JPH0556693B2 - - Google Patents

Info

Publication number
JPH0556693B2
JPH0556693B2 JP61168231A JP16823186A JPH0556693B2 JP H0556693 B2 JPH0556693 B2 JP H0556693B2 JP 61168231 A JP61168231 A JP 61168231A JP 16823186 A JP16823186 A JP 16823186A JP H0556693 B2 JPH0556693 B2 JP H0556693B2
Authority
JP
Japan
Prior art keywords
gain
signal
digital
coefficient
correction coefficient
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
JP61168231A
Other languages
English (en)
Japanese (ja)
Other versions
JPS6251319A (ja
Inventor
Rune Sheruira Pieeru
Gee Maibaruto Deiitoritsuhi
Ungeruboku Gotsutofuriido
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
Publication of JPS6251319A publication Critical patent/JPS6251319A/ja
Publication of JPH0556693B2 publication Critical patent/JPH0556693B2/ja
Granted 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
    • 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
    • H03G3/20—Automatic control
    • H03G3/30—Automatic control in amplifiers having semiconductor devices
    • H03G3/3089—Control of digital or coded signals

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Digital Transmission Methods That Use Modulated Carrier Waves (AREA)
  • Cable Transmission Systems, Equalization Of Radio And Reduction Of Echo (AREA)
JP61168231A 1985-08-28 1986-07-18 モデム受信機における利得調節方法 Granted JPS6251319A (ja)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
EP85110808A EP0213224B1 (en) 1985-08-28 1985-08-28 Method for rapid gain acquisition in a modem receiver
EP85110808.4 1985-08-28

Publications (2)

Publication Number Publication Date
JPS6251319A JPS6251319A (ja) 1987-03-06
JPH0556693B2 true JPH0556693B2 (h) 1993-08-20

Family

ID=8193713

Family Applications (1)

Application Number Title Priority Date Filing Date
JP61168231A Granted JPS6251319A (ja) 1985-08-28 1986-07-18 モデム受信機における利得調節方法

Country Status (4)

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

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 (en) * 1989-08-21 1994-06-01 International Business Machines Corporation Timing control for modem receivers
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
EP2374239B1 (en) * 2008-12-09 2013-02-20 Telefonaktiebolaget L M Ericsson (PUBL) Symbol-timing recovery techniques for multi-branch receivers
US8198940B2 (en) 2009-05-04 2012-06-12 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 (en) * 1982-07-19 1984-02-22 Motorola, Inc. Method of testing a semiconductor memory array
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 (en) 1987-03-11
US4775988A (en) 1988-10-04
JPS6251319A (ja) 1987-03-06
EP0213224B1 (en) 1990-04-11
DE3577167D1 (de) 1990-05-17

Similar Documents

Publication Publication Date Title
JPH0556693B2 (h)
US7483500B2 (en) Narrowband gain control of receiver with digital post filtering
US6304615B1 (en) Serial digital data communications receiver with improved automatic cable equalizer, AGC system, and DC restorer
US6459727B1 (en) Very high speed digital subscriber line receiver, and programmable gain amplifier and narrow-band noise remover thereof
JPS6147454B2 (h)
JPH08107429A (ja) 可変マルチスレショルド検出回路、および可変マルチスレショルドを用いてサンプリングされたベースバンド信号の複数個のビットを検出する方法
US6768441B2 (en) Methods of receiving communications signals including a plurality of digital filters having different bandwidths and related receivers
JP3099831B2 (ja) 自動等化器
JP2000515708A (ja) コントローラブル増幅手段を持つ受信機
JP4614940B2 (ja) 増幅度の調整方法および回路
US6741644B1 (en) Pre-emphasis filter and method for ISI cancellation in low-pass channel applications
CN102624655A (zh) 确定通信接收器的一个或多个运行设置的前端模块及方法
DE112004001247B4 (de) Auswahl der Anfangsverstärkung für drahtlosen Empfänger
US5245556A (en) Adaptive equalizer method and apparatus
US6836519B1 (en) Automatic digital scaling for digital communication systems
US20030086509A1 (en) Communications receiver architectures and algorithms permitting hardware adjustments for optimizing performance
US7433401B1 (en) Mixed-mode signal processor architecture and device
US7123671B2 (en) Automatic gain control method for digital subscriber line modems
US5530721A (en) Equalizer and terminal device for mobile communications
JP3264142B2 (ja) Ｐｌｌ制御方式
WO2003071695A1 (en) Point-to-multipoint burst modem automatic gain control
JP2977396B2 (ja) 無線受信機
EP1499014A1 (en) A method for automatic gain control, for instance in a telecommunication system, device and computer program therefor
JPH0273748A (ja) ディジタル伝送装置
KR100556377B1 (ko) 심벌 타이밍 복원기

Legal Events

Date Code Title Description
LAPS Cancellation because of no payment of annual fees