BR9814510A - Sistema, dispositivo e método para transmissão de pcm ascendente utilizando uma constelação de tranmissão otimizada - Google Patents

Sistema, dispositivo e método para transmissão de pcm ascendente utilizando uma constelação de tranmissão otimizada

Info

Publication number
BR9814510A
BR9814510A BR9814510-0A BR9814510A BR9814510A BR 9814510 A BR9814510 A BR 9814510A BR 9814510 A BR9814510 A BR 9814510A BR 9814510 A BR9814510 A BR 9814510A
Authority
BR
Brazil
Prior art keywords
constellation
pcm
analog
constellation point
constellation points
Prior art date
Application number
BR9814510-0A
Other languages
English (en)
Inventor
Dae-Young Kim
Pierre A Humblet
Original Assignee
Motorola 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
Application filed by Motorola Inc filed Critical Motorola Inc
Publication of BR9814510A publication Critical patent/BR9814510A/pt

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L27/00—Modulated-carrier systems
    • H04L27/02—Amplitude-modulated carrier systems, e.g. using on-off keying; Single sideband or vestigial sideband modulation
    • H04L27/04—Modulator circuits; Transmitter circuits
    • 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
    • H04L25/4917—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 using multilevel codes
    • H04L25/4927—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 using multilevel codes using levels matched to the quantisation levels of the channel
    • 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
    • H04L25/03343—Arrangements at the transmitter end

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Physics & Mathematics (AREA)
  • Spectroscopy & Molecular Physics (AREA)
  • Power Engineering (AREA)
  • Digital Transmission Methods That Use Modulated Carrier Waves (AREA)
  • Compression, Expansion, Code Conversion, And Decoders (AREA)
  • Telephonic Communication Services (AREA)
  • Transmission Systems Not Characterized By The Medium Used For Transmission (AREA)

Abstract

"SISTEMA, DISPOSITIVO E MéTODO PARA TRANSMISSãO PCM ASCENDENTE UTILIZANDO UMA CONSTELAçãO DE TRANSMISSãO OTIMIZADA". Um transmissor em um modem de modulação de código de pulso analógico (PCM) que transmite níveis analógicos através de um canal analógico, para produzir pontos de constelação em um dispositivo de quantificação, em que os pontos de constelação correspondem a grupos de bits de dados a serem transmitidos para um modem PCM digital, incluindo: um dispositivo transmissor que seleciona, para cada grupo de bits de dados a serem transmitidos, um ponto de constelação que corresponde ao grupo de bits de dados e transmite, através do canal analógico, um nível que produzirá na entrada do dispositivo de quantificação o ponto de constelação selecionado; em que os pontos de constelação são escolhidos de uma constelação de transmissão que consiste em vários pontos de constelação não uniformemente espaçados que têm probabilidade de erro minimizada, substancialmente equivalente, ponto de constelação a ponto de constelação.
BR9814510-0A 1997-12-29 1998-11-13 Sistema, dispositivo e método para transmissão de pcm ascendente utilizando uma constelação de tranmissão otimizada BR9814510A (pt)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US99925497A 1997-12-29 1997-12-29
PCT/US1998/024369 WO1999034566A1 (en) 1997-12-29 1998-11-13 System, device and method for pcm upstream transmission utilizing an optimized transmit constellation

Publications (1)

Publication Number Publication Date
BR9814510A true BR9814510A (pt) 2004-04-20

Family

ID=25546093

Family Applications (1)

Application Number Title Priority Date Filing Date
BR9814510-0A BR9814510A (pt) 1997-12-29 1998-11-13 Sistema, dispositivo e método para transmissão de pcm ascendente utilizando uma constelação de tranmissão otimizada

Country Status (9)

Country Link
EP (1) EP1038379B1 (pt)
JP (1) JP2002500472A (pt)
KR (1) KR100416888B1 (pt)
CN (1) CN100344137C (pt)
AU (1) AU1586899A (pt)
BR (1) BR9814510A (pt)
CA (1) CA2317547A1 (pt)
DE (1) DE69839814D1 (pt)
WO (1) WO1999034566A1 (pt)

Families Citing this family (15)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6516025B1 (en) * 1999-04-29 2003-02-04 Texas Instruments Incorporated High-speed upstream modem communication
AU6616500A (en) 1999-07-31 2001-03-13 Altocom, Inc. Digital impairment compensation for v.90 modem
US7190727B1 (en) 1999-07-31 2007-03-13 Broadcom Corporation Categorization of impairments affecting a communication channel
US7203248B1 (en) 1999-07-31 2007-04-10 Broadcom Corporation Impairment sensitive selection of constellation points for communication across a channel
US6594306B1 (en) * 1999-09-03 2003-07-15 Motorola, Inc. Method and apparatus for a start-up procedure for digital and analog modems utilizing pulse code modulation for data transmission
US6414989B1 (en) 1999-09-10 2002-07-02 Conexant Systems, Inc. Upstream PCM transmission for a modem system
US6408021B1 (en) * 2000-02-03 2002-06-18 Motorola, Inc. PCM modem adaptation system utilizing a silence period
US6266376B1 (en) * 2000-02-04 2001-07-24 Motorola, Inc. System and method for adjusting PCM data frames for robbed bit signaling in a telephone network
US7085316B1 (en) * 2000-02-04 2006-08-01 General Electric Co. Method and apparatus for the control of modem transmit power
GB2365728A (en) * 2000-03-22 2002-02-20 Fernway Ltd A method and apparatus for transmitting data from an analogue modem to a digital modem through an analogue channel
DE60238791D1 (de) * 2002-03-20 2011-02-10 Dounaev Igor Borisovich Verfahren und systeme zur digitalen datenübertragung
US7321618B2 (en) * 2002-04-09 2008-01-22 Texas Instruments Incorporated PCM upstream data transmission server
US7023927B2 (en) 2002-04-12 2006-04-04 Texas Instruments Incorporated Constellation design for PCM upstream modulation
US7391816B2 (en) * 2003-09-17 2008-06-24 Intel Corporation Decoding upstream V.92-encoded signals
CN102237988B (zh) * 2010-04-26 2014-01-01 华为技术有限公司 协作中继网络中的数据传输方法、系统、中间节点和源节点

Family Cites Families (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5521949A (en) * 1992-05-29 1996-05-28 At&T Corp. Synchronization scheme for digital communications systems transporting data at a customer-controlled rate
US5388124A (en) * 1992-06-12 1995-02-07 University Of Maryland Precoding scheme for transmitting data using optimally-shaped constellations over intersymbol-interference channels
US5546395A (en) * 1993-01-08 1996-08-13 Multi-Tech Systems, Inc. Dynamic selection of compression rate for a voice compression algorithm in a voice over data modem
SI9300025A (en) * 1993-01-21 1994-09-30 Spase Drakul Digital communication system in n-dimensional vector space for transmission coded waveforms in bandlimited chanels
US5488633A (en) * 1993-06-14 1996-01-30 At&T Corp. Intersymbol interference channel coding scheme
CA2154678C (en) * 1993-12-03 2003-01-28 Paulus George Maria De Bot A digital communication system and a receiver for use in such a system
US5659579A (en) * 1995-02-01 1997-08-19 Lucent Technologies Inc. Multilevel coding for fractional bits
WO1998032257A1 (en) * 1997-01-17 1998-07-23 Motorola, Inc. System and device for, and method of, communicating according to a composite code

Also Published As

Publication number Publication date
JP2002500472A (ja) 2002-01-08
CN1283352A (zh) 2001-02-07
CA2317547A1 (en) 1999-07-08
EP1038379A1 (en) 2000-09-27
EP1038379B1 (en) 2008-07-30
WO1999034566A1 (en) 1999-07-08
KR100416888B1 (ko) 2004-02-05
CN100344137C (zh) 2007-10-17
DE69839814D1 (de) 2008-09-11
EP1038379A4 (en) 2003-01-02
KR20010033691A (ko) 2001-04-25
AU1586899A (en) 1999-07-19

Similar Documents

Publication Publication Date Title
BR9814510A (pt) Sistema, dispositivo e método para transmissão de pcm ascendente utilizando uma constelação de tranmissão otimizada
BR9814538A (pt) Dispositivo e método para pré-codificar sinais de dados para transmissão pcm
DK482183A (da) Fremgangsmaade til digital informationsoverfoering
TW329581B (en) Rob bit compensation system and method associated with a transmitter or codec
BR9713072A (pt) Processo e equipamento para codificar uma pluralidade de sìmbolos de fonte para uso em um modulador de nìvel superior, e, processo e equipamento para decodificar uma pluralidade de sìmbolos de fonte que tenham sido modulados em um modulador de nìvel superior.
DK1635479T3 (da) System og fremgangsmåde til generering af signalbölgeformer i et cellulært CDMA telefonsystem
WO1998045977A3 (en) Mapper for high data rate transmission through channels subject to robbed bit signalling
EP0492459A3 (en) System for embedded coding of speech signals
BR0109872A (pt) Um método para codificação em um sistema de telecomunicações
NO20003476L (no) FremgangsmÕte og apparat for sending/mottaking
WO2004019529A3 (en) Beacon signaling in a wireless system
BR9810145A (pt) Método para estender a faixa de numeração de sequência e sistema para selecionar protocolos de transmissão repetida
BR9915780A (pt) Método para recebimento de um sinal modulado, e, sistema receptor para recebimento de um sinal modulado
BR9903784A (pt) Método para transmitir sinais de tty através de sistemas de comunicação sem fio.
MY117360A (en) Circuitry and method for transmitting voice and data signals upon a wireless communication channel
WO2000008409A3 (en) Laser frequency modulation tactical training system
BR0003068A (pt) Método de demodulação para receptor
BR0000002A (pt) Método para transmitir dados em canais de voz sem fio
BR0112545A (pt) Processo para o ajuste de parâmetros de emissão de um emissor para sinais de radiodigitais
DE3782644D1 (de) Verfahren zur informationsuebertragung mittels codesignalen, informationsuebertragungssystem zur durchfuehrung dieses verfahrens und uebertragungs- und empfangsgeraet zur verwendung in dem uebertragungssystem.
BR8804855A (pt) Conjunto embobinador para sistema umbilical embobinado,berco lanca-submarino,sistema r.o.v.submarino e conjunto fitiforme de linhas de servico
BR9815183A (pt) Sistema e método para moldar de forma espectral os sinais de dados transmitidos
NO923945D0 (no) System for aa hindre en omkaster fra aa generere uoenskede symboler
BR9908272A (pt) Sistema de comunicação e método para seleção de frequências alternativas
WO2001035541A3 (de) Verfahren zum decodieren eines spreizcodierten signals sowie entsprechende decodiervorrichtung

Legal Events

Date Code Title Description
B07A Technical examination (opinion): publication of technical examination (opinion) [chapter 7.1 patent gazette]
B08F Application fees: application dismissed [chapter 8.6 patent gazette]

Free format text: REFERENTE A 12A E 13A ANUIDADE(S).

B08K Patent lapsed as no evidence of payment of the annual fee has been furnished to inpi [chapter 8.11 patent gazette]

Free format text: REFERENTE AO DESPACHO 8.6 PUBLICADO NA RPI 2125 DE 27/09/2011.