BR0312008A - Método e aparelho para redução de interferência de canais adjacentes em um receptor de multiplexação por divisão de frequência ortogonal (ofdm) - Google Patents

Método e aparelho para redução de interferência de canais adjacentes em um receptor de multiplexação por divisão de frequência ortogonal (ofdm)

Info

Publication number
BR0312008A
BR0312008A BR0312008-2A BR0312008A BR0312008A BR 0312008 A BR0312008 A BR 0312008A BR 0312008 A BR0312008 A BR 0312008A BR 0312008 A BR0312008 A BR 0312008A
Authority
BR
Brazil
Prior art keywords
ofdm
receiver
channel
frequency division
adjacent channels
Prior art date
Application number
BR0312008-2A
Other languages
English (en)
Inventor
Maxim B Belotserkovsky
Louis Robert Litwin Jr
Original Assignee
Thomson Licensing Sa
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 Thomson Licensing Sa filed Critical Thomson Licensing Sa
Publication of BR0312008A publication Critical patent/BR0312008A/pt

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L27/00—Modulated-carrier systems
    • H04L27/26—Systems using multi-frequency codes
    • 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
    • H04L25/03159—Arrangements for removing intersymbol interference operating in the frequency domain
    • 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
    • H04L2025/03522—Frequency domain
    • 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
    • H04L2025/03636—Algorithms using least mean square [LMS]
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L27/00—Modulated-carrier systems
    • H04L27/26—Systems using multi-frequency codes
    • H04L27/2601—Multicarrier modulation systems
    • H04L27/2647—Arrangements specific to the receiver only
    • H04L27/2655—Synchronisation arrangements
    • H04L27/2657—Carrier synchronisation
    • H04L27/266—Fine or fractional frequency offset determination and synchronisation
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L27/00—Modulated-carrier systems
    • H04L27/26—Systems using multi-frequency codes
    • H04L27/2601—Multicarrier modulation systems
    • H04L27/2647—Arrangements specific to the receiver only
    • H04L27/2655—Synchronisation arrangements
    • H04L27/2668—Details of algorithms
    • H04L27/2673—Details of algorithms characterised by synchronisation parameters
    • H04L27/2676—Blind, i.e. without using known symbols
    • H04L27/2679—Decision-aided
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L27/00—Modulated-carrier systems
    • H04L27/26—Systems using multi-frequency codes
    • H04L27/2601—Multicarrier modulation systems
    • H04L27/2647—Arrangements specific to the receiver only
    • H04L27/2655—Synchronisation arrangements
    • H04L27/2689—Link with other circuits, i.e. special connections between synchronisation arrangements and other circuits for achieving synchronisation
    • H04L27/2691—Link with other circuits, i.e. special connections between synchronisation arrangements and other circuits for achieving synchronisation involving interference determination or cancellation

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Power Engineering (AREA)
  • Cable Transmission Systems, Equalization Of Radio And Reduction Of Echo (AREA)
  • Noise Elimination (AREA)

Abstract

"MéTODO E APARELHO PARA REDUçãO DE INTERFERêNCIA DE CANAIS ADJACENTES EM UM RECEPTOR DE MULTIPLEXAçãO POR DIVISãO DE FREQuêNCIA ORTOGONAL (OFDM)". As modalidades reveladas se referem à redução de interferência de canais adjacentes em um receptor OFDM. Uma métrica de erro é monitorada e a freq³ência de portadora do canal desejado é lentamente ajustada em resposta à métrica de erro. Dessa maneira, o sinal OFDM recebido, incluindo o sinal desejado corrompido pelo canal interferente adjacente, pode ser deslocado até que cruzamentos zero do canal adjacente se alinhem com os compartimentos FFT. Um equalizador de múltiplas derivações pode ser então usado para remover a interferência de compartimento que resulta do deslocamento de freq³ência no canal desejado.
BR0312008-2A 2002-06-27 2003-06-25 Método e aparelho para redução de interferência de canais adjacentes em um receptor de multiplexação por divisão de frequência ortogonal (ofdm) BR0312008A (pt)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US10/185,572 US7227835B2 (en) 2002-06-27 2002-06-27 Method and apparatus for adjacent channel interference reduction in an orthogonal frequency division multiplexing (OFDM) receiver
PCT/US2003/019909 WO2004004232A1 (en) 2002-06-27 2003-06-25 Method and apparatus for adjacent channel interference reduction in an orthogonal frequency division multiplexing (ofdm) receiver

Publications (1)

Publication Number Publication Date
BR0312008A true BR0312008A (pt) 2005-03-29

Family

ID=29779669

Family Applications (1)

Application Number Title Priority Date Filing Date
BR0312008-2A BR0312008A (pt) 2002-06-27 2003-06-25 Método e aparelho para redução de interferência de canais adjacentes em um receptor de multiplexação por divisão de frequência ortogonal (ofdm)

Country Status (10)

Country Link
US (1) US7227835B2 (pt)
EP (1) EP1527559A4 (pt)
JP (1) JP4459049B2 (pt)
KR (1) KR100938602B1 (pt)
CN (1) CN100384164C (pt)
AU (1) AU2003251608A1 (pt)
BR (1) BR0312008A (pt)
MX (1) MXPA04012759A (pt)
MY (1) MY134326A (pt)
WO (1) WO2004004232A1 (pt)

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US7039131B2 (en) * 2002-08-02 2006-05-02 Agere Systems Inc. Carrier frequency offset estimation in a wireless communication system
US7002897B2 (en) * 2003-04-28 2006-02-21 Solarflare Communications, Inc. Multiple channel interference cancellation
US8363535B2 (en) * 2003-04-28 2013-01-29 Marvell International Ltd. Frequency domain echo and next cancellation
EP2993851B1 (en) * 2004-06-24 2019-04-24 Apple Inc. Preambles in ofdma system
US7944995B2 (en) * 2005-11-14 2011-05-17 Telefonaktiebolaget Lm Ericsson (Publ) Variable bandwidth receiver
US7808407B2 (en) 2007-06-15 2010-10-05 Solarflare Communications, Inc. Sub-channel distortion mitigation in parallel digital systems
US7948862B2 (en) 2007-09-26 2011-05-24 Solarflare Communications, Inc. Crosstalk cancellation using sliding filters
KR101359628B1 (ko) 2007-10-25 2014-02-06 삼성전자주식회사 인터캐리어 간섭 상쇄 방법, 상기 인터캐리어 간섭 상쇄방법을 이용한 등화방법, 장치, 및 ｏｆｄｍ 수신기
US7970067B1 (en) 2007-10-31 2011-06-28 Samsung Electronics Co., Ltd. OFDM receiver and method for enhancing channel estimation performance in communication environment where high doppler frequency exists
KR101023563B1 (ko) * 2009-03-26 2011-03-21 성균관대학교산학협력단 반복되는 훈련 심벌을 이용한 오에프디엠 주파수 옵셋 추정정확도 분석방법
CN102281220B (zh) 2010-06-12 2015-04-29 华为技术有限公司 数据流处理方法、设备及系统
US8532504B2 (en) * 2010-10-28 2013-09-10 Opnext Subsystems, Inc. Coherent optical receiver with adaptive equalizer initialization system
KR20140093099A (ko) * 2013-01-17 2014-07-25 한국전자통신연구원 광망 종단장치 및 광회선단말을 포함하는 직교 주파수 분할 다중접속 수동형 광가입자망
US9049069B2 (en) * 2013-03-21 2015-06-02 Broadcom Corporation Sparse equalizer system
CN103763037B (zh) * 2013-12-17 2017-02-22 记忆科技(深圳)有限公司 一种动态补偿接收器及动态补偿接收方法
US9350483B2 (en) * 2014-01-15 2016-05-24 Qualcomm Incorporated Mitigate adjacent channel interference and non-Wi-Fi interference
SG10201506538RA (en) * 2015-08-19 2017-03-30 Huawei Internat Pte Ltd Method and device for reducing adjacent channel interference in wlan system
KR102548249B1 (ko) 2017-05-15 2023-06-27 삼성전자주식회사 무선 수신기에서 타이밍 동기화를 갖는 캐리어 오프셋을 추정하는 방법 및 장치
TWI670944B (zh) * 2017-08-28 2019-09-01 瑞昱半導體股份有限公司 通訊裝置及通訊方法
US10547489B2 (en) 2018-03-13 2020-01-28 University Of South Florida OFDM reception under high adjacent channel interference while preserving frame structure

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TW583853B (en) * 2002-08-16 2004-04-11 Realtek Semiconductor Corp Compensation method for synchronization of sampling frequency and carrier frequency in multi-carrier communication system and apparatus thereof

Also Published As

Publication number Publication date
MY134326A (en) 2007-12-31
US20040001427A1 (en) 2004-01-01
WO2004004232A1 (en) 2004-01-08
MXPA04012759A (es) 2005-03-23
CN1666466A (zh) 2005-09-07
KR100938602B1 (ko) 2010-01-22
AU2003251608A1 (en) 2004-01-19
EP1527559A4 (en) 2011-03-09
KR20060066018A (ko) 2006-06-15
JP2005531259A (ja) 2005-10-13
US7227835B2 (en) 2007-06-05
CN100384164C (zh) 2008-04-23
JP4459049B2 (ja) 2010-04-28
EP1527559A1 (en) 2005-05-04

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Legal Events

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B08F Application dismissed because of non-payment of annual fees [chapter 8.6 patent gazette]

Free format text: REFERENTE A 12A ANUIDADE.

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: EM VIRTUDE DO ARQUIVAMENTO PUBLICADO NA RPI 2312 DE 28-04-2015 E CONSIDERANDO AUSENCIA DE MANIFESTACAO DENTRO DOS PRAZOS LEGAIS, INFORMO QUE CABE SER MANTIDO O ARQUIVAMENTO DO PEDIDO DE PATENTE, CONFORME O DISPOSTO NO ARTIGO 12, DA RESOLUCAO 113/2013.