BRPI0520714A2 - método e equipamento para determinar deslocamento de freqüência em um receptor - Google Patents

método e equipamento para determinar deslocamento de freqüência em um receptor

Info

Publication number
BRPI0520714A2
BRPI0520714A2 BRPI0520714-2A BRPI0520714A BRPI0520714A2 BR PI0520714 A2 BRPI0520714 A2 BR PI0520714A2 BR PI0520714 A BRPI0520714 A BR PI0520714A BR PI0520714 A2 BRPI0520714 A2 BR PI0520714A2
Authority
BR
Brazil
Prior art keywords
equipment
determining
receiver
signal
frequency
Prior art date
Application number
BRPI0520714-2A
Other languages
English (en)
Inventor
John Sidney Stewart
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 BRPI0520714A2 publication Critical patent/BRPI0520714A2/pt

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L27/00—Modulated-carrier systems
    • H04L27/0014—Carrier regulation
    • 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
    • H04L2027/0034—Correction of carrier offset using hypothesis testing
    • 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
    • H04L2027/0053—Closed loops

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Circuits Of Receivers In General (AREA)

Abstract

MéTODO E EQUIPAMENTO PARA DETERMINAR DESLOCAMENTO DE FREQüêNCIA EM UM RECEPTOR. As modalidades descritas estão relacionadas a um método e um equipamento para determinar o deslocamento de freqUência em um receptor. O equipamento inclui um circuito de ligação (200) . O circuito de ligação inclui um deslocador de freqUências (204, 206) para transformar o sinal de ali- mentação, um detector (210) para medir a magnitude do sinal transformado, e um controlador (220) para determinar um valor máximo de magnitude de uma pluralidade de magnitudes medidas pelo detector (210) como resultado do controle do deslocador de freqUências (204, 206) . O método (400) inclui receber um sinal de alimentação, misturar o sinal com uma pluralidade de freqUências (402), processar a pluralidade de segundos sinais para gerar uma pluralidade de magnitudes e uma pluralidade de valores de freqUências associados, (408) e determinar uma magnitude máxima dentre a pluralidade de magnitudes (416)
BRPI0520714-2A 2005-12-01 2005-12-01 método e equipamento para determinar deslocamento de freqüência em um receptor BRPI0520714A2 (pt)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PCT/US2005/043472 WO2007064323A1 (en) 2005-12-01 2005-12-01 Method and apparatus for determining frequency offset in a receiver

Publications (1)

Publication Number Publication Date
BRPI0520714A2 true BRPI0520714A2 (pt) 2009-05-26

Family

ID=36752100

Family Applications (1)

Application Number Title Priority Date Filing Date
BRPI0520714-2A BRPI0520714A2 (pt) 2005-12-01 2005-12-01 método e equipamento para determinar deslocamento de freqüência em um receptor

Country Status (6)

Country Link
US (1) US20090197553A1 (pt)
EP (1) EP1958406A1 (pt)
JP (1) JP2009517969A (pt)
CN (1) CN101322369A (pt)
BR (1) BRPI0520714A2 (pt)
WO (1) WO2007064323A1 (pt)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103685113B (zh) * 2012-09-10 2016-12-21 扬智电子科技(上海)有限公司 一种可对抗大频偏的频率补偿方法和装置
CN105450572B (zh) * 2014-08-27 2018-12-25 华为技术有限公司 Ofdm系统及其中心频率调整方法
CN112485520B (zh) * 2020-12-03 2024-03-22 成都市精准时空科技有限公司 基于电压采样的绝对频差测量方法及系统及装置及介质
CN116185128B (zh) * 2023-03-06 2024-05-17 珠海极海半导体有限公司 Mcu芯片内部时钟校准方法及电路

Family Cites Families (29)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
SE460086B (sv) * 1987-11-27 1989-09-04 Ericsson Telefon Ab L M Anordning foer korrigering av frekvensen i en koherent mottagare
KR930007300B1 (ko) * 1989-11-29 1993-08-04 삼성전기 주식회사 더블 콘버젼(Double Conversion) 튜너의 자동 동조방법
JPH0738023B2 (ja) * 1990-02-13 1995-04-26 パイオニア株式会社 Ｇｐｓ受信機の衛星電波捕捉方法
US5287556A (en) * 1990-09-28 1994-02-15 Motorola, Inc. Interference reduction using an adaptive receiver filter, signal strength, and BER sensing
US5287388A (en) * 1991-06-25 1994-02-15 Kabushiki Kaisha Toshiba Frequency offset removal method and apparatus
JPH06138158A (ja) * 1992-10-27 1994-05-20 Fuji Xerox Co Ltd 妨害波識別システム
JP3214159B2 (ja) * 1993-01-22 2001-10-02 三菱電機株式会社 キャリア検出器
JPH07147529A (ja) * 1993-06-28 1995-06-06 Hitachi Ltd 分割帯域信号強度測定法を用いた自動周波数制御装置及び制御方法
JPH0799458A (ja) * 1993-09-29 1995-04-11 Uniden Corp Ｓｃｐｃ信号受信機能付き衛星放送受信機
JP3120136B2 (ja) * 1994-04-26 2000-12-25 松下電器産業株式会社 Ｔｄｍａデータ受信装置
US6023491A (en) * 1994-06-21 2000-02-08 Matsushita Electric Industrail Co., Ltd. Demodulation apparatus performing different frequency control functions using separately provided oscillators
US5598441A (en) * 1994-10-13 1997-01-28 Westinghouse Electric Corp. Carrier acquisition technique for mobile radio QPSK demodulator
JP3563231B2 (ja) * 1997-04-04 2004-09-08 株式会社デノン 周波数制御装置および方法、受信装置、ならびに、通信装置
US6167246A (en) * 1997-05-09 2000-12-26 Micrel Incorporated Fully integrated all-CMOS AM receiver
JP3549361B2 (ja) * 1997-05-13 2004-08-04 三菱電機株式会社 ディジタル音声放送受信機
US5999793A (en) * 1997-06-18 1999-12-07 Lsi Logic Corporation Satellite receiver tuner chip with frequency synthesizer having an externally configurable charge pump
US6249539B1 (en) * 1998-06-15 2001-06-19 Qualcomm Incorporated System and method for narrowing the range of frequency uncertainty of a doppler shifted signal
GB9818400D0 (en) * 1998-08-25 1998-10-21 Philips Electronics Nv Low if reciever
US6205334B1 (en) * 1998-11-24 2001-03-20 Ericsson Inc. Accelerated scanning of cellular channels by cellular radiotelephones
JP3622565B2 (ja) * 1999-03-31 2005-02-23 株式会社デンソー レーダ装置
KR100308299B1 (ko) * 1999-06-03 2001-10-29 구자홍 튜닝 미세 조정 방법
CN1350729A (zh) * 2000-03-31 2002-05-22 三菱电机株式会社 频率自动控制方法和装置以及解调装置
WO2002009382A1 (en) * 2000-07-25 2002-01-31 Koninklijke Philips Electronics N.V. Decision directed frequency offset estimation
FI109624B (fi) * 2000-12-04 2002-09-13 Nokia Corp Menetelmä suodattimen virittämiseksi
US7593367B2 (en) * 2002-06-14 2009-09-22 Qualcomm Incorporated Frequency scan for CDMA acquisition
WO2005027451A1 (en) * 2003-09-12 2005-03-24 Ems Technologies Canada, Ltd. Joint synchronizer and decoder
JP4365241B2 (ja) * 2004-03-09 2009-11-18 富士通株式会社 妨害電波自動測定装置
US7424278B2 (en) * 2004-12-23 2008-09-09 Agere Systems Inc. Low IF mixer with improved selectivity performance
US7616936B2 (en) * 2006-12-14 2009-11-10 Cisco Technology, Inc. Push-to-talk system with enhanced noise reduction

Also Published As

Publication number Publication date
EP1958406A1 (en) 2008-08-20
US20090197553A1 (en) 2009-08-06
WO2007064323A1 (en) 2007-06-07
CN101322369A (zh) 2008-12-10
JP2009517969A (ja) 2009-04-30

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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]

Free format text: REFERENTE A 8A 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: REFERENTE AO DESPACHO 8.6 PUBLICADO NA RPI 2260 DE 29/04/2014.