WO2005002112A3 - Digital baseband system and process for compensating for analog radio transmitter impairments - Google Patents

Digital baseband system and process for compensating for analog radio transmitter impairments Download PDF

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Publication number
WO2005002112A3
WO2005002112A3 PCT/US2004/014615 US2004014615W WO2005002112A3 WO 2005002112 A3 WO2005002112 A3 WO 2005002112A3 US 2004014615 W US2004014615 W US 2004014615W WO 2005002112 A3 WO2005002112 A3 WO 2005002112A3
Authority
WO
WIPO (PCT)
Prior art keywords
analog radio
compensating
analog
radio transmitter
digital baseband
Prior art date
Application number
PCT/US2004/014615
Other languages
French (fr)
Other versions
WO2005002112A2 (en
Inventor
Alpaslan Demir
Leonid Kazakevich
Kenneth P Kearney
Original Assignee
Interdigital Tech Corp
Alpaslan Demir
Leonid Kazakevich
Kenneth P Kearney
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 Interdigital Tech Corp, Alpaslan Demir, Leonid Kazakevich, Kenneth P Kearney filed Critical Interdigital Tech Corp
Priority to EP04751813A priority Critical patent/EP1632033A4/en
Publication of WO2005002112A2 publication Critical patent/WO2005002112A2/en
Publication of WO2005002112A3 publication Critical patent/WO2005002112A3/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
    • 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
    • H03F1/3294—Acting on the real and imaginary components of the input signal
    • 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
    • H03F1/34—Negative-feedback-circuit arrangements with or without positive feedback
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03F—AMPLIFIERS
    • H03F3/00—Amplifiers with only discharge tubes or only semiconductor devices as amplifying elements
    • H03F3/20—Power amplifiers, e.g. Class B amplifiers, Class C amplifiers
    • H03F3/24—Power amplifiers, e.g. Class B amplifiers, Class C amplifiers of transmitter output stages
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03F—AMPLIFIERS
    • H03F2200/00—Indexing scheme relating to amplifiers
    • H03F2200/462—Indexing scheme relating to amplifiers the current being sensed
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03F—AMPLIFIERS
    • H03F2200/00—Indexing scheme relating to amplifiers
    • H03F2200/465—Power sensing
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03F—AMPLIFIERS
    • H03F2200/00—Indexing scheme relating to amplifiers
    • H03F2200/468—Indexing scheme relating to amplifiers the temperature being sensed
    • 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
    • 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
    • H04B2001/0433—Circuits with power amplifiers with linearisation using feedback

Abstract

In order to compensate for performance degradation caused by inferior low-cost analog radio component tolerances of an analog radio, a wireless communication transmitter employs a control process to implement numerous digital signal processing (DSP) techniques to compensate for deficiencies of such analog components so that modern specifications may be relaxed. By monitoring a plurality of parameters associated with the analog radio, such as temperature, bias current or the like, enhanced phase and amplitude compensation, as well as many other radio frequency (RF) parameters may be implemented.
PCT/US2004/014615 2003-06-06 2004-05-10 Digital baseband system and process for compensating for analog radio transmitter impairments WO2005002112A2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
EP04751813A EP1632033A4 (en) 2003-06-06 2004-05-10 Digital baseband system and process for compensating for analog radio transmitter impairments

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
US47631403P 2003-06-06 2003-06-06
US60/476,314 2003-06-06
US10/736,294 US7133644B2 (en) 2003-06-06 2003-12-15 Digital baseband system and process for compensating for analog radio transmitter impairments
US10/736,294 2003-12-15

Publications (2)

Publication Number Publication Date
WO2005002112A2 WO2005002112A2 (en) 2005-01-06
WO2005002112A3 true WO2005002112A3 (en) 2005-12-01

Family

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Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/US2004/014615 WO2005002112A2 (en) 2003-06-06 2004-05-10 Digital baseband system and process for compensating for analog radio transmitter impairments

Country Status (5)

Country Link
US (2) US7133644B2 (en)
EP (1) EP1632033A4 (en)
AR (1) AR044592A1 (en)
TW (3) TWI352513B (en)
WO (1) WO2005002112A2 (en)

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US9559879B2 (en) 2011-04-21 2017-01-31 Mediatek Singapore Pte. Ltd. PA cell, PA module, wireless communication unit, RF transmitter architecture and method therefor
US9088319B2 (en) 2011-04-21 2015-07-21 Mediatek Singapore Pte. Ltd. RF transmitter architecture, integrated circuit device, wireless communication unit and method therefor
US10129055B2 (en) 2011-04-21 2018-11-13 Mediatek Singapore Pte. Ltd. PA cell, PA module, wireless communication unit, RF transmitter architecture and method therefor
US8519789B2 (en) * 2011-08-03 2013-08-27 Scintera Networks, Inc. Pre-distortion for fast power transient waveforms
KR102207599B1 (en) * 2011-10-27 2021-01-26 인텔 코포레이션 Block-based crest factor reduction (cfr)
RU2012102842A (en) 2012-01-27 2013-08-10 ЭлЭсАй Корпорейшн INCREASE DETECTION OF THE PREAMBLE
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See also references of EP1632033A4 *

Also Published As

Publication number Publication date
WO2005002112A2 (en) 2005-01-06
EP1632033A4 (en) 2008-02-06
TWI352513B (en) 2011-11-11
TW200529577A (en) 2005-09-01
US20070049219A1 (en) 2007-03-01
US7702288B2 (en) 2010-04-20
AR044592A1 (en) 2005-09-21
TWI258927B (en) 2006-07-21
TWI336173B (en) 2011-01-11
US20040248516A1 (en) 2004-12-09
TW200501598A (en) 2005-01-01
US7133644B2 (en) 2006-11-07
TW200814548A (en) 2008-03-16
EP1632033A2 (en) 2006-03-08

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