CA2270994A1 - Method of operating the channel equalizer in a receiver for dtv signals subject to co-channel ntsc interference - Google Patents

Method of operating the channel equalizer in a receiver for dtv signals subject to co-channel ntsc interference

Info

Publication number
CA2270994A1
CA2270994A1 CA002270994A CA2270994A CA2270994A1 CA 2270994 A1 CA2270994 A1 CA 2270994A1 CA 002270994 A CA002270994 A CA 002270994A CA 2270994 A CA2270994 A CA 2270994A CA 2270994 A1 CA2270994 A1 CA 2270994A1
Authority
CA
Canada
Prior art keywords
channel
interference
filter
intersymbol
receiver
Prior art date
Legal status (The legal status 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 status listed.)
Granted
Application number
CA002270994A
Other languages
French (fr)
Other versions
CA2270994C (en
Inventor
Allen Leroy Limberg
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Samsung Electronics Co Ltd
Original Assignee
Individual
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 Individual filed Critical Individual
Publication of CA2270994A1 publication Critical patent/CA2270994A1/en
Application granted granted Critical
Publication of CA2270994C publication Critical patent/CA2270994C/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

Links

Classifications

    • 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
    • H04L1/004—Arrangements for detecting or preventing errors in the information received by using forward error control
    • H04L1/0056—Systems characterized by the type of code used
    • H04L1/0064—Concatenated codes
    • H04L1/0065—Serial concatenated codes
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N7/00—Television systems
    • H04N7/015—High-definition television systems
    • 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
    • H04L25/03114—Arrangements for removing intersymbol interference operating in the time domain non-adaptive, i.e. not adjustable, manually adjustable, or adjustable only during the reception of special signals
    • H04L25/03133—Arrangements for removing intersymbol interference operating in the time domain non-adaptive, i.e. not adjustable, manually adjustable, or adjustable only during the reception of special signals with a non-recursive structure
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L27/00—Modulated-carrier systems
    • H04L27/02—Amplitude-modulated carrier systems, e.g. using on-off keying; Single sideband or vestigial sideband modulation
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N5/00—Details of television systems
    • H04N5/14—Picture signal circuitry for video frequency region
    • H04N5/21—Circuitry for suppressing or minimising disturbance, e.g. moiré or halo
    • H04N5/211—Ghost signal cancellation
    • 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
    • H04L2025/0335—Arrangements for removing intersymbol interference characterised by the type of transmission
    • H04L2025/03375—Passband transmission
    • H04L2025/03382—Single of vestigal sideband
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N21/00—Selective content distribution, e.g. interactive television or video on demand [VOD]
    • H04N21/40—Client devices specifically adapted for the reception of or interaction with content, e.g. set-top-box [STB]; Operations thereof
    • H04N21/41—Structure of client; Structure of client peripherals
    • H04N21/426—Internal components of the client ; Characteristics thereof

Landscapes

  • Engineering & Computer Science (AREA)
  • Signal Processing (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Multimedia (AREA)
  • Power Engineering (AREA)
  • Digital Transmission Methods That Use Modulated Carrier Waves (AREA)
  • Noise Elimination (AREA)
  • Picture Signal Circuits (AREA)
  • Cable Transmission Systems, Equalization Of Radio And Reduction Of Echo (AREA)

Abstract

A DTV signal receiver includes an adaptive channel equalization filter, a comb filter (20) for suppressing artifacts of co-channel NTSC interference, and an intersymbol-interference suppression filter (26) compensating for the intersymbol interference introduced by the comb filter (20). The adaptation of the equalization filter coefficients is done so as to be insensitive to the presence or absence of the artifacts of co-channel NTSC interference. This avoids the channel equalization filter attempting to compensate for the intersymbol interference introduced by the comb filter (20), which compensation could not be fully accomplished and would make the intersymbol interference in the comb filter (20) unpredictable. The adaptation of the equalization filter coefficients is done so as not to affect the intersymbol interference introduced by the comb filter (20). Consequently, the intersymbol interference can be properly compensated for by the intersymbol-interference suppression filter (26).
CA002270994A 1997-09-19 1998-09-18 Method of operating the channel equalizer in a receiver for dtv signals subject to co-channel ntsc interference Expired - Fee Related CA2270994C (en)

Applications Claiming Priority (5)

Application Number Priority Date Filing Date Title
US93393497A 1997-09-19 1997-09-19
US08/933,934 1997-09-19
US93774097A 1997-09-25 1997-09-25
US08/937,740 1997-09-25
PCT/KR1998/000286 WO1999016240A1 (en) 1997-09-19 1998-09-18 Method of operating the channel equalizer in a receiver for dtv signals subject to co-channel ntsc interference

Publications (2)

Publication Number Publication Date
CA2270994A1 true CA2270994A1 (en) 1999-04-01
CA2270994C CA2270994C (en) 2002-06-04

Family

ID=27130052

Family Applications (2)

Application Number Title Priority Date Filing Date
CA002247555A Expired - Fee Related CA2247555C (en) 1997-09-19 1998-09-16 Ntsc interference detectors using comb filters that suppress dtv pilot carrier to extract ntsc artifacts
CA002270994A Expired - Fee Related CA2270994C (en) 1997-09-19 1998-09-18 Method of operating the channel equalizer in a receiver for dtv signals subject to co-channel ntsc interference

Family Applications Before (1)

Application Number Title Priority Date Filing Date
CA002247555A Expired - Fee Related CA2247555C (en) 1997-09-19 1998-09-16 Ntsc interference detectors using comb filters that suppress dtv pilot carrier to extract ntsc artifacts

Country Status (8)

Country Link
JP (2) JP2000506716A (en)
KR (2) KR100557122B1 (en)
CN (2) CN1128550C (en)
AU (1) AU703907B1 (en)
BR (1) BR9803498A (en)
CA (2) CA2247555C (en)
SG (1) SG68079A1 (en)
WO (1) WO1999016240A1 (en)

Families Citing this family (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1089427B1 (en) * 1999-09-28 2007-07-18 Koninklijke Philips Electronics N.V. Method for the comparison of the amplitudes of two electrical signals
US6449002B1 (en) * 1999-12-21 2002-09-10 Thomson Licensing S.A. Truncated metric for NTSC interference rejection in the ATSC-HDTV trellis decoder
KR100705931B1 (en) * 2000-12-08 2007-04-11 엘지전자 주식회사 Complex adaptive channel equalizer for digital VSB receiver
CN100373372C (en) * 2002-09-17 2008-03-05 联发科技股份有限公司 Error correcting system and method for automatic power control circuit
JP2006507759A (en) * 2002-11-26 2006-03-02 トムソン ライセンシング NTSC signal detector
KR100594275B1 (en) * 2004-05-14 2006-06-30 삼성전자주식회사 Digital television receiver having a channel state generation circuit for NTSC co-channel interference rejection and broadcasting signal processing method of the same
KR100608000B1 (en) 2004-08-16 2006-08-02 삼성전자주식회사 Thermal image forming apparatus comprising cooling fan
US7613238B2 (en) * 2005-09-13 2009-11-03 Mediatek Inc. Apparatus and method for decision error compensation in an adaptive equalizer
US7668209B2 (en) 2005-10-05 2010-02-23 Lg Electronics Inc. Method of processing traffic information and digital broadcast system
CN101944964B (en) * 2005-10-17 2012-10-31 Lg电子株式会社 Method for processing traffic information and digital broadcast system
US8238450B2 (en) 2009-01-30 2012-08-07 Futurewei Technologies Inc. Dynamic transmitter noise level adjustment for digital subscriber line systems
CN109716664B (en) * 2016-10-10 2020-06-16 华为技术有限公司 Comb filtering noise elimination method and device and frequency domain self-adaptive equalization device
JP7513869B2 (en) 2020-03-23 2024-07-10 澁谷工業株式会社 Exosome extraction device and exosome extraction method

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5602602A (en) * 1994-02-10 1997-02-11 Philips Electronics North America Corporation Method and apparatus for combating co-channel NTSC interference for digital TV transmission having a simplified rejection filter
US5546132A (en) * 1994-12-07 1996-08-13 Goldstar Co., Ltd. NTSC interference detector
US5648822A (en) * 1995-05-19 1997-07-15 Philips Electronics North America Corporation Method and apparatus for combating co-channel NTSC interference using a variable-comb filter for digital TV transmission
US5594496A (en) * 1995-06-07 1997-01-14 Zenith Electronics Corporation Detection of co-channel interference in digital television signals

Also Published As

Publication number Publication date
JPH11164222A (en) 1999-06-18
KR19990029972A (en) 1999-04-26
KR20000069033A (en) 2000-11-25
JP2000506716A (en) 2000-05-30
CA2247555A1 (en) 1999-03-19
CN1239625A (en) 1999-12-22
CN1128550C (en) 2003-11-19
CN1212581A (en) 1999-03-31
JP3272678B2 (en) 2002-04-08
CA2270994C (en) 2002-06-04
CA2247555C (en) 2001-12-11
CN1122401C (en) 2003-09-24
SG68079A1 (en) 1999-10-19
WO1999016240A1 (en) 1999-04-01
BR9803498A (en) 1999-11-03
KR100278854B1 (en) 2001-01-15
AU703907B1 (en) 1999-04-01
KR100557122B1 (en) 2006-03-03

Similar Documents

Publication Publication Date Title
CA2270994A1 (en) Method of operating the channel equalizer in a receiver for dtv signals subject to co-channel ntsc interference
WO1998027719A3 (en) A digital receiver
CA2221317A1 (en) Detection of co-channel interference in digital television signals
CA2112020A1 (en) Adaptive Equalizer
WO2001084724A3 (en) Methods and systems for adaptive receiver equalization
WO1997023962A3 (en) Method and apparatus for intersymbol interference reduction using array processing of diversity signals
EP0963068A3 (en) Receiver for receiving digital broadcast programmes using the weighted sum of channel impulse response data to adjust the sampling window
WO1996021304A2 (en) Combating signal interference in digital transmission
EP0601855A3 (en) Adaptive equalizer capable of compensating for carrier frequency offset.
SG42775A1 (en) Process for fast blind equalization of an adaptive equalizer
AU2022800A (en) Multi-pair gigabit ethernet transceiver
EP0729254A3 (en) Fractionally spaced equalizing circuits and method
CA2047164A1 (en) Adaptive equalizer with channel impulse response estimation
MY144641A (en) Beam-former and combiner for a multiple-antenna system
CN100463505C (en) Method for removing co-channel interference and related filtering system and receiver
CA2163473A1 (en) Cancellation of Precursor Intersymbol Interference in Magnetic Recording Channels
CA2331831A1 (en) Dtv signal with gcr components in plural-data-segment frame headers and receiver apparatus for such signal
CA2293229A1 (en) Using equalized data for filter selection in hdtv receiver
WO2004105287A3 (en) Method and apparatus for equalization and crosstalk mitigation
DE3573500D1 (en) Receiver for time division multiplexed television transmission comprising a frequency demodulator
CA2104338A1 (en) Adaptive Equalizer Method and Apparatus
EP0725497A3 (en) Data receiving apparatus
EP1922814A4 (en) Joint space-time optimum filters (jstof) for interference cancellation
WO1998048545A3 (en) Method and apparatus for processing a signal in a telecommunication apparatus
EP0905945A3 (en) A method for stabilizing the operation of fractionally spaced equalizers in digital signal receivers

Legal Events

Date Code Title Description
EEER Examination request
MKLA Lapsed
MKLA Lapsed

Effective date: 20100920