MX9301465A - Metodo y aparato para la demodulacion de respuesta parcial. - Google Patents

Metodo y aparato para la demodulacion de respuesta parcial.

Info

Publication number
MX9301465A
MX9301465A MX9301465A MX9301465A MX9301465A MX 9301465 A MX9301465 A MX 9301465A MX 9301465 A MX9301465 A MX 9301465A MX 9301465 A MX9301465 A MX 9301465A MX 9301465 A MX9301465 A MX 9301465A
Authority
MX
Mexico
Prior art keywords
demodulation
partial response
digital
channel
demultiplexed
Prior art date
Application number
MX9301465A
Other languages
English (en)
Inventor
Leo Montreuil
Original Assignee
Scientific Atlanta
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 Scientific Atlanta filed Critical Scientific Atlanta
Publication of MX9301465A publication Critical patent/MX9301465A/es

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L25/00—Baseband systems
    • H04L25/38—Synchronous or start-stop systems, e.g. for Baudot code
    • H04L25/40—Transmitting circuits; Receiving circuits
    • H04L25/49—Transmitting circuits; Receiving circuits using code conversion at the transmitter; using predistortion; using insertion of idle bits for obtaining a desired frequency spectrum; using three or more amplitude levels ; Baseband coding techniques specific to data transmission systems
    • H04L25/497—Transmitting circuits; Receiving circuits using code conversion at the transmitter; using predistortion; using insertion of idle bits for obtaining a desired frequency spectrum; using three or more amplitude levels ; Baseband coding techniques specific to data transmission systems by correlative coding, e.g. partial response coding or echo modulation coding transmitters and receivers for partial response systems
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L27/00—Modulated-carrier systems
    • H04L27/18—Phase-modulated carrier systems, i.e. using phase-shift keying
    • H04L27/22—Demodulator circuits; Receiver circuits
    • H04L27/227—Demodulator circuits; Receiver circuits using coherent demodulation
    • H04L27/2271—Demodulator circuits; Receiver circuits using coherent demodulation wherein the carrier recovery circuit uses only the demodulated signals
    • H04L27/2273—Demodulator circuits; Receiver circuits using coherent demodulation wherein the carrier recovery circuit uses only the demodulated signals associated with quadrature demodulation, e.g. Costas loop
    • 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
    • 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
    • H04L2027/0046—Open loops
    • H04L2027/0051—Harmonic tracking
    • 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)
  • Spectroscopy & Molecular Physics (AREA)
  • Digital Transmission Methods That Use Modulated Carrier Waves (AREA)
  • Time-Division Multiplex Systems (AREA)

Abstract

Un sistema de comunicación de audio digital incluye un esquema de modulación digital, el cual utiliza de una manera eficiente la amplitud de banda y el espaciamiento de canal de un sistema de televisión por cable. Una corriente de bit digital de 30 canales se desmultiplexa en seis grupos de cinco canales.
MX9301465A 1992-03-16 1993-03-16 Metodo y aparato para la demodulacion de respuesta parcial. MX9301465A (es)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US07/851,445 US5214390A (en) 1992-03-16 1992-03-16 Method and apparatus for partial response demodulation

Publications (1)

Publication Number Publication Date
MX9301465A true MX9301465A (es) 1994-07-29

Family

ID=25310784

Family Applications (1)

Application Number Title Priority Date Filing Date
MX9301465A MX9301465A (es) 1992-03-16 1993-03-16 Metodo y aparato para la demodulacion de respuesta parcial.

Country Status (5)

Country Link
US (1) US5214390A (es)
CN (1) CN1081044A (es)
AU (1) AU3804093A (es)
MX (1) MX9301465A (es)
WO (1) WO1993019520A1 (es)

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US5555016A (en) * 1993-07-06 1996-09-10 Plessey Semiconductors Limited Video signal distribution system
US5479453A (en) * 1993-12-29 1995-12-26 Tsci Corporation Wireless telecommunication digital receiver
AU1436895A (en) * 1993-12-29 1995-07-17 Tcsi Corporation A wireless digital synchronized diversity receiver
US5461646A (en) * 1993-12-29 1995-10-24 Tcsi Corporation Synchronization apparatus for a diversity receiver
US6195399B1 (en) * 1994-03-28 2001-02-27 Ericsson Inc. Method and apparatus for converting a wideband if signal to a complex (quadrature) baseband signal
US5606576A (en) * 1995-01-23 1997-02-25 Northrop Grumman Corporation Adaptive mode control system for AM compatible digital broadcast
US5873048A (en) * 1995-07-27 1999-02-16 Lucent Technologies Inc. Locator and method for a wireless communication system
US6230203B1 (en) 1995-10-20 2001-05-08 Scientific-Atlanta, Inc. System and method for providing statistics for flexible billing in a cable environment
US5966163A (en) 1995-10-20 1999-10-12 Scientific-Atlanta, Inc. Providing constant bit rate upstream data transport in a two way cable system by scheduling preemptive grants for upstream data slots using selected fields of a plurality of grant fields
US5640425A (en) * 1995-12-26 1997-06-17 Golden Bridge Technology, Inc. Fast-acting costas loop
US7028088B1 (en) * 1996-04-03 2006-04-11 Scientific-Atlanta, Inc. System and method for providing statistics for flexible billing in a cable environment
US5822678A (en) * 1996-08-29 1998-10-13 Ericsson, Inc. CATV network for transport of radio frequency signals
US5901350A (en) * 1996-09-30 1999-05-04 Fairchild Semiconductor Corporation Low distortion large swing frequency down coverter filter amplifier circuit
US6324267B1 (en) 1997-01-17 2001-11-27 Scientific-Atlanta, Inc. Two-tiered authorization and authentication for a cable data delivery system
US6272150B1 (en) 1997-01-17 2001-08-07 Scientific-Atlanta, Inc. Cable modem map display for network management of a cable data delivery system
US6286058B1 (en) 1997-04-14 2001-09-04 Scientific-Atlanta, Inc. Apparatus and methods for automatically rerouting packets in the event of a link failure
NL1017191C2 (nl) * 2001-01-25 2002-07-30 Univ Delft Tech Kwadratuurmodulator en -demodulator.
US6801577B2 (en) * 2002-01-24 2004-10-05 Broadcom Corporation Low voltage swing pad driver and receiver
GB0614543D0 (en) * 2006-07-21 2006-08-30 Vodafone Plc RF Distribution
JP2009294379A (ja) * 2008-06-04 2009-12-17 Toshiba Mobile Display Co Ltd 液晶表示装置
CN102215189B (zh) 2010-04-02 2014-12-17 富士通株式会社 滤波器、相干接收机装置和相干接收方法
US8798670B2 (en) * 2012-08-03 2014-08-05 Blackberry Limited Mobile wireless communications device with DDPDT RF switch and related methods
JP6598563B2 (ja) * 2015-08-05 2019-10-30 ルネサスエレクトロニクス株式会社 信号変換器及び制御装置
WO2017139406A1 (en) * 2016-02-08 2017-08-17 Witricity Corporation Pwm capacitor control
US11000997B2 (en) 2018-07-23 2021-05-11 Xerox Corporation System and method for preserving valve member travel in a multi-nozzle extruder

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2546001B1 (fr) * 1983-05-10 1985-07-05 Thomson Csf Demodulateur de signaux, a enveloppe constante et phase continue, modules angulairement par un train de symboles binaires
US4886395A (en) * 1987-07-02 1989-12-12 Standard Oil Company Pipeline to riser connection method and apparatus

Also Published As

Publication number Publication date
US5214390A (en) 1993-05-25
WO1993019520A1 (en) 1993-09-30
AU3804093A (en) 1993-10-21
CN1081044A (zh) 1994-01-19

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