AU5262793A - Automatic gain control method and device for a digital receiver, especially a time division multiple access receiver - Google Patents

Automatic gain control method and device for a digital receiver, especially a time division multiple access receiver

Info

Publication number
AU5262793A
AU5262793A AU52627/93A AU5262793A AU5262793A AU 5262793 A AU5262793 A AU 5262793A AU 52627/93 A AU52627/93 A AU 52627/93A AU 5262793 A AU5262793 A AU 5262793A AU 5262793 A AU5262793 A AU 5262793A
Authority
AU
Australia
Prior art keywords
predetermined
sample
receiver
gain
gain control
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
AU52627/93A
Other versions
AU668243B2 (en
Inventor
Frederic Gourgue
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.)
Alcatel CIT SA
Original Assignee
Alcatel Radiotelephone SA
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 Alcatel Radiotelephone SA filed Critical Alcatel Radiotelephone SA
Publication of AU5262793A publication Critical patent/AU5262793A/en
Application granted granted Critical
Publication of AU668243B2 publication Critical patent/AU668243B2/en
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

Links

Classifications

    • 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
    • H03G3/3078—Circuits generating control signals for digitally modulated signals
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03G—CONTROL OF AMPLIFICATION
    • H03G1/00—Details of arrangements for controlling amplification
    • H03G1/0005—Circuits characterised by the type of controlling devices operated by a controlling current or voltage signal
    • H03G1/0088—Circuits characterised by the type of controlling devices operated by a controlling current or voltage signal using discontinuously variable devices, e.g. switch-operated

Abstract

Method of automatic gain control of a digital receiver (1) comprising amplifier means (2). The method comprises the following steps: - sampling at a predetermined sampling frequency of the output signal (s(t)) from the said amplifier means; - processing of the samples obtained including, for each sample, a comparison of the absolute value of this sample respectively to a predetermined maximum and minimum threshold; and - adjustment of the gain (G) of the amplifier means (2) carried out on completion of each sample processing, in such a way that: * if a sample is outside a maximum bracket [-SMAX, +SMAX], this gain (G) is reduced by a predetermined reduction level, * if several successive samples, of a predetermined number, lie within a minimum bracket [-SMIN, +SMIN], this gain (G) is increased by a predetermined increase level. Use especially in mobile telephony. <IMAGE>
AU52627/93A 1992-12-23 1993-12-22 Automatic gain control method and device for a digital receiver, especially a time division multiple access receiver Ceased AU668243B2 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR9215615 1992-12-23
FR9215615A FR2699768B1 (en) 1992-12-23 1992-12-23 Method of automatic gain control for a digital receiver, in particular a time-division multiple access receiver and device for its implementation.

Publications (2)

Publication Number Publication Date
AU5262793A true AU5262793A (en) 1994-07-07
AU668243B2 AU668243B2 (en) 1996-04-26

Family

ID=9437037

Family Applications (1)

Application Number Title Priority Date Filing Date
AU52627/93A Ceased AU668243B2 (en) 1992-12-23 1993-12-22 Automatic gain control method and device for a digital receiver, especially a time division multiple access receiver

Country Status (9)

Country Link
EP (1) EP0604295B1 (en)
JP (1) JPH06276171A (en)
AT (1) ATE160657T1 (en)
AU (1) AU668243B2 (en)
DE (1) DE69315417T2 (en)
ES (1) ES2109455T3 (en)
FI (1) FI935755A (en)
FR (1) FR2699768B1 (en)
NO (1) NO304959B1 (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5929706A (en) * 1996-04-24 1999-07-27 Sony Corporation Automatic gain control method and device
CN101632222B (en) * 2006-10-25 2016-04-13 Elo触摸解决方案公司 A kind of automatic gain control circuit and system thereof and auto gain control method

Families Citing this family (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4327541A1 (en) * 1993-08-16 1995-02-23 Aeg Mobile Communication Automatic gain control method in a receiver
SE502618C2 (en) * 1994-10-03 1995-11-27 Ericsson Telefon Ab L M Method and apparatus for obtaining a wide dynamic range of a receiver in a digital radio transmission system
AT407682B (en) * 1995-12-21 2001-05-25 Kapsch Ag INTERMEDIATE AMPLIFIER FOR A RELAY STATION
EP0929150A1 (en) * 1997-12-31 1999-07-14 TELEFONAKTIEBOLAGET L M ERICSSON (publ) A method of and a circuit for automatic gain control (AGC)
FI106325B (en) * 1998-11-12 2001-01-15 Nokia Networks Oy Method and apparatus for controlling power control
FR2802044B1 (en) * 1999-12-01 2002-05-24 Sagem METHOD FOR ADJUSTING A SOUND LEVEL IN A MOBILE TELEPHONE
FR2808154B1 (en) * 2000-04-21 2002-09-20 Sagem BELL-FREE MOBILE TELEPHONE
US8692809B2 (en) 2006-07-06 2014-04-08 Elo Touch Solutions, Inc. Auto-gain switching module for acoustic touch systems

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
IE64560B1 (en) * 1988-11-30 1995-08-23 Motorola Inc Digital automatic gain control
US5161170A (en) * 1990-01-16 1992-11-03 The Johns Hopkins University Discrete automatic gain control with high stability, high speed and low distortion
GB2243733A (en) * 1990-05-01 1991-11-06 Orbitel Mobile Communications Gain control based on average amplitude of i/p signal

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5929706A (en) * 1996-04-24 1999-07-27 Sony Corporation Automatic gain control method and device
CN101632222B (en) * 2006-10-25 2016-04-13 Elo触摸解决方案公司 A kind of automatic gain control circuit and system thereof and auto gain control method

Also Published As

Publication number Publication date
FR2699768B1 (en) 1995-02-10
ATE160657T1 (en) 1997-12-15
FR2699768A1 (en) 1994-06-24
NO934737D0 (en) 1993-12-21
FI935755A (en) 1994-06-24
DE69315417T2 (en) 1998-03-19
EP0604295A1 (en) 1994-06-29
FI935755A0 (en) 1993-12-20
DE69315417D1 (en) 1998-01-08
AU668243B2 (en) 1996-04-26
NO934737L (en) 1994-06-24
ES2109455T3 (en) 1998-01-16
NO304959B1 (en) 1999-03-08
JPH06276171A (en) 1994-09-30
EP0604295B1 (en) 1997-11-26

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Legal Events

Date Code Title Description
MK14 Patent ceased section 143(a) (annual fees not paid) or expired