BRPI0410036A - aparelho e método para uso em decodificação iterativa - Google Patents

aparelho e método para uso em decodificação iterativa

Info

Publication number
BRPI0410036A
BRPI0410036A BRPI0410036-0A BRPI0410036A BRPI0410036A BR PI0410036 A BRPI0410036 A BR PI0410036A BR PI0410036 A BRPI0410036 A BR PI0410036A BR PI0410036 A BRPI0410036 A BR PI0410036A
Authority
BR
Brazil
Prior art keywords
ground station
signal
downlink signal
receiving
llrs
Prior art date
Application number
BRPI0410036-0A
Other languages
English (en)
Inventor
Joshua Koslov
Kumar Ramaswamy
Wen Gao
Original Assignee
Thomson Licensing
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 filed Critical Thomson Licensing
Publication of BRPI0410036A publication Critical patent/BRPI0410036A/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
    • H04L27/38—Demodulator circuits; Receiver circuits
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B7/00—Radio transmission systems, i.e. using radiation field
    • H04B7/14—Relay systems
    • H04B7/15—Active relay systems
    • H04B7/185—Space-based or airborne stations; Stations for satellite systems
    • H04B7/1851—Systems using a satellite or space-based relay
    • H04B7/18517—Transmission equipment in earth stations
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L1/00—Arrangements for detecting or preventing errors in the information received
    • H04L1/0001—Systems modifying transmission characteristics according to link quality, e.g. power backoff
    • H04L1/0015—Systems modifying transmission characteristics according to link quality, e.g. power backoff characterised by the adaptation strategy
    • H04L1/0016—Systems modifying transmission characteristics according to link quality, e.g. power backoff characterised by the adaptation strategy involving special memory structures, e.g. look-up tables
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L1/00—Arrangements for detecting or preventing errors in the information received
    • H04L1/004—Arrangements for detecting or preventing errors in the information received by using forward error control
    • H04L1/0045—Arrangements at the receiver end
    • H04L1/0047—Decoding adapted to other signal detection operation
    • H04L1/005—Iterative decoding, including iteration between signal detection and decoding operation
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L27/00—Modulated-carrier systems
    • H04L27/18—Phase-modulated carrier systems, i.e. using phase-shift keying
    • H04L27/22—Demodulator circuits; Receiver circuits
    • 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
    • H04L27/36—Modulator circuits; Transmitter circuits
    • H04L27/366—Arrangements for compensating undesirable properties of the transmission path between the modulator and the demodulator

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Aviation & Aerospace Engineering (AREA)
  • Physics & Mathematics (AREA)
  • Astronomy & Astrophysics (AREA)
  • Quality & Reliability (AREA)
  • General Physics & Mathematics (AREA)
  • Digital Transmission Methods That Use Modulated Carrier Waves (AREA)
  • Radio Relay Systems (AREA)
  • Two-Way Televisions, Distribution Of Moving Picture Or The Like (AREA)
  • Synchronisation In Digital Transmission Systems (AREA)
  • Error Detection And Correction (AREA)
  • Circuits Of Receivers In General (AREA)

Abstract

"APARELHO E MéTODO PARA USO EM DECODIFICAçãO ITERATIVA". Um sistema de comunicações por satélite compreende uma estação terrestre transmissora, incluindo um transmissor e um receptor, um transponder de satélite e uma estação terrestre receptora. O transmissor transmite um sinal de ligação de subida para o transponder de satélite que difunde o sinal de ligação de subida recebido como um sinal de ligação de descida para a estação terrestre receptora. A estação terrestre transmissora monitora o sinal de ligação de descida através do receptor e calcula as razões de logverossimilhança (LLRs) como uma função do sinal de ligação de descida monitorado. Estas LLRs são ilustrativamente armazenadas em uma tabela de consulta que são depois transmitidas à estação terrestre receptora para uso na recuperação de dados de um sinal de dados recebido.
BRPI0410036-0A 2003-05-05 2004-04-24 aparelho e método para uso em decodificação iterativa BRPI0410036A (pt)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US46794603P 2003-05-05 2003-05-05
PCT/US2004/013733 WO2004100475A2 (en) 2003-05-05 2004-04-24 Adaptive soft demodulation for reception of distorted signals

Publications (1)

Publication Number Publication Date
BRPI0410036A true BRPI0410036A (pt) 2006-04-25

Family

ID=33435146

Family Applications (3)

Application Number Title Priority Date Filing Date
BRPI0410036-0A BRPI0410036A (pt) 2003-05-05 2004-04-24 aparelho e método para uso em decodificação iterativa
BRPI0410010-7A BRPI0410010A (pt) 2003-05-05 2004-04-24 aparelho e método para decodificação em um sistema de modulação hierárquico
BRPI0410013-1A BRPI0410013A (pt) 2003-05-05 2004-04-30 método e aparelho para sincronizar um sinal de modulação com múltiplos nìveis

Family Applications After (2)

Application Number Title Priority Date Filing Date
BRPI0410010-7A BRPI0410010A (pt) 2003-05-05 2004-04-24 aparelho e método para decodificação em um sistema de modulação hierárquico
BRPI0410013-1A BRPI0410013A (pt) 2003-05-05 2004-04-30 método e aparelho para sincronizar um sinal de modulação com múltiplos nìveis

Country Status (8)

Country Link
US (1) US7464318B2 (pt)
EP (3) EP1620984B1 (pt)
JP (3) JP4642753B2 (pt)
KR (3) KR101051213B1 (pt)
CN (3) CN100512244C (pt)
BR (3) BRPI0410036A (pt)
DE (1) DE602004016312D1 (pt)
WO (3) WO2004100475A2 (pt)

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DE102007053091A1 (de) * 2007-11-07 2009-05-14 Rohde & Schwarz Gmbh & Co. Kg Verfahren und Vorrichtung zur Decodierung von faltungscodierten Signalen
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KR100903877B1 (ko) * 2007-12-13 2009-06-24 한국전자통신연구원 디지털 방송 시스템에서 신호 수신 장치 및 방법
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RU2013125784A (ru) * 2013-06-04 2014-12-10 ЭлЭсАй Корпорейшн Устройство для обработки сигналов, переносящих кодированные с модуляцией биты четности
EP3119051B1 (en) * 2014-03-13 2019-11-20 Mitsubishi Electric Corporation Likelihood generation device and method therefor
EP3206355B1 (en) * 2014-10-06 2020-05-27 Sony Corporation Receiving device, receiving method, and program for reception of non-linearly distorted signals
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Also Published As

Publication number Publication date
BRPI0410013A (pt) 2006-04-25
WO2004100478A3 (en) 2005-05-19
JP2006527532A (ja) 2006-11-30
US7464318B2 (en) 2008-12-09
CN100512244C (zh) 2009-07-08
CN1784875A (zh) 2006-06-07
JP4603536B2 (ja) 2010-12-22
JP2006525763A (ja) 2006-11-09
WO2004100479A1 (en) 2004-11-18
BRPI0410010A (pt) 2006-04-25
EP1620984A2 (en) 2006-02-01
JP4516959B2 (ja) 2010-08-04
WO2004100475A3 (en) 2005-01-13
JP2006525767A (ja) 2006-11-09
EP1620987A2 (en) 2006-02-01
WO2004100475A2 (en) 2004-11-18
US20060212776A1 (en) 2006-09-21
WO2004100478A2 (en) 2004-11-18
DE602004016312D1 (de) 2008-10-16
CN1784877A (zh) 2006-06-07
KR20060010780A (ko) 2006-02-02
EP1620984B1 (en) 2008-09-03
EP1620986A1 (en) 2006-02-01
WO2004100478B1 (en) 2005-07-14
KR101051213B1 (ko) 2011-07-21
KR20060054179A (ko) 2006-05-22
JP4642753B2 (ja) 2011-03-02
KR20060010781A (ko) 2006-02-02
CN1784877B (zh) 2012-09-26
CN1784878A (zh) 2006-06-07

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