TW200746622A - Modulation dependent automatic gain control - Google Patents

Modulation dependent automatic gain control

Info

Publication number
TW200746622A
TW200746622A TW096114029A TW96114029A TW200746622A TW 200746622 A TW200746622 A TW 200746622A TW 096114029 A TW096114029 A TW 096114029A TW 96114029 A TW96114029 A TW 96114029A TW 200746622 A TW200746622 A TW 200746622A
Authority
TW
Taiwan
Prior art keywords
setpoint
gain
priority
agc
order modulation
Prior art date
Application number
TW096114029A
Other languages
English (en)
Inventor
Todd Sutton
Original Assignee
Nextwave Broadband Inc
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 Nextwave Broadband Inc filed Critical Nextwave Broadband Inc
Publication of TW200746622A publication Critical patent/TW200746622A/zh

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L27/00—Modulated-carrier systems
    • H04L27/32—Carrier systems characterised by combinations of two or more of the types covered by groups H04L27/02, H04L27/10, H04L27/18 or H04L27/26
    • H04L27/34—Amplitude- and phase-modulated carrier systems, e.g. quadrature-amplitude modulated carrier systems
    • H04L27/38—Demodulator circuits; Receiver circuits
    • H04L27/3809—Amplitude regulation arrangements
    • 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
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L27/00—Modulated-carrier systems
    • H04L27/0008—Modulated-carrier systems arrangements for allowing a transmitter or receiver to use more than one type of modulation
TW096114029A 2006-05-05 2007-04-20 Modulation dependent automatic gain control TW200746622A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US11/381,959 US7881411B2 (en) 2006-05-05 2006-05-05 Modulation dependent automatic gain control

Publications (1)

Publication Number Publication Date
TW200746622A true TW200746622A (en) 2007-12-16

Family

ID=38661178

Family Applications (1)

Application Number Title Priority Date Filing Date
TW096114029A TW200746622A (en) 2006-05-05 2007-04-20 Modulation dependent automatic gain control

Country Status (5)

Country Link
US (1) US7881411B2 (zh)
EP (1) EP2022170B1 (zh)
AT (1) ATE520198T1 (zh)
TW (1) TW200746622A (zh)
WO (1) WO2007130843A2 (zh)

Families Citing this family (16)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2053739A4 (en) * 2006-12-15 2010-10-06 Panasonic Corp DIGITAL AGC DEVICE
US7541956B1 (en) * 2008-01-31 2009-06-02 Delta Electronics, Inc. Inverter system with variable input gain apparatus and method for the same
ATE474374T1 (de) * 2008-05-14 2010-07-15 Ericsson Telefon Ab L M Verfahren zur steuerung einer empfängerverstärkung
KR101544429B1 (ko) * 2008-10-17 2015-08-17 삼성전자주식회사 이동통신 시스템의 이득 제어 장치 및 방법
US8614961B1 (en) * 2008-12-31 2013-12-24 Qualcomm Incorporated Efficient communication over a shared medium
US8537284B2 (en) * 2009-03-20 2013-09-17 Advanced Micro Devices, Inc. Adjacent channel power scan
JP5278197B2 (ja) * 2009-06-29 2013-09-04 ソニー株式会社 非接触通信装置および非接触通信方法
US8812063B2 (en) 2010-05-26 2014-08-19 Qualcomm Incorporated Signal characteristic-based leading edge detection
US8879407B2 (en) 2010-05-26 2014-11-04 Qualcomm Incorporated Two-way ranging messaging scheme
US8886148B2 (en) 2010-05-26 2014-11-11 Qualcomm Incorporated Signal based gain control
US8837307B2 (en) 2010-05-26 2014-09-16 Qualcomm Incorporated Two-way ranging messaging scheme
US8831141B2 (en) 2010-06-25 2014-09-09 Qualcomm Incorporated Leading edge detection
US10462757B2 (en) * 2015-09-07 2019-10-29 Signalchip Innovations Private Limited Automatic gain control based on signal spectrum sensing
TWI575890B (zh) 2015-10-19 2017-03-21 瑞昱半導體股份有限公司 通訊接收端及其自動增益控制方法
DE102017219691B3 (de) * 2017-11-06 2019-05-02 Laird Dabendorf Gmbh Verfahren und Vorrichtungen zur Bestimmung der Modulationsart eines Signals und Konfiguration einer Verstärkungseinheit
CN110392421B (zh) * 2018-04-18 2022-06-28 大唐移动通信设备有限公司 一种基于agc的信号处理方法及设备

Family Cites Families (19)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH11136142A (ja) 1997-11-03 1999-05-21 Nec Shizuoka Ltd 利得制御回路及び利得制御方法
JP3024755B2 (ja) * 1998-06-24 2000-03-21 日本電気株式会社 Ａｇｃ回路及びその制御方法
US6052566A (en) 1998-06-26 2000-04-18 Lucent Technologies Inc. Combined RSSI/SNR-driven intermodulation-mitigation scheme for CDMA terminals
US6571083B1 (en) * 1999-05-05 2003-05-27 Motorola, Inc. Method and apparatus for automatic simulcast correction for a correlation detector
US6324230B1 (en) 2000-02-29 2001-11-27 Motorola, Inc. Multimode fast attack automatic gain control (AGC) loop for narrow band receivers
US6668164B2 (en) * 2000-06-01 2003-12-23 Motorola, Inc. Method and apparatus for reducing intermodulation distortion in a low current drain automatic gain control system
JP2001358791A (ja) * 2000-06-15 2001-12-26 Mitsubishi Electric Corp 自動利得制御回路
US6424221B1 (en) * 2000-06-19 2002-07-23 Advanced Micro Devices, Inc. Programmable gain amplifier for use in data network
CN1251415C (zh) 2001-01-12 2006-04-12 高通股份有限公司 直接变换数字域控制
US6498927B2 (en) * 2001-03-28 2002-12-24 Gct Semiconductor, Inc. Automatic gain control method for highly integrated communication receiver
US7027530B2 (en) * 2001-04-11 2006-04-11 Atheros Communications, Inc. Method and apparatus for maximizing receiver performance utilizing mid-packet gain changes
JP3805258B2 (ja) * 2002-01-29 2006-08-02 松下電器産業株式会社 ダイレクトコンバージョン受信機
US6868263B2 (en) 2002-06-10 2005-03-15 Qualcomm Incorporated Digital automatic gain control
US7630321B2 (en) 2002-09-10 2009-12-08 Qualcomm Incorporated System and method for rate assignment
US7227916B2 (en) * 2003-08-26 2007-06-05 Freescale Semiconductor, Inc. Receiver with automatic gain control that operates with multiple protocols and method thereof
US7386063B1 (en) * 2003-10-31 2008-06-10 Atheros Communications, Inc. Voting block for identifying WLAN signal modulation type
US7349503B2 (en) 2003-11-07 2008-03-25 Atheros Communications, Inc. Adaptive interference immunity control
TWI373925B (en) 2004-02-10 2012-10-01 Tridev Res L L C Tunable resonant circuit, tunable voltage controlled oscillator circuit, tunable low noise amplifier circuit and method of tuning a resonant circuit
US7127223B2 (en) * 2004-09-09 2006-10-24 Navini Networks, Inc. Proactive gain control system for communications receivers

Also Published As

Publication number Publication date
US20070258548A1 (en) 2007-11-08
EP2022170B1 (en) 2011-08-10
WO2007130843A2 (en) 2007-11-15
US7881411B2 (en) 2011-02-01
WO2007130843A3 (en) 2008-02-14
EP2022170A2 (en) 2009-02-11
ATE520198T1 (de) 2011-08-15

Similar Documents

Publication Publication Date Title
TW200746622A (en) Modulation dependent automatic gain control
UA84130C2 (ru) Способ и устройство регулирования усиления в устройстве связи (варианты)
WO2009111500A3 (en) System and method of reducing power consumption for audio playback
EP1976113A3 (en) Variable gain amplifier and method for achieving variable gain amplification with high bandwidth and linearity
WO2007092794A3 (en) Amplifier compression controller circuit
EP2209231A3 (en) Gain and signal level adjustments of cascaded optical amplifiers
TW200721665A (en) System and method for managing volume
TW200635211A (en) Automatic gain control analog-to-digital converting system and related method
ATE545945T1 (de) Plasmazufuhrvorrichtung
TW200705800A (en) Automatic gain controllers and methods for controlling voltage of control gain amplifiers
WO2009126007A3 (en) Method of power amplifier predistortion adaptation using compression detection and circuit thereof
CA2616323A1 (en) Input drive control for switcher regulated power amplifier modules
WO2007089994A3 (en) Supply voltage control for a power amplifier
MX350424B (es) Regulación de función de transferencia.
WO2012075436A3 (en) Systems and methods for power control in a multiple standard mobile transmitter
WO2004071108A3 (en) Apparatus, and an associated method, for increasing receiver sensitivity of a direct conversion receiver
WO2008015648A3 (en) Improvements in or relating to automatic gain control of radio devices
WO2009014740A3 (en) Reduced distortion radio frequency amplifiers
GB2442924A (en) A method and apparatus for increasing the efficiency of low power amplifiers
GB2456278A (en) Method and apparatus for automatically controlling an xnn enhancement circuitry feeding a power amplifier
TWI268657B (en) Variable gain amplifier
TW200704047A (en) Radio transmission apparatus with variable frequency bandwidth of transmission signal or variable method of modulating transmission signal
IL194923A0 (en) Device and method for amplification of radiocommunication signals
KR20110027023A (ko) 음성처리장치 및 방법
GB2450063A (en) Amplified gain control