BRPI0503301A - Método e aparelho para controlar de maneira automática uma etapa de avanço de um equalizador do tipo lms - Google Patents

Método e aparelho para controlar de maneira automática uma etapa de avanço de um equalizador do tipo lms

Info

Publication number
BRPI0503301A
BRPI0503301A BR0503301-2A BRPI0503301A BRPI0503301A BR PI0503301 A BRPI0503301 A BR PI0503301A BR PI0503301 A BRPI0503301 A BR PI0503301A BR PI0503301 A BRPI0503301 A BR PI0503301A
Authority
BR
Brazil
Prior art keywords
lms
equalizer
advance step
optimized
advance
Prior art date
Application number
BR0503301-2A
Other languages
English (en)
Inventor
Sung-Woo Park
Original Assignee
Samsung Electronics Co Ltd
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 Samsung Electronics Co Ltd filed Critical Samsung Electronics Co Ltd
Publication of BRPI0503301A publication Critical patent/BRPI0503301A/pt

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B7/00—Radio transmission systems, i.e. using radiation field
    • H04B7/005—Control of transmission; Equalising
    • 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
    • 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
    • H04L25/03038—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
    • 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
    • H03—ELECTRONIC CIRCUITRY
    • H03H—IMPEDANCE NETWORKS, e.g. RESONANT CIRCUITS; RESONATORS
    • H03H21/00—Adaptive networks
    • H03H21/0012—Digital adaptive filters
    • H03H2021/007—Computation saving measures; Accelerating measures
    • H03H2021/0076—Measures relating to the convergence time
    • H03H2021/0078—Measures relating to the convergence time varying the step size
    • 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
    • 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
    • H04L2025/03414—Multicarrier
    • 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
    • H04L2025/03477—Tapped delay lines not time-recursive
    • 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
    • H04L2025/03617—Time recursive algorithms
    • 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
    • H04L2025/03681—Control of adaptation
    • H04L2025/03687—Control of adaptation of step size

Landscapes

  • Engineering & Computer Science (AREA)
  • Signal Processing (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Power Engineering (AREA)
  • Multimedia (AREA)
  • Cable Transmission Systems, Equalization Of Radio And Reduction Of Echo (AREA)
  • Tone Control, Compression And Expansion, Limiting Amplitude (AREA)

Abstract

"MéTODO E APARELHO PARA CONTROLAR DE MANEIRA AUTOMáTICA UMA ETAPA DE AVANçO DE UM EQUALIZADOR DO TIPO LMS". A presente invenção refere-se a um método e aparelho para controlar de maneira automática uma etapa de avanço de um equalizador de mínimos quadrados médios (LMS). Uma etapa de avanço otimizada pode ser selecionada verificando uma relação de sinal para ruído (SNR) do equalizador (LMS) saída de acordo com uma mudança na etapa de avanço. O equalizador LMS inclui um bloco de decisão de etapa de avanço, que faz uma modificação relativamente grande na etapa de avanço dentro de limites predeterminados superior e inferior, e verifica a SNR da saída do equalizador LMS de acordo com a modificação feita na etapa de avanço. Se a SNR se torna maior do que um certo valor, a etapa de avanço é novamente ajustada com uma precisão mais elevada para selecionar uma etapa de avanço otimizada em um dado ambiente de canal. Além disto, o equalizador LMS é capaz de selecionar um coeficiente de derivação otimizado dentro de um período de tempo mais curto e um sistema de hardware utilizado para implementar o aparelho para controlar automaticamente a etapa de avanço é simples, ainda otimizado em um dado o ambiente de canal.
BR0503301-2A 2004-06-28 2005-05-23 Método e aparelho para controlar de maneira automática uma etapa de avanço de um equalizador do tipo lms BRPI0503301A (pt)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
KR1020040048939A KR100603202B1 (ko) 2004-06-28 2004-06-28 Ｌｍｓ 등화기의 스텝사이즈 자동 제어방법 및 제어장치

Publications (1)

Publication Number Publication Date
BRPI0503301A true BRPI0503301A (pt) 2006-02-07

Family

ID=36928511

Family Applications (1)

Application Number Title Priority Date Filing Date
BR0503301-2A BRPI0503301A (pt) 2004-06-28 2005-05-23 Método e aparelho para controlar de maneira automática uma etapa de avanço de um equalizador do tipo lms

Country Status (6)

Country Link
US (1) US20050286624A1 (pt)
KR (1) KR100603202B1 (pt)
CN (1) CN1716926A (pt)
BR (1) BRPI0503301A (pt)
CA (1) CA2508383A1 (pt)
NL (1) NL1029113C2 (pt)

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CN101310552A (zh) * 2005-11-04 2008-11-19 汤姆森特许公司 在低信噪比下感测高级电视系统委员会信号的装置和方法
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US20090052588A1 (en) * 2006-02-16 2009-02-26 Wen Gao Apparatus and Method for Sensing an Atsc Signal in Low Signal-to-Noise Ratio
CN101502068B (zh) * 2006-08-07 2012-05-30 Sk电信有限公司 码片均衡器和均衡方法
US20080144708A1 (en) * 2006-12-19 2008-06-19 Mediatek Inc. Method and apparatus for equalization
WO2008116480A1 (en) * 2007-03-26 2008-10-02 Micronas Gmbh Channel estimation method and device for tds-ofdm systems
JP4911780B2 (ja) * 2007-12-20 2012-04-04 シャープ株式会社 無線通信システム、受信装置及び受信方法
CN101217290B (zh) * 2008-01-16 2011-09-07 沖电气（新加坡）技术中心 Tds-ofdm系统中检测前信号的捕获方法
US9712276B2 (en) 2009-11-10 2017-07-18 Lantiq Beteiligungs-GmbH & Co. KG Error reporting in multi-carrier signal communication
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KR101652828B1 (ko) * 2010-05-20 2016-08-31 삼성전자주식회사 터치 센싱 시스템에서 적응형 디지털 필터링 방법 및 장치
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CN103178846B (zh) * 2013-03-29 2016-06-29 华南理工大学 一种利用lms算法进行adc校准的装置
CN103227623B (zh) * 2013-03-29 2015-09-30 北京邮电大学 可变步长的lms自适应滤波算法及滤波器
US9191120B2 (en) * 2013-09-04 2015-11-17 At&T Intellectual Property I, L.P. Method and system for optical impairments mitigation for high-speed optical communication systems
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CN109347457B (zh) * 2018-11-15 2022-02-01 苏州大学 一种变参数零吸引子自适应滤波器
US10749729B1 (en) * 2019-05-28 2020-08-18 Xilinx, Inc. System and method for automatic gain control adaptation
CN113271271B (zh) * 2020-02-17 2022-12-13 华为技术有限公司 自适应均衡器的步长调节方法、装置、信号接收机、系统
CN112803920B (zh) * 2020-12-30 2023-02-03 重庆邮电大学 基于改进lms算法的稀疏系统辨识方法和滤波器和系统
CN113595528B (zh) * 2021-07-30 2023-08-04 重庆长安汽车股份有限公司 一种基于幂函数的自适应变步长lms滤波器及其实现方法
CN115134867B (zh) * 2022-07-01 2024-07-26 白盒子(上海)微电子科技有限公司 一种自适应精度信息传输方法和装置
CN115408648A (zh) * 2022-09-06 2022-11-29 南京市计量监督检测院 力传感器非线性补偿方法、系统、存储介质及计算设备
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Also Published As

Publication number Publication date
NL1029113C2 (nl) 2006-07-11
CA2508383A1 (en) 2005-12-28
CN1716926A (zh) 2006-01-04
NL1029113A1 (nl) 2005-12-30
US20050286624A1 (en) 2005-12-29
KR100603202B1 (ko) 2006-07-24
KR20060000072A (ko) 2006-01-06

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Legal Events

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B03A Publication of a patent application or of a certificate of addition of invention [chapter 3.1 patent gazette]
B08F Application fees: application dismissed [chapter 8.6 patent gazette]

Free format text: REFERENTE A 5A ANUIDADE(S).

B08K Patent lapsed as no evidence of payment of the annual fee has been furnished to inpi [chapter 8.11 patent gazette]

Free format text: REFERENTE AO DESPACHO 8.6 PUBLICADO NA RPI 2086 DE 28/12/2010.