BRPI0015782B1 - Hierarchical qam transmission system with variable grouping factor - Google Patents

Hierarchical qam transmission system with variable grouping factor Download PDF

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Publication number
BRPI0015782B1
BRPI0015782B1 BRPI0015782-1A BRPI0015782A BRPI0015782B1 BR PI0015782 B1 BRPI0015782 B1 BR PI0015782B1 BR PI0015782 A BRPI0015782 A BR PI0015782A BR PI0015782 B1 BRPI0015782 B1 BR PI0015782B1
Authority
BR
Brazil
Prior art keywords
level
data
signal
quadrant
constellation
Prior art date
Application number
BRPI0015782-1A
Other languages
English (en)
Portuguese (pt)
Inventor
Forrest Settle Timothy
Peter Krauss Thomas
Ramaswamy Kumar
Original Assignee
Thomson Licensing S.A.
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 S.A. filed Critical Thomson Licensing S.A.
Publication of BRPI0015782B1 publication Critical patent/BRPI0015782B1/pt

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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

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Power Engineering (AREA)
  • Digital Transmission Methods That Use Modulated Carrier Waves (AREA)
BRPI0015782-1A 1999-11-23 2000-11-22 Hierarchical qam transmission system with variable grouping factor BRPI0015782B1 (pt)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
US16702399P 1999-11-23 1999-11-23
US60/167.023 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
BRPI0015782B1 true BRPI0015782B1 (pt) 2017-09-12

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 After (1)

Application Number Title Priority Date Filing Date
BR0015782-1A BR0015782A (pt) 1999-11-23 2000-11-22 Sistema de transmissão qam hierárquico com fator de agrupamento variado

Country Status (10)

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

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US7386056B2 (en) 2003-11-26 2008-06-10 Delphi Technologies, Inc. Method to increase performance of secondary data in a hierarchical modulation scheme
US7499696B2 (en) * 2003-11-26 2009-03-03 Delphi Technologies, Inc. Method to optimize hierarchical modulation for a diversity system
US7230998B2 (en) 2003-11-26 2007-06-12 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
CN101213808B (zh) * 2005-06-29 2012-12-05 松下电器产业株式会社 用于根据不同的码元映射方案而使用利用码元映射方案的码元映射器来生成调制码元的方法、以及用于生成码元映射方案的方法
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
US8259848B2 (en) * 2007-06-08 2012-09-04 Qualcomm Incorporated Hierarchical modulation for communication channels in single-carrier frequency division multiple access
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
US8355471B2 (en) * 2009-08-27 2013-01-15 Telefonaktiebolaget L M Ericsson (Publ) Joint demodulation and interference suppression using serial localization with indecision
US8306102B2 (en) * 2009-08-27 2012-11-06 Telefonaktiebolaget L M Ericsson (Publ) Demodulation 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
US8279916B2 (en) 2009-08-27 2012-10-02 Telefonaktiebolaget L M Ericsson (Publ) Equalization 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
US20140035693A1 (en) * 2011-04-14 2014-02-06 Alcatel Lucent Method and apparatus for implementing high-order modulation schemes using low-order 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)
CN107210838B (zh) * 2015-01-14 2019-12-06 夏普株式会社 基站装置及终端装置
CA2998997A1 (en) * 2015-09-24 2017-03-30 Sony Corporation Device, method, and program
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
WO2020029128A1 (en) * 2018-08-08 2020-02-13 Zte Corporation Multiple access schemes with interference mitigation

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Also Published As

Publication number Publication date
US7274653B1 (en) 2007-09-25
BR0015782A (pt) 2002-07-23
EP1232623B1 (en) 2005-10-19
DE60023337T2 (de) 2006-04-20
CN1423884A (zh) 2003-06-11
JP2003515976A (ja) 2003-05-07
DE60023337D1 (de) 2005-11-24
JP4540284B2 (ja) 2010-09-08
EP1232623A1 (en) 2002-08-21
KR100684233B1 (ko) 2007-02-20
MXPA02005141A (es) 2002-11-07
CN100425044C (zh) 2008-10-08
KR20020068355A (ko) 2002-08-27
WO2001039454A1 (en) 2001-05-31
AU2045701A (en) 2001-06-04

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