WO2008042221A3 - Low power and low complexity adaptive self-linearization - Google Patents

Low power and low complexity adaptive self-linearization Download PDF

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Publication number
WO2008042221A3
WO2008042221A3 PCT/US2007/020850 US2007020850W WO2008042221A3 WO 2008042221 A3 WO2008042221 A3 WO 2008042221A3 US 2007020850 W US2007020850 W US 2007020850W WO 2008042221 A3 WO2008042221 A3 WO 2008042221A3
Authority
WO
WIPO (PCT)
Prior art keywords
linearization
low
signal
component
adaptive self
Prior art date
Application number
PCT/US2007/020850
Other languages
French (fr)
Other versions
WO2008042221A2 (en
Inventor
Roy G Batruni
Original Assignee
Optichron 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 US11/897,932 external-priority patent/US7869550B2/en
Priority claimed from US11/897,941 external-priority patent/US8041757B2/en
Application filed by Optichron Inc filed Critical Optichron Inc
Publication of WO2008042221A2 publication Critical patent/WO2008042221A2/en
Publication of WO2008042221A3 publication Critical patent/WO2008042221A3/en

Links

Classifications

    • 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
    • H04L25/03—Shaping networks in transmitter or receiver, e.g. adaptive shaping networks
    • H04L25/03006—Arrangements for removing intersymbol interference
    • H04L25/03012—Arrangements for removing intersymbol interference operating in the time domain
    • H04L25/03019—Arrangements for removing intersymbol interference operating in the time domain adaptive, i.e. capable of adjustment during data reception
    • H04L25/03038—Arrangements for removing intersymbol interference operating in the time domain adaptive, i.e. capable of adjustment during data reception with a non-recursive structure
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03H—IMPEDANCE NETWORKS, e.g. RESONANT CIRCUITS; RESONATORS
    • H03H21/00—Adaptive networks
    • H03H21/0012—Digital adaptive filters
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03M—CODING; DECODING; CODE CONVERSION IN GENERAL
    • H03M1/00—Analogue/digital conversion; Digital/analogue conversion
    • H03M1/10—Calibration or testing
    • H03M1/1009—Calibration
    • H03M1/1033—Calibration over the full range of the converter, e.g. for correcting differential non-linearity
    • H03M1/1038—Calibration over the full range of the converter, e.g. for correcting differential non-linearity by storing corrected or correction values in one or more digital look-up tables
    • H03M1/1042—Calibration over the full range of the converter, e.g. for correcting differential non-linearity by storing corrected or correction values in one or more digital look-up tables the look-up table containing corrected values for replacing the original digital values
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03H—IMPEDANCE NETWORKS, e.g. RESONANT CIRCUITS; RESONATORS
    • H03H21/00—Adaptive networks
    • H03H21/0012—Digital adaptive filters
    • H03H2021/0081—Details
    • H03H2021/0083—Shadow filter, i.e. one of two filters which are simultaneously adapted, wherein the results of adapting the shadow filter are used for adapting the other filter
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03H—IMPEDANCE NETWORKS, e.g. RESONANT CIRCUITS; RESONATORS
    • H03H21/00—Adaptive networks
    • H03H21/0012—Digital adaptive filters
    • H03H2021/0096—Digital adaptive filters with input-sampling frequency and output-delivery frequency which differ, e.g. extrapolation; anti-aliasing
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03H—IMPEDANCE NETWORKS, e.g. RESONANT CIRCUITS; RESONATORS
    • H03H21/00—Adaptive networks
    • H03H21/0012—Digital adaptive filters
    • H03H21/0016—Non linear filters
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03M—CODING; DECODING; CODE CONVERSION IN GENERAL
    • H03M1/00—Analogue/digital conversion; Digital/analogue conversion
    • H03M1/06—Continuously compensating for, or preventing, undesired influence of physical parameters
    • H03M1/0614—Continuously compensating for, or preventing, undesired influence of physical parameters of harmonic distortion
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03M—CODING; DECODING; CODE CONVERSION IN GENERAL
    • H03M1/00—Analogue/digital conversion; Digital/analogue conversion
    • H03M1/10—Calibration or testing
    • H03M1/1004—Calibration or testing without interrupting normal operation, e.g. by providing an additional component for temporarily replacing components to be tested or calibrated
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03M—CODING; DECODING; CODE CONVERSION IN GENERAL
    • H03M1/00—Analogue/digital conversion; Digital/analogue conversion
    • H03M1/12—Analogue/digital converters

Abstract

A method of signal processing comprises receiving an unknown input signal that includes a distorted component and an undistorted component, the unknown input signal having a sampling rate of R; and performing self-linearization based at least in part on the unknown signal to obtain an output signal that is substantially undistorted, including by generating a replica distortion signal that is substantially similar to the distorted component, the generation being based at least in part on a target component having a sampling rate of R/L, L being an integer greater than 1.
PCT/US2007/020850 2006-09-29 2007-09-26 Low power and low complexity adaptive self-linearization WO2008042221A2 (en)

Applications Claiming Priority (6)

Application Number Priority Date Filing Date Title
US84808906P 2006-09-29 2006-09-29
US60/848,089 2006-09-29
US11/897,932 US7869550B2 (en) 2006-09-29 2007-08-31 Nonlinear digital signal processor
US11/897,932 2007-08-31
US11/897,941 2007-08-31
US11/897,941 US8041757B2 (en) 2006-09-29 2007-08-31 Low power and low complexity adaptive self-linearization

Publications (2)

Publication Number Publication Date
WO2008042221A2 WO2008042221A2 (en) 2008-04-10
WO2008042221A3 true WO2008042221A3 (en) 2008-08-28

Family

ID=39268975

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/US2007/020850 WO2008042221A2 (en) 2006-09-29 2007-09-26 Low power and low complexity adaptive self-linearization

Country Status (1)

Country Link
WO (1) WO2008042221A2 (en)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2541379A (en) * 2015-08-14 2017-02-22 Csir Method and system for improving spurious free dynamic range of signal processing systems
FR3091431B1 (en) 2018-12-27 2022-01-28 Thales Sa Method for correcting faults introduced by a digitization system on an IQ signal and associated devices

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6765931B1 (en) * 1999-04-13 2004-07-20 Broadcom Corporation Gateway with voice
US6856191B2 (en) * 2003-02-21 2005-02-15 Optichron, Inc. Nonlinear filter
US20050212589A1 (en) * 2004-03-25 2005-09-29 Optichron, Inc. Low-complexity nonlinear filters
US20050212596A1 (en) * 2004-03-25 2005-09-29 Optichron, Inc. Model based distortion reduction for power amplifiers
US6999510B2 (en) * 2003-04-18 2006-02-14 Optichron, Inc. Nonlinear inversion

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6765931B1 (en) * 1999-04-13 2004-07-20 Broadcom Corporation Gateway with voice
US6856191B2 (en) * 2003-02-21 2005-02-15 Optichron, Inc. Nonlinear filter
US6999510B2 (en) * 2003-04-18 2006-02-14 Optichron, Inc. Nonlinear inversion
US20050212589A1 (en) * 2004-03-25 2005-09-29 Optichron, Inc. Low-complexity nonlinear filters
US20050212596A1 (en) * 2004-03-25 2005-09-29 Optichron, Inc. Model based distortion reduction for power amplifiers

Also Published As

Publication number Publication date
WO2008042221A2 (en) 2008-04-10

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