WO2002101953A3 - System and method for canceling interference in a communication system - Google Patents

System and method for canceling interference in a communication system Download PDF

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Publication number
WO2002101953A3
WO2002101953A3 PCT/US2002/018521 US0218521W WO02101953A3 WO 2002101953 A3 WO2002101953 A3 WO 2002101953A3 US 0218521 W US0218521 W US 0218521W WO 02101953 A3 WO02101953 A3 WO 02101953A3
Authority
WO
WIPO (PCT)
Prior art keywords
spectral
modified
characterization
spectral characterization
signal
Prior art date
Application number
PCT/US2002/018521
Other languages
French (fr)
Other versions
WO2002101953A2 (en
Inventor
Thomas J Kolze
Bruce J Currivan
Jonathan S Min
Eric Ojard
James Chi Thi
Daniel Howard
Original Assignee
Broadcom 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
Priority claimed from US09/878,730 external-priority patent/US6798854B2/en
Application filed by Broadcom Corp filed Critical Broadcom Corp
Priority to EP02741988A priority Critical patent/EP1415403B1/en
Priority to AU2002315050A priority patent/AU2002315050A1/en
Priority to DE60214005T priority patent/DE60214005T2/en
Publication of WO2002101953A2 publication Critical patent/WO2002101953A2/en
Publication of WO2002101953A3 publication Critical patent/WO2002101953A3/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
    • 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
    • H04B1/06—Receivers
    • H04B1/10—Means associated with receiver for limiting or suppressing noise or interference
    • H04B1/1027—Means associated with receiver for limiting or suppressing noise or interference assessing signal quality or detecting noise/interference for the received signal
    • H04B1/1036—Means associated with receiver for limiting or suppressing noise or interference assessing signal quality or detecting noise/interference for the received signal with automatic suppression of narrow band noise or interference, e.g. by using tuneable notch filters
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L1/00—Arrangements for detecting or preventing errors in the information received
    • H04L1/0001—Systems modifying transmission characteristics according to link quality, e.g. power backoff
    • 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
    • H04B1/06—Receivers
    • H04B1/10—Means associated with receiver for limiting or suppressing noise or interference
    • H04B1/12—Neutralising, balancing, or compensation arrangements
    • H04B1/123—Neutralising, balancing, or compensation arrangements using adaptive balancing or compensation means

Abstract

A filter settings generation operation includes sampling a communication channel to produce a sampled signal. The sampled signal is spectrally characterized across a frequency band of interest to produce a spectral characterization of the sampled signal. This spectral characterization may not include a signal of interest. The spectral characterization is then modified to produce a modified spectral characterization. Filter settings are then generated based upon the modified spectral characterization. Finally, the communication channel is filtered using the filter settings when the signal of interest is present on the communication channel. In modifying the spectral characterization, pluralities of spectral characteristics of the spectral characterization are independently modified to produce the modified spectral characterization. Modifications to the spectral characterization may be performed in the frequency domain and/or the time domain. One particular spectral modification that is performed is raising of the noise floor of the spectral characterization to meet a budgeted signal-to-noise ratio. Other spectral modifications include modifying spectral components corresponding to an extended interfering signal. In modifying these spectral characterizations, spectral components corresponding to a plurality of expected interfering signals may be modified.
PCT/US2002/018521 2001-06-11 2002-06-10 System and method for canceling interference in a communication system WO2002101953A2 (en)

Priority Applications (3)

Application Number Priority Date Filing Date Title
EP02741988A EP1415403B1 (en) 2001-06-11 2002-06-10 System and method for canceling interference in a communication system
AU2002315050A AU2002315050A1 (en) 2001-06-11 2002-06-10 System and method for canceling interference in a communication system
DE60214005T DE60214005T2 (en) 2001-06-11 2002-06-10 SYSTEM AND METHOD FOR REMOVING INTERFERENCES IN A COMMUNICATION SYSTEM

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
US09/878,730 US6798854B2 (en) 2001-01-16 2001-06-11 System and method for canceling interference in a communication system
US09/878,730 2001-06-11
US09/897,177 US6826242B2 (en) 2001-01-16 2001-07-02 Method for whitening colored noise in a communication system
US09/897,177 2001-07-02

Publications (2)

Publication Number Publication Date
WO2002101953A2 WO2002101953A2 (en) 2002-12-19
WO2002101953A3 true WO2002101953A3 (en) 2004-03-04

Family

ID=27128504

Family Applications (2)

Application Number Title Priority Date Filing Date
PCT/US2002/018517 WO2002102006A2 (en) 2001-06-11 2002-06-10 Method for whitening colored noise
PCT/US2002/018521 WO2002101953A2 (en) 2001-06-11 2002-06-10 System and method for canceling interference in a communication system

Family Applications Before (1)

Application Number Title Priority Date Filing Date
PCT/US2002/018517 WO2002102006A2 (en) 2001-06-11 2002-06-10 Method for whitening colored noise

Country Status (5)

Country Link
US (2) US6826242B2 (en)
EP (2) EP1400080A2 (en)
AU (1) AU2002315050A1 (en)
DE (1) DE60214005T2 (en)
WO (2) WO2002102006A2 (en)

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Also Published As

Publication number Publication date
US20050031061A1 (en) 2005-02-10
DE60214005D1 (en) 2006-09-28
US7684528B2 (en) 2010-03-23
US20020126778A1 (en) 2002-09-12
DE60214005T2 (en) 2007-03-01
EP1415403B1 (en) 2006-08-16
WO2002102006A2 (en) 2002-12-19
EP1415403A2 (en) 2004-05-06
AU2002315050A1 (en) 2002-12-23
WO2002101953A2 (en) 2002-12-19
WO2002102006A3 (en) 2003-03-06
US6826242B2 (en) 2004-11-30
EP1400080A2 (en) 2004-03-24

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