BR9814538A - Dispositivo e método para pré-codificar sinais de dados para transmissão pcm - Google Patents

Dispositivo e método para pré-codificar sinais de dados para transmissão pcm

Info

Publication number
BR9814538A
BR9814538A BR9814538-0A BR9814538A BR9814538A BR 9814538 A BR9814538 A BR 9814538A BR 9814538 A BR9814538 A BR 9814538A BR 9814538 A BR9814538 A BR 9814538A
Authority
BR
Brazil
Prior art keywords
analog
transmitted
constellation point
data
data signals
Prior art date
Application number
BR9814538-0A
Other languages
English (en)
Inventor
M Vedat Eyuboglu
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
Family has litigation
First worldwide family litigation filed litigation Critical https://patents.darts-ip.com/?family=25546087&utm_source=google_patent&utm_medium=platform_link&utm_campaign=public_patent_search&patent=BR9814538(A) "Global patent litigation dataset” by Darts-ip is licensed under a Creative Commons Attribution 4.0 International License.
Application filed by Motorola Inc filed Critical Motorola Inc
Publication of BR9814538A publication Critical patent/BR9814538A/pt

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
    • 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
    • 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

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)
  • Transmission Systems Not Characterized By The Medium Used For Transmission (AREA)
  • Dc Digital Transmission (AREA)

Abstract

<B>DISPOSITIVO E MéTODO PARA PRé-CODIFICAR SINAIS DE DADOS PARA TRANSMISSãO PCM<D> Um dispositivo e método para pré-codificar sinais de dados para transmissão por modulação de código de pulso (PCM) incluindo um transmissor (52) para transmitir uma seq³ência de níveis analógicos através de canal analógico para um dispositivo de quantificação, em que o canal analógico modifica os níveis analógicos transmitidos, o transmissor (52) compreendendo: um dispositivo de mapeamento (150) para mapear bits de dados a serem transmitidos para uma seq³ência de classes de equivalência, onde cada classe de equivalência contém um ou mais pontos de constelação; e um seletor de pontos de constelação (152) interconectado ao dispositivo de mapeamento (150) que seleciona um ponto de constelação em cada classe de equivalência para representar os bits de dados a serem transmitidos e que transmite um nível analógico que produz o ponto de constelação selecionado em uma entrada para o dispositivo de quantificação.
BR9814538-0A 1997-12-29 1998-11-13 Dispositivo e método para pré-codificar sinais de dados para transmissão pcm BR9814538A (pt)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US08/999,249 US6198776B1 (en) 1996-11-13 1997-12-29 Device and method for precoding data signals for PCM transmission
PCT/US1998/024368 WO1999034565A1 (en) 1997-12-29 1998-11-13 Device and method for precoding data signals for pcm transmission

Publications (1)

Publication Number Publication Date
BR9814538A true BR9814538A (pt) 2001-10-02

Family

ID=25546087

Family Applications (1)

Application Number Title Priority Date Filing Date
BR9814538-0A BR9814538A (pt) 1997-12-29 1998-11-13 Dispositivo e método para pré-codificar sinais de dados para transmissão pcm

Country Status (9)

Country Link
US (2) US6198776B1 (pt)
EP (1) EP1038378A1 (pt)
JP (1) JP4223683B2 (pt)
KR (1) KR100403095B1 (pt)
CN (1) CN1283351A (pt)
AU (1) AU1586799A (pt)
BR (1) BR9814538A (pt)
CA (1) CA2317545A1 (pt)
WO (1) WO1999034565A1 (pt)

Families Citing this family (26)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5914982A (en) * 1997-06-13 1999-06-22 Rockwell Semiconductor Systems, Inc. Method and apparatus for training linear equalizers in a PCM modem
US6633604B1 (en) * 1997-08-11 2003-10-14 Vocal Technologies, Ltd. Method of improving echo canceller training in modems and of discovering characteristics of a PCM channel
DE19748880C1 (de) * 1997-11-06 1999-05-12 Deutsche Telekom Ag Verfahren und Schaltungsanordnung zur verbesserten Datenübertragung
US6023493A (en) 1998-01-20 2000-02-08 Conexant Systems, Inc. Method and apparatus for synchronizing a data communication system to a periodic digital impairment
US6400769B1 (en) * 1998-08-04 2002-06-04 Texas Instruments Incorporated Central office linecard and method for mapping companded data formats
FR2783112A1 (fr) * 1998-09-08 2000-03-10 Koninkl Philips Electronics Nv Procede de recherche du point le plus proche d'une caracteristique d'un signal recu dans un ensemble de points repartis non uniformement
US6516025B1 (en) * 1999-04-29 2003-02-04 Texas Instruments Incorporated High-speed upstream modem communication
US7366470B1 (en) * 1999-06-24 2008-04-29 Intel Corporation Inter-modulation distortion compensation
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
US6798851B1 (en) * 1999-12-09 2004-09-28 Agere Systems Inc. Decoding for a non-linear codec
US7292648B1 (en) * 1999-12-09 2007-11-06 Agere Systems Inc. Precoding for a non-linear codec
US7061973B1 (en) * 2000-02-03 2006-06-13 General Electric Capital Corporation Data mode signaling system for PCM modem adaptation
US7085316B1 (en) * 2000-02-04 2006-08-01 General Electric Co. Method and apparatus for the control of modem transmit power
US6418170B1 (en) * 2000-02-07 2002-07-09 Motorola, Inc. Method and apparatus for achieving 180° phase invariant transmission in a PCM modem system
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
EP1224783A2 (en) 2000-04-06 2002-07-24 Lucent Technologies Inc. Upstream data transmission
DE10129015C2 (de) * 2001-06-15 2003-07-17 Infineon Technologies Ag Verfahren zum Übertragen eines analogen Datenstroms bei einer optimierten Anpassung des Zeitbereichsentzerrers
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
JP3875693B2 (ja) * 2004-03-24 2007-01-31 株式会社東芝 Ｌｐｃ符号を用いた符号化ビットのマッピング方法及び送信装置
US20060092050A1 (en) * 2004-10-05 2006-05-04 Djokovic Igor S Trellis constellation shaping
US8218567B2 (en) * 2007-03-12 2012-07-10 Broadcom Corporation Method and system for reducing transceiver power via a variable signal constellation
CN101577601B (zh) * 2009-04-30 2013-04-03 西安民兴信息工程有限责任公司 Pcm设备间信令互联互通装置及应用方法
US10727951B2 (en) * 2016-07-20 2020-07-28 Nokia Of America Corporation Low-complexity constellation shaping

Family Cites Families (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5394437A (en) 1992-10-20 1995-02-28 At&T Corp. High-speed modem synchronized to a remote CODEC
US5745527A (en) * 1993-02-16 1998-04-28 Motorola, Inc. Encoding method for constellation symbols of an RF transmitter
US5684834A (en) * 1993-06-14 1997-11-04 Paradyne Corporation Simultaneous analog and digital communication using fractional rate encoding
US5436930A (en) * 1993-06-14 1995-07-25 At&T Corp. Simultaneous analog and digital communications with a selection of different signal point constellations based on signal energy
US5528625A (en) 1994-01-03 1996-06-18 At&T Corp. High speed quantization-level-sampling modem with equalization arrangement
US5659579A (en) 1995-02-01 1997-08-19 Lucent Technologies Inc. Multilevel coding for fractional bits
US5696794A (en) * 1996-04-04 1997-12-09 Motorola, Inc. Method and apparatus for conditioning digitally modulated signals using channel symbol adjustment
US5841813A (en) * 1996-09-04 1998-11-24 Lucent Technologies Inc. Digital communications system using complementary codes and amplitude modulation
FR2753487B1 (fr) 1996-09-19 1998-11-20 Guy Negre Installation de compresseurs d'alimentation en air comprime haute pression pour moteur depollue ou depolluant
US5818879A (en) * 1996-10-15 1998-10-06 Motorola Inc. Device, system and method for spectrally shaping transmitted data signals
US5825816A (en) * 1997-02-14 1998-10-20 General Datacomm, Inc. Spectral and power shaping mapper for high data rate signalling
US5838724A (en) * 1997-02-14 1998-11-17 General Datacomm, Inc. Spectral and power shaping mapper for high data rate signalling

Also Published As

Publication number Publication date
CN1283351A (zh) 2001-02-07
EP1038378A1 (en) 2000-09-27
JP4223683B2 (ja) 2009-02-12
KR20010033694A (ko) 2001-04-25
CA2317545A1 (en) 1999-07-08
KR100403095B1 (ko) 2003-10-23
JP2002500471A (ja) 2002-01-08
US6173015B1 (en) 2001-01-09
US6198776B1 (en) 2001-03-06
WO1999034565A1 (en) 1999-07-08
AU1586799A (en) 1999-07-19

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Legal Events

Date Code Title Description
B08F Application dismissed because of non-payment of annual fees [chapter 8.6 patent gazette]

Free format text: REFERENTE A 4A , 5A , 6A E 7A ANUIDADES.

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 1876 DE 19/12/2006.