BRPI0419205A - método e aparelho para recuperação de portadora utilizando múltiplas fontes - Google Patents

método e aparelho para recuperação de portadora utilizando múltiplas fontes

Info

Publication number
BRPI0419205A
BRPI0419205A BRPI0419205-2A BRPI0419205A BRPI0419205A BR PI0419205 A BRPI0419205 A BR PI0419205A BR PI0419205 A BRPI0419205 A BR PI0419205A BR PI0419205 A BRPI0419205 A BR PI0419205A
Authority
BR
Brazil
Prior art keywords
phase
multiple sources
phase estimator
carrier recovery
estimator
Prior art date
Application number
BRPI0419205-2A
Other languages
English (en)
Inventor
Joshua Lawrence Koslov
Original Assignee
Thomson Licensing
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 filed Critical Thomson Licensing
Publication of BRPI0419205A publication Critical patent/BRPI0419205A/pt

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L27/00—Modulated-carrier systems
    • H04L27/18—Phase-modulated carrier systems, i.e. using phase-shift keying
    • H04L27/22—Demodulator circuits; Receiver circuits
    • H04L27/227—Demodulator circuits; Receiver circuits using coherent demodulation
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L27/00—Modulated-carrier systems
    • H04L27/0014—Carrier regulation
    • H04L2027/0024—Carrier regulation at the receiver end
    • H04L2027/0026—Correction of carrier offset
    • H04L2027/003—Correction of carrier offset at baseband only
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L27/00—Modulated-carrier systems
    • H04L27/0014—Carrier regulation
    • H04L2027/0044—Control loops for carrier regulation
    • H04L2027/0046—Open loops
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L27/00—Modulated-carrier systems
    • H04L27/0014—Carrier regulation
    • H04L2027/0083—Signalling arrangements
    • H04L2027/0087—Out-of-band signals, (e.g. pilots)

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Digital Transmission Methods That Use Modulated Carrier Waves (AREA)

Abstract

MéTODO E APARELHO PARA RECUPERAçãO DE PORTADORA UTILIZANDO MúLTIPLAS FONTES. Um receptor compreende um estimador de fase de múltiplas fontes. Esse último compreende um estimador de fase piloto, um estimador de fase de média baseado em dados, um seletor e um controlador de interpolação comum. O seletor seleciona, ou estimador de fase piloto, ou o estimador de fase de média baseada em dados como a fonte de estimativas de fase determinada em tempos específicos. Em outros tempos, o controlador de interpolação comum provê estimativas de fase interpoladas como uma função de uma interpolação linear baseada em uma estimativa de fase determinada, respectiva.
BRPI0419205-2A 2004-11-16 2004-11-16 método e aparelho para recuperação de portadora utilizando múltiplas fontes BRPI0419205A (pt)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PCT/US2004/038654 WO2006054993A1 (en) 2004-11-16 2004-11-16 Method and apparatus for carrier recovery using multiple sources

Publications (1)

Publication Number Publication Date
BRPI0419205A true BRPI0419205A (pt) 2007-12-18

Family

ID=34959620

Family Applications (1)

Application Number Title Priority Date Filing Date
BRPI0419205-2A BRPI0419205A (pt) 2004-11-16 2004-11-16 método e aparelho para recuperação de portadora utilizando múltiplas fontes

Country Status (6)

Country Link
US (1) US20080292029A1 (pt)
EP (1) EP1813071A1 (pt)
JP (1) JP4714746B2 (pt)
CN (1) CN101057470B (pt)
BR (1) BRPI0419205A (pt)
WO (1) WO2006054993A1 (pt)

Families Citing this family (16)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
BRPI0419199B1 (pt) * 2004-11-16 2018-06-05 Thomson Licensing Método e aparelho para recuperação de portadora utilizando interpolação de fase com assistência
US8204156B2 (en) * 2008-12-31 2012-06-19 Intel Corporation Phase error detection with conditional probabilities
BRPI1011199A2 (pt) 2009-05-29 2016-03-15 Thomson Licensing método e equipamento para recuperação de sincronização iterativa
CN102511126B (zh) * 2011-04-21 2014-09-17 华为技术有限公司 相差补偿装置与相差补偿方法
US9513609B2 (en) * 2013-02-01 2016-12-06 Nxp B.V. Wireless communications using active modulation
CN107295366B (zh) * 2016-04-05 2020-03-31 中国科学院上海高等研究院 一种广播多管道业务数据调度复用方法与系统
US9819456B1 (en) 2016-10-17 2017-11-14 Seagate Technology Llc Preamble detection and frequency offset determination
US10164760B1 (en) 2016-10-18 2018-12-25 Seagate Technology Llc Timing excursion recovery
US10152457B1 (en) 2016-10-25 2018-12-11 Seagate Technology Llc Target parameter adaptation
US10277718B1 (en) 2016-11-22 2019-04-30 Seagate Technology Llc Preamble defect detection and mitigation
US10084553B1 (en) * 2016-12-22 2018-09-25 Seagate Technology Llc Iterative recovery from baseline or timing disturbances
US9979573B1 (en) 2016-12-23 2018-05-22 Seagate Technology Llc Position error signal burst demodulation
US9998136B1 (en) 2017-02-17 2018-06-12 Seagate Technology Llc Loop consistency using multiple channel estimates
US10382166B1 (en) 2017-02-22 2019-08-13 Seagate Technology Llc Constrained receiver parameter optimization
US9928854B1 (en) 2017-05-03 2018-03-27 Seagate Technology Llc MISO equalization with ADC averaging
US12413245B2 (en) * 2023-03-16 2025-09-09 Cisco Technology, Inc. Maximum a posteriori detector for linear and nonlinear channel impairment

Family Cites Families (27)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0716520B1 (en) * 1994-06-23 2004-05-12 NTT DoCoMo, Inc. Cdma demodulation circuit and demodulating method
JP2855170B2 (ja) * 1994-06-23 1999-02-10 エヌ・ティ・ティ移動通信網株式会社 Ｃｄｍａ復調回路および復調方法
JP3013763B2 (ja) * 1995-08-25 2000-02-28 日本電気株式会社 キャリア同期ユニット
JP3446801B2 (ja) * 1997-02-13 2003-09-16 日本電信電話株式会社 バースト信号復調回路
US5940450A (en) * 1997-02-28 1999-08-17 Hitachi America, Ltd. Carrier recovery method and apparatus
US6072841A (en) * 1997-07-01 2000-06-06 Hughes Electronics Corporation Block phase estimator for the coherent detection of non-differentially phase modulated data bursts on rician fading channels
JP3659800B2 (ja) * 1998-04-15 2005-06-15 三菱電機株式会社 位相誤差検出装置
JP2982797B1 (ja) * 1998-08-03 1999-11-29 日本電気株式会社 Ｃｄｍａ受信装置における復調回路
JP2000244598A (ja) * 1999-02-19 2000-09-08 Matsushita Electric Ind Co Ltd 制御装置、周波数オフセット補償装置、及びそれを用いた復調装置
JP3368875B2 (ja) * 1999-11-05 2003-01-20 日本電気株式会社 周波数オフセット補正システム及び方法
US6963602B1 (en) * 2000-01-05 2005-11-08 Advanced Micro Devices, Inc. Digital correction method and system
EP1162803A1 (en) 2000-06-05 2001-12-12 Telefonaktiebolaget L M Ericsson (Publ) Frequency tracking device and method for a receiver of a multi-carrier communication system
KR100379395B1 (ko) * 2000-08-23 2003-04-10 엘지전자 주식회사 반송파 복구 장치 및 방법
US7012977B2 (en) * 2000-12-29 2006-03-14 Telefonaktiebolaget Lm Ericsson (Publ) System, method and apparatus for wireless channel parameter estimation in spread spectrum communication systems
US7085239B2 (en) * 2001-01-05 2006-08-01 Qualcomm, Incorporated Method and apparatus for determining the forward link closed loop power control set point in a wireless packet data communication system
US7079574B2 (en) * 2001-01-17 2006-07-18 Radiant Networks Plc Carrier phase recovery system for adaptive burst modems and link hopping radio networks
KR100402906B1 (ko) * 2001-02-08 2003-10-22 (주)아이앤씨테크놀로지 직교주파수분할다중방식에서의 주파수 오프셋 동기화 장치및 방법
US6633616B2 (en) * 2001-02-21 2003-10-14 Magis Networks, Inc. OFDM pilot tone tracking for wireless LAN
US6628707B2 (en) * 2001-05-04 2003-09-30 Radiant Networks Plc Adaptive equalizer system for short burst modems and link hopping radio networks
CN1166101C (zh) * 2001-10-26 2004-09-08 宁波大学 一种实现cdma基带系统相干解调的方法
US20030128777A1 (en) * 2001-12-04 2003-07-10 Linsky Stuart T. Decision directed phase locked loops (DD-PLL) with multiple initial phase and/or frequency estimates in digital communication systems
US20030128660A1 (en) * 2002-01-09 2003-07-10 Atsushi Ito OFDM communications apparatus, OFDM communications method, and OFDM communications program
US7139340B2 (en) * 2002-06-28 2006-11-21 Hitachi, Ltd. Robust OFDM carrier recovery methods and apparatus
US6999778B2 (en) * 2002-07-03 2006-02-14 Denso Corporation Multipath assistance for pilot phase measurement processes
DE10251313B4 (de) * 2002-11-04 2007-05-03 Advanced Micro Devices, Inc., Sunnyvale Gemeinsame Benutzung eines Schaltkreises für Frequenz- und Phasenfehlerkorrektur
EP1513309B1 (en) * 2003-09-05 2007-01-03 Agence Spatiale Europeenne Process for pilot-aided carrier phase synchronisation
US7321550B2 (en) * 2004-02-17 2008-01-22 Industrial Technology Research Institute Method of equalization in an OFDM system

Also Published As

Publication number Publication date
CN101057470A (zh) 2007-10-17
CN101057470B (zh) 2010-04-14
EP1813071A1 (en) 2007-08-01
JP4714746B2 (ja) 2011-06-29
US20080292029A1 (en) 2008-11-27
JP2008521281A (ja) 2008-06-19
WO2006054993A1 (en) 2006-05-26

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Legal Events

Date Code Title Description
B08F Application dismissed because of non-payment of annual fees [chapter 8.6 patent gazette]
B08K Patent lapsed as no evidence of payment of the annual fee has been furnished to inpi [chapter 8.11 patent gazette]