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BR9815183A - Sistema e método para moldar de forma espectral os sinais de dados transmitidos - Google Patents

Sistema e método para moldar de forma espectral os sinais de dados transmitidos

Info

Publication number
BR9815183A
BR9815183A BR9815183-5A BR9815183A BR9815183A BR 9815183 A BR9815183 A BR 9815183A BR 9815183 A BR9815183 A BR 9815183A BR 9815183 A BR9815183 A BR 9815183A
Authority
BR
Brazil
Prior art keywords
signal
bits
symbol
magnitude
frame
Prior art date
Application number
BR9815183-5A
Other languages
English (en)
Inventor
M Vedat Eyuboglu
Dae-Young Kim
Chien-Cheng Tung
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 BR9815183A publication Critical patent/BR9815183A/pt

Links

Classifications

    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03M—CODING; DECODING; CODE CONVERSION IN GENERAL
    • H03M13/00—Coding, decoding or code conversion, for error detection or error correction; Coding theory basic assumptions; Coding bounds; Error probability evaluation methods; Channel models; Simulation or testing of codes
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B14/00—Transmission systems not characterised by the medium used for transmission
    • H04B14/02—Transmission systems not characterised by the medium used for transmission characterised by the use of pulse modulation
    • H04B14/04—Transmission systems not characterised by the medium used for transmission characterised by the use of pulse modulation using pulse code modulation
    • 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)
  • Physics & Mathematics (AREA)
  • Signal Processing (AREA)
  • Spectroscopy & Molecular Physics (AREA)
  • Theoretical Computer Science (AREA)
  • Probability & Statistics with Applications (AREA)
  • Digital Transmission Methods That Use Modulated Carrier Waves (AREA)
  • Compression, Expansion, Code Conversion, And Decoders (AREA)
  • Error Detection And Correction (AREA)
  • Dc Digital Transmission (AREA)
  • Detection And Prevention Of Errors In Transmission (AREA)
  • Transmission Systems Not Characterized By The Medium Used For Transmission (AREA)

Abstract

<B>SISTEMA E MéTODO PARA MOLDAR DE FORMA ESPECTRAL OS SINAIS DE DADOS TRANSMITIDOS<D> Sistema para transmitir de um transmissor, quadro a quadro, bits de informação digital que são codificados em um número predefinido de símbolos sinalizados por quadro para transmissão através de uma rede para um receptor, em que os símbolos sinalizados transmitidos têm um formato espectral desejado; sendo que os bits de informação digital se dividem em um primeiro número predeterminado de bits de informação de magnitudes e um segundo número predeterminado de bits de informação de sinal por quadro, o transmissor incluindo: um dispositivo de conversão de magnitude para converter os bits de informação de magnitude no número predefinido de magnitude de símbolo por quadro; um codificador de bit de sinal para codificar os bits de informação de sinal no número predefinido de bits de sinal de símbolo codificado por quadro; e um seletor de ponto de sinal, responsivo ao dispositivo de conversão de magnitude e ao codificador de bit de sinal, o qual combina as magnitudes de símbolo e os bits de sinal de símbolo codificado para formar o número predefinido de símbolos sinalizados transmitidos por quadro; o codificador de bit de sinal compreendendo: um gerador representativo de subconjunto que gera, para cada quadro, bits de sinal representativo de subconjunto para os bits de informação de sinal, definindo um elemento representativo de subconjunto para um código convolucional que identifica um subconjunto do código convolucional contendo candidatos de bits de sinal de símbolo codificado; e um seletor de bit de sinal de símbolo, responsivo aos bits de sinal representativo de subconjunto e às magnitudes de símbolo, que seleciona os bits de sinal de símbolo codificado dentre os candidatos de bits de sinal de símbolo codificado que produzem os símbolos sinalizados transmitidos com o formato espectral desejado.
BR9815183-5A 1997-04-08 1998-04-03 Sistema e método para moldar de forma espectral os sinais de dados transmitidos BR9815183A (pt)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
US4282697P 1997-04-08 1997-04-08
US5231998A 1998-03-31 1998-03-31
PCT/US1998/006650 WO1998045970A1 (en) 1997-04-08 1998-04-03 System and method for spectrally shaping transmitted data signals

Publications (1)

Publication Number Publication Date
BR9815183A true BR9815183A (pt) 2000-10-10

Family

ID=26719663

Family Applications (1)

Application Number Title Priority Date Filing Date
BR9815183-5A BR9815183A (pt) 1997-04-08 1998-04-03 Sistema e método para moldar de forma espectral os sinais de dados transmitidos

Country Status (11)

Country Link
EP (1) EP0974209A1 (pt)
JP (1) JP2002501693A (pt)
KR (1) KR20010006101A (pt)
CN (1) CN1252195A (pt)
AU (1) AU6882498A (pt)
BR (1) BR9815183A (pt)
CA (1) CA2285073A1 (pt)
EA (1) EA001872B1 (pt)
IL (1) IL131921A0 (pt)
TW (1) TW445733B (pt)
WO (1) WO1998045970A1 (pt)

Families Citing this family (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5999109A (en) * 1997-06-09 1999-12-07 3Com Corporation Frame-based spectral shaping method and apparatus
US7016428B1 (en) * 1998-11-14 2006-03-21 Stmicroelectronics Asia Pacific Pte Ltd. Methods of efficient implementation of trellis based spectral shaping with lookahead
US6778611B1 (en) 1999-08-31 2004-08-17 Broadcom Corporation Subdimensional single-carrier modulation
DE60043822D1 (de) * 1999-08-31 2010-03-25 Broadcom Corp Subdimensionale einträgermodulation
US6418170B1 (en) * 2000-02-07 2002-07-09 Motorola, Inc. Method and apparatus for achieving 180° phase invariant transmission in a PCM modem system
WO2001059946A1 (en) 2000-02-10 2001-08-16 Telogy Networks, Inc. A generalized precoder for the upstream voiceband modem channel
US6973579B2 (en) * 2002-05-07 2005-12-06 Interdigital Technology Corporation Generation of user equipment identification specific scrambling code for the high speed shared control channel
TWI411298B (zh) * 2009-03-05 2013-10-01 Realtek Semiconductor Corp Frequency conversion device and conversion method and filter thereof
US11418220B2 (en) 2020-03-20 2022-08-16 Huawei Technologies Co., Ltd. Method, system, and apparatus for a segmented polarization-adjusted convolutional (PAC) code

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5040191A (en) * 1987-02-24 1991-08-13 Codex Corporation Partial response channel signaling systems
US5150381A (en) * 1989-02-16 1992-09-22 Codex Corporation Trellis shaping for modulation systems
US5548615A (en) * 1993-05-03 1996-08-20 At&T Corp. Methods and apparatus for rotationally invariant multilevel coding
US5608397A (en) * 1995-08-15 1997-03-04 Lucent Technologies Inc. Method and apparatus for generating DC-free sequences

Also Published As

Publication number Publication date
AU6882498A (en) 1998-10-30
EP0974209A1 (en) 2000-01-26
CA2285073A1 (en) 1998-10-15
EA001872B1 (ru) 2001-10-22
KR20010006101A (ko) 2001-01-26
TW445733B (en) 2001-07-11
IL131921A0 (en) 2001-03-19
CN1252195A (zh) 2000-05-03
JP2002501693A (ja) 2002-01-15
EA199900807A1 (ru) 2000-06-26
WO1998045970A1 (en) 1998-10-15

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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 5O,6O,7O,8O E A 9O 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 1910 DE 14/08/2007.