ATE499784T1 - Automatische frequenzkorrektur - Google Patents
Automatische frequenzkorrekturInfo
- 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
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)
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)
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)
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 |
-
2007
- 2007-10-19 GB GB0720410A patent/GB2453767A/en not_active Withdrawn
-
2008
- 2008-07-28 WO PCT/GB2008/050630 patent/WO2009050499A1/en active Application Filing
- 2008-07-28 AT AT08788605T patent/ATE499784T1/de not_active IP Right Cessation
- 2008-07-28 EP EP08788605A patent/EP2208328B1/de active Active
- 2008-07-28 JP JP2010529455A patent/JP5256294B2/ja not_active Expired - Fee Related
- 2008-07-28 CN CN2008801122511A patent/CN101843065B/zh not_active Expired - Fee Related
- 2008-07-28 DE DE602008005185T patent/DE602008005185D1/de active Active
- 2008-07-28 US US12/682,699 patent/US8483322B2/en active Active
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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Legal Events
Date | Code | Title | Description |
---|---|---|---|
RER | Ceased as to paragraph 5 lit. 3 law introducing patent treaties |