BR0206038A - Aparelho e método para calcular um valor de decisão suave que entra em um decodificador de canal em um sistema de comunicação de dados - Google Patents

Aparelho e método para calcular um valor de decisão suave que entra em um decodificador de canal em um sistema de comunicação de dados

Info

Publication number
BR0206038A
BR0206038A BR0206038-8A BR0206038A BR0206038A BR 0206038 A BR0206038 A BR 0206038A BR 0206038 A BR0206038 A BR 0206038A BR 0206038 A BR0206038 A BR 0206038A
Authority
BR
Brazil
Prior art keywords
sym
decision value
calculating
communication system
data communication
Prior art date
Application number
BR0206038-8A
Other languages
English (en)
Inventor
Sang-Hyuck Ha
Min-Goo Kim
Original Assignee
Samsung Electronics Co Ltd
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 Samsung Electronics Co Ltd filed Critical Samsung Electronics Co Ltd
Publication of BR0206038A publication Critical patent/BR0206038A/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
    • 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
    • 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
    • H04L25/067—Dc level restoring means; Bias distortion correction ; Decision circuits providing symbol by symbol detection providing soft decisions, i.e. decisions together with an estimate of reliability

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)
  • Error Detection And Correction (AREA)

Abstract

"APARELHO E MéTODO PARA CALCULAR UM VALOR DE DECISãO SUAVE QUE ENTRA EM UM DECODIFICADOR DE CANAL EM UM SISTEMA DE COMUNICAçãO DE DADOS". São revelados um aparelho e método de demodulação 64-ário QAM (Modulação de Amplitude de Quadratura) para receber um sinal de entrada R~ k~(X~ k~,Y~ k~) compreendido de um k^ ésimo^ sinal de fase de quadratura Y~ k~ e um k^ ésimo^ sinal em fase X~ k~, e gerar valores de decisão suave <sym> (S~ k~,~ 5~), <sym>(S~ k~,~ 4~), <sym>(S~ k~,~ 3~), <sym>(S~ k~,~ 2~), <sym>,(S~ k~,~ 1~) e <sym>(S~ k~,~ 0~) para o sinal de entrada R~ k~(X~ k~, Y~ k~). Um primeiro gerador de valor de decisão suave recebe o sinal de fase de quadratura Y~ k~ do sinal recebido R~ k~ e um valor de distância 2a entre seis símbolos demodulados no mesmo eixo. Um segundo gerador de valor de decisão suave recebe o sinal em fase X~ k~ do sinal recebido R~ k~ e o valor de distância 2a entre os seis símbolos demodulados no mesmo eixo.
BR0206038-8A 2001-09-18 2002-09-17 Aparelho e método para calcular um valor de decisão suave que entra em um decodificador de canal em um sistema de comunicação de dados BR0206038A (pt)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
KR10-2001-0057622A KR100450949B1 (ko) 2001-09-18 2001-09-18 데이터 통신 시스템에서 채널 복호기 입력 연성 결정 값계산 장치 및 방법
PCT/KR2002/001740 WO2003026243A1 (en) 2001-09-18 2002-09-17 Apparatus and method for calculating soft decision value input to channel decoder in a data communication system

Publications (1)

Publication Number Publication Date
BR0206038A true BR0206038A (pt) 2003-09-09

Family

ID=19714398

Family Applications (1)

Application Number Title Priority Date Filing Date
BR0206038-8A BR0206038A (pt) 2001-09-18 2002-09-17 Aparelho e método para calcular um valor de decisão suave que entra em um decodificador de canal em um sistema de comunicação de dados

Country Status (10)

Country Link
US (1) US7042954B2 (pt)
EP (1) EP1294152B1 (pt)
JP (1) JP3910586B2 (pt)
KR (1) KR100450949B1 (pt)
CN (1) CN1224229C (pt)
AU (1) AU2002329092B2 (pt)
BR (1) BR0206038A (pt)
CA (1) CA2429453C (pt)
RU (1) RU2248678C2 (pt)
WO (1) WO2003026243A1 (pt)

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US7515658B2 (en) * 2004-06-29 2009-04-07 Stmicroelectronics Asia Pacific Pte. Ltd. Method to adaptively scale the input to a channel decoder
KR100678936B1 (ko) 2004-08-06 2007-02-07 삼성전자주식회사 디지털 방송 수신기에서의 복조 방식 선택 방법 및 그방법을 이용하는 디지털 방송 수신기
US7586991B2 (en) * 2006-03-16 2009-09-08 Posdata Co., Ltd. Method and apparatus for calculating likelihood metric of a received signal in a digital communication system
CN101136898B (zh) * 2006-08-28 2010-12-08 联芯科技有限公司 一种正交调幅软判决方法及装置
KR100854635B1 (ko) * 2006-12-12 2008-08-27 포스데이타 주식회사 연판정 입력 메트릭 산출 장치 및 방법과, 이를 이용한수신 심볼 복조 장치 및 방법
CN100558096C (zh) * 2007-07-25 2009-11-04 北京天碁科技有限公司 一种应用于通信系统的正交幅度调制解调方法和装置
TWI398137B (zh) * 2009-10-30 2013-06-01 Mstar Semiconductor Inc 軟判決方法及其訊號接收系統
US8340202B2 (en) 2010-03-11 2012-12-25 Telefonaktiebolaget Lm Ericsson (Publ) Method and apparatus for efficient soft modulation for gray-mapped QAM symbols
RU2538331C2 (ru) * 2013-05-20 2015-01-10 Федеральный научно-производственный центр Открытое акционерное общество "Научно-производственное объединение "Марс" Мягкий декодер последовательного турбокода
RU184852U1 (ru) * 2018-05-11 2018-11-13 Российская Федерация, от имени которой выступает Государственная корпорация по космической деятельности "РОСКОСМОС" Устройство формирования мягкого решения демодулятора сигнала четвертичной фазовой манипуляции со сглаживанием и сдвигом
US11540279B2 (en) 2019-07-12 2022-12-27 Meteorcomm, Llc Wide band sensing of transmissions in FDM signals containing multi-width channels
MX2021015147A (es) 2020-12-08 2022-06-09 Meteorcomm Llc Demodulador diferencial de decisión programada para radios en redes inalámbricas de soporte al control de trenes.
US12022375B2 (en) 2020-12-19 2024-06-25 Meteorcomm, Llc End of train to head of train communication over a train control network
US20240113929A1 (en) * 2022-09-28 2024-04-04 Samsung Electronics Co., Ltd. Qam demodulator having recursive structure

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Also Published As

Publication number Publication date
JP3910586B2 (ja) 2007-04-25
RU2248678C2 (ru) 2005-03-20
AU2002329092B2 (en) 2005-02-10
JP2005503725A (ja) 2005-02-03
CA2429453A1 (en) 2003-03-27
EP1294152A3 (en) 2006-08-02
EP1294152A2 (en) 2003-03-19
RU2003114414A (ru) 2005-01-27
EP1294152B1 (en) 2013-01-23
US7042954B2 (en) 2006-05-09
US20030138054A1 (en) 2003-07-24
CA2429453C (en) 2007-07-03
WO2003026243A1 (en) 2003-03-27
KR20030027233A (ko) 2003-04-07
CN1481634A (zh) 2004-03-10
CN1224229C (zh) 2005-10-19
KR100450949B1 (ko) 2004-10-02

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Legal Events

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

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

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