MX9705953A - Sistema de comunicacion de multiples puntos a punto. - Google Patents
Sistema de comunicacion de multiples puntos a punto.Info
- Publication number
- MX9705953A MX9705953A MX9705953A MX9705953A MX9705953A MX 9705953 A MX9705953 A MX 9705953A MX 9705953 A MX9705953 A MX 9705953A MX 9705953 A MX9705953 A MX 9705953A MX 9705953 A MX9705953 A MX 9705953A
- Authority
- MX
- Mexico
- Prior art keywords
- frequency bandwidth
- head end
- control data
- downstream
- telephony
- Prior art date
Links
Classifications
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L1/00—Arrangements for detecting or preventing errors in the information received
- H04L1/004—Arrangements for detecting or preventing errors in the information received by using forward error control
- H04L1/0056—Systems characterized by the type of code used
- H04L1/0057—Block codes
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B10/00—Transmission systems employing electromagnetic waves other than radio-waves, e.g. infrared, visible or ultraviolet light, or employing corpuscular radiation, e.g. quantum communication
- H04B10/25—Arrangements specific to fibre transmission
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B1/00—Details of transmission systems, not covered by a single one of groups H04B3/00 - H04B13/00; Details of transmission systems not characterised by the medium used for transmission
- H04B1/69—Spread spectrum techniques
- H04B1/707—Spread spectrum techniques using direct sequence modulation
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B10/00—Transmission systems employing electromagnetic waves other than radio-waves, e.g. infrared, visible or ultraviolet light, or employing corpuscular radiation, e.g. quantum communication
- H04B10/27—Arrangements for networking
- H04B10/272—Star-type networks or tree-type networks
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04J—MULTIPLEX COMMUNICATION
- H04J14/00—Optical multiplex systems
- H04J14/02—Wavelength-division multiplex systems
- H04J14/0298—Wavelength-division multiplex systems with sub-carrier multiplexing [SCM]
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04J—MULTIPLEX COMMUNICATION
- H04J3/00—Time-division multiplex systems
- H04J3/02—Details
- H04J3/14—Monitoring arrangements
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L1/00—Arrangements for detecting or preventing errors in the information received
- H04L1/004—Arrangements for detecting or preventing errors in the information received by using forward error control
- H04L1/0056—Systems characterized by the type of code used
- H04L1/0061—Error detection codes
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L1/00—Arrangements for detecting or preventing errors in the information received
- H04L1/20—Arrangements for detecting or preventing errors in the information received using signal quality detector
- H04L1/203—Details of error rate determination, e.g. BER, FER or WER
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L1/00—Arrangements for detecting or preventing errors in the information received
- H04L1/24—Testing correct operation
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L12/00—Data switching networks
- H04L12/28—Data switching networks characterised by path configuration, e.g. LAN [Local Area Networks] or WAN [Wide Area Networks]
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- 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
- H04L25/03828—Arrangements for spectral shaping; Arrangements for providing signals with specified spectral properties
- H04L25/03866—Arrangements for spectral shaping; Arrangements for providing signals with specified spectral properties using scrambling
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- 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
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- 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
- H04L27/2614—Peak power aspects
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- 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
- H04L27/2626—Arrangements specific to the transmitter only
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- 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
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- 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
- H04L27/2649—Demodulators
- H04L27/265—Fourier transform demodulators, e.g. fast Fourier transform [FFT] or discrete Fourier transform [DFT] demodulators
- H04L27/2652—Fourier transform demodulators, e.g. fast Fourier transform [FFT] or discrete Fourier transform [DFT] demodulators with polyphase implementation
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- 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
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- 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
- H04L27/2665—Fine synchronisation, e.g. by positioning the FFT window
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L5/00—Arrangements affording multiple use of the transmission path
- H04L5/02—Channels characterised by the type of signal
- H04L5/023—Multiplexing of multicarrier modulation signals
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L5/00—Arrangements affording multiple use of the transmission path
- H04L5/02—Channels characterised by the type of signal
- H04L5/06—Channels characterised by the type of signal the signals being represented by different frequencies
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N21/00—Selective content distribution, e.g. interactive television or video on demand [VOD]
- H04N21/60—Network structure or processes for video distribution between server and client or between remote clients; Control signalling between clients, server and network components; Transmission of management data between server and client, e.g. sending from server to client commands for recording incoming content stream; Communication details between server and client
- H04N21/61—Network physical structure; Signal processing
- H04N21/6106—Network physical structure; Signal processing specially adapted to the downstream path of the transmission network
- H04N21/6118—Network physical structure; Signal processing specially adapted to the downstream path of the transmission network involving cable transmission, e.g. using a cable modem
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N21/00—Selective content distribution, e.g. interactive television or video on demand [VOD]
- H04N21/60—Network structure or processes for video distribution between server and client or between remote clients; Control signalling between clients, server and network components; Transmission of management data between server and client, e.g. sending from server to client commands for recording incoming content stream; Communication details between server and client
- H04N21/61—Network physical structure; Signal processing
- H04N21/6156—Network physical structure; Signal processing specially adapted to the upstream path of the transmission network
- H04N21/6168—Network physical structure; Signal processing specially adapted to the upstream path of the transmission network involving cable transmission, e.g. using a cable modem
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N7/00—Television systems
- H04N7/16—Analogue secrecy systems; Analogue subscription systems
- H04N7/173—Analogue secrecy systems; Analogue subscription systems with two-way working, e.g. subscriber sending a programme selection signal
- H04N7/17309—Transmission or handling of upstream communications
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L1/00—Arrangements for detecting or preventing errors in the information received
- H04L2001/0092—Error control systems characterised by the topology of the transmission link
- H04L2001/0096—Channel splitting in point-to-point links
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L27/00—Modulated-carrier systems
- H04L27/0014—Carrier regulation
- H04L2027/0024—Carrier regulation at the receiver end
- H04L2027/0026—Correction of carrier offset
- H04L2027/0036—Correction of carrier offset using a recovered symbol clock
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L27/00—Modulated-carrier systems
- H04L27/0014—Carrier regulation
- H04L2027/0044—Control loops for carrier regulation
- H04L2027/0053—Closed loops
- H04L2027/0057—Closed loops quadrature phase
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L27/00—Modulated-carrier systems
- H04L27/0014—Carrier regulation
- H04L2027/0044—Control loops for carrier regulation
- H04L2027/0063—Elements of loops
- H04L2027/0067—Phase error detectors
Landscapes
- Engineering & Computer Science (AREA)
- Signal Processing (AREA)
- Computer Networks & Wireless Communication (AREA)
- Physics & Mathematics (AREA)
- Multimedia (AREA)
- Electromagnetism (AREA)
- Discrete Mathematics (AREA)
- Power Engineering (AREA)
- Quality & Reliability (AREA)
- Computing Systems (AREA)
- General Physics & Mathematics (AREA)
- Mathematical Physics (AREA)
- Spectroscopy & Molecular Physics (AREA)
- Telephonic Communication Services (AREA)
- Two-Way Televisions, Distribution Of Moving Picture Or The Like (AREA)
- Small-Scale Networks (AREA)
- Locating Faults (AREA)
- Mobile Radio Communication Systems (AREA)
- Radio Relay Systems (AREA)
- Data Exchanges In Wide-Area Networks (AREA)
Abstract
El sistema de comunicacion incluye una red de distribucion híbrida de fibra/coaxial. Un extremo cabezal permite la transmision corriente abajo de datos de telefonía y de control en la amplitud de banda de una primera frecuencia sobre al red de distribucion híbrida de fibra/coaxial, y la recepcion de datos de telefonía y de control corriente arriba en la amplitud de banda de una segunda frecuencia, sobre la red de distribucion híbrida de fibra/coaxial. El extremo cabezal incluye un modem multiportador de extremo cabezal par modular cuando menos informacion de telefonía corriente abajo en una pluralidad de portadores ortogonales en la amplitud de banda de la primera frecuencia, y para desmodular cuando menos informacion de telefonía corriente arriba, modulada en una pluralidad de portadores ortogonales en la amplitud de banda de la segunda frecuencia. La terminal de extremo cabezal también incluye un controlador conectado de manera operativa al modem multiportador de extremo cabeza, para controlar la transmision de la informacion de telefonía corriente abajo y de datos de control corriente abajo, y para controlar la recepcion de los datos de control corriente arriba y la informacion de telefonía corriente arriba. El sistema también incluye unidades de servicio, cada unidad de servicio conectada de manera operativa a la red de distribucion híbrida de fibra/coaxial, para la transmision corriente arriba de informacion de telefonía y de datos de control corriente arriba en la amplitud de banda de la segunda frecuencia, y para recibir los datos de control y la informacion de telefonía corriente abajo en la amplitud de banda de la primera frecuencia. Cada unidad de servicio incluye un modem multiportador de unidad de servicio para la modulacion de cuando menos la informacion de telefonía corriente arriba, en cuando menos un portador ortogonal en la terminal de extremo cabezal, a otro portador en la amplitud de banda de la segunda frecuencia, y para la desmodulacion de cuando menos la informacion de telefonía corriente abajo, modulada en cuando menos una banda de pluralidad de portadores ortogonales en la amplitud de banda de la primer frecuencia. Cada unidad de servicio también incluye un controlador conectado de manera operativa al modem multiportador de unidad de servicio para controlar la modulacion de, y la desmodulacion realizada por el modem multiportador de unidad de servicio. También se incluyen un método para inspeccionar canales de comunicacion, un método de antinodo distribuido para ajustar características de transmision para permitir la transmision de datos en un sistema de comunicacion de multiples puntos a punto, una técnica de filtro polifásico para proporcionar proteccion contra ingreso y un método de exploracion para identificar las bandas de frecuencia que se van a usar para la transmision de las unidades de servicio.
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US38465995A | 1995-02-06 | 1995-02-06 | |
US45731795A | 1995-06-01 | 1995-06-01 | |
PCT/US1996/001575 WO1996024989A2 (en) | 1995-02-06 | 1996-02-06 | Multi-point to point communication system |
Publications (1)
Publication Number | Publication Date |
---|---|
MX9705953A true MX9705953A (es) | 1998-02-28 |
Family
ID=27010697
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
MX9705953A MX9705953A (es) | 1995-02-06 | 1996-02-06 | Sistema de comunicacion de multiples puntos a punto. |
Country Status (13)
Country | Link |
---|---|
EP (2) | EP0809898A2 (es) |
JP (2) | JP2986921B2 (es) |
KR (1) | KR100254067B1 (es) |
CN (1) | CN1086877C (es) |
AU (1) | AU703284B2 (es) |
BR (1) | BR9607031A (es) |
CA (1) | CA2211117C (es) |
CZ (1) | CZ289894B6 (es) |
FI (15) | FI120711B (es) |
MX (1) | MX9705953A (es) |
NZ (1) | NZ302973A (es) |
TW (1) | TW321809B (es) |
WO (1) | WO1996024989A2 (es) |
Families Citing this family (40)
Publication number | Priority date | Publication date | Assignee | Title |
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US7280564B1 (en) | 1995-02-06 | 2007-10-09 | Adc Telecommunications, Inc. | Synchronization techniques in multipoint-to-point communication using orthgonal frequency division multiplexing |
USRE42236E1 (en) | 1995-02-06 | 2011-03-22 | Adc Telecommunications, Inc. | Multiuse subcarriers in multipoint-to-point communication using orthogonal frequency division multiplexing |
US6359938B1 (en) | 1996-10-31 | 2002-03-19 | Discovision Associates | Single chip VLSI implementation of a digital receiver employing orthogonal frequency division multiplexing |
AU727726B2 (en) * | 1996-10-31 | 2000-12-21 | Discovision Associates | Single chip VLSI implementation of a digital receiver employing orthogonal frequency division multiplexing |
TW465234B (en) | 1997-02-18 | 2001-11-21 | Discovision Ass | Single chip VLSI implementation of a digital receiver employing orthogonal frequency division multiplexing |
US6314102B1 (en) | 1997-07-10 | 2001-11-06 | Alcatel | Telecommunications system for providing both narrowband and broadband services to subscribers |
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EP0930744A1 (en) * | 1998-01-02 | 1999-07-21 | NewTec CY N.V. | Multiple access method using multicarrier transmission |
IT1299560B1 (it) * | 1998-07-13 | 2000-03-16 | Pinnacle Ventures Ltd | Sistema ottimizzato di distribuzione di servizi televisivi e di telecomunicazioni da un nodo periferico a termimali di utente |
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JP2001156873A (ja) * | 1999-11-22 | 2001-06-08 | Mitsubishi Electric Corp | 通信方法および通信装置 |
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KR100945827B1 (ko) * | 2008-04-08 | 2010-03-05 | 주식회사 휴커넥스 | 전화선을 이용한 포인트-투-멀티포인트 네트워크 시스템 |
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1996
- 1996-02-06 EP EP96905381A patent/EP0809898A2/en not_active Withdrawn
- 1996-02-06 WO PCT/US1996/001575 patent/WO1996024989A2/en active Application Filing
- 1996-02-06 MX MX9705953A patent/MX9705953A/es active IP Right Grant
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- 1996-02-06 BR BR9607031A patent/BR9607031A/pt unknown
- 1996-02-06 CZ CZ19972487A patent/CZ289894B6/cs unknown
- 1996-02-06 AU AU49158/96A patent/AU703284B2/en not_active Expired
- 1996-02-06 CN CN96193008A patent/CN1086877C/zh not_active Expired - Lifetime
- 1996-02-06 EP EP02076653A patent/EP1229683A3/en not_active Withdrawn
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1997
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1999
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2008
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2011
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