WO1997027550A3 - Communication system with multicarrier telephony transport - Google Patents

Communication system with multicarrier telephony transport Download PDF

Info

Publication number
WO1997027550A3
WO1997027550A3 PCT/US1997/001444 US9701444W WO9727550A3 WO 1997027550 A3 WO1997027550 A3 WO 1997027550A3 US 9701444 W US9701444 W US 9701444W WO 9727550 A3 WO9727550 A3 WO 9727550A3
Authority
WO
WIPO (PCT)
Prior art keywords
telephony
control data
distribution network
frequency bandwidth
hybrid fiber
Prior art date
Application number
PCT/US1997/001444
Other languages
French (fr)
Other versions
WO1997027550A2 (en
WO1997027550A9 (en
Inventor
J Dapper Mark
J Geile Michael
J Hill Terrance
A Roberts Harold
D Anderson Brian
Brede Jeffrey
S Wadman Mark
J Kirscht Robert
J Herrmann James
J Fort Michael
P Buska Steven
Solum Jeff
Lea Enfield Debra
Berg Darrell
Smigelski Thomas
C Tucker Thomas
Hall Joe
M Logajan John
Boualouang Somway
Lou Heng
D Elpers Mark
Downs Matt
Ferris Tammy
Opoczynski Adam
S Russell David
G Nelson Calvin
R Samant Niranjan
F Chiappetta Joseph
Sarnikowski Scott
Original Assignee
Adc Telecommunications 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 US08/673,002 external-priority patent/US6334219B1/en
Application filed by Adc Telecommunications Inc filed Critical Adc Telecommunications Inc
Priority to IL12547297A priority Critical patent/IL125472A/en
Priority to CA002205986A priority patent/CA2205986C/en
Priority to EP97903135A priority patent/EP0882268A2/en
Priority to AU17117/97A priority patent/AU727079B2/en
Publication of WO1997027550A2 publication Critical patent/WO1997027550A2/en
Publication of WO1997027550A9 publication Critical patent/WO1997027550A9/en
Publication of WO1997027550A3 publication Critical patent/WO1997027550A3/en
Priority to IL196383A priority patent/IL196383A/en

Links

Classifications

    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04HBROADCAST COMMUNICATION
    • H04H20/00Arrangements for broadcast or for distribution combined with broadcast
    • H04H20/65Arrangements characterised by transmission systems for broadcast
    • H04H20/76Wired systems
    • H04H20/77Wired systems using carrier waves
    • H04H20/78CATV [Community Antenna Television] systems
    • GPHYSICS
    • G06COMPUTING; CALCULATING OR COUNTING
    • G06FELECTRIC DIGITAL DATA PROCESSING
    • G06F17/00Digital computing or data processing equipment or methods, specially adapted for specific functions
    • G06F17/10Complex mathematical operations
    • G06F17/14Fourier, Walsh or analogous domain transformations, e.g. Laplace, Hilbert, Karhunen-Loeve, transforms
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04HBROADCAST COMMUNICATION
    • H04H20/00Arrangements for broadcast or for distribution combined with broadcast
    • H04H20/65Arrangements characterised by transmission systems for broadcast
    • H04H20/76Wired systems
    • H04H20/77Wired systems using carrier waves
    • H04H20/81Wired systems using carrier waves combined with telephone network over which the broadcast is continuously available
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04HBROADCAST COMMUNICATION
    • H04H60/00Arrangements for broadcast applications with a direct linking to broadcast information or broadcast space-time; Broadcast-related systems
    • H04H60/76Arrangements characterised by transmission systems other than for broadcast, e.g. the Internet
    • H04H60/81Arrangements characterised by transmission systems other than for broadcast, e.g. the Internet characterised by the transmission system itself
    • H04H60/93Wired transmission systems
    • H04H60/96CATV systems
    • H04H60/97CATV systems using uplink of the CATV systems
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04LTRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L1/00Arrangements for detecting or preventing errors in the information received
    • H04L1/004Arrangements for detecting or preventing errors in the information received by using forward error control
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04LTRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L1/00Arrangements for detecting or preventing errors in the information received
    • H04L1/004Arrangements for detecting or preventing errors in the information received by using forward error control
    • H04L1/0045Arrangements at the receiver end
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04LTRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L1/00Arrangements for detecting or preventing errors in the information received
    • H04L1/004Arrangements for detecting or preventing errors in the information received by using forward error control
    • H04L1/0056Systems characterized by the type of code used
    • H04L1/0057Block codes
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04LTRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L25/00Baseband systems
    • H04L25/02Details ; arrangements for supplying electrical power along data transmission lines
    • H04L25/03Shaping networks in transmitter or receiver, e.g. adaptive shaping networks
    • H04L25/03828Arrangements for spectral shaping; Arrangements for providing signals with specified spectral properties
    • H04L25/03866Arrangements for spectral shaping; Arrangements for providing signals with specified spectral properties using scrambling
    • 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
    • H04L27/2614Peak power aspects
    • 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
    • H04L27/2627Modulators
    • H04L27/2634Inverse fast Fourier transform [IFFT] or inverse discrete Fourier transform [IDFT] modulators in combination with other circuits for modulation
    • 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
    • H04L27/26534Pulse-shaped multi-carrier, i.e. not using rectangular window
    • H04L27/26538Filtering per subband or per resource block, e.g. universal filtered multicarrier [UFMC] or generalized frequency division multiplexing [GFDM]
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04LTRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L27/00Modulated-carrier systems
    • H04L27/32Carrier systems characterised by combinations of two or more of the types covered by groups H04L27/02, H04L27/10, H04L27/18 or H04L27/26
    • H04L27/34Amplitude- and phase-modulated carrier systems, e.g. quadrature-amplitude modulated carrier systems
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04LTRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L5/00Arrangements affording multiple use of the transmission path
    • H04L5/02Channels characterised by the type of signal
    • H04L5/023Multiplexing of multicarrier modulation signals
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04LTRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L5/00Arrangements affording multiple use of the transmission path
    • H04L5/14Two-way operation using the same type of signal, i.e. duplex
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04LTRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L5/00Arrangements affording multiple use of the transmission path
    • H04L5/14Two-way operation using the same type of signal, i.e. duplex
    • H04L5/143Two-way operation using the same type of signal, i.e. duplex for modulated signals
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04MTELEPHONIC COMMUNICATION
    • H04M7/00Arrangements for interconnection between switching centres
    • H04M7/006Networks other than PSTN/ISDN providing telephone service, e.g. Voice over Internet Protocol (VoIP), including next generation networks with a packet-switched transport layer
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04NPICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N21/00Selective content distribution, e.g. interactive television or video on demand [VOD]
    • H04N21/20Servers specifically adapted for the distribution of content, e.g. VOD servers; Operations thereof
    • H04N21/23Processing of content or additional data; Elementary server operations; Server middleware
    • H04N21/238Interfacing the downstream path of the transmission network, e.g. adapting the transmission rate of a video stream to network bandwidth; Processing of multiplex streams
    • H04N21/2383Channel coding or modulation of digital bit-stream, e.g. QPSK modulation
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04NPICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N21/00Selective content distribution, e.g. interactive television or video on demand [VOD]
    • H04N21/40Client devices specifically adapted for the reception of or interaction with content, e.g. set-top-box [STB]; Operations thereof
    • H04N21/43Processing of content or additional data, e.g. demultiplexing additional data from a digital video stream; Elementary client operations, e.g. monitoring of home network or synchronising decoder's clock; Client middleware
    • H04N21/438Interfacing the downstream path of the transmission network originating from a server, e.g. retrieving MPEG packets from an IP network
    • H04N21/4382Demodulation or channel decoding, e.g. QPSK demodulation
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04NPICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N7/00Television systems
    • H04N7/16Analogue secrecy systems; Analogue subscription systems
    • H04N7/173Analogue secrecy systems; Analogue subscription systems with two-way working, e.g. subscriber sending a programme selection signal
    • H04N7/17309Transmission or handling of upstream communications
    • 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
    • H04L27/2602Signal structure
    • 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
    • H04L27/26524Fast Fourier transform [FFT] or discrete Fourier transform [DFT] demodulators in combination with other circuits for demodulation
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04MTELEPHONIC COMMUNICATION
    • H04M9/00Arrangements for interconnection not involving centralised switching
    • H04M9/02Arrangements for interconnection not involving centralised switching involving a common line for all parties
    • H04M9/022Multiplex systems
    • H04M9/027Frequency division multiplex systems

Abstract

The communication system includes a hybrid fiber/coax distribution network. A head end provides for downstream transmission of telephony and control data in a first frequency bandwidth over the hybrid fiber/coax distribution network and reception of upstream telephony and control data in a second frequency bandwidth over the hybrid fiber/coax distribution network. The head end includes a head end multicarrier modem for modulating downstream telephony information on a plurality of orthogonal carriers in the first frequency bandwidth and demodulating upstream telephony information modulated on a plurality of orthogonal carriers in the second frequency bandwidth. The system includes service units, operatively connected to the hybrid fiber/coax distribution network for upstream transmission of telephony and control data and for receipt of the downstream control data and telephony. Also provided is a method and apparatus for performing a Fast Fourier Transform (FFT).
PCT/US1997/001444 1996-01-24 1997-01-24 Communication system with multicarrier telephony transport WO1997027550A2 (en)

Priority Applications (5)

Application Number Priority Date Filing Date Title
IL12547297A IL125472A (en) 1996-01-24 1997-01-24 Communication system with multicarrier telephony transport
CA002205986A CA2205986C (en) 1996-01-24 1997-01-24 Communication system with multicarrier telephony transport
EP97903135A EP0882268A2 (en) 1996-01-24 1997-01-24 Communication system with multicarrier telephony transport
AU17117/97A AU727079B2 (en) 1996-01-24 1997-01-24 Communication system with multicarrier telephony transport
IL196383A IL196383A (en) 1996-01-24 2009-01-07 Communication system with multicarrier telephony transport

Applications Claiming Priority (6)

Application Number Priority Date Filing Date Title
US1049796P 1996-01-24 1996-01-24
US1050696P 1996-01-24 1996-01-24
US60/010,506 1996-01-24
US60/010,497 1996-01-24
US08/673,002 US6334219B1 (en) 1994-09-26 1996-06-28 Channel selection for a hybrid fiber coax network
US08/673,002 1996-06-28

Publications (3)

Publication Number Publication Date
WO1997027550A2 WO1997027550A2 (en) 1997-07-31
WO1997027550A9 WO1997027550A9 (en) 1997-10-09
WO1997027550A3 true WO1997027550A3 (en) 1998-03-05

Family

ID=27359246

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/US1997/001444 WO1997027550A2 (en) 1996-01-24 1997-01-24 Communication system with multicarrier telephony transport

Country Status (3)

Country Link
AU (1) AU727079B2 (en)
IL (1) IL125472A (en)
WO (1) WO1997027550A2 (en)

Families Citing this family (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6097721A (en) * 1997-08-04 2000-08-01 Next Level Communications Method and apparatus for identifying signals for a set of communication devices in a signal stream having signals for a number of different sets of communication devices
DE19831942A1 (en) * 1998-07-16 2000-01-20 Alcatel Sa Receiver of a telecommunication network
US6636525B1 (en) * 1998-08-19 2003-10-21 International Business Machines Corporation Destination dependent coding for discrete multi-tone modulation
US7336680B2 (en) * 2001-09-18 2008-02-26 Scientific-Atlanta, Inc. Multi-carrier frequency-division multiplexing (FDM) architecture for high speed digital service
JP5493459B2 (en) * 2009-05-08 2014-05-14 ソニー株式会社 Communication apparatus and communication method
EP2572458B1 (en) * 2010-05-17 2016-04-06 INRADIOS integrated radio solutions GmbH Method for the parallel processing of data streams by means of satellite communication connections
WO2021127116A1 (en) 2019-12-19 2021-06-24 Antronix, Inc. Distributed access architecture system for catv
CN113726445B (en) * 2021-07-12 2022-11-18 网络通信与安全紫金山实验室 Modulation signal generation method and terahertz wireless transmission method and system

Citations (39)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3916379A (en) * 1974-04-08 1975-10-28 Honeywell Inf Systems Error-rate monitoring unit in a communication system
EP0080782A1 (en) * 1981-12-02 1983-06-08 Philips Electronics Uk Limited Signal transmission system
US4395768A (en) * 1978-05-02 1983-07-26 U.S. Philips Corporation Error correction device for data transfer system
DE3311386A1 (en) * 1983-03-29 1984-10-31 Telefonbau Und Normalzeit Gmbh, 6000 Frankfurt Method for operating terminals of a digital subscriber connection
US4512033A (en) * 1982-11-29 1985-04-16 C-Cor Labs, Inc. Remote level adjustment system for use in a multi-terminal communications system
US4617656A (en) * 1982-12-22 1986-10-14 Tokyo Shibaura Denki Kabushiki Kaisha Information transmission system with modems coupled to a common communication medium
US4618955A (en) * 1983-02-25 1986-10-21 U.S. Philips Corporation Digital data transmission system
US4648123A (en) * 1982-11-29 1987-03-03 C-Cor Labs, Inc. Remote level measurement system for use in a multi-terminal communications system
US4651320A (en) * 1984-12-24 1987-03-17 American Telephone And Telegraph Company Inband coding of secondary data
US4677686A (en) * 1983-06-10 1987-06-30 Applied Spectrum Technologies, Inc. Passive transmission of data over cable TV systems
US4707832A (en) * 1985-04-10 1987-11-17 Harris Corporation Switched point-to-point local area network control mechanism
EP0282298A2 (en) * 1987-03-13 1988-09-14 Space Systems / Loral, Inc. Method and apparatus for combining encoding and modulation
US4791590A (en) * 1985-11-19 1988-12-13 Cornell Research Foundation, Inc. High performance signal processor
EP0325331A2 (en) * 1988-01-22 1989-07-26 Philips Electronics Uk Limited Signal distribution network system
EP0329023A2 (en) * 1988-02-16 1989-08-23 Array Microsystems, Inc. Apparatus for performing digital signal processing including fast fourier transform radix-4 butterfly computations
EP0392723A2 (en) * 1989-04-10 1990-10-17 AT&T Corp. Data communications apparatus and method
US4996706A (en) * 1986-12-02 1991-02-26 Samsung Electronics Co., Ltd. Method of controlling the electric power supplied to a modem
US5124980A (en) * 1989-03-20 1992-06-23 Maki Gerald G Synchronous multiport digital 2-way communications network using T1 PCM on a CATV cable
US5134464A (en) * 1990-11-16 1992-07-28 North American Philips Corporation Method and apparatus for the transmission and reception of a multicarrier digital television signal
WO1992018940A1 (en) * 1991-04-18 1992-10-29 Sharp Kabushiki Kaisha Quasi radix-16 processor and method
US5291289A (en) * 1990-11-16 1994-03-01 North American Philips Corporation Method and apparatus for transmission and reception of a digital television signal using multicarrier modulation
EP0584820A1 (en) * 1992-08-27 1994-03-02 Nec Corporation Access system
US5315583A (en) * 1991-04-11 1994-05-24 Usa Digital Radio Method and apparatus for digital audio broadcasting and reception
EP0599632A2 (en) * 1992-11-27 1994-06-01 Commonwealth Scientific And Industrial Research Organisation Apparatus and methods for wireless communications
US5365525A (en) * 1992-11-27 1994-11-15 Motorola, Inc. Method for reducing bandwidth of a wireline communication path
US5371548A (en) * 1993-07-09 1994-12-06 Cable Television Laboratories, Inc. System for transmission of digital data using orthogonal frequency division multiplexing
EP0630133A2 (en) * 1993-06-14 1994-12-21 AT&T Corp. Modem applications of simultaneous analog and digital communication
WO1994029983A1 (en) * 1993-06-10 1994-12-22 Adc Telecommunications, Inc. Performance monitoring and failure isolation in a point-to-multipoint communication network
EP0637181A1 (en) * 1993-07-27 1995-02-01 Siemens Aktiengesellschaft Radio system with frequency optimization
CA2113330A1 (en) * 1993-08-17 1995-02-18 John M. Cioffi Multicarrier Modulation Transmission System with Variable Delay
WO1995008228A1 (en) * 1993-09-17 1995-03-23 Scientific-Atlanta, Inc. Broadband communications system
EP0647043A2 (en) * 1993-10-04 1995-04-05 AT&T Corp. Data-driven autorating for use in data communications
US5425050A (en) * 1992-10-23 1995-06-13 Massachusetts Institute Of Technology Television transmission system using spread spectrum and orthogonal frequency-division multiplex
EP0669749A1 (en) * 1994-02-24 1995-08-30 Multi-Tech Systems Inc Noncompressed voice and data communication over modem for a computer-based multifunction personal communications system
EP0673131A2 (en) * 1994-03-15 1995-09-20 Kabushiki Kaisha Toshiba Hierarchical OFDM system
US5471474A (en) * 1993-06-04 1995-11-28 Lancity Corporation Communications highway network system
WO1995034168A2 (en) * 1994-06-09 1995-12-14 Philips Electronics N.V. A two-way multiple access communication system, and a central station and a user station for use in such a system
WO1995034149A1 (en) * 1994-06-02 1995-12-14 Amati Communications Corporation Method and apparatus for coordinating multi-point-to-point communications in a multi-tone data transmission system
EP0689313A2 (en) * 1994-05-26 1995-12-27 Nec Corporation AFC for OFDM using windowing

Patent Citations (40)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3916379A (en) * 1974-04-08 1975-10-28 Honeywell Inf Systems Error-rate monitoring unit in a communication system
US4395768A (en) * 1978-05-02 1983-07-26 U.S. Philips Corporation Error correction device for data transfer system
EP0080782A1 (en) * 1981-12-02 1983-06-08 Philips Electronics Uk Limited Signal transmission system
US4512033A (en) * 1982-11-29 1985-04-16 C-Cor Labs, Inc. Remote level adjustment system for use in a multi-terminal communications system
US4648123A (en) * 1982-11-29 1987-03-03 C-Cor Labs, Inc. Remote level measurement system for use in a multi-terminal communications system
US4617656A (en) * 1982-12-22 1986-10-14 Tokyo Shibaura Denki Kabushiki Kaisha Information transmission system with modems coupled to a common communication medium
US4618955A (en) * 1983-02-25 1986-10-21 U.S. Philips Corporation Digital data transmission system
DE3311386A1 (en) * 1983-03-29 1984-10-31 Telefonbau Und Normalzeit Gmbh, 6000 Frankfurt Method for operating terminals of a digital subscriber connection
US4677686A (en) * 1983-06-10 1987-06-30 Applied Spectrum Technologies, Inc. Passive transmission of data over cable TV systems
US4651320A (en) * 1984-12-24 1987-03-17 American Telephone And Telegraph Company Inband coding of secondary data
US4707832A (en) * 1985-04-10 1987-11-17 Harris Corporation Switched point-to-point local area network control mechanism
US4791590A (en) * 1985-11-19 1988-12-13 Cornell Research Foundation, Inc. High performance signal processor
US4996706A (en) * 1986-12-02 1991-02-26 Samsung Electronics Co., Ltd. Method of controlling the electric power supplied to a modem
EP0282298A2 (en) * 1987-03-13 1988-09-14 Space Systems / Loral, Inc. Method and apparatus for combining encoding and modulation
EP0325331A2 (en) * 1988-01-22 1989-07-26 Philips Electronics Uk Limited Signal distribution network system
EP0329023A2 (en) * 1988-02-16 1989-08-23 Array Microsystems, Inc. Apparatus for performing digital signal processing including fast fourier transform radix-4 butterfly computations
US5124980A (en) * 1989-03-20 1992-06-23 Maki Gerald G Synchronous multiport digital 2-way communications network using T1 PCM on a CATV cable
EP0392723A2 (en) * 1989-04-10 1990-10-17 AT&T Corp. Data communications apparatus and method
US5291289A (en) * 1990-11-16 1994-03-01 North American Philips Corporation Method and apparatus for transmission and reception of a digital television signal using multicarrier modulation
US5134464A (en) * 1990-11-16 1992-07-28 North American Philips Corporation Method and apparatus for the transmission and reception of a multicarrier digital television signal
US5315583A (en) * 1991-04-11 1994-05-24 Usa Digital Radio Method and apparatus for digital audio broadcasting and reception
WO1992018940A1 (en) * 1991-04-18 1992-10-29 Sharp Kabushiki Kaisha Quasi radix-16 processor and method
EP0584820A1 (en) * 1992-08-27 1994-03-02 Nec Corporation Access system
US5425050A (en) * 1992-10-23 1995-06-13 Massachusetts Institute Of Technology Television transmission system using spread spectrum and orthogonal frequency-division multiplex
EP0599632A2 (en) * 1992-11-27 1994-06-01 Commonwealth Scientific And Industrial Research Organisation Apparatus and methods for wireless communications
US5365525A (en) * 1992-11-27 1994-11-15 Motorola, Inc. Method for reducing bandwidth of a wireline communication path
US5471474A (en) * 1993-06-04 1995-11-28 Lancity Corporation Communications highway network system
WO1994029983A1 (en) * 1993-06-10 1994-12-22 Adc Telecommunications, Inc. Performance monitoring and failure isolation in a point-to-multipoint communication network
EP0630133A2 (en) * 1993-06-14 1994-12-21 AT&T Corp. Modem applications of simultaneous analog and digital communication
US5371548A (en) * 1993-07-09 1994-12-06 Cable Television Laboratories, Inc. System for transmission of digital data using orthogonal frequency division multiplexing
EP0637181A1 (en) * 1993-07-27 1995-02-01 Siemens Aktiengesellschaft Radio system with frequency optimization
CA2113330A1 (en) * 1993-08-17 1995-02-18 John M. Cioffi Multicarrier Modulation Transmission System with Variable Delay
US5596604A (en) * 1993-08-17 1997-01-21 Amati Communications Corporation Multicarrier modulation transmission system with variable delay
WO1995008228A1 (en) * 1993-09-17 1995-03-23 Scientific-Atlanta, Inc. Broadband communications system
EP0647043A2 (en) * 1993-10-04 1995-04-05 AT&T Corp. Data-driven autorating for use in data communications
EP0669749A1 (en) * 1994-02-24 1995-08-30 Multi-Tech Systems Inc Noncompressed voice and data communication over modem for a computer-based multifunction personal communications system
EP0673131A2 (en) * 1994-03-15 1995-09-20 Kabushiki Kaisha Toshiba Hierarchical OFDM system
EP0689313A2 (en) * 1994-05-26 1995-12-27 Nec Corporation AFC for OFDM using windowing
WO1995034149A1 (en) * 1994-06-02 1995-12-14 Amati Communications Corporation Method and apparatus for coordinating multi-point-to-point communications in a multi-tone data transmission system
WO1995034168A2 (en) * 1994-06-09 1995-12-14 Philips Electronics N.V. A two-way multiple access communication system, and a central station and a user station for use in such a system

Non-Patent Citations (12)

* Cited by examiner, † Cited by third party
Title
"COMBINED USE OF COLLISION-RESOLUTION AND COLLISION-AVOIDANCE MEDIA-ACCESS COMMUNICATION PROTOCOLS", IBM TECHNICAL DISCLOSURE BULLETIN, vol. 37, no. 10, 1 October 1994 (1994-10-01), pages 299 - 301, XP000475673 *
BOT DE P G M ET AL: "AN EXAMPLE OF A MULTI-RESOLUTION DIGITAL TERRESTRIAL TV MODEM", PROCEEDINGS OF THE INTERNATIONAL CONFERENCE ON COMMUNICATIONS (ICC), GENEVA, MAY 23 - 26, 1993, vol. 3 OF 3, 23 May 1993 (1993-05-23), INSTITUTE OF ELECTRICAL AND ELECTRONICS ENGINEERS, pages 1785 - 1790, XP000448431 *
CARROLL C: "DEVELOPMENT OF INTEGRATED CABLE/TELEPHONY IN THE UNITED KINGDOM", IEEE COMMUNICATIONS MAGAZINE, vol. 33, no. 8, 1 August 1995 (1995-08-01), pages 48 - 50, 55 - 60, XP000525540 *
GOLDBERG L: "BRAINS AND BANDWIDTH: FIBER SERVICE AT COPPER PRICES", ELECTRONIC DESIGN, vol. 43, no. 20, 2 October 1995 (1995-10-02), pages 51/52, 54, 59/60, XP000550493 *
LEI WEI ET AL: "SYNCHRONIZATION REQUIREMENTS FOR MULTI-USER OFDM ON SATELLITE MOBILE AND TWO-PATH RAYLEIGH FADING CHANNELS", IEEE TRANSACTIONS ON COMMUNICATIONS, vol. 43, no. 2/04, PART 02, 1 February 1995 (1995-02-01), pages 887 - 895, XP000502593 *
LUIKUO G ET AL: "A 500 MOPS DSP CHIP SET", ELECTRONIC ENGINEERING, vol. 60, no. 738, 1 June 1988 (1988-06-01), pages 109 - 111, 113, XP000118565 *
M.E.WOODWARD, H.JARMOUKLY: "Time-spread decoding: A method for the implementation of error-control algorithms in fast digital transmission channels using slow microprocessors", DIGITAL PROCESSING OF SIGNALS IN COMMUNICATIONS, 22 April 1985 (1985-04-22) - 26 April 1985 (1985-04-26), LOUGHBOROUGH UNIVERSITY, pages 119 - 124, XP002050185 *
N.A.RAMAKRISHNA ET AL: "A Testable CMOS Signal Processor for Fast Fourier Transforms", IEEE INTERNATIONAL SYMPOSIUM ON CIRCUITS AND SYSTEMS, vol. 1/3, 7 June 1988 (1988-06-07) - 9 June 1988 (1988-06-09), ESPOO FINLAND, pages 73 - 76, XP002035280 *
REINERS C ET AL: "MULTICARRIER TRANSMISSION TECHNIQUE IN CELLULAR MOBILE COMMUNICATIONS SYSTEMS", PROCEEDINGS OF THE VEHICULAR TECHNOLOGY CONFERENCE, STOCKHOLM, JUNE 8 - 10, 1994, vol. 3, 8 June 1994 (1994-06-08), INSTITUTE OF ELECTRICAL AND ELECTRONICS ENGINEERS, pages 1645 - 1649, XP000497701 *
S.M.SHARROCK, K.J.MALY, H.C.DU, S.GHANTA: "A broadband-based integrated voice/data/video network of multiple LANs with dynamic bandwidth allocation", IEEE INFOCOM '87 PROCEEDINGS, 31 March 1987 (1987-03-31), SAN FRANCISCO, CA, USA, pages 02-04-1987, XP002050162 *
SUNADA G ET AL: "COBRA: AN 1.2 MILLION TRANSISTOR EXPANDABLE COLUMN FFT CHIP", PROCEEDINGS OF THE INTERNATIONAL CONFERENCE ON COMPUTER DESIGN: VLS IN COMPUTERS AND PROCESSORS, CAMBRIDGE, MA., OCT. 10 - 12, 1994, 10 October 1994 (1994-10-10), INSTITUTE OF ELECTRICAL AND ELECTRONICS ENGINEERS, pages 546 - 550, XP000488941 *
YOSHIHIRO SAITO: "IMPROVEMENTS IN TDMA CIRCUIT SWITCHING SERVICES ON A TREE-SHAPED BROADBAND NETWORK", ELECTRONICS & COMMUNICATIONS IN JAPAN, PART I - COMMUNICATIONS, vol. 75, no. 7, 1 July 1992 (1992-07-01), pages 1 - 11, XP000330972 *

Also Published As

Publication number Publication date
IL125472A (en) 2002-05-23
WO1997027550A2 (en) 1997-07-31
AU1711797A (en) 1997-08-20
AU727079B2 (en) 2000-11-30
IL125472A0 (en) 1999-03-12

Similar Documents

Publication Publication Date Title
WO1997048197A3 (en) Communication system with multicarrier telephony transport
WO1996024989A3 (en) Multi-point to point communication system
CN102868510B (en) Communication means and transmitting set
EP0839423B1 (en) Pulse shaping for multicarrier modulation
EP0922341B1 (en) Improvements in, or relating to, multi-carrier transmission systems
AU6867596A (en) Information network access apparatus and methods for communicating information packets via telephone lines
EP2896174B1 (en) Physical layer (phy) link signaling for cable networks
WO1998052312A3 (en) Method and apparatus for superframe bit allocation in a discrete multitone (dmt) system
EP1035697A3 (en) Multiresolution transmission, in particular for multicarrier systems
EP0765055A3 (en) High-speed data communications network system and method
WO1998008345A3 (en) System for use in television roll-off band channels for data transfer over a network
EP1229753A3 (en) Receiver network for multiple OFDM upstreams
EP1011235A3 (en) Reception of multicarrier signals over power lines
CA2433909A1 (en) Apparatus and method for reducing papr in an ofdm mobile communication system
WO1997027550A3 (en) Communication system with multicarrier telephony transport
MY127504A (en) Multiresolution transmission, in particular for multicarrier systems
CA2205986A1 (en) Communication system with multicarrier telephony transport
CN1220358C (en) System and method for effectively conducting large-scale fast fourier transform
CA2316186A1 (en) Reduction of the crest factor in ofdm signal
CN1984110B (en) Method for decreasing peak equilibrium ratio and orthogonal frequency division multiplexing system
CA2453896A1 (en) Communication system with multicarrier telephony transport
SE9600603D0 (en) Device and method for cable TV networks
CA2757570A1 (en) Communication system with multicarrier telephony transport
US7076002B1 (en) Method and apparatus for symbol boundary synchronization
CN1549472A (en) Modulating and demodulating apparatus for orthogonal frequency division multiplexing system

Legal Events

Date Code Title Description
ENP Entry into the national phase

Ref document number: 2205986

Country of ref document: CA

Ref country code: CA

Ref document number: 2205986

Kind code of ref document: A

Format of ref document f/p: F

AK Designated states

Kind code of ref document: A2

Designated state(s): AL AM AT AU AZ BA BB BG BR BY CA CH CN CU CZ DE DK EE ES FI GB GE HU IL IS JP KE KG KP KR KZ LC LK LR LS LT LU LV MD MG MK MN MW MX NO NZ PL PT RO RU SD SE SG SI SK TJ TM TR TT UA UG US UZ VN

AL Designated countries for regional patents

Kind code of ref document: A2

Designated state(s): KE LS MW SD SZ UG AM AZ BY KG KZ MD RU TJ TM AT BE CH DE DK ES FI FR GB GR IE IT LU MC NL PT SE BF BJ CF CG CI CM GA GN ML MR NE SN TD TG

COP Corrected version of pamphlet

Free format text: PAGES 1/101-101/101,DRAWINGS,REPLACED BY NEW PAGES 1/107-107/107;DUE TO LATE TRANSMITTAL BY THE RECEIVING OFFICE

DFPE Request for preliminary examination filed prior to expiration of 19th month from priority date (pct application filed before 20040101)
AK Designated states

Kind code of ref document: A3

Designated state(s): AL AM AT AU AZ BA BB BG BR BY CA CH CN CU CZ DE DK EE ES FI GB GE HU IL IS JP KE KG KP KR KZ LC LK LR LS LT LU LV MD MG MK MN MW MX NO NZ PL PT RO RU SD SE SG SI SK TJ TM TR TT UA UG US UZ VN

AL Designated countries for regional patents

Kind code of ref document: A3

Designated state(s): KE LS MW SD SZ UG AM AZ BY KG KZ MD RU TJ TM AT BE CH DE DK ES FI FR GB GR IE IT LU MC NL PT SE BF BJ CF CG CI CM GA GN ML MR NE SN TD TG

121 Ep: the epo has been informed by wipo that ep was designated in this application
WWE Wipo information: entry into national phase

Ref document number: 1997903135

Country of ref document: EP

REG Reference to national code

Ref country code: DE

Ref legal event code: 8642

NENP Non-entry into the national phase

Ref country code: JP

Ref document number: 97527110

Format of ref document f/p: F

WWP Wipo information: published in national office

Ref document number: 1997903135

Country of ref document: EP

WWW Wipo information: withdrawn in national office

Ref document number: 1997903135

Country of ref document: EP