DE3577167D1 - Verfahren zur schnellen verstaerkungseinstellung in einem modemempfaenger. - Google Patents

Verfahren zur schnellen verstaerkungseinstellung in einem modemempfaenger.

Info

Publication number
DE3577167D1
DE3577167D1 DE8585110808T DE3577167T DE3577167D1 DE 3577167 D1 DE3577167 D1 DE 3577167D1 DE 8585110808 T DE8585110808 T DE 8585110808T DE 3577167 T DE3577167 T DE 3577167T DE 3577167 D1 DE3577167 D1 DE 3577167D1
Authority
DE
Germany
Prior art keywords
gain adjustment
modem receiver
quick gain
quick
modem
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.)
Expired - Fee Related
Application number
DE8585110808T
Other languages
English (en)
Inventor
Pierre Rene Dr Chevillat
Dietrich Gerhard Ulric Maiwald
Gottfried Dr Ungerboeck
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.)
International Business Machines Corp
Original Assignee
International Business Machines Corp
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 International Business Machines Corp filed Critical International Business Machines Corp
Application granted granted Critical
Publication of DE3577167D1 publication Critical patent/DE3577167D1/de
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
    • H04L27/00—Modulated-carrier systems
    • H04L27/02—Amplitude-modulated carrier systems, e.g. using on-off keying; Single sideband or vestigial sideband modulation
    • H04L27/08—Amplitude regulation arrangements
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03G—CONTROL OF AMPLIFICATION
    • H03G3/00—Gain control in amplifiers or frequency changers without distortion of the input signal
    • H03G3/20—Automatic control
    • H03G3/30—Automatic control in amplifiers having semiconductor devices
    • H03G3/3052—Automatic control in amplifiers having semiconductor devices in bandpass amplifiers (H.F. or I.F.) or in frequency-changers used in a (super)heterodyne receiver
    • H03G3/3068—Circuits generating control signals for both R.F. and I.F. stages
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03G—CONTROL OF AMPLIFICATION
    • H03G3/00—Gain control in amplifiers or frequency changers without distortion of the input signal
    • H03G3/20—Automatic control
    • H03G3/30—Automatic control in amplifiers having semiconductor devices
    • H03G3/3089—Control of digital or coded signals
DE8585110808T 1985-08-28 1985-08-28 Verfahren zur schnellen verstaerkungseinstellung in einem modemempfaenger. Expired - Fee Related DE3577167D1 (de)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP85110808A EP0213224B1 (de) 1985-08-28 1985-08-28 Verfahren zur schnellen Verstärkungseinstellung in einem Modemempfänger

Publications (1)

Publication Number Publication Date
DE3577167D1 true DE3577167D1 (de) 1990-05-17

Family

ID=8193713

Family Applications (1)

Application Number Title Priority Date Filing Date
DE8585110808T Expired - Fee Related DE3577167D1 (de) 1985-08-28 1985-08-28 Verfahren zur schnellen verstaerkungseinstellung in einem modemempfaenger.

Country Status (4)

Country Link
US (1) US4775988A (de)
EP (1) EP0213224B1 (de)
JP (1) JPS6251319A (de)
DE (1) DE3577167D1 (de)

Families Citing this family (23)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3540722C2 (de) * 1985-11-16 1995-06-29 Daimler Benz Aerospace Ag Verfahren zur automatischen Pegelregelung
GB8800740D0 (en) * 1988-01-13 1988-02-10 Ncr Co Data modem receiver
GB8805767D0 (en) * 1988-03-10 1988-04-07 Ncr Co Phase perturbation compensation system
US5005168A (en) * 1988-05-02 1991-04-02 Itt Corporation Multirate wire line modem apparatus
EP0413875B1 (de) * 1989-08-21 1994-06-01 International Business Machines Corporation Taktsteuerung für Modemempfänger
FR2655217B1 (fr) * 1989-11-30 1992-02-07 Alcatel Transmission Dispositif de commande automatique de gain pour demodulateur equipant un recepteur pour installation de transmission numerique d'informations.
US5029162A (en) * 1990-03-06 1991-07-02 Confertech International Automatic gain control using root-mean-square circuitry in a digital domain conference bridge for a telephone network
US5267322A (en) * 1991-12-13 1993-11-30 Digital Sound Corporation Digital automatic gain control with lookahead, adaptive noise floor sensing, and decay boost initialization
US5509030A (en) * 1992-03-04 1996-04-16 Alcatel Network Systems, Inc. RF receiver AGC incorporating time domain equalizer circuity
JPH0775099A (ja) * 1993-05-07 1995-03-17 Philips Electron Nv マルチプレックス直交振幅変調テレビジョン送信用送信方式、送信機及び受信機
US5590418A (en) * 1993-09-30 1996-12-31 Motorola, Inc. Method and apparatus for stabilizing the gain of a control loop in a communication device
GB2297443B (en) * 1995-01-26 1999-09-08 Sony Uk Ltd Amplifier
US5867063A (en) * 1996-12-05 1999-02-02 Motorola, Inc. Gain distribution circuit
US6480528B1 (en) * 1999-06-11 2002-11-12 Qualcomm Incorporated Automatic gain control for improved decoding of multi-carrier signal
DE10043744C1 (de) * 2000-09-05 2002-07-11 Infineon Technologies Ag Empfangsschaltung für Mobilfunkempfänger mit automatischer Verstärkungssteuerung
US6414547B1 (en) 2000-09-29 2002-07-02 International Business Machines Corporation Variable gain RF amplifier
US7079599B2 (en) 2001-02-28 2006-07-18 Broadcom Corporation Multi-mode quadrature amplitude modulation receiver for high rate wireless personal area networks
US6597733B2 (en) 2001-03-05 2003-07-22 Ensemble Communications, Inc. Equalizer performance enhancements for broadband wireless applications
US7577100B2 (en) * 2001-07-27 2009-08-18 Stephen Pollmann System and method for measuring signal to noise values in an adaptive wireless communication system
US7660344B2 (en) * 2002-06-28 2010-02-09 Bwa Technology, Inc. AGC fine-tuning by the adaptive time domain equalizer
US7502426B2 (en) * 2003-09-09 2009-03-10 Interdigital Technology Corporation Method for estimating signal magnitude, noise power, and signal-to-noise ratio of received signals
US8798122B2 (en) * 2008-12-09 2014-08-05 Telefonaktiebolaget L M Ericsson (Publ) Symbol-timing recovery techniques for multi-branch receivers
TW201042913A (en) 2009-05-04 2010-12-01 Maxlinear Inc Self-calibrating gain control system

Family Cites Families (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3715665A (en) * 1971-06-15 1973-02-06 Bell Telephone Labor Inc Joint initial setting of attenuator coefficients and sampling time in automatic equalizers for synchronous data transmission systems
US4003006A (en) * 1975-10-06 1977-01-11 Bell Telephone Laboratories, Incorporated Pilot tone controlled adaptive amplitude equalizer
US4084137A (en) * 1976-08-24 1978-04-11 Communications Satellite Corporation Multidimensional code communication systems
US4213097A (en) * 1978-10-19 1980-07-15 Racal-Milgo, Inc. Hybrid automatic gain control circuit
US4191995A (en) * 1979-01-02 1980-03-04 Bell Telephone Laboratories, Incorporated Digital automatic gain control circuit
US4439864A (en) * 1980-04-03 1984-03-27 Codex Corporation Modem circuitry
JPS57162534A (en) * 1981-03-31 1982-10-06 Nec Corp Automatic gain control circuit
US4458355A (en) * 1981-06-11 1984-07-03 Hycom Incorporated Adaptive phase lock loop
JPS58143499A (ja) * 1982-02-18 1983-08-26 Nec Corp 集積回路
EP0101107A2 (de) * 1982-07-19 1984-02-22 Motorola, Inc. Verfahren zum Prüfen einer Halbleiterspeichermatrix
US4499586A (en) * 1983-02-28 1985-02-12 Hazeltine Corporation Microprocessor controlled AGC
JPS6059599A (ja) * 1983-09-13 1985-04-05 Nec Corp 不揮発性半導体メモリ
US4623934A (en) * 1983-11-16 1986-11-18 Rockwell International Corporation AGC update apparatus and method of using same
US4625240A (en) * 1984-07-25 1986-11-25 Eeco, Inc. Adaptive automatic gain control

Also Published As

Publication number Publication date
EP0213224A1 (de) 1987-03-11
JPH0556693B2 (de) 1993-08-20
EP0213224B1 (de) 1990-04-11
US4775988A (en) 1988-10-04
JPS6251319A (ja) 1987-03-06

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Legal Events

Date Code Title Description
8364 No opposition during term of opposition
8339 Ceased/non-payment of the annual fee