WO2003012984A3 - Adaptive automatic gain control - Google Patents

Adaptive automatic gain control Download PDF

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Publication number
WO2003012984A3
WO2003012984A3 PCT/SE2002/001327 SE0201327W WO03012984A3 WO 2003012984 A3 WO2003012984 A3 WO 2003012984A3 SE 0201327 W SE0201327 W SE 0201327W WO 03012984 A3 WO03012984 A3 WO 03012984A3
Authority
WO
WIPO (PCT)
Prior art keywords
amplifier
data
signal level
data block
received
Prior art date
Application number
PCT/SE2002/001327
Other languages
French (fr)
Other versions
WO2003012984A2 (en
Inventor
Jan Stoter
Der Wal Arnoud Van
De Hee Johan Van
Original Assignee
Ericsson Telefon Ab L M
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 Ericsson Telefon Ab L M filed Critical Ericsson Telefon Ab L M
Priority to AU2002316009A priority Critical patent/AU2002316009A1/en
Publication of WO2003012984A2 publication Critical patent/WO2003012984A2/en
Publication of WO2003012984A3 publication Critical patent/WO2003012984A3/en

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
    • 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

Abstract

An adaptive automatic gain control loop in a radio receiver includes an amplifier with an adjustable gain to variably increase or decrease the signal level of the received signal. Plural data blocks are received, with each data block potentially having a different signal level when received. Before or at the very beginning when substantive data in a data block are processed in the amplifier, the gain of that amplifier is rapidly adjusted or preset to a predetermined signal level for that data block. By adapting the gain of the amplifier before or just as the data in the block are processed by the amplifier to an appropriate level, the received signal can be adjusted to a desired dynamic range. For example, by adapting the received signal level to the dynamic range of an analog-to-digital converter of a receiver, e.g., a UTRA/TDD or TD-SCDMA receiver, the bit error rate at the start of the data block is decreased.
PCT/SE2002/001327 2001-07-31 2002-07-02 Adaptive automatic gain control WO2003012984A2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AU2002316009A AU2002316009A1 (en) 2001-07-31 2002-07-02 Adaptive automatic gain control

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US09/917,771 US20030026363A1 (en) 2001-07-31 2001-07-31 Adaptive automatic gain control
US09/917,771 2001-07-31

Publications (2)

Publication Number Publication Date
WO2003012984A2 WO2003012984A2 (en) 2003-02-13
WO2003012984A3 true WO2003012984A3 (en) 2008-01-17

Family

ID=25439293

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/SE2002/001327 WO2003012984A2 (en) 2001-07-31 2002-07-02 Adaptive automatic gain control

Country Status (3)

Country Link
US (1) US20030026363A1 (en)
AU (1) AU2002316009A1 (en)
WO (1) WO2003012984A2 (en)

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US6873833B2 (en) * 2003-03-27 2005-03-29 Interdigital Technology Corporation Method and apparatus for estimating and controlling initial time slot gain in a wireless communication system
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CN101192862B (en) * 2006-11-30 2013-01-16 昂达博思公司 Method and device for automatic gain control in wireless communication system
KR100888365B1 (en) * 2006-12-08 2009-03-12 한국전자통신연구원 Apparatus and Method for Controlling Voltage Gain of Ultra Wide Band Receiving Signal, and Ultra Wide Band Receiving Apparatus using that
US8144634B2 (en) * 2007-02-21 2012-03-27 Telefonaktiebolaget Lm Ericsson (Publ) Reducing automatic gain control process in time division duplex communication mode
KR101450570B1 (en) * 2007-12-28 2014-10-14 삼성전자주식회사 Method and apparatus for elimination of noise in GSM terminal
JP4911088B2 (en) * 2008-03-21 2012-04-04 富士通株式会社 Wireless communication apparatus and wireless communication method
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TWI499336B (en) * 2012-04-13 2015-09-01 Apple Inc Apparatus and methods for adjusting adaptive control loop behavior based on measured artifacts
US9544862B2 (en) * 2013-06-21 2017-01-10 Telefonaktiebolaget L M Ericsson (Publ) Method and device for performing automatic gain control
CN104539253B (en) * 2014-08-18 2017-06-06 中国科学院嘉兴微电子与系统工程中心 Three-level automatic gain control equipment and its control method
KR20170061129A (en) * 2014-09-30 2017-06-02 엘지전자 주식회사 Method for measuring inter-device interference in a wireless communication system supporting FDR transmission and apparatus therefor
KR102190358B1 (en) 2014-12-10 2020-12-11 삼성전자주식회사 Apparatus and method for cotrolling gain in communication system
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US10181970B2 (en) 2016-03-31 2019-01-15 Nxp B.V. Method and system for controlling an amplifier of a communications device
EP3226426B1 (en) * 2016-03-31 2019-12-04 Nxp B.V. Method and system for controlling an amplifier of a communications device
CN107911091B (en) * 2017-11-24 2021-09-24 京信网络系统股份有限公司 Method and circuit for adjusting gain

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Patent Citations (5)

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Publication number Priority date Publication date Assignee Title
EP0455388A2 (en) * 1990-05-01 1991-11-06 Orbitel Mobile Communications Limited Receiver
EP0496507A2 (en) * 1991-01-15 1992-07-29 Nokia Mobile Phones Ltd. Gain control in a TDMA radio-telephone system
EP0569688A1 (en) * 1992-04-29 1993-11-18 Hagenuk Telecom GmbH Method and apparatus for fading compensation for TDMA-receivers
US5697074A (en) * 1995-03-30 1997-12-09 Nokia Mobile Phones Limited Dual rate power control loop for a transmitter
GB2336260A (en) * 1998-04-06 1999-10-13 Nec Corp Gain control in a CDMA receiver in which, if the deviation is greater than a set amount, the feedback is adjusted to increase the speed of convergence

Also Published As

Publication number Publication date
AU2002316009A8 (en) 2008-03-13
WO2003012984A2 (en) 2003-02-13
AU2002316009A1 (en) 2003-02-17
US20030026363A1 (en) 2003-02-06

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