ATE539530T1 - Vorrichtung und verfahren für diskontinuitätseffekte am ausgang einer automatischen verstärkungsregelung in einem multicarrier-system - Google Patents

Vorrichtung und verfahren für diskontinuitätseffekte am ausgang einer automatischen verstärkungsregelung in einem multicarrier-system

Info

Publication number
ATE539530T1
ATE539530T1 AT08731357T AT08731357T ATE539530T1 AT E539530 T1 ATE539530 T1 AT E539530T1 AT 08731357 T AT08731357 T AT 08731357T AT 08731357 T AT08731357 T AT 08731357T AT E539530 T1 ATE539530 T1 AT E539530T1
Authority
AT
Austria
Prior art keywords
gain control
automatic gain
effects
combining
output
Prior art date
Application number
AT08731357T
Other languages
English (en)
Inventor
Matthias Brehler
Original Assignee
Qualcomm 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
Priority claimed from US11/777,263 external-priority patent/US20080219332A1/en
Application filed by Qualcomm Inc filed Critical Qualcomm Inc
Application granted granted Critical
Publication of ATE539530T1 publication Critical patent/ATE539530T1/de

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L27/00—Modulated-carrier systems
    • H04L27/26—Systems using multi-frequency codes
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L27/00—Modulated-carrier systems
    • H04L27/26—Systems using multi-frequency codes
    • H04L27/2601—Multicarrier modulation systems
    • H04L27/2647—Arrangements specific to the receiver only
    • H04L27/2655—Synchronisation arrangements
    • H04L27/2689—Link with other circuits, i.e. special connections between synchronisation arrangements and other circuits for achieving synchronisation
    • H04L27/2695—Link with other circuits, i.e. special connections between synchronisation arrangements and other circuits for achieving synchronisation with channel estimation, e.g. determination of delay spread, derivative or peak tracking
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03G—CONTROL OF AMPLIFICATION
    • H03G3/00—Gain control in amplifiers or frequency changers
    • H03G3/20—Automatic control
    • 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
    • H03G3/3089—Control of digital or coded signals
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L25/00—Baseband systems
    • H04L25/02—Details ; arrangements for supplying electrical power along data transmission lines
    • H04L25/0202—Channel estimation
    • H04L25/0224—Channel estimation using sounding signals
    • H04L25/0228—Channel estimation using sounding signals with direct estimation from sounding signals
    • H04L25/023—Channel estimation using sounding signals with direct estimation from sounding signals with extension to other symbols
    • H04L25/0232—Channel estimation using sounding signals with direct estimation from sounding signals with extension to other symbols by interpolation between sounding signals
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L27/00—Modulated-carrier systems
    • H04L27/26—Systems using multi-frequency codes
    • H04L27/2601—Multicarrier modulation systems
    • H04L27/2647—Arrangements specific to the receiver only
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L27/00—Modulated-carrier systems
    • H04L27/26—Systems using multi-frequency codes
    • H04L27/2601—Multicarrier modulation systems
    • H04L27/2647—Arrangements specific to the receiver only
    • H04L27/2655—Synchronisation arrangements
    • H04L27/2662—Symbol synchronisation
    • H04L27/2665—Fine synchronisation, e.g. by positioning the FFT window
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L5/00—Arrangements affording multiple use of the transmission path
    • H04L5/003—Arrangements for allocating sub-channels of the transmission path
    • H04L5/0048—Allocation of pilot signals, i.e. of signals known to the receiver
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L5/00—Arrangements affording multiple use of the transmission path
    • H04L5/0001—Arrangements for dividing the transmission path
    • H04L5/0003—Two-dimensional division
    • H04L5/0005—Time-frequency
    • H04L5/0007—Time-frequency the frequencies being orthogonal, e.g. OFDM(A) or DMT

Landscapes

  • Engineering & Computer Science (AREA)
  • Signal Processing (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Power Engineering (AREA)
  • Circuits Of Receivers In General (AREA)
  • Synchronisation In Digital Transmission Systems (AREA)
  • Mobile Radio Communication Systems (AREA)
  • Cash Registers Or Receiving Machines (AREA)
  • Control Of Metal Rolling (AREA)
  • Cable Transmission Systems, Equalization Of Radio And Reduction Of Echo (AREA)
  • Control Of Amplification And Gain Control (AREA)
  • Detection And Prevention Of Errors In Transmission (AREA)
AT08731357T 2007-03-05 2008-03-04 Vorrichtung und verfahren für diskontinuitätseffekte am ausgang einer automatischen verstärkungsregelung in einem multicarrier-system ATE539530T1 (de)

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
US89306007P 2007-03-05 2007-03-05
US89305807P 2007-03-05 2007-03-05
US11/777,263 US20080219332A1 (en) 2007-03-05 2007-07-12 Apparatus and methods accounting for automatic gain control in a multi carrier system
PCT/US2008/055807 WO2008109607A1 (en) 2007-03-05 2008-03-04 Apparatus and methods accounting for effects of discontinuities at the output of automatic gain control in a multi carrier system

Publications (1)

Publication Number Publication Date
ATE539530T1 true ATE539530T1 (de) 2012-01-15

Family

ID=41161266

Family Applications (1)

Application Number Title Priority Date Filing Date
AT08731357T ATE539530T1 (de) 2007-03-05 2008-03-04 Vorrichtung und verfahren für diskontinuitätseffekte am ausgang einer automatischen verstärkungsregelung in einem multicarrier-system

Country Status (11)

Country Link
EP (2) EP2130339A1 (de)
JP (2) JP5242599B2 (de)
KR (2) KR101129207B1 (de)
CN (1) CN101641920B (de)
AT (1) ATE539530T1 (de)
BR (2) BRPI0808485A2 (de)
CA (2) CA2677971A1 (de)
ES (1) ES2376016T3 (de)
RU (2) RU2009136569A (de)
TW (2) TWI379559B (de)
WO (2) WO2008109607A1 (de)

Families Citing this family (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20100182899A1 (en) * 2009-01-17 2010-07-22 Qualcomm Incorporated OFDM Time Basis Matching With Pre-FFT Cyclic Shift
CN101662446B (zh) * 2009-09-28 2013-01-16 中兴通讯股份有限公司 信道估计方法及装置
JP5487996B2 (ja) * 2010-01-25 2014-05-14 富士通株式会社 適応等化器および適応等化方法
US8718210B2 (en) 2011-09-20 2014-05-06 Qualcomm Incorporated Channel impulse response estimation for wireless receiver
US20130107785A1 (en) * 2011-11-02 2013-05-02 Qualcomm Incorporated Tracking loop enhancements for mitigating signal interference and adjusting signal power
CN103368874B (zh) * 2012-03-30 2016-07-06 富士通株式会社 信道估计装置、方法及用户设备
CN103379607B (zh) * 2012-04-17 2018-01-30 中兴通讯股份有限公司 Td‑hspa+终端设备的增益控制方法和装置
GB2497149B (en) * 2012-05-22 2013-11-20 Aeroflex Ltd A noise power estimation method

Family Cites Families (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4630305A (en) * 1985-07-01 1986-12-16 Motorola, Inc. Automatic gain selector for a noise suppression system
DE60112451T2 (de) * 2001-11-30 2006-04-06 Freescale Semiconductors, Inc., Austin Transientenkompensation für Leistungverstärker in OFDM-Systemen
US8428001B2 (en) * 2005-03-10 2013-04-23 Qualcomm Incorporated Timing corrections in a multi carrier system and propagation to a channel estimation time filter
US8165167B2 (en) 2005-03-10 2012-04-24 Qualcomm Incorporated Time tracking for a communication system
JP4610401B2 (ja) * 2005-04-13 2011-01-12 株式会社エヌ・ティ・ティ・ドコモ チャネル推定装置
CN100518151C (zh) * 2005-05-01 2009-07-22 中兴通讯股份有限公司 多输入多输出的信道估计装置、系统及方法
JP2006352746A (ja) * 2005-06-20 2006-12-28 Fujitsu Ltd 直交周波数分割多重伝送用受信機
US8355454B2 (en) * 2006-08-03 2013-01-15 Panasonic Corporation Reception device, reception method and integrated circuit

Also Published As

Publication number Publication date
CN101641920B (zh) 2013-05-22
TWI379559B (en) 2012-12-11
ES2376016T3 (es) 2012-03-08
CA2677971A1 (en) 2008-09-12
WO2008109607A1 (en) 2008-09-12
KR101126989B1 (ko) 2012-04-12
JP2010520723A (ja) 2010-06-10
EP2130338B1 (de) 2011-12-28
EP2130338A1 (de) 2009-12-09
RU2009136568A (ru) 2011-04-10
EP2130339A1 (de) 2009-12-09
WO2008109600A1 (en) 2008-09-12
BRPI0808485A2 (pt) 2014-07-01
TW200913583A (en) 2009-03-16
KR101129207B1 (ko) 2012-04-12
KR20090115772A (ko) 2009-11-05
JP5204131B2 (ja) 2013-06-05
CA2678113A1 (en) 2008-09-12
TWI370650B (en) 2012-08-11
RU2009136569A (ru) 2011-04-10
JP2010520722A (ja) 2010-06-10
JP5242599B2 (ja) 2013-07-24
TW200849903A (en) 2008-12-16
CN101641920A (zh) 2010-02-03
KR20090115771A (ko) 2009-11-05
BRPI0808484A2 (pt) 2014-07-08

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