telia Ab Metod och anordning för synkronisering vid OFDM-system
US5708662A (en) 1995-04-07 1998-01-13 Casio Computer Co., Ltd. Transmission method and receiving apparatus of emergency information which is frequency-multiplexed on an FM broadcast radio wave
JP2778513B2 (ja) 1995-04-14 1998-07-23 日本電気株式会社 エコーキャンセラ装置
US5521908A (en) 1995-04-20 1996-05-28 Tellabs Operations Inc. Method and apparatus for providing reduced complexity echo cancellation in a multicarrier communication system
GB9510127D0 (en) 1995-05-20 1995-08-02 West End System Corp CATV Data transmission system
US6018317A (en) 1995-06-02 2000-01-25 Trw Inc. Cochannel signal processing system
US5726978A (en) 1995-06-22 1998-03-10 Telefonaktiebolaget L M Ericsson Publ. Adaptive channel allocation in a frequency division multiplexed system
ZA965340B (en) 1995-06-30 1997-01-27 Interdigital Tech Corp Code division multiple access (cdma) communication system
DE69528974T2 (de) 1995-07-11 2003-08-28 Alcatel, Paris Kapazitätszuweisung in einem Mehrträgersystem
US5790516A (en) 1995-07-14 1998-08-04 Telefonaktiebolaget Lm Ericsson Pulse shaping for data transmission in an orthogonal frequency division multiplexed system
US5867764A (en) 1995-09-01 1999-02-02 Cable Television Laboratories, Inc. Hybrid return gate system in a bidirectional cable network
US5815488A (en) 1995-09-28 1998-09-29 Cable Television Laboratories, Inc. Multiple user access method using OFDM
US5790554A (en) 1995-10-04 1998-08-04 Bay Networks, Inc. Method and apparatus for processing data packets in a network
EP0768778A1 (en) 1995-10-11 1997-04-16 ALCATEL BELL Naamloze Vennootschap Method for transmission line impulse response equalisation and a device to perform this method
US6125150A (en) 1995-10-30 2000-09-26 The Board Of Trustees Of The Leland Stanford, Junior University Transmission system using code designed for transmission with periodic interleaving
US5828710A (en) 1995-12-11 1998-10-27 Delco Electronics Corporation AFC frequency synchronization network
US5790784A (en) 1995-12-11 1998-08-04 Delco Electronics Corporation Network for time synchronizing a digital information processing system with received digital information
US5790615A (en) 1995-12-11 1998-08-04 Delco Electronics Corporation Digital phase-lock loop network
US6009130A (en) 1995-12-28 1999-12-28 Motorola, Inc. Multiple access digital transmitter and receiver
KR970068393A (ko) 1996-03-11 1997-10-13 김광호 이산 다중 톤 시스템 수신단의 샘플링 클럭 복원 장치 및 방법
FI961164A (fi) 1996-03-13 1997-09-14 Nokia Technology Gmbh Menetelmä kanavavirheiden korjaamiseksi digitaalisessa tietoliikennejärjestelmässä
FI100150B (fi) 1996-03-19 1997-09-30 Nokia Telecommunications Oy Vastaanottomenetelmä ja vastaanotin
US6055362A (en) 1996-03-29 2000-04-25 Bull Hn Information Systems Inc. Apparatus for phase synchronizing clock signals in a fully redundant computer system
ES2251004T3 (es) 1996-04-04 2006-04-16 Siemens Aktiengesellschaft Procedimiento para parametrizacion de un equipo de receptor, asi como el correspondiente equipo receptor y estacion de radio.
US5862007A (en) 1996-04-18 1999-01-19 Samsung Electronics Co., Ltd. Method and apparatus for removing baseline shifts in a read signal using filters
US6035000A (en) 1996-04-19 2000-03-07 Amati Communications Corporation Mitigating radio frequency interference in multi-carrier transmission systems
US6044107A (en) 1996-05-09 2000-03-28 Texas Instruments Incorporated Method for interoperability of a T1E1.4 compliant ADSL modem and a simpler modem
US6002722A (en) 1996-05-09 1999-12-14 Texas Instruments Incorporated Multimode digital modem
US5949796A (en) 1996-06-19 1999-09-07 Kumar; Derek D. In-band on-channel digital broadcasting method and system
US6028891A (en) 1996-06-25 2000-02-22 Analog Devices, Inc. Asymmetric digital subscriber loop transceiver and method
WO1998000953A1 (en) 1996-06-28 1998-01-08 Philips Electronics N.V. Method for simplifying the demodulation in multiple carrier transmission system
US5771025A (en) 1996-07-02 1998-06-23 Omnipoint Corporation Folded mono-bow antennas and antenna systems for use in cellular and other wireless communication systems
JP4307557B2 (ja) 1996-07-03 2009-08-05 ブリティッシュ・テレコミュニケーションズ・パブリック・リミテッド・カンパニー 音声活性度検出器
US6088386A (en) 1996-07-15 2000-07-11 Alcatel Transmitter with phase rotor, modulator/demodulator, communication system and method performed thereby
US5918019A (en) 1996-07-29 1999-06-29 Cisco Technology, Inc. Virtual dial-up protocol for network communication
US6073176A (en) 1996-07-29 2000-06-06 Cisco Technology, Inc. Dynamic bidding protocol for conducting multilink sessions through different physical termination points
US6075777A (en) 1996-08-21 2000-06-13 Lucent Technologies Inc. Network flow framework for online dynamic channel allocation
US6771590B1 (en) 1996-08-22 2004-08-03 Tellabs Operations, Inc. Communication system clock synchronization techniques
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
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
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
US6122246A (en) 1996-08-22 2000-09-19 Tellabs Operations, Inc. Apparatus and method for clock synchronization in a multi-point OFDM/DMT digital communications system
US6108349A (en) 1996-08-22 2000-08-22 Tellabs Operations, Inc. Method and apparatus for registering remote service units in a multipoint communication system
US6285654B1 (en) 1996-08-22 2001-09-04 Tellabs Operations, Inc. Apparatus and method for symbol alignment in a multi-point OFDM or DMT digital communications 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
US6141317A (en) 1996-08-22 2000-10-31 Tellabs Operations, Inc. Apparatus and method for bandwidth management in a multi-point OFDM/DMT digital communications system
AU4238697A (en) 1996-08-29 1998-03-19 Cisco Technology, Inc. Spatio-temporal processing for communication
US5841813A (en) 1996-09-04 1998-11-24 Lucent Technologies Inc. Digital communications system using complementary codes and amplitude modulation
US5850444A (en) 1996-09-09 1998-12-15 Telefonaktienbolaget L/M Ericsson (Publ) Method and apparatus for encrypting radio traffic in a telecommunications network
US5995568A (en) 1996-10-28 1999-11-30 Motorola, Inc. Method and apparatus for performing frame synchronization in an asymmetrical digital subscriber line (ADSL) system
US5864546A (en) 1996-11-05 1999-01-26 Worldspace International Network, Inc. System for formatting broadcast data for satellite transmission and radio reception
US6075816A (en) 1996-11-27 2000-06-13 Lucent Technologies, Inc. Windowing technique for blind equalization
US5919137A (en) 1996-12-04 1999-07-06 Acuson Corporation Ultrasonic diagnostic imaging system with programmable acoustic signal processor
US5909465A (en) 1996-12-05 1999-06-01 Ericsson Inc. Method and apparatus for bidirectional demodulation of digitally modulated signals
JP3308835B2 (ja) 1996-12-06 2002-07-29 株式会社日立製作所 無線通信システム
US6122260A (en) 1996-12-16 2000-09-19 Civil Telecommunications, Inc. Smart antenna CDMA wireless communication system
US5984514A (en) 1996-12-20 1999-11-16 Analog Devices, Inc. Method and apparatus for using minimal and optimal amount of SRAM delay line storage in the calculation of an X Y separable mallat wavelet transform
US6320902B1 (en) 1996-12-23 2001-11-20 Texas Instruments Incorporated Time domain equalizer for ADSL
US6072782A (en) 1996-12-23 2000-06-06 Texas Instruments Incorporated Efficient echo cancellation for DMT MDSL
US6055575A (en) 1997-01-28 2000-04-25 Ascend Communications, Inc. Virtual private network system and method
US6370156B2 (en) 1997-01-31 2002-04-09 Alcatel Modulation/demodulation of a pilot carrier, means and method to perform the modulation/demodulation
US5933421A (en) 1997-02-06 1999-08-03 At&T Wireless Services Inc. Method for frequency division duplex communications
US6128276A (en) 1997-02-24 2000-10-03 Radix Wireless, Inc. Stacked-carrier discrete multiple tone communication technology and combinations with code nulling, interference cancellation, retrodirective communication and adaptive antenna arrays
US6148024A (en) 1997-03-04 2000-11-14 At&T Corporation FFT-based multitone DPSK modem
US6272108B1 (en) 1997-03-05 2001-08-07 Paradyne Corporation Apparatus and method to allow a frame check sequence to determine the updating of adaptive receiver parameters of a high speed communication device
US5983078A (en) 1997-03-18 1999-11-09 Cellularvision Technology & Telecommunications, Lp Channel spacing for distortion reduction
US5912920A (en) 1997-03-27 1999-06-15 Marchok; Daniel J. Point-to multipoint digital communications system facilitating use of a reduced complexity receiver at each of the multipoint sites
US5937014A (en) 1997-03-27 1999-08-10 Telefonaktiebolaget Lm Ericsson Self-synchronizing equalization techniques and systems
US6212175B1 (en) 1997-04-22 2001-04-03 Telxon Corporation Method to sustain TCP connection
US6104930A (en) 1997-05-02 2000-08-15 Nortel Networks Corporation Floating transceiver assignment for cellular radio
US6353629B1 (en) 1997-05-12 2002-03-05 Texas Instruments Incorporated Poly-path time domain equalization
FI105063B (fi) 1997-05-16 2000-05-31 Nokia Networks Oy Menetelmä lähetyssuunnan määrittämiseksi ja radiojärjestelmä
US6069917A (en) 1997-05-23 2000-05-30 Lucent Technologies Inc. Blind training of a decision feedback equalizer
US6134591A (en) 1997-06-18 2000-10-17 Client/Server Technologies, Inc. Network security and integration method and system
US6073179A (en) 1997-06-30 2000-06-06 Integrated Telecom Express Program for controlling DMT based modem using sub-channel selection to achieve scaleable data rate based on available signal processing resources
US6466557B1 (en) 1997-07-14 2002-10-15 Sanyo Electric Co., Ltd. Transmission channel allocation method and allocation apparatus
US6212635B1 (en) 1997-07-18 2001-04-03 David C. Reardon Network security system allowing access and modification to a security subsystem after initial installation when a master token is in place
US6061796A (en) 1997-08-26 2000-05-09 V-One Corporation Multi-access virtual private network
BR9812816A (pt) 1997-09-15 2000-08-08 Adaptive Telecom Inc Processos para comunicação sem fio, e para eficientemente determinar na estação base um canal espacial da unidade móvel em um sistema de comunicação sem fio, e, estação base de cdma
US6097763A (en) 1997-10-31 2000-08-01 Pairgain Technologies, Inc. MMSE equalizers for DMT systems with cross talk
JP3132448B2 (ja) 1997-12-19 2001-02-05 日本電気株式会社 適応等化器タップ係数のトレーニング方法およびトレーニング回路
JPH11203248A (ja) 1998-01-16 1999-07-30 Nissin Electric Co Ltd 認証装置、および、そのプログラムを記録した記録媒体
US6023674A (en) 1998-01-23 2000-02-08 Telefonaktiebolaget L M Ericsson Non-parametric voice activity detection
US6079020A (en) 1998-01-27 2000-06-20 Vpnet Technologies, Inc. Method and apparatus for managing a virtual private network
US6047025A (en) 1998-02-13 2000-04-04 Motorola, Inc. Method and apparatus for equallization in an asymmetric digital aubscriber line communications system
KR100291592B1 (ko) 1998-02-24 2001-07-12 조정남 다중주파수채널확산대역이동통신시스템에서의채널할당방법
US6513117B2 (en) 1998-03-04 2003-01-28 Gemstar Development Corporation Certificate handling for digital rights management system
US7032242B1 (en) 1998-03-05 2006-04-18 3Com Corporation Method and system for distributed network address translation with network security features
US6185251B1 (en) 1998-03-27 2001-02-06 Telefonaktiebolaget Lm Ericsson Equalizer for use in multi-carrier modulation systems
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
US6526105B1 (en) 1998-05-29 2003-02-25 Tellabs, Operations, Inc. Time domain equalization for discrete multi-tone systems
CA2327678C (en) 1998-04-03 2007-12-18 Tellabs Operations, Inc. Filter for impulse response shortening, with addition spectral constraints, for multicarrier transmission
US6154839A (en) 1998-04-23 2000-11-28 Vpnet Technologies, Inc. Translating packet addresses based upon a user identifier
US6266367B1 (en) 1998-05-28 2001-07-24 3Com Corporation Combined echo canceller and time domain equalizer
US6557037B1 (en) 1998-05-29 2003-04-29 Sun Microsystems System and method for easing communications between devices connected respectively to public networks such as the internet and to private networks by facilitating resolution of human-readable addresses
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
US6108610A (en) 1998-10-13 2000-08-22 Noise Cancellation Technologies, Inc. Method and system for updating noise estimates during pauses in an information signal
US6279022B1 (en) 1998-11-13 2001-08-21 Integrated Telecom Express, Inc. System and method for detecting symbol boundary in multi-carrier transmission systems
US6353636B1 (en) 1998-12-23 2002-03-05 Nortel Networks Limited Symbol alignment method
US6584096B1 (en) 1998-12-30 2003-06-24 Nortel Networks Limited Method and apparatus for connecting a home network to the internet
US6654429B1 (en) 1998-12-31 2003-11-25 At&T Corp. Pilot-aided channel estimation for OFDM in wireless systems
EP1141948B1 (en) 1999-01-07 2007-04-04 Tellabs Operations, Inc. Method and apparatus for adaptively suppressing noise
US6487252B1 (en) 1999-01-29 2002-11-26 Motorola, Inc. Wireless communication system and method for synchronization
DE60045546D1 (de) 1999-02-19 2011-03-03 Nokia Siemens Networks Oy Netzwerk-anordnung für kommunikation
US6347237B1 (en) 1999-03-16 2002-02-12 Superconductor Technologies, Inc. High temperature superconductor tunable filter
JP2001134534A (ja) 1999-11-08 2001-05-18 Ntt Communications Kk 認証代行方法、認証代行サービスシステム、認証代行サーバ装置及びクライアント装置
US7058572B1 (en) 2000-01-28 2006-06-06 Nortel Networks Limited Reducing acoustic noise in wireless and landline based telephony
JP3570327B2 (ja) 2000-02-22 2004-09-29 日本電気株式会社 プロキシ暗号通信システム及び方法並びにプログラムを記録した記録媒体
KR100847596B1 (ko) 2000-03-02 2008-07-21 소니 가부시끼 가이샤 통신망 시스템, 게이트웨이, 데이터 통신방법과 프로그램제공매체
US6529868B1 (en) 2000-03-28 2003-03-04 Tellabs Operations, Inc. Communication system noise cancellation power signal calculation techniques
JP2002077274A (ja) 2000-08-31 2002-03-15 Toshiba Corp ホームゲートウェイ装置、アクセスサーバ装置及び通信方法
JP3693588B2 (ja) * 2000-11-01 2005-09-07 富士通株式会社 エコー抑制システム
US6765881B1 (en) 2000-12-06 2004-07-20 Covad Communications Group, Inc. Virtual L2TP/VPN tunnel network and spanning tree-based method for discovery of L2TP/VPN tunnels and other layer-2 services
US7251824B2 (en) 2000-12-19 2007-07-31 Intel Corporation Accessing a private network
KR100708467B1 (ko) 2001-02-03 2007-04-18 삼성전자주식회사 홈네트워크내의 기기에 서비스를 제공하는 시스템 및 그방법
US7617099B2 (en) 2001-02-12 2009-11-10 FortMedia Inc. Noise suppression by two-channel tandem spectrum modification for speech signal in an automobile
US7471734B2 (en) 2001-04-26 2008-12-30 Motorola, Inc. Space-time transmit diversity scheme for time-dispersive propagation media
US7010608B2 (en) 2001-09-28 2006-03-07 Intel Corporation System and method for remotely accessing a home server while preserving end-to-end security
JP3359340B1 (ja) 2002-01-23 2002-12-24 株式会社椿本チエイン 伝動装置用可動ガイド
US20040240669A1 (en) 2002-02-19 2004-12-02 James Kempf Securing neighbor discovery using address based keys
US6971017B2 (en) 2002-04-16 2005-11-29 Xerox Corporation Ad hoc secure access to documents and services
US7173965B2 (en) * 2003-02-03 2007-02-06 Fujitsu Limited Equalizing a signal for transmission
US7840993B2 (en) 2005-05-04 2010-11-23 Tricipher, Inc. Protecting one-time-passwords against man-in-the-middle attacks
US20070070960A1 (en) 2005-09-27 2007-03-29 Amit Barak Device, system, and method of multi-entity wireless communication adapter having a multi-channel mode
CN101965698B (zh) * 2009-03-27 2014-11-05 富士通株式会社 色散均衡装置和方法以及数字相干光接收机
US8300758B2 (en) * 2010-01-28 2012-10-30 Quantum Corporation Adaptive filter using shifted reverse interpolation
EP2559238B1 (en) * 2010-04-13 2015-06-03 Fraunhofer-Gesellschaft zur Förderung der angewandten Forschung e.V. Adaptive image filtering method and apparatus
WO2012145571A1 (en) * 2011-04-22 2012-10-26 Draeger Medical Systems, Inc. Adaptive notch filter

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