ATE499784T1 - Automatische frequenzkorrektur - Google Patents

Automatische frequenzkorrektur

Info

Publication number
ATE499784T1
ATE499784T1 AT08788605T AT08788605T ATE499784T1 AT E499784 T1 ATE499784 T1 AT E499784T1 AT 08788605 T AT08788605 T AT 08788605T AT 08788605 T AT08788605 T AT 08788605T AT E499784 T1 ATE499784 T1 AT E499784T1
Authority
AT
Austria
Prior art keywords
signal
phase
quadrature
baseband
signals
Prior art date
Application number
AT08788605T
Other languages
English (en)
Inventor
Ganesh Kathiresan
Original Assignee
Toumaz Technology 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 Toumaz Technology Ltd filed Critical Toumaz Technology Ltd
Application granted granted Critical
Publication of ATE499784T1 publication Critical patent/ATE499784T1/de

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L27/00—Modulated-carrier systems
    • H04L27/10—Frequency-modulated carrier systems, i.e. using frequency-shift keying
    • H04L27/14—Demodulator circuits; Receiver circuits
    • H04L27/144—Demodulator circuits; Receiver circuits with demodulation using spectral properties of the received signal, e.g. by using frequency selective- or frequency sensitive elements
    • H04L27/152—Demodulator circuits; Receiver circuits with demodulation using spectral properties of the received signal, e.g. by using frequency selective- or frequency sensitive elements using controlled oscillators, e.g. PLL arrangements
    • H04L27/1525—Demodulator circuits; Receiver circuits with demodulation using spectral properties of the received signal, e.g. by using frequency selective- or frequency sensitive elements using controlled oscillators, e.g. PLL arrangements using quadrature demodulation
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L7/00—Arrangements for synchronising receiver with transmitter
    • H04L7/02—Speed or phase control by the received code signals, the signals containing no special synchronisation information
    • H04L7/033—Speed or phase control by the received code signals, the signals containing no special synchronisation information using the transitions of the received signal to control the phase of the synchronising-signal-generating means, e.g. using a phase-locked loop
    • H04L7/0331—Speed or phase control by the received code signals, the signals containing no special synchronisation information using the transitions of the received signal to control the phase of the synchronising-signal-generating means, e.g. using a phase-locked loop with a digital phase-locked loop [PLL] processing binary samples, e.g. add/subtract logic for correction of receiver clock
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L27/00—Modulated-carrier systems
    • H04L27/10—Frequency-modulated carrier systems, i.e. using frequency-shift keying
    • H04L27/14—Demodulator circuits; Receiver circuits
    • H04L27/144—Demodulator circuits; Receiver circuits with demodulation using spectral properties of the received signal, e.g. by using frequency selective- or frequency sensitive elements
    • H04L27/152—Demodulator circuits; Receiver circuits with demodulation using spectral properties of the received signal, e.g. by using frequency selective- or frequency sensitive elements using controlled oscillators, e.g. PLL arrangements
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L27/00—Modulated-carrier systems
    • H04L27/10—Frequency-modulated carrier systems, i.e. using frequency-shift keying
    • H04L27/14—Demodulator circuits; Receiver circuits
    • H04L27/156—Demodulator circuits; Receiver circuits with demodulation using temporal properties of the received signal, e.g. detecting pulse width
    • H04L27/1563—Demodulator circuits; Receiver circuits with demodulation using temporal properties of the received signal, e.g. detecting pulse width using transition or level detection
    • 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
    • H04L7/041—Speed or phase control by synchronisation signals using special codes as synchronising signal
    • 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
    • H04L7/08—Speed or phase control by synchronisation signals the synchronisation signals recurring cyclically
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L27/00—Modulated-carrier systems
    • H04L27/0014—Carrier regulation
    • H04L2027/0024—Carrier regulation at the receiver end
    • H04L2027/0026—Correction of carrier offset
    • H04L2027/003—Correction of carrier offset at baseband only
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L27/00—Modulated-carrier systems
    • H04L27/0014—Carrier regulation
    • H04L2027/0044—Control loops for carrier regulation
    • H04L2027/0053—Closed loops
    • H04L2027/0059—Closed loops more than two phases
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L27/00—Modulated-carrier systems
    • H04L27/0014—Carrier regulation
    • H04L2027/0044—Control loops for carrier regulation
    • H04L2027/0063—Elements of loops
    • H04L2027/0065—Frequency error detectors
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L27/00—Modulated-carrier systems
    • H04L27/0014—Carrier regulation
    • H04L2027/0083—Signalling arrangements
    • H04L2027/0089—In-band signals
    • H04L2027/0091—Continuous signals
    • 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
    • H04L7/041—Speed or phase control by synchronisation signals using special codes as synchronising signal
    • H04L7/046—Speed or phase control by synchronisation signals using special codes as synchronising signal using a dotting sequence

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Physics & Mathematics (AREA)
  • Spectroscopy & Molecular Physics (AREA)
  • Digital Transmission Methods That Use Modulated Carrier Waves (AREA)
  • Superheterodyne Receivers (AREA)
  • Stabilization Of Oscillater, Synchronisation, Frequency Synthesizers (AREA)
AT08788605T 2007-10-19 2008-07-28 Automatische frequenzkorrektur ATE499784T1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
GB0720410A GB2453767A (en) 2007-10-19 2007-10-19 Automatic frequency correction in a frequency shift keying recevier
PCT/GB2008/050630 WO2009050499A1 (en) 2007-10-19 2008-07-28 Automatic frequency correction

Publications (1)

Publication Number Publication Date
ATE499784T1 true ATE499784T1 (de) 2011-03-15

Family

ID=38814069

Family Applications (1)

Application Number Title Priority Date Filing Date
AT08788605T ATE499784T1 (de) 2007-10-19 2008-07-28 Automatische frequenzkorrektur

Country Status (8)

Country Link
US (1) US8483322B2 (de)
EP (1) EP2208328B1 (de)
JP (1) JP5256294B2 (de)
CN (1) CN101843065B (de)
AT (1) ATE499784T1 (de)
DE (1) DE602008005185D1 (de)
GB (1) GB2453767A (de)
WO (1) WO2009050499A1 (de)

Families Citing this family (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2013150852A1 (ja) 2012-04-04 2013-10-10 三菱電機株式会社 デジタルデータ配信装置及び方法、及びデジタルデータ再生装置及び方法、同期再生システム、プログラム、並びに記録媒体
US10045343B2 (en) 2013-02-22 2018-08-07 Agency For Science, Technology And Research Digital auto frequency control for a general purpose if subsystem with multi-modulation schemes
GB2512935A (en) * 2013-04-12 2014-10-15 Nordic Semiconductor Asa Digital Radio Transmissions
CN107968757B (zh) * 2016-10-20 2020-12-18 国民技术股份有限公司 一种频移键控调制信号的解调方法及系统
EP3544194B1 (de) * 2018-03-20 2020-11-25 JVC KENWOOD Corporation Empfänger, empfangsverfahren zum empfangen von fsk-signalen
JP7508362B2 (ja) 2020-12-24 2024-07-01 株式会社シーテック ケーブル接続治具セット及びケーブル接続方法
US11368277B1 (en) 2021-04-21 2022-06-21 Apple Inc. Accurate sign change for radio frequency transmitters

Family Cites Families (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0260263A (ja) * 1988-08-25 1990-02-28 Fujitsu Ltd 無線機に用いる局部発振器の周波数安定化回路
CA2014916C (en) * 1989-04-20 1994-11-08 Yoichiro Minami Direct conversion receiver with dithering local carrier frequency for detecting transmitted carrier frequency
US5528633A (en) * 1992-03-13 1996-06-18 Comstream Corporation Tuner with quadrature downconverter for pulse amplitude modulated data applications
US5633898A (en) 1993-12-22 1997-05-27 Matsushita Electric Industrial Co., Ltd. Automatic frequency control apparatus for FSK receiver and FSK receiver including the same
GB2287144B (en) * 1994-02-23 1998-11-18 Motorola Israel Ltd A radio device and a single-frequency radio transponder
JPH08237313A (ja) * 1995-02-24 1996-09-13 Oki Electric Ind Co Ltd 多値ｆｓｋ復調回路
JPH11313117A (ja) * 1998-02-27 1999-11-09 Kokusai Electric Co Ltd 周波数制御方法及び直交検波回路及びｆｓｋ受信機
JP3237827B2 (ja) * 1998-04-22 2001-12-10 日本電気株式会社 無線データ通信端末
US7397300B2 (en) * 2003-09-09 2008-07-08 Analog Devices, Inc. FSK demodulator system and method
US7680224B2 (en) * 2004-08-27 2010-03-16 Silicon Laboratories Inc. Apparatus and method for automatic frequency correction for a receiver system
CN100452789C (zh) * 2005-04-30 2009-01-14 北京航空航天大学 短程无线网络数据发送方法

Also Published As

Publication number Publication date
US20100239051A1 (en) 2010-09-23
GB2453767A (en) 2009-04-22
CN101843065B (zh) 2013-03-27
EP2208328A1 (de) 2010-07-21
WO2009050499A1 (en) 2009-04-23
US8483322B2 (en) 2013-07-09
EP2208328B1 (de) 2011-02-23
GB0720410D0 (en) 2007-11-28
JP5256294B2 (ja) 2013-08-07
DE602008005185D1 (de) 2011-04-07
CN101843065A (zh) 2010-09-22
JP2011501550A (ja) 2011-01-06

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