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FI20075690A0 - Signaalin esivääristäminen radiolähettimessä - Google Patents

Signaalin esivääristäminen radiolähettimessä

Info

Publication number
FI20075690A0
FI20075690A0 FI20075690A FI20075690A FI20075690A0 FI 20075690 A0 FI20075690 A0 FI 20075690A0 FI 20075690 A FI20075690 A FI 20075690A FI 20075690 A FI20075690 A FI 20075690A FI 20075690 A0 FI20075690 A0 FI 20075690A0
Authority
FI
Finland
Prior art keywords
distortion
signal pre
radio transmitters
transmitters
radio
Prior art date
Application number
FI20075690A
Other languages
English (en)
Swedish (sv)
Inventor
Markus Nentwig
Original Assignee
Nokia Corp
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 Nokia Corp filed Critical Nokia Corp
Priority to FI20075690A priority Critical patent/FI20075690A0/fi
Publication of FI20075690A0 publication Critical patent/FI20075690A0/fi
Priority to US11/984,398 priority patent/US20090088093A1/en
Priority to PCT/FI2008/050542 priority patent/WO2009043970A1/en

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B1/00—Details of transmission systems, not covered by a single one of groups H04B3/00 - H04B13/00; Details of transmission systems not characterised by the medium used for transmission
    • H04B1/02—Transmitters
    • H04B1/04—Circuits
    • H04B1/0475—Circuits with means for limiting noise, interference or distortion
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03F—AMPLIFIERS
    • H03F1/00—Details of amplifiers with only discharge tubes, only semiconductor devices or only unspecified devices as amplifying elements
    • H03F1/32—Modifications of amplifiers to reduce non-linear distortion
    • H03F1/3241—Modifications of amplifiers to reduce non-linear distortion using predistortion circuits
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B1/00—Details of transmission systems, not covered by a single one of groups H04B3/00 - H04B13/00; Details of transmission systems not characterised by the medium used for transmission
    • H04B1/02—Transmitters
    • H04B1/04—Circuits
    • H04B2001/0408—Circuits with power amplifiers
    • H04B2001/0425—Circuits with power amplifiers with linearisation using predistortion

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Physics & Mathematics (AREA)
  • Nonlinear Science (AREA)
  • Power Engineering (AREA)
  • Amplifiers (AREA)
FI20075690A 2007-10-01 2007-10-01 Signaalin esivääristäminen radiolähettimessä FI20075690A0 (fi)

Priority Applications (3)

Application Number Priority Date Filing Date Title
FI20075690A FI20075690A0 (fi) 2007-10-01 2007-10-01 Signaalin esivääristäminen radiolähettimessä
US11/984,398 US20090088093A1 (en) 2007-10-01 2007-11-16 Signal predistortion in radio transmitter
PCT/FI2008/050542 WO2009043970A1 (en) 2007-10-01 2008-09-29 Signal predistortion in radio transmitter

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FI20075690A FI20075690A0 (fi) 2007-10-01 2007-10-01 Signaalin esivääristäminen radiolähettimessä

Publications (1)

Publication Number Publication Date
FI20075690A0 true FI20075690A0 (fi) 2007-10-01

Family

ID=38656837

Family Applications (1)

Application Number Title Priority Date Filing Date
FI20075690A FI20075690A0 (fi) 2007-10-01 2007-10-01 Signaalin esivääristäminen radiolähettimessä

Country Status (3)

Country Link
US (1) US20090088093A1 (fi)
FI (1) FI20075690A0 (fi)
WO (1) WO2009043970A1 (fi)

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US9026067B2 (en) * 2007-04-23 2015-05-05 Dali Systems Co. Ltd. Remotely reconfigurable power amplifier system and method
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US9026062B2 (en) 2009-10-10 2015-05-05 Blackberry Limited Method and apparatus for managing operations of a communication device
US8324953B1 (en) * 2009-10-21 2012-12-04 Vyycore Ltd. Method and a system for signal processing
US8803631B2 (en) 2010-03-22 2014-08-12 Blackberry Limited Method and apparatus for adapting a variable impedance network
CN102948083B (zh) 2010-04-20 2015-05-27 黑莓有限公司 通信设备中管理干扰的方法和装置
US8867561B2 (en) 2010-05-10 2014-10-21 Comcast Cable Communications, Llc Managing upstream transmission in a network
US8682338B2 (en) 2010-09-14 2014-03-25 Dali Systems Co., Ltd. Remotely reconfigurable distributed antenna system and methods
US8655293B2 (en) 2010-09-15 2014-02-18 Intel Mobile Communications GmbH PA bias optimization for modulation schemes with variable bandwidth
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US8712340B2 (en) 2011-02-18 2014-04-29 Blackberry Limited Method and apparatus for radio antenna frequency tuning
US8594584B2 (en) 2011-05-16 2013-11-26 Blackberry Limited Method and apparatus for tuning a communication device
WO2013004273A1 (en) * 2011-07-01 2013-01-10 Telefonaktiebolaget L M Ericsson (Publ) Enhanced linearizing for a transmitter comprising a power amplifier
EP2740221B1 (en) 2011-08-05 2019-06-26 BlackBerry Limited Method and apparatus for band tuning in a communication device
US8880012B2 (en) 2012-01-19 2014-11-04 Motorola Mobility Llc Method and apparatus for resource block based transmitter optimization in wireless communication devices
CN102893399B (zh) 2012-05-24 2015-09-09 华为技术有限公司 预失真校正方法、预失真校正装置、发射机及基站
US9853363B2 (en) 2012-07-06 2017-12-26 Blackberry Limited Methods and apparatus to control mutual coupling between antennas
US9350405B2 (en) 2012-07-19 2016-05-24 Blackberry Limited Method and apparatus for antenna tuning and power consumption management in a communication device
US8874052B2 (en) * 2012-11-15 2014-10-28 Motorola Mobility Llc Method and apparatus for improving efficiency and distortion leakage in a wireless power amplifier
US9374113B2 (en) * 2012-12-21 2016-06-21 Blackberry Limited Method and apparatus for adjusting the timing of radio antenna tuning
US9813086B2 (en) * 2012-12-21 2017-11-07 Mediatek Singapore Pte. Ltd RF transmitter, integrated circuit device, wireless communication unit and method therefor
US10404295B2 (en) 2012-12-21 2019-09-03 Blackberry Limited Method and apparatus for adjusting the timing of radio antenna tuning
US9680434B2 (en) * 2012-12-28 2017-06-13 Mediatek, Inc. Method and apparatus for calibrating an envelope tracking system
JP6253298B2 (ja) * 2013-07-31 2017-12-27 パナソニック株式会社 送信装置
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US9054940B2 (en) * 2013-10-25 2015-06-09 Mitsubishi Electric Research Laboratories, Inc. System and method for linearizing power amplifiers
US9379744B2 (en) 2014-09-16 2016-06-28 Honeywell International Inc. System and method for digital predistortion
US9438319B2 (en) 2014-12-16 2016-09-06 Blackberry Limited Method and apparatus for antenna selection
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US9998241B2 (en) * 2015-02-19 2018-06-12 Mediatek Inc. Envelope tracking (ET) closed-loop on-the-fly calibration
DE102015110238A1 (de) * 2015-06-25 2016-12-29 Intel IP Corporation Eine Schaltung und ein Verfahren zum Erzeugen eines Radiofrequenzsignals
CN109075745B (zh) * 2015-11-10 2020-07-14 华为技术有限公司 预失真装置
EP3252949B1 (en) * 2016-06-01 2020-03-18 Intel IP Corporation Methods and devices for predistortion of signals
US9973370B1 (en) * 2017-06-06 2018-05-15 Intel IP Corporation Memory predistortion in bandwidth limited envelope tracking
US11997540B2 (en) * 2021-04-30 2024-05-28 Qualcomm Incorporated Techniques for displaying a radio access technology status indication based on bandwidth metrics

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DE59810878D1 (de) * 1997-07-08 2004-04-08 Siemens Ag Sendeeinrichtung
US6144255A (en) * 1998-10-19 2000-11-07 Powerwave Technologies, Inc. Feedforward amplification system having mask detection compensation
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JP3805221B2 (ja) * 2001-09-18 2006-08-02 株式会社日立国際電気 歪み補償装置
US7035601B2 (en) * 2003-02-27 2006-04-25 Nokia Corporation Data transmission method, base station and transmitter for compensating for non-linearities in a transmission chain
US7409193B2 (en) * 2003-07-03 2008-08-05 Zarbana Digital Fund Llc Predistortion circuit for a transmit system
US7023273B2 (en) * 2003-10-06 2006-04-04 Andrew Corporation Architecture and implementation methods of digital predistortion circuitry
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US7577211B2 (en) * 2004-03-01 2009-08-18 Powerwave Technologies, Inc. Digital predistortion system and method for linearizing an RF power amplifier with nonlinear gain characteristics and memory effects
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WO2006031156A1 (en) * 2004-09-15 2006-03-23 Telefonaktiebolaget L M Ericsson An arrangement and a method relating to signal predistortion
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US20080130785A1 (en) * 2006-12-04 2008-06-05 Raytheon Company Frequency and temperature dependent pre-distortion
FI20065783A0 (sv) * 2006-12-08 2006-12-08 Nokia Corp Signalfördistorsion i radiosändare

Also Published As

Publication number Publication date
US20090088093A1 (en) 2009-04-02
WO2009043970A1 (en) 2009-04-09

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Legal Events

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