HUE052502T2 - Hordozó helyreállítása QAM vevõben - Google Patents

Hordozó helyreállítása QAM vevõben

Info

Publication number
HUE052502T2
HUE052502T2 HUE14711849A HUE14711849A HUE052502T2 HU E052502 T2 HUE052502 T2 HU E052502T2 HU E14711849 A HUE14711849 A HU E14711849A HU E14711849 A HUE14711849 A HU E14711849A HU E052502 T2 HUE052502 T2 HU E052502T2
Authority
HU
Hungary
Prior art keywords
carrier recovery
qam receiver
qam
receiver
recovery
Prior art date
Application number
HUE14711849A
Other languages
English (en)
Inventor
Jonathan Thursby
Sumanth Eadala
Original Assignee
Ev Offshore 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 Ev Offshore Ltd filed Critical Ev Offshore Ltd
Publication of HUE052502T2 publication Critical patent/HUE052502T2/hu

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
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L27/00—Modulated-carrier systems
    • H04L27/02—Amplitude-modulated carrier systems, e.g. using on-off keying; Single sideband or vestigial sideband modulation
    • H04L27/06—Demodulator circuits; Receiver circuits
    • H04L27/066—Carrier recovery 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
    • H04L27/38—Demodulator circuits; Receiver circuits
    • H04L27/3845—Demodulator circuits; Receiver circuits using non - coherent demodulation, i.e. not using a phase synchronous carrier
    • H04L27/3854—Demodulator circuits; Receiver circuits using non - coherent demodulation, i.e. not using a phase synchronous carrier using a non - coherent carrier, including systems with baseband correction for phase or frequency offset
    • H04L27/3872—Compensation for phase rotation in the demodulated signal
    • 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
    • H04L27/227—Demodulator circuits; Receiver circuits using coherent demodulation
    • H04L27/2271—Demodulator circuits; Receiver circuits using coherent demodulation wherein the carrier recovery circuit uses only the demodulated signals
    • H04L27/2273—Demodulator circuits; Receiver circuits using coherent demodulation wherein the carrier recovery circuit uses only the demodulated signals associated with quadrature demodulation, e.g. Costas loop
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L7/00—Arrangements for synchronising receiver with transmitter
    • H04L7/04—Speed or phase control by synchronisation signals
    • H04L7/10—Arrangements for initial synchronisation
    • E—FIXED CONSTRUCTIONS
    • E21—EARTH OR ROCK DRILLING; MINING
    • E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
    • E21B47/00—Survey of boreholes or wells
    • E21B47/12—Means for transmitting measuring-signals or control signals from the well to the surface, or from the surface to the well, e.g. for logging while drilling

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Digital Transmission Methods That Use Modulated Carrier Waves (AREA)
  • Arrangements For Transmission Of Measured Signals (AREA)
HUE14711849A 2013-02-28 2014-02-28 Hordozó helyreállítása QAM vevõben HUE052502T2 (hu)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB1303623.1A GB2513830B (en) 2013-02-28 2013-02-28 Telemetry method and apparatus

Publications (1)

Publication Number Publication Date
HUE052502T2 true HUE052502T2 (hu) 2021-05-28

Family

ID=48142204

Family Applications (1)

Application Number Title Priority Date Filing Date
HUE14711849A HUE052502T2 (hu) 2013-02-28 2014-02-28 Hordozó helyreállítása QAM vevõben

Country Status (6)

Country Link
US (1) US9473337B2 (hu)
EP (1) EP2962438B1 (hu)
CA (1) CA2902803C (hu)
GB (1) GB2513830B (hu)
HU (1) HUE052502T2 (hu)
WO (1) WO2014132238A1 (hu)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US10134349B2 (en) * 2016-12-02 2018-11-20 Apple Inc. Display interference mitigation systems and methods
US10975688B2 (en) * 2017-06-20 2021-04-13 Halliburton Energy Services, Inc. Methods and systems with downhole synchronization based on a direct digital synthesizer (DDS)

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5838727A (en) 1991-02-15 1998-11-17 Schlumberger Technology Corporation Method and apparatus for transmitting and receiving digital data over a bandpass channel
US20090296799A1 (en) * 2008-03-12 2009-12-03 Raul Alejandro Casas Channel identification, emulation, and frame synchronization for digital television signals
US8638889B2 (en) 2010-10-28 2014-01-28 Broadcom Corporation Method and apparatus to improve acquisition of a quadrature amplitude modulated (QAM) signal having a frequency offset

Also Published As

Publication number Publication date
EP2962438B1 (en) 2020-09-02
EP2962438A1 (en) 2016-01-06
CA2902803A1 (en) 2014-09-04
GB201303623D0 (en) 2013-04-17
US9473337B2 (en) 2016-10-18
US20160006590A1 (en) 2016-01-07
WO2014132238A1 (en) 2014-09-04
GB2513830B (en) 2015-07-15
CA2902803C (en) 2021-06-22
GB2513830A (en) 2014-11-12

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