NO934737D0 - Method and apparatus for automatic gain control of a digital receiver, in particular a receiver for time-shared multiplex receive feedback - Google Patents

Method and apparatus for automatic gain control of a digital receiver, in particular a receiver for time-shared multiplex receive feedback

Info

Publication number
NO934737D0
NO934737D0 NO934737A NO934737A NO934737D0 NO 934737 D0 NO934737 D0 NO 934737D0 NO 934737 A NO934737 A NO 934737A NO 934737 A NO934737 A NO 934737A NO 934737 D0 NO934737 D0 NO 934737D0
Authority
NO
Norway
Prior art keywords
receiver
predetermined
sample
gain
gain control
Prior art date
Application number
NO934737A
Other languages
Norwegian (no)
Other versions
NO304959B1 (en
NO934737L (en
Inventor
Frederic Gourgue
Original Assignee
Alcatel Radiotelephone
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 filed Critical Alcatel Radiotelephone
Publication of NO934737D0 publication Critical patent/NO934737D0/en
Publication of NO934737L publication Critical patent/NO934737L/en
Publication of NO304959B1 publication Critical patent/NO304959B1/en

Links

Classifications

    • 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
    • H03G3/3078—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

Landscapes

  • Control Of Amplification And Gain Control (AREA)
  • Circuits Of Receivers In General (AREA)
  • Communication Control (AREA)
  • Numerical Control (AREA)
  • Exchange Systems With Centralized Control (AREA)
  • Sorption Type Refrigeration Machines (AREA)
  • Time-Division Multiplex Systems (AREA)

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>
NO934737A 1992-12-23 1993-12-21 Method of automatic gain control in a digital receiver, especially a TDM receiver, and device for carrying out the method NO304959B1 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
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 (3)

Publication Number Publication Date
NO934737D0 true NO934737D0 (en) 1993-12-21
NO934737L NO934737L (en) 1994-06-24
NO304959B1 NO304959B1 (en) 1999-03-08

Family

ID=9437037

Family Applications (1)

Application Number Title Priority Date Filing Date
NO934737A NO304959B1 (en) 1992-12-23 1993-12-21 Method of automatic gain control in a digital receiver, especially a TDM receiver, and device for carrying out the method

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)

Families Citing this family (10)

* 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
SE9403337L (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
JPH09289426A (en) * 1996-04-24 1997-11-04 Sony Corp Method and unit for automatic gain control
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
KR20090088882A (en) * 2006-10-25 2009-08-20 센시티브 오브젝트 Automatic gain control circuit, system including such circuit and method for automatic gain control

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

Also Published As

Publication number Publication date
ATE160657T1 (en) 1997-12-15
FR2699768A1 (en) 1994-06-24
ES2109455T3 (en) 1998-01-16
AU5262793A (en) 1994-07-07
NO304959B1 (en) 1999-03-08
AU668243B2 (en) 1996-04-26
EP0604295B1 (en) 1997-11-26
NO934737L (en) 1994-06-24
DE69315417T2 (en) 1998-03-19
JPH06276171A (en) 1994-09-30
FI935755A (en) 1994-06-24
DE69315417D1 (en) 1998-01-08
FI935755A0 (en) 1993-12-20
EP0604295A1 (en) 1994-06-29
FR2699768B1 (en) 1995-02-10

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Legal Events

Date Code Title Description
MM1K Lapsed by not paying the annual fees

Free format text: LAPSED IN JUNE 2001