WO2004059899A3 - Adaptive coefficient signal generator for adaptive signal equalizers with fractionally-spaced feedback - Google Patents

Adaptive coefficient signal generator for adaptive signal equalizers with fractionally-spaced feedback Download PDF

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Publication number
WO2004059899A3
WO2004059899A3 PCT/US2003/035352 US0335352W WO2004059899A3 WO 2004059899 A3 WO2004059899 A3 WO 2004059899A3 US 0335352 W US0335352 W US 0335352W WO 2004059899 A3 WO2004059899 A3 WO 2004059899A3
Authority
WO
WIPO (PCT)
Prior art keywords
adaptive
fractionally
signal generator
spaced feedback
equalizers
Prior art date
Application number
PCT/US2003/035352
Other languages
French (fr)
Other versions
WO2004059899A2 (en
WO2004059899A9 (en
Inventor
Abhijit G Shanbhag
Qian Yu
Abhijit M Phanse
Jishnu Bhatacharjee
Debanjan Mukherjee
Venugopal Balasubramonian
Fabian Giroud
Original Assignee
Scintera Networks 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 US10/290,571 external-priority patent/US6940898B2/en
Application filed by Scintera Networks Inc filed Critical Scintera Networks Inc
Priority to AU2003291256A priority Critical patent/AU2003291256A1/en
Publication of WO2004059899A2 publication Critical patent/WO2004059899A2/en
Publication of WO2004059899A3 publication Critical patent/WO2004059899A3/en
Publication of WO2004059899A9 publication Critical patent/WO2004059899A9/en

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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
    • H04L25/03057—Arrangements for removing intersymbol interference operating in the time domain adaptive, i.e. capable of adjustment during data reception with a recursive structure
    • H04L25/03063—Arrangements for removing intersymbol interference operating in the time domain adaptive, i.e. capable of adjustment during data reception with a recursive structure using fractionally spaced delay lines or combinations of fractionally and integrally spaced taps
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03H—IMPEDANCE NETWORKS, e.g. RESONANT CIRCUITS; RESONATORS
    • H03H21/00—Adaptive networks
    • H03H21/0012—Digital adaptive filters
    • 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
    • H04L25/03057—Arrangements for removing intersymbol interference operating in the time domain adaptive, i.e. capable of adjustment during data reception with a recursive structure
    • H04L25/0307—Arrangements for removing intersymbol interference operating in the time domain adaptive, i.e. capable of adjustment during data reception with a recursive structure using blind adaptation
    • 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
    • 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
    • H04L2025/03433—Arrangements for removing intersymbol interference characterised by equaliser structure
    • H04L2025/03439—Fixed structures
    • H04L2025/03445—Time domain
    • H04L2025/03471—Tapped delay lines
    • H04L2025/03484—Tapped delay lines time-recursive
    • H04L2025/0349—Tapped delay lines time-recursive as a feedback filter
    • 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
    • H04L2025/03433—Arrangements for removing intersymbol interference characterised by equaliser structure
    • H04L2025/03439—Fixed structures
    • H04L2025/03445—Time domain
    • H04L2025/03471—Tapped delay lines
    • H04L2025/03509—Tapped delay lines fractionally spaced
    • 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
    • H04L2025/03592—Adaptation methods
    • H04L2025/03598—Algorithms
    • H04L2025/03611—Iterative algorithms

Abstract

An adaptive coefficient signal generator for use in an adaptive signal equalizer with fractionally-spaced feedback. The signals representing the feedback tap coefficients are generated in conjunction with a timing interpolation parameter such that the fractionally-spaced feedback circuitry dynamically emulates symbol-spaced feedback circuitry.
PCT/US2003/035352 2002-11-08 2003-11-06 Adaptive coefficient signal generator for adaptive signal equalizers with fractionally-spaced feedback WO2004059899A2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AU2003291256A AU2003291256A1 (en) 2002-11-08 2003-11-06 Adaptive coefficient signal generator for adaptive signal equalizers with fractionally-spaced feedback

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
US10/290,571 US6940898B2 (en) 2002-11-08 2002-11-08 Adaptive coefficient signal generator for adaptive signal equalizers with fractionally-spaced feedback
US10/290,571 2002-11-08
US10/322,024 US7039104B2 (en) 2002-11-08 2002-12-17 Adaptive coefficient signal generator for adaptive signal equalizers with fractionally-spaced feedback
US10/322,024 2002-12-17

Publications (3)

Publication Number Publication Date
WO2004059899A2 WO2004059899A2 (en) 2004-07-15
WO2004059899A3 true WO2004059899A3 (en) 2005-12-08
WO2004059899A9 WO2004059899A9 (en) 2006-02-23

Family

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Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/US2003/035352 WO2004059899A2 (en) 2002-11-08 2003-11-06 Adaptive coefficient signal generator for adaptive signal equalizers with fractionally-spaced feedback

Country Status (3)

Country Link
US (2) US7039104B2 (en)
AU (1) AU2003291256A1 (en)
WO (1) WO2004059899A2 (en)

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US20040136914A1 (en) * 1997-10-01 2004-07-15 Dugger Harry A. Buccal, polar and non-polar spray containing ondansetron
US7274762B2 (en) * 2002-03-22 2007-09-25 Infineon Technologies Ag Calculation circuit for calculating a sampling phase error
US7362799B1 (en) * 2002-06-27 2008-04-22 Arraycomm Llc Method and apparatus for communication signal resolution
US7266145B2 (en) * 2002-11-08 2007-09-04 Scintera Networks, Inc. Adaptive signal equalizer with adaptive error timing and precursor/postcursor configuration control
US7035330B2 (en) * 2002-12-17 2006-04-25 Scintera Networks, Inc. Decision feedback equalizer with dynamic feedback control
US7120193B2 (en) * 2002-11-08 2006-10-10 Scintera Networks, Inc. Decision feedback equalizer with dynamic feedback control
US7039104B2 (en) 2002-11-08 2006-05-02 Scintera Networks, Inc. Adaptive coefficient signal generator for adaptive signal equalizers with fractionally-spaced feedback
US7408981B2 (en) * 2003-05-20 2008-08-05 Rambus Inc. Methods and circuits for performing margining tests in the presence of a decision feedback equalizer
US7590175B2 (en) * 2003-05-20 2009-09-15 Rambus Inc. DFE margin test methods and circuits that decouple sample and feedback timing
US7627029B2 (en) 2003-05-20 2009-12-01 Rambus Inc. Margin test methods and circuits
US7339988B1 (en) * 2003-07-03 2008-03-04 Scintera Networks, Inc. Channel monitoring and identification and performance monitoring in a flexible high speed signal processor engine
US7346638B2 (en) * 2003-11-21 2008-03-18 Board Of Regents, The University Of Texas System Filtering, equalization, and power estimation for enabling higher speed signal transmission
US7301998B2 (en) * 2003-12-19 2007-11-27 Intel Corporation Filter with signal taps temporally spaced at fractional symbol intervals
US7940839B2 (en) * 2004-01-26 2011-05-10 Diablo Technologies Inc. Fully adaptive equalization for high loss communications channels
US8036260B2 (en) * 2007-08-30 2011-10-11 Freescale Semiconductor, Inc. System and method for equalizing an incoming signal
TWI372517B (en) * 2008-10-13 2012-09-11 Realtek Semiconductor Corp Equalizer and method for configuring the equalizer
US8553814B2 (en) * 2009-07-31 2013-10-08 Lsi Corporation Rapid sampling phase recovery
US20150349988A1 (en) * 2014-05-30 2015-12-03 Lsi Corporation Selecting floating tap positions in a floating tap equalizer
CN111919424A (en) * 2018-07-02 2020-11-10 拉姆伯斯公司 Method and circuit for decision feedback equalization using early high order symbol detection
RU194496U1 (en) * 2019-06-25 2019-12-12 Федеральное государственное бюджетное образовательное учреждение высшего образования "МИРЭА - Российский технологический университет" ADAPTIVE DIGITAL FILTER FOR THE SUPPRESSION OF NON-FLUCTUATION INTERFERENCE
US11171815B2 (en) * 2020-01-21 2021-11-09 Credo Technology Group Limited Digital equalizer with overlappable filter taps
US11153129B1 (en) * 2020-06-01 2021-10-19 International Business Machines Corporation Feedforward equalizer with programmable roaming taps
RU2747199C1 (en) * 2020-07-05 2021-04-29 Федеральное государственное бюджетное образовательное учреждение высшего образования. "Юго-Западный государственный университет" (ЮЗГУ) Digital filter for non-stationary signals

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US6240133B1 (en) * 1998-02-05 2001-05-29 Texas Instruments Incorporated High stability fast tracking adaptive equalizer for use with time varying communication channels
US20010007479A1 (en) * 2000-01-07 2001-07-12 Kim Joon Tae Partial fractionally spaced channel equalizer for digital television
US20010026197A1 (en) * 2000-03-27 2001-10-04 Ntt Docomo, Inc. Spatial and temporal equalizer and equalization method

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US6240133B1 (en) * 1998-02-05 2001-05-29 Texas Instruments Incorporated High stability fast tracking adaptive equalizer for use with time varying communication channels
US20010007479A1 (en) * 2000-01-07 2001-07-12 Kim Joon Tae Partial fractionally spaced channel equalizer for digital television
US20010026197A1 (en) * 2000-03-27 2001-10-04 Ntt Docomo, Inc. Spatial and temporal equalizer and equalization method

Also Published As

Publication number Publication date
US7203233B2 (en) 2007-04-10
US7039104B2 (en) 2006-05-02
WO2004059899A2 (en) 2004-07-15
US20060104342A1 (en) 2006-05-18
US20040091041A1 (en) 2004-05-13
AU2003291256A1 (en) 2004-07-22
AU2003291256A8 (en) 2004-07-22

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