BR9914261A - Processo e aparelho para equalizar um sinal de rádio difusão digital compatìvel com amplitude modulada, processo para operar um receptor de rádio frequência para receber um sinal de rádio difusão digital compatìvel com amplitude modulada, e, receptor de rádio frequência para receber um sinal de rádio difusão digital compatìvel com amplitude modulada - Google Patents

Processo e aparelho para equalizar um sinal de rádio difusão digital compatìvel com amplitude modulada, processo para operar um receptor de rádio frequência para receber um sinal de rádio difusão digital compatìvel com amplitude modulada, e, receptor de rádio frequência para receber um sinal de rádio difusão digital compatìvel com amplitude modulada

Info

Publication number
BR9914261A
BR9914261A BR9914261-9A BR9914261A BR9914261A BR 9914261 A BR9914261 A BR 9914261A BR 9914261 A BR9914261 A BR 9914261A BR 9914261 A BR9914261 A BR 9914261A
Authority
BR
Brazil
Prior art keywords
signals
signal
radio frequency
digitally
compatible
Prior art date
Application number
BR9914261-9A
Other languages
English (en)
Inventor
Don R Goldston
David Carl Hartup
Marcus M Matherne
Original Assignee
Ibiquity Digital Corp
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 Ibiquity Digital Corp filed Critical Ibiquity Digital Corp
Publication of BR9914261A publication Critical patent/BR9914261A/pt

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04H—BROADCAST COMMUNICATION
    • H04H20/00—Arrangements for broadcast or for distribution combined with broadcast
    • H04H20/28—Arrangements for simultaneous broadcast of plural pieces of information
    • H04H20/30—Arrangements for simultaneous broadcast of plural pieces of information by a single channel
    • 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

Landscapes

  • Engineering & Computer Science (AREA)
  • Signal Processing (AREA)
  • Power Engineering (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Cable Transmission Systems, Equalization Of Radio And Reduction Of Echo (AREA)
  • Circuits Of Receivers In General (AREA)
  • Digital Transmission Methods That Use Modulated Carrier Waves (AREA)
  • Noise Elimination (AREA)

Abstract

"PROCESSO E APARELHO PARA EQUALIZAR UM SINAL DE RáDIO DIFUSãO DIGITAL COMPATìVEL COM AMPLITUDE MODULADA, PROCESSO PARA OPERAR UM RECEPTOR DE RáDIO FREQuêNCIA PARA RECEBER UM SINAL DE RáDIO DIFUSãO DIGITAL COMPATìVEL COM AMPLITUDE MODULADA, E, RECEPTOR DE RáDIO FREQuêNCIA PARA RECEBER UM SINAL DE RáDIO DIFUSãO DIGITAL COMPATìVEL COM AMPLITUDE MODULADA''. é provido um processo para equalizar um sinal de rádio difusão digital compatível com amplitude modulada, que inclui um sinal de rádio freq³ência modulado em amplitude possuindo um primeiro espectro de freq³ência, o sinal de rádio freq³ência modulado em amplitude possuindo uma primeira portadora modulada por um sinal de programa analógico, diversos sinais de portadora modulados digitalmente posicionados dentro de uma largura de faixa que abrange o primeiro espectro de freq³ência, um primeiro grupo dos sinais de portadora modulados digitalmente incluindo sinais complementares e permanecendo dentro do primeiro espectro de freq³ência, e segundo e terceiro grupos dos sinais de portadora modulados digitalmente incluindo sinais não complementares e permanecendo fora do primeiro espectro de freq³ência. O processo inclui as etapas de produzir um primeiro sinal representativo das componentes em fase do sinal de rádio difusão digital compatível com amplitude modulada; produzir um segundo sinal representativo das componentes em quadratura de fase do sinal de rádio difusão digital compatível com amplitude modulada; usar os primeiro e segundo sinais como as entradas real imaginária para considerar a transformada de Fourier rápida dos primeiro e segundo sinais, para produzir diversos sinais transformados representativos dos dados no domínio da freq³ência; processar os sinais transformados multiplicando os sinais transformados por um vetor de equalização, com o vetor de equalização compreendendo diversos coeficientes de equalizador; atualizar os coeficiente de equalizador usados para os sinais complementares, interpolando coeficientes do vetor para os sinais não complementares. A invenção também abrange a operação de receptores de rádio freq³ência que utilizam o processo acima, bem como aparelho que realiza o processo acima e receptores de rádio freq³ência que utilizam o processo de equalização acima.
BR9914261-9A 1998-10-02 1999-09-02 Processo e aparelho para equalizar um sinal de rádio difusão digital compatìvel com amplitude modulada, processo para operar um receptor de rádio frequência para receber um sinal de rádio difusão digital compatìvel com amplitude modulada, e, receptor de rádio frequência para receber um sinal de rádio difusão digital compatìvel com amplitude modulada BR9914261A (pt)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US09/207,894 US6292511B1 (en) 1998-10-02 1998-10-02 Method for equalization of complementary carriers in an AM compatible digital audio broadcast system
PCT/US1999/020277 WO2000021228A1 (en) 1998-10-02 1999-09-02 Method for equalization of complementary carriers in an am compatible digital audio broadcast system

Publications (1)

Publication Number Publication Date
BR9914261A true BR9914261A (pt) 2001-07-03

Family

ID=22772412

Family Applications (1)

Application Number Title Priority Date Filing Date
BR9914261-9A BR9914261A (pt) 1998-10-02 1999-09-02 Processo e aparelho para equalizar um sinal de rádio difusão digital compatìvel com amplitude modulada, processo para operar um receptor de rádio frequência para receber um sinal de rádio difusão digital compatìvel com amplitude modulada, e, receptor de rádio frequência para receber um sinal de rádio difusão digital compatìvel com amplitude modulada

Country Status (13)

Country Link
US (2) US6292511B1 (pt)
EP (1) EP1119928B1 (pt)
JP (1) JP2002527933A (pt)
KR (1) KR20010075490A (pt)
CN (2) CN1529432A (pt)
AT (1) ATE268077T1 (pt)
AU (1) AU763811B2 (pt)
BR (1) BR9914261A (pt)
CA (1) CA2345616A1 (pt)
DE (1) DE69917665T2 (pt)
MX (1) MXPA01003332A (pt)
RU (1) RU2222871C2 (pt)
WO (1) WO2000021228A1 (pt)

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Also Published As

Publication number Publication date
EP1119928B1 (en) 2004-05-26
MXPA01003332A (es) 2004-02-17
AU763811B2 (en) 2003-07-31
US6570943B2 (en) 2003-05-27
EP1119928A1 (en) 2001-08-01
AU5807599A (en) 2000-04-26
WO2000021228A1 (en) 2000-04-13
RU2222871C2 (ru) 2004-01-27
CN1134127C (zh) 2004-01-07
CN1331871A (zh) 2002-01-16
CN1529432A (zh) 2004-09-15
ATE268077T1 (de) 2004-06-15
DE69917665T2 (de) 2005-06-16
JP2002527933A (ja) 2002-08-27
DE69917665D1 (de) 2004-07-01
US20020012392A1 (en) 2002-01-31
US6292511B1 (en) 2001-09-18
KR20010075490A (ko) 2001-08-09
CA2345616A1 (en) 2000-04-13

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

Free format text: REFERENTE A 7A, 8A E 9A ANUIDADES.

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 PUBLICADO NA RPI 1962 DE 12/08/2008.

B15K Others concerning applications: alteration of classification

Ipc: H04H 20/30 (2008.01), H04L 25/03 (2006.0