CA2047308A1 - Appareil et methode de demodulation de signaux a modulation numerique - Google Patents

Appareil et methode de demodulation de signaux a modulation numerique

Info

Publication number
CA2047308A1
CA2047308A1 CA2047308A CA2047308A CA2047308A1 CA 2047308 A1 CA2047308 A1 CA 2047308A1 CA 2047308 A CA2047308 A CA 2047308A CA 2047308 A CA2047308 A CA 2047308A CA 2047308 A1 CA2047308 A1 CA 2047308A1
Authority
CA
Canada
Prior art keywords
clock
voltage level
sampled
timing
signal
Prior art date
Legal status (The legal status 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 status listed.)
Granted
Application number
CA2047308A
Other languages
English (en)
Other versions
CA2047308C (fr
Inventor
Masaaki Makino
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Toshiba TEC Corp
Original Assignee
Individual
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 Individual filed Critical Individual
Publication of CA2047308A1 publication Critical patent/CA2047308A1/fr
Application granted granted Critical
Publication of CA2047308C publication Critical patent/CA2047308C/fr
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

Links

Classifications

    • 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
    • H04L7/0334—Processing of samples having at least three levels, e.g. soft decisions

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Digital Transmission Methods That Use Modulated Carrier Waves (AREA)
  • Synchronisation In Digital Transmission Systems (AREA)
  • Stereo-Broadcasting Methods (AREA)
CA002047308A 1990-07-19 1991-07-17 Appareil et methode de demodulation de signaux a modulation numerique Expired - Fee Related CA2047308C (fr)

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
JP2-191094 1990-07-19
JP19109490 1990-07-19
JP11057591A JP2679889B2 (ja) 1990-07-19 1991-05-15 無線通信装置及びその装置の受信制御方式
JP3-110575 1991-05-15

Publications (2)

Publication Number Publication Date
CA2047308A1 true CA2047308A1 (fr) 1992-01-20
CA2047308C CA2047308C (fr) 1997-05-06

Family

ID=26450179

Family Applications (1)

Application Number Title Priority Date Filing Date
CA002047308A Expired - Fee Related CA2047308C (fr) 1990-07-19 1991-07-17 Appareil et methode de demodulation de signaux a modulation numerique

Country Status (7)

Country Link
US (1) US5111152A (fr)
EP (1) EP0467306B1 (fr)
JP (1) JP2679889B2 (fr)
KR (1) KR950005162B1 (fr)
CA (1) CA2047308C (fr)
DE (1) DE69126071T2 (fr)
NO (1) NO303370B1 (fr)

Families Citing this family (50)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2692420A1 (fr) * 1992-06-11 1993-12-17 Sgs Thomson Microelectronics Procédé et dispositif d'asservissement en fréquence et phase d'un oscillateur.
DE4221476A1 (de) * 1992-06-30 1994-01-05 Siemens Ag Verfahren und Anordnung zur Regeneration eines Binärsignals
JP2639326B2 (ja) * 1993-11-30 1997-08-13 日本電気株式会社 四値ｆｓｋ受信機
US5453715A (en) * 1994-08-15 1995-09-26 Motorola, Inc. Communication device with efficient multi-level digital demodulator
KR0178750B1 (ko) * 1996-02-13 1999-05-15 김광호 전-디지탈 심볼타이밍 복구장치
GB2322042B (en) * 1997-02-05 2002-02-06 Ericsson Telefon Ab L M Radio architecture
US6694128B1 (en) 1998-08-18 2004-02-17 Parkervision, Inc. Frequency synthesizer using universal frequency translation technology
US6061551A (en) 1998-10-21 2000-05-09 Parkervision, Inc. Method and system for down-converting electromagnetic signals
US7515896B1 (en) 1998-10-21 2009-04-07 Parkervision, Inc. Method and system for down-converting an electromagnetic signal, and transforms for same, and aperture relationships
US6091940A (en) 1998-10-21 2000-07-18 Parkervision, Inc. Method and system for frequency up-conversion
US6542722B1 (en) 1998-10-21 2003-04-01 Parkervision, Inc. Method and system for frequency up-conversion with variety of transmitter configurations
US6560301B1 (en) 1998-10-21 2003-05-06 Parkervision, Inc. Integrated frequency translation and selectivity with a variety of filter embodiments
US7236754B2 (en) 1999-08-23 2007-06-26 Parkervision, Inc. Method and system for frequency up-conversion
US7039372B1 (en) 1998-10-21 2006-05-02 Parkervision, Inc. Method and system for frequency up-conversion with modulation embodiments
US7295826B1 (en) 1998-10-21 2007-11-13 Parkervision, Inc. Integrated frequency translation and selectivity with gain control functionality, and applications thereof
US7321735B1 (en) 1998-10-21 2008-01-22 Parkervision, Inc. Optical down-converter using universal frequency translation technology
US6061555A (en) 1998-10-21 2000-05-09 Parkervision, Inc. Method and system for ensuring reception of a communications signal
US6813485B2 (en) 1998-10-21 2004-11-02 Parkervision, Inc. Method and system for down-converting and up-converting an electromagnetic signal, and transforms for same
US6370371B1 (en) 1998-10-21 2002-04-09 Parkervision, Inc. Applications of universal frequency translation
US6049706A (en) 1998-10-21 2000-04-11 Parkervision, Inc. Integrated frequency translation and selectivity
US6704558B1 (en) 1999-01-22 2004-03-09 Parkervision, Inc. Image-reject down-converter and embodiments thereof, such as the family radio service
US6704549B1 (en) 1999-03-03 2004-03-09 Parkvision, Inc. Multi-mode, multi-band communication system
US7006805B1 (en) 1999-01-22 2006-02-28 Parker Vision, Inc. Aliasing communication system with multi-mode and multi-band functionality and embodiments thereof, such as the family radio service
JP3179429B2 (ja) * 1999-01-29 2001-06-25 日本電気アイシーマイコンシステム株式会社 周波数測定用テスト回路及びそれを備えた半導体集積回路
US6879817B1 (en) 1999-04-16 2005-04-12 Parkervision, Inc. DC offset, re-radiation, and I/Q solutions using universal frequency translation technology
US6873836B1 (en) 1999-03-03 2005-03-29 Parkervision, Inc. Universal platform module and methods and apparatuses relating thereto enabled by universal frequency translation technology
US6853690B1 (en) 1999-04-16 2005-02-08 Parkervision, Inc. Method, system and apparatus for balanced frequency up-conversion of a baseband signal and 4-phase receiver and transceiver embodiments
US7110435B1 (en) 1999-03-15 2006-09-19 Parkervision, Inc. Spread spectrum applications of universal frequency translation
US7693230B2 (en) 1999-04-16 2010-04-06 Parkervision, Inc. Apparatus and method of differential IQ frequency up-conversion
US7110444B1 (en) 1999-08-04 2006-09-19 Parkervision, Inc. Wireless local area network (WLAN) using universal frequency translation technology including multi-phase embodiments and circuit implementations
US7065162B1 (en) 1999-04-16 2006-06-20 Parkervision, Inc. Method and system for down-converting an electromagnetic signal, and transforms for same
US7072390B1 (en) 1999-08-04 2006-07-04 Parkervision, Inc. Wireless local area network (WLAN) using universal frequency translation technology including multi-phase embodiments
US8295406B1 (en) 1999-08-04 2012-10-23 Parkervision, Inc. Universal platform module for a plurality of communication protocols
US7054296B1 (en) 1999-08-04 2006-05-30 Parkervision, Inc. Wireless local area network (WLAN) technology and applications including techniques of universal frequency translation
US7082171B1 (en) 1999-11-24 2006-07-25 Parkervision, Inc. Phase shifting applications of universal frequency translation
US6963734B2 (en) 1999-12-22 2005-11-08 Parkervision, Inc. Differential frequency down-conversion using techniques of universal frequency translation technology
US7292835B2 (en) 2000-01-28 2007-11-06 Parkervision, Inc. Wireless and wired cable modem applications of universal frequency translation technology
US7010286B2 (en) 2000-04-14 2006-03-07 Parkervision, Inc. Apparatus, system, and method for down-converting and up-converting electromagnetic signals
US7554508B2 (en) 2000-06-09 2009-06-30 Parker Vision, Inc. Phased array antenna applications on universal frequency translation
US7454453B2 (en) 2000-11-14 2008-11-18 Parkervision, Inc. Methods, systems, and computer program products for parallel correlation and applications thereof
US7010559B2 (en) 2000-11-14 2006-03-07 Parkervision, Inc. Method and apparatus for a parallel correlator and applications thereof
CN100347667C (zh) * 2001-06-27 2007-11-07 索尼公司 集成电路器件、信息处理设备、信息存储器件的存储管理方法、移动终端设备、半导体集成电路器件、以及使用移动终端设备的通信方法
US7085335B2 (en) 2001-11-09 2006-08-01 Parkervision, Inc. Method and apparatus for reducing DC offsets in a communication system
US7072427B2 (en) 2001-11-09 2006-07-04 Parkervision, Inc. Method and apparatus for reducing DC offsets in a communication system
JP2003229920A (ja) * 2002-02-01 2003-08-15 General Res Of Electronics Inc Ｆｓｋ復調信号の中心レベル検出補正回路
US6975848B2 (en) 2002-06-04 2005-12-13 Parkervision, Inc. Method and apparatus for DC offset removal in a radio frequency communication channel
US7321640B2 (en) 2002-06-07 2008-01-22 Parkervision, Inc. Active polyphase inverter filter for quadrature signal generation
US7379883B2 (en) 2002-07-18 2008-05-27 Parkervision, Inc. Networking methods and systems
US7460584B2 (en) 2002-07-18 2008-12-02 Parkervision, Inc. Networking methods and systems
WO2007037312A1 (fr) 2005-09-28 2007-04-05 Nec Corporation Dispositif et procede de reproduction d'horloge

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS60183862A (ja) * 1984-03-02 1985-09-19 Toshiba Corp デイジタル信号処理回路
NL8603110A (nl) * 1986-12-08 1988-07-01 Philips Nv Schakeling voor het terugwinnen van een draaggolf.
WO1988005235A1 (fr) * 1987-01-12 1988-07-14 Fujitsu Limited Circuit de commande de la temporisation de discrimination
JPH01240024A (ja) * 1988-03-22 1989-09-25 Nippon Telegr & Teleph Corp <Ntt> クロック再生回路
US5001724A (en) * 1989-01-13 1991-03-19 Hewlett-Packard Company Method and apparatus for measuring phase accuracy and amplitude profile of a continuous-phase-modulated signal
US4887050A (en) * 1989-03-31 1989-12-12 Motorola, Inc. Frequency control apparatus and method for a digital radio receiver

Also Published As

Publication number Publication date
NO912819L (no) 1992-01-20
EP0467306B1 (fr) 1997-05-14
JP2679889B2 (ja) 1997-11-19
CA2047308C (fr) 1997-05-06
JPH04229750A (ja) 1992-08-19
DE69126071T2 (de) 1997-08-28
EP0467306A2 (fr) 1992-01-22
EP0467306A3 (en) 1993-06-02
US5111152A (en) 1992-05-05
NO303370B1 (no) 1998-06-29
NO912819D0 (no) 1991-07-18
KR950005162B1 (ko) 1995-05-19
DE69126071D1 (de) 1997-06-19

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