BR0015782A - Sistema de transmissão qam hierárquico com fator de agrupamento variado - Google Patents

Sistema de transmissão qam hierárquico com fator de agrupamento variado

Info

Publication number
BR0015782A
BR0015782A BR0015782-1A BR0015782A BR0015782A BR 0015782 A BR0015782 A BR 0015782A BR 0015782 A BR0015782 A BR 0015782A BR 0015782 A BR0015782 A BR 0015782A
Authority
BR
Brazil
Prior art keywords
level
data
transmission system
qam
hierarchical qam
Prior art date
Application number
BR0015782-1A
Other languages
English (en)
Inventor
Timothy Forrest Settle
Thomas Peter Krauss
Kumar Ramaswamy
Original Assignee
Thomson Licensing Sa
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 Thomson Licensing Sa filed Critical Thomson Licensing Sa
Publication of BR0015782A publication Critical patent/BR0015782A/pt

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L27/00—Modulated-carrier systems
    • H04L27/32—Carrier systems characterised by combinations of two or more of the types covered by groups H04L27/02, H04L27/10, H04L27/18 or H04L27/26
    • H04L27/34—Amplitude- and phase-modulated carrier systems, e.g. quadrature-amplitude modulated carrier 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
    • H04L25/06—Dc level restoring means; Bias distortion correction ; Decision circuits providing symbol by symbol detection
    • H04L25/061—Dc level restoring means; Bias distortion correction ; Decision circuits providing symbol by symbol detection providing hard decisions only; arrangements for tracking or suppressing unwanted low frequency components, e.g. removal of dc offset
    • H04L25/062—Setting decision thresholds using feedforward techniques only
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L27/00—Modulated-carrier systems
    • H04L27/32—Carrier systems characterised by combinations of two or more of the types covered by groups H04L27/02, H04L27/10, H04L27/18 or H04L27/26
    • H04L27/34—Amplitude- and phase-modulated carrier systems, e.g. quadrature-amplitude modulated carrier systems
    • H04L27/3488—Multiresolution systems
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L27/00—Modulated-carrier systems
    • H04L27/32—Carrier systems characterised by combinations of two or more of the types covered by groups H04L27/02, H04L27/10, H04L27/18 or H04L27/26
    • H04L27/34—Amplitude- and phase-modulated carrier systems, e.g. quadrature-amplitude modulated carrier systems
    • H04L27/38—Demodulator circuits; Receiver circuits

Abstract

"SISTEMA DE TRANSMISSãO QAM HIERáRQUICO COM FATOR DE AGRUPAMENTO VARIADO". Um sistema QAM hierárquico permite a transmissão de diferentes fontes embutindo os pontos da constelação relativa. Um sistema de transmissão QAM, inclui uma fonte de um fluxo de dados de nível (1) e nível (2) , cada fluxo de dados transportando símbolos sucessivos. Um transmissor de QAM hierárquico, acoplado na fonte de fluxo de dados de nível (1) e nível (2) gera um sinal QAM hierárquico no qual um símbolo de nível (1) é representado por um ponto de dados em um de quatro quadrantes no plano I-Q, e um símbolo de nível (2) é representado pelo ponto de dados em um dos quatro subquadrantes circundando um ponto central do quadrante contendo o ponto de dados de nível (1). O ponto de dados de nível (2) é separado do ponto central por um fator de agrupamento ajustado para mais estreitamente igualar o desempenho da taxa de erro de bits dos fluxos de dados de nível (1) e nível (2).
BR0015782-1A 1999-11-23 2000-11-22 Sistema de transmissão qam hierárquico com fator de agrupamento variado BR0015782A (pt)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US16702399P 1999-11-23 1999-11-23
PCT/US2000/032009 WO2001039454A1 (en) 1999-11-23 2000-11-22 A hierarchical qam transmission system with varying grouping factor

Publications (1)

Publication Number Publication Date
BR0015782A true BR0015782A (pt) 2002-07-23

Family

ID=22605633

Family Applications (2)

Application Number Title Priority Date Filing Date
BRPI0015782-1A BRPI0015782B1 (pt) 1999-11-23 2000-11-22 Hierarchical qam transmission system with variable grouping factor
BR0015782-1A BR0015782A (pt) 1999-11-23 2000-11-22 Sistema de transmissão qam hierárquico com fator de agrupamento variado

Family Applications Before (1)

Application Number Title Priority Date Filing Date
BRPI0015782-1A BRPI0015782B1 (pt) 1999-11-23 2000-11-22 Hierarchical qam transmission system with variable grouping factor

Country Status (10)

Country Link
US (1) US7274653B1 (pt)
EP (1) EP1232623B1 (pt)
JP (1) JP4540284B2 (pt)
KR (1) KR100684233B1 (pt)
CN (1) CN100425044C (pt)
AU (1) AU2045701A (pt)
BR (2) BRPI0015782B1 (pt)
DE (1) DE60023337T2 (pt)
MX (1) MXPA02005141A (pt)
WO (1) WO2001039454A1 (pt)

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US7230998B2 (en) * 2003-11-26 2007-06-12 Delphi Technologies, Inc. Method to increase performance of secondary data in a hierarchical modulation scheme
US7386056B2 (en) 2003-11-26 2008-06-10 Delphi Technologies, Inc. Method to increase performance of secondary data in a hierarchical modulation scheme
US8144800B2 (en) * 2004-09-18 2012-03-27 Broadcom Corporatino Downstream transmitter and cable modem receiver for 1024 QAM
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US7773697B2 (en) 2005-03-23 2010-08-10 Delphi Technologies, Inc. Method to demodulate amplitude offsets in a differential modulation system
US7697886B2 (en) * 2005-05-19 2010-04-13 Delphi Technologies, Inc. Method and system to increase available bandwidth in a time division multiplexing system
WO2007000180A1 (en) 2005-06-29 2007-01-04 Matsushita Electric Industrial Co., Ltd. Method for using a symbol mapper using a symbol mapping scheme to generate modulation symbols according to a different symbol mapping scheme and a method for generating a symbol mapping scheme
US20070009064A1 (en) * 2005-07-07 2007-01-11 Zhijun Cai Method and apparatus to facilitate transmission of multiple data streams
KR100776976B1 (ko) * 2006-07-31 2007-11-21 전자부품연구원 데이터 가변적 통신 오율 제어 통신 시스템
KR100883348B1 (ko) * 2006-11-09 2009-02-11 한국전자통신연구원 계층변조 기반 수신 시스템에서의 채널 추정 장치 및 그방법
US7885289B2 (en) * 2006-12-19 2011-02-08 Lockheed Martin Corporation System and method for relaying turbo-coded piggyback messages
JP5129323B2 (ja) 2007-06-08 2013-01-30 クゥアルコム・インコーポレイテッド シングルキャリア周波数分割多元接続における通信チャネルに関する階層的変調
KR100901875B1 (ko) * 2007-07-19 2009-06-09 한국전자통신연구원 계층 변조 장치 및 방법
JP5168685B2 (ja) * 2007-09-18 2013-03-21 独立行政法人情報通信研究機構 直交振幅変調信号発生装置
CN101494629A (zh) * 2008-01-24 2009-07-29 华为技术有限公司 获取符号映射分集、生成星座图、调制的方法和装置
US8675754B1 (en) 2009-08-19 2014-03-18 Qualcomm Incorporated Hybrid modulation schemes used in data communication
US8306102B2 (en) * 2009-08-27 2012-11-06 Telefonaktiebolaget L M Ericsson (Publ) Demodulation using serial localization with indecision
US8279916B2 (en) 2009-08-27 2012-10-02 Telefonaktiebolaget L M Ericsson (Publ) Equalization using serial localization with indecision
US8457254B2 (en) * 2009-08-27 2013-06-04 Telefonaktiebolaget L M Ericsson (Publ) Equalization and residual self-interference suppression using serial localization with indecision
US8355471B2 (en) * 2009-08-27 2013-01-15 Telefonaktiebolaget L M Ericsson (Publ) Joint demodulation and interference suppression using serial localization with indecision
US8396168B2 (en) * 2010-04-15 2013-03-12 Telefonaktiebolaget L M Ericsson (Publ) Channel estimation for equalizer using serial localization with indecision
CN102098267B (zh) * 2011-01-24 2014-06-25 中国科学院半导体研究所 高速超低功耗16qam发射装置
EP2697948A4 (en) * 2011-04-14 2014-09-10 Alcatel Lucent METHOD AND DEVICE FOR IMPLEMENTING HIGHER MODULATION TYPES WITH LOW-POWERED MODULATORS
KR101294788B1 (ko) 2013-02-14 2013-08-08 지씨티 세미컨덕터 인코포레이티드 단일 안테나를 통한 이중열 디지털 신호 송신 방법, 단일 안테나를 통한 이중열 디지털 신호 송신기 및 단일 안테나를 통한 이중열 디지털 신호 수신 방법
US20150117866A1 (en) * 2013-10-31 2015-04-30 Zte Corporation Quadrature amplitude modulation symbol mapping
WO2015099556A1 (ru) * 2013-12-23 2015-07-02 Общество С Ограниченной Ответственностью "Космонет" Метод передачи и приема сигналов кам (квадратурной амплитудной модуляции)
US10136397B2 (en) 2015-01-14 2018-11-20 Sharp Kabushiki Kaisha Base station apparatus and terminal apparatus
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US10097395B2 (en) * 2016-04-21 2018-10-09 Electronics And Telecommunications Research Institute Apparatus and method for transmitting and receiving signal based on QAM constellation
KR102012258B1 (ko) * 2016-04-21 2019-08-22 한국전자통신연구원 Qam 성상도에 기반한 신호 송수신 방법 및 장치
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Also Published As

Publication number Publication date
CN1423884A (zh) 2003-06-11
EP1232623A1 (en) 2002-08-21
KR20020068355A (ko) 2002-08-27
US7274653B1 (en) 2007-09-25
MXPA02005141A (es) 2002-11-07
EP1232623B1 (en) 2005-10-19
DE60023337D1 (de) 2005-11-24
JP4540284B2 (ja) 2010-09-08
AU2045701A (en) 2001-06-04
DE60023337T2 (de) 2006-04-20
CN100425044C (zh) 2008-10-08
BRPI0015782B1 (pt) 2017-09-12
JP2003515976A (ja) 2003-05-07
WO2001039454A1 (en) 2001-05-31
KR100684233B1 (ko) 2007-02-20

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Legal Events

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B07A Application suspended after technical examination (opinion) [chapter 7.1 patent gazette]
B09B Patent application refused [chapter 9.2 patent gazette]

Free format text: INDEFIRO O PEDIDO DE ACORDO COM O ART .8O COMBINADO COM ART. 13 DA LPI

B12B Appeal against refusal [chapter 12.2 patent gazette]
B16A Patent or certificate of addition of invention granted [chapter 16.1 patent gazette]
B25D Requested change of name of applicant approved
B25G Requested change of headquarter approved
B25A Requested transfer of rights approved
B25A Requested transfer of rights approved
B21F Lapse acc. art. 78, item iv - on non-payment of the annual fees in time

Free format text: REFERENTE A 21A ANUIDADE.

B24J Lapse because of non-payment of annual fees (definitively: art 78 iv lpi, resolution 113/2013 art. 12)

Free format text: EM VIRTUDE DA EXTINCAO PUBLICADA NA RPI 2645 DE 14-09-2021 E CONSIDERANDO AUSENCIA DE MANIFESTACAO DENTRO DOS PRAZOS LEGAIS, INFORMO QUE CABE SER MANTIDA A EXTINCAO DA PATENTE E SEUS CERTIFICADOS, CONFORME O DISPOSTO NO ARTIGO 12, DA RESOLUCAO 113/2013.