BR9711494B1 - sistema de recuperação de sincronização do componente qam. - Google Patents

sistema de recuperação de sincronização do componente qam.

Info

Publication number
BR9711494B1
BR9711494B1 BRPI9711494-4A BR9711494A BR9711494B1 BR 9711494 B1 BR9711494 B1 BR 9711494B1 BR 9711494 A BR9711494 A BR 9711494A BR 9711494 B1 BR9711494 B1 BR 9711494B1
Authority
BR
Brazil
Prior art keywords
recovery system
sync recovery
qam component
component sync
qam
Prior art date
Application number
BRPI9711494-4A
Other languages
English (en)
Other versions
BR9711494A (pt
Inventor
Paul Gothard Knutson
Kumar Ramaswamy
David Lowell Mcneely
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
Priority claimed from GBGB9619712.4A external-priority patent/GB9619712D0/en
Priority claimed from US08/835,915 external-priority patent/US5878088A/en
Application filed filed Critical
Publication of BR9711494A publication Critical patent/BR9711494A/pt
Publication of BR9711494B1 publication Critical patent/BR9711494B1/pt

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L7/00—Arrangements for synchronising receiver with transmitter
    • H04L7/02—Speed or phase control by the received code signals, the signals containing no special synchronisation information
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L7/00—Arrangements for synchronising receiver with transmitter
    • H04L7/0016—Arrangements for synchronising receiver with transmitter correction of synchronization errors
    • H04L7/002—Arrangements for synchronising receiver with transmitter correction of synchronization errors correction by interpolation
    • H04L7/0029—Arrangements for synchronising receiver with transmitter correction of synchronization errors correction by interpolation interpolation of received data signal
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L27/00—Modulated-carrier systems
    • H04L27/32—Carrier systems characterised by combinations of two or more of the types covered by groups H04L27/02, H04L27/10, H04L27/18 or H04L27/26
    • H04L27/34—Amplitude- and phase-modulated carrier systems, e.g. quadrature-amplitude modulated carrier systems
    • H04L27/38—Demodulator circuits; Receiver circuits
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L7/00—Arrangements for synchronising receiver with transmitter
    • H04L7/02—Speed or phase control by the received code signals, the signals containing no special synchronisation information
    • H04L7/033—Speed or phase control by the received code signals, the signals containing no special synchronisation information using the transitions of the received signal to control the phase of the synchronising-signal-generating means, e.g. using a phase-locked loop
    • H04L7/0334—Processing of samples having at least three levels, e.g. soft decisions
    • H04L7/0335—Gardner detector

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Digital Transmission Methods That Use Modulated Carrier Waves (AREA)
  • Synchronisation In Digital Transmission Systems (AREA)
BRPI9711494-4A 1996-09-20 1997-09-08 sistema de recuperação de sincronização do componente qam. BR9711494B1 (pt)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
GBGB9619712.4A GB9619712D0 (en) 1996-09-20 1996-09-20 Digital variable symbol timing recovery system for qam
US08/835,915 US5878088A (en) 1997-04-10 1997-04-10 Digital variable symbol timing recovery system for QAM
PCT/US1997/015888 WO1998012836A1 (en) 1996-09-20 1997-09-08 Component timing recovery system for qam

Publications (2)

Publication Number Publication Date
BR9711494A BR9711494A (pt) 1999-08-24
BR9711494B1 true BR9711494B1 (pt) 2010-11-03

Family

ID=26310077

Family Applications (1)

Application Number Title Priority Date Filing Date
BRPI9711494-4A BR9711494B1 (pt) 1996-09-20 1997-09-08 sistema de recuperação de sincronização do componente qam.

Country Status (9)

Country Link
EP (1) EP0927472B1 (pt)
JP (1) JP3886159B2 (pt)
KR (1) KR100504761B1 (pt)
CN (1) CN1135780C (pt)
AU (1) AU4260397A (pt)
BR (1) BR9711494B1 (pt)
DE (1) DE69733264T2 (pt)
MY (1) MY117729A (pt)
WO (1) WO1998012836A1 (pt)

Families Citing this family (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE60030801T2 (de) 1999-05-11 2007-09-06 Koninklijke Philips Electronics N.V. Übertragungssystem und Empfänger mit Vorrichtung zur Dezimation
EP1058451B9 (en) * 1999-05-31 2006-10-25 STMicroelectronics S.r.l. Digital AM demodulator, particularly for demodulating TV signals
US6782058B1 (en) * 2001-01-24 2004-08-24 Advanced Micro Devices, Inc. Device and method for interpolated signal resampling between sampling clock cycles
KR100497351B1 (ko) * 2001-02-08 2005-06-23 삼성전자주식회사 시분할 다중화에 따른 위상 불일치 보상 장치 및 방법
DE10127447C1 (de) * 2001-06-07 2002-10-10 Infineon Technologies Ag Verfahren zum digitalen Verarbeiten eines analogen Datenstroms und Schaltungsanordnung
KR100454483B1 (ko) 2002-03-04 2004-10-28 삼성전자주식회사 아이/큐 복조장치 및 그의 아이/큐 신호생성방법
KR20040008872A (ko) * 2002-07-19 2004-01-31 주식회사 오픈솔루션 오.에프.디.엠 수신기
CN1798298A (zh) * 2004-12-20 2006-07-05 三星电子株式会社 数字多媒体接收机中的解调装置
JP4186083B2 (ja) 2006-10-03 2008-11-26 日本電気株式会社 クロック同期回路
WO2010004755A1 (ja) * 2008-07-09 2010-01-14 株式会社アドバンテスト 試験装置、及び試験方法
WO2010066289A1 (en) * 2008-12-09 2010-06-17 Telefonaktiebolaget L M Ericsson (Publ) Symbol-timing recovery techniques for multi-branch receivers
JP5158034B2 (ja) * 2009-08-12 2013-03-06 富士通株式会社 無線装置及び信号処理方法

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS62298255A (ja) * 1986-06-18 1987-12-25 Fujitsu Ltd 識別装置
JP3003826B2 (ja) * 1992-12-11 2000-01-31 三菱電機株式会社 クロック再生回路
US5943369A (en) * 1996-02-27 1999-08-24 Thomson Consumer Electronics, Inc. Timing recovery system for a digital signal processor

Also Published As

Publication number Publication date
EP0927472B1 (en) 2005-05-11
AU4260397A (en) 1998-04-14
MY117729A (en) 2004-07-31
CN1238085A (zh) 1999-12-08
CN1135780C (zh) 2004-01-21
JP3886159B2 (ja) 2007-02-28
KR100504761B1 (ko) 2005-07-29
DE69733264D1 (de) 2005-06-16
JP2001500707A (ja) 2001-01-16
KR20000036158A (ko) 2000-06-26
BR9711494A (pt) 1999-08-24
EP0927472A1 (en) 1999-07-07
DE69733264T2 (de) 2006-01-26
WO1998012836A1 (en) 1998-03-26

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Legal Events

Date Code Title Description
B07A Technical examination (opinion): publication of technical examination (opinion) [chapter 7.1 patent gazette]
B09A Decision: intention to grant [chapter 9.1 patent gazette]
B16A Patent or certificate of addition of invention granted

Free format text: PRAZO DE VALIDADE: 10 (DEZ) ANOS CONTADOS A PARTIR DE 03/11/2010, OBSERVADAS AS CONDICOES LEGAIS.

B21F Lapse acc. art. 78, item iv - on non-payment of the annual fees in time

Free format text: REFERENTE A 18A ANUIDADE.

B24J Lapse because of non-payment of annual fees (definitively: art 78 iv lpi, resolution 113/2013 art. 12)

Free format text: EM VIRTUDE DA EXTINCAO PUBLICADA NA RPI 2322 DE 07-07-2015 E CONSIDERANDO AUSENCIA DE MANIFESTACAO DENTRO DOS PRAZOS LEGAIS, INFORMO QUE CABE SER MANTIDA A EXTINCAO DA PATENTE E SEUS CERTIFICADOS, CONFORME O DISPOSTO NO ARTIGO 12, DA RESOLUCAO 113/2013.