FI935755A - Automatic acknowledgment control method for numerical reception and device for the method - Google Patents

Automatic acknowledgment control method for numerical reception and device for the method Download PDF

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Publication number
FI935755A
FI935755A FI935755A FI935755A FI935755A FI 935755 A FI935755 A FI 935755A FI 935755 A FI935755 A FI 935755A FI 935755 A FI935755 A FI 935755A FI 935755 A FI935755 A FI 935755A
Authority
FI
Finland
Prior art keywords
predetermined
sample
gain
amplifier means
smin
Prior art date
Application number
FI935755A
Other languages
Finnish (fi)
Swedish (sv)
Other versions
FI935755A0 (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 FI935755A0 publication Critical patent/FI935755A0/en
Publication of FI935755A publication Critical patent/FI935755A/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>
FI935755A 1992-12-23 1993-12-20 Automatic acknowledgment control method for numerical reception and device for the method FI935755A (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 (2)

Publication Number Publication Date
FI935755A0 FI935755A0 (en) 1993-12-20
FI935755A true FI935755A (en) 1994-06-24

Family

ID=9437037

Family Applications (1)

Application Number Title Priority Date Filing Date
FI935755A FI935755A (en) 1992-12-23 1993-12-20 Automatic acknowledgment control method for numerical reception and device for 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
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

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
FR2699768A1 (en) 1994-06-24
EP0604295A1 (en) 1994-06-29
DE69315417T2 (en) 1998-03-19
NO934737D0 (en) 1993-12-21
AU5262793A (en) 1994-07-07
DE69315417D1 (en) 1998-01-08
ES2109455T3 (en) 1998-01-16
FI935755A0 (en) 1993-12-20
AU668243B2 (en) 1996-04-26
ATE160657T1 (en) 1997-12-15
JPH06276171A (en) 1994-09-30
EP0604295B1 (en) 1997-11-26
NO304959B1 (en) 1999-03-08
FR2699768B1 (en) 1995-02-10
NO934737L (en) 1994-06-24

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