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FI963317A7 - Monitasoisten, kaksiulotteisten modulaatioaakkostojen kantoaaltosynkronointi - Google Patents

Monitasoisten, kaksiulotteisten modulaatioaakkostojen kantoaaltosynkronointi Download PDF

Info

Publication number
FI963317A7
FI963317A7 FI963317A FI963317A FI963317A7 FI 963317 A7 FI963317 A7 FI 963317A7 FI 963317 A FI963317 A FI 963317A FI 963317 A FI963317 A FI 963317A FI 963317 A7 FI963317 A7 FI 963317A7
Authority
FI
Finland
Prior art keywords
level
carrier synchronization
dimensional modulation
modulation alphabets
alphabets
Prior art date
Application number
FI963317A
Other languages
English (en)
Swedish (sv)
Other versions
FI963317A0 (fi
FI963317L (fi
Inventor
Marko Escartin
Original Assignee
Nokia Technology Gmbh
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 Nokia Technology Gmbh filed Critical Nokia Technology Gmbh
Priority to FI963317A priority Critical patent/FI963317A7/fi
Publication of FI963317A0 publication Critical patent/FI963317A0/fi
Priority to US08/916,914 priority patent/US6008692A/en
Priority to EP97114140A priority patent/EP0827311B1/en
Priority to DE69737174T priority patent/DE69737174T2/de
Publication of FI963317L publication Critical patent/FI963317L/fi
Publication of FI963317A7 publication Critical patent/FI963317A7/fi

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
    • H04L27/3818—Demodulator circuits; Receiver circuits using coherent demodulation, i.e. using one or more nominally phase synchronous carriers
    • H04L27/3827—Demodulator circuits; Receiver circuits using coherent demodulation, i.e. using one or more nominally phase synchronous carriers in which the carrier is recovered using only the demodulated baseband signals

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Digital Transmission Methods That Use Modulated Carrier Waves (AREA)
  • Circuits Of Receivers In General (AREA)
FI963317A 1996-08-26 1996-08-26 Monitasoisten, kaksiulotteisten modulaatioaakkostojen kantoaaltosynkronointi FI963317A7 (fi)

Priority Applications (4)

Application Number Priority Date Filing Date Title
FI963317A FI963317A7 (fi) 1996-08-26 1996-08-26 Monitasoisten, kaksiulotteisten modulaatioaakkostojen kantoaaltosynkronointi
US08/916,914 US6008692A (en) 1996-08-26 1997-08-15 Carrier wave synchronization for multi-level two-dimensional modulation alphabets
EP97114140A EP0827311B1 (en) 1996-08-26 1997-08-16 Carrier recovery in a QAM receiver
DE69737174T DE69737174T2 (de) 1996-08-26 1997-08-16 Trägerrückgewinnung in einem QAM-Empfänger

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FI963317A FI963317A7 (fi) 1996-08-26 1996-08-26 Monitasoisten, kaksiulotteisten modulaatioaakkostojen kantoaaltosynkronointi

Publications (3)

Publication Number Publication Date
FI963317A0 FI963317A0 (fi) 1996-08-26
FI963317L FI963317L (fi) 1998-02-27
FI963317A7 true FI963317A7 (fi) 1998-02-27

Family

ID=8546531

Family Applications (1)

Application Number Title Priority Date Filing Date
FI963317A FI963317A7 (fi) 1996-08-26 1996-08-26 Monitasoisten, kaksiulotteisten modulaatioaakkostojen kantoaaltosynkronointi

Country Status (4)

Country Link
US (1) US6008692A (fi)
EP (1) EP0827311B1 (fi)
DE (1) DE69737174T2 (fi)
FI (1) FI963317A7 (fi)

Families Citing this family (26)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6389064B1 (en) * 1999-03-08 2002-05-14 International Business Machines Corporation Modems, methods, and computer program products for identifying a signaling alphabet in variance with an ideal alphabet due to digital impairments
GB0009302D0 (en) 2000-04-15 2000-05-31 Mitel Semiconductor Ltd Quadrature amplitude modulation demodulation and receiver
FR2819659B1 (fr) * 2001-01-15 2006-08-11 Mitsubishi Electric Inf Tech Methode simplifiee de detection par spheres en presence de faible rapport signal a bruit
US7471735B2 (en) 2001-04-27 2008-12-30 The Directv Group, Inc. Maximizing power and spectral efficiencies for layered and conventional modulations
US7184473B2 (en) 2001-04-27 2007-02-27 The Directv Group, Inc. Equalizers for layered modulated and other signals
US7822154B2 (en) 2001-04-27 2010-10-26 The Directv Group, Inc. Signal, interference and noise power measurement
US7245671B1 (en) 2001-04-27 2007-07-17 The Directv Group, Inc. Preprocessing signal layers in a layered modulation digital signal system to use legacy receivers
US7639759B2 (en) 2001-04-27 2009-12-29 The Directv Group, Inc. Carrier to noise ratio estimations from a received signal
US8005035B2 (en) 2001-04-27 2011-08-23 The Directv Group, Inc. Online output multiplexer filter measurement
US7184489B2 (en) 2001-04-27 2007-02-27 The Directv Group, Inc. Optimization technique for layered modulation
US7583728B2 (en) 2002-10-25 2009-09-01 The Directv Group, Inc. Equalizers for layered modulated and other signals
US7483505B2 (en) 2001-04-27 2009-01-27 The Directv Group, Inc. Unblind equalizer architecture for digital communication systems
US7423987B2 (en) 2001-04-27 2008-09-09 The Directv Group, Inc. Feeder link configurations to support layered modulation for digital signals
WO2004040403A2 (en) 2001-04-27 2004-05-13 The Directv Group, Inc. Lower complexity layered modulation signal processor
US7173981B1 (en) 2001-04-27 2007-02-06 The Directv Group, Inc. Dual layer signal processing in a layered modulation digital signal system
US7209524B2 (en) 2001-04-27 2007-04-24 The Directv Group, Inc. Layered modulation for digital signals
US7151807B2 (en) * 2001-04-27 2006-12-19 The Directv Group, Inc. Fast acquisition of timing and carrier frequency from received signal
US7502430B2 (en) 2001-04-27 2009-03-10 The Directv Group, Inc. Coherent averaging for measuring traveling wave tube amplifier nonlinearity
EP1540909A4 (en) 2002-07-01 2007-10-17 Directv Group Inc IMPROVING HIERARCHICAL 8PSK PERFORMANCE
AR040395A1 (es) 2002-07-03 2005-03-30 Hughes Electronics Corp Metodo y aparato para modulacion por capas
ES2343005T3 (es) 2002-10-25 2010-07-21 The Directv Group, Inc. Estimacion del punto de funcionamiento en un amplificador de tubo de ondas viajeras no lineal.
US7474710B2 (en) 2002-10-25 2009-01-06 The Directv Group, Inc. Amplitude and phase matching for layered modulation reception
ATE491296T1 (de) 2002-10-25 2010-12-15 Directv Group Inc Verfahren und vorrichtung zum anpassen von trägerleistungsanforderungen gemäss verfügbarkeit in geschichteten modulationssystemen
US7463676B2 (en) 2002-10-25 2008-12-09 The Directv Group, Inc. On-line phase noise measurement for layered modulation
US7529312B2 (en) 2002-10-25 2009-05-05 The Directv Group, Inc. Layered modulation for terrestrial ATSC applications
US7502429B2 (en) 2003-10-10 2009-03-10 The Directv Group, Inc. Equalization for traveling wave tube amplifier nonlinearity measurements

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4860321A (en) * 1985-09-13 1989-08-22 Hughes Aircraft Company Lock detector for feedback loops
US5600672A (en) * 1991-03-27 1997-02-04 Matsushita Electric Industrial Co., Ltd. Communication system
US5260671A (en) * 1991-05-17 1993-11-09 Hitachi, Ltd. Receiving circuit for demodulating an angle modulated signal
TW257923B (fi) * 1993-12-03 1995-09-21 Scientipic Atlanta Inc
US5621767A (en) * 1994-09-30 1997-04-15 Hughes Electronics Method and device for locking on a carrier signal by dividing frequency band into segments for segment signal quality determination and selecting better signal quality segment

Also Published As

Publication number Publication date
EP0827311B1 (en) 2007-01-03
US6008692A (en) 1999-12-28
FI963317A0 (fi) 1996-08-26
FI963317L (fi) 1998-02-27
DE69737174T2 (de) 2007-10-04
EP0827311A3 (en) 2001-01-24
DE69737174D1 (de) 2007-02-15
EP0827311A2 (en) 1998-03-04

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