BR0015462A - Métodos para a transmissão e recebimento de dados para um sistema de difusão de áudio digital - Google Patents

Métodos para a transmissão e recebimento de dados para um sistema de difusão de áudio digital

Info

Publication number
BR0015462A
BR0015462A BR0015462-8A BR0015462A BR0015462A BR 0015462 A BR0015462 A BR 0015462A BR 0015462 A BR0015462 A BR 0015462A BR 0015462 A BR0015462 A BR 0015462A
Authority
BR
Brazil
Prior art keywords
subcarriers
transmitting
digital audio
timing
methods
Prior art date
Application number
BR0015462-8A
Other languages
English (en)
Other versions
BRPI0015462B1 (pt
Inventor
Brian William Kroeger
Jeffrey S Baird
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 BR0015462A publication Critical patent/BR0015462A/pt
Publication of BRPI0015462B1 publication Critical patent/BRPI0015462B1/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
    • H04L27/2601—Multicarrier modulation systems
    • H04L27/2602—Signal structure
    • H04L27/261—Details of reference signals
    • H04L27/2613—Structure of the reference signals
    • 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
    • H04L25/0202—Channel estimation
    • H04L25/0224—Channel estimation using sounding signals
    • H04L25/0226—Channel estimation using sounding signals sounding signals per se
    • 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
    • H04L27/20—Modulator circuits; Transmitter circuits
    • H04L27/2032—Modulator circuits; Transmitter circuits for discrete phase modulation, e.g. in which the phase of the carrier is modulated in a nominally instantaneous manner
    • H04L27/2053—Modulator circuits; Transmitter circuits for discrete phase modulation, e.g. in which the phase of the carrier is modulated in a nominally instantaneous manner using more than one carrier, e.g. carriers with different phases
    • H04L27/206—Modulator circuits; Transmitter circuits for discrete phase modulation, e.g. in which the phase of the carrier is modulated in a nominally instantaneous manner using more than one carrier, e.g. carriers with different phases using a pair of orthogonal carriers, e.g. quadrature carriers
    • H04L27/2067—Modulator circuits; Transmitter circuits for discrete phase modulation, e.g. in which the phase of the carrier is modulated in a nominally instantaneous manner using more than one carrier, e.g. carriers with different phases using a pair of orthogonal carriers, e.g. quadrature carriers with more than two phase states
    • H04L27/2071—Modulator circuits; Transmitter circuits for discrete phase modulation, e.g. in which the phase of the carrier is modulated in a nominally instantaneous manner using more than one carrier, e.g. carriers with different phases using a pair of orthogonal carriers, e.g. quadrature carriers with more than two phase states in which the data are represented by the carrier phase, e.g. systems with differential coding
    • 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
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L5/00—Arrangements affording multiple use of the transmission path
    • H04L5/003—Arrangements for allocating sub-channels of the transmission path
    • H04L5/0048—Allocation of pilot signals, i.e. of signals known to the receiver
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04H—BROADCAST COMMUNICATION
    • H04H2201/00—Aspects of broadcast communication
    • H04H2201/10—Aspects of broadcast communication characterised by the type of broadcast system
    • H04H2201/18—Aspects of broadcast communication characterised by the type of broadcast system in band on channel [IBOC]
    • H04H2201/183—FM digital or hybrid
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04H—BROADCAST COMMUNICATION
    • H04H2201/00—Aspects of broadcast communication
    • H04H2201/10—Aspects of broadcast communication characterised by the type of broadcast system
    • H04H2201/20—Aspects of broadcast communication characterised by the type of broadcast system digital audio broadcasting [DAB]
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L1/00—Arrangements for detecting or preventing errors in the information received
    • H04L1/004—Arrangements for detecting or preventing errors in the information received by using forward error control
    • 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
    • H04L25/0202—Channel estimation
    • H04L25/0224—Channel estimation using sounding signals
    • H04L25/0228—Channel estimation using sounding signals with direct estimation from sounding signals
    • 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

Landscapes

  • Engineering & Computer Science (AREA)
  • Signal Processing (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Power Engineering (AREA)
  • Circuits Of Receivers In General (AREA)
  • Digital Transmission Methods That Use Modulated Carrier Waves (AREA)
  • Time-Division Multiplex Systems (AREA)
  • Synchronisation In Digital Transmission Systems (AREA)
  • Stereo-Broadcasting Methods (AREA)

Abstract

"MéTODOS PARA A TRANSMISSãO E RECEBIMENTO DE DADOS PARA UM SISTEMA DE DIFUSãO DE áUDIO DIGITAL". Método para a transmissão de dados em um sistema de difusão de áudio digital inclui as etapas de fornecimento de uma pluralidade de subportadoras multiplexadas por divisão de frequência ortogonal, com a subportadoras incluindo subportadoras de dados e subportadoras de referência; e modulação das subportadoras de dados com um sinal digital representativo de informação a ser transmitida. As subportadoras de referência são moduladas com uma seq³ência de bits de temporização, em que a seq³ência de bits de temporização inclui uma palavra de temporização de blocos não ambígua e o número de bits que compreende a palavra de temporização de bloco é menor do que a metade do número de bits na referida seq³ência de temporização. Então, as subportadoras multiplexadas por divisão de freq³ência ortogonal são transmitidas. Receptores, que detectam, diferencialmente, a palavra de temporização de bloco e usam a palavra de temporização de bloco para detectar, coerentemente, o sinal digital representativo de informação a ser transmitida também estão incluidos.
BRPI0015462A 1999-11-10 2000-11-10 método para a transmissão de dados para um sistema de difusão de áudio digital, método para recebimento de dados em um sistema de difusão de áudio digital, transmissor para transmitir dados em um sistema de radiodifusão de áudio digital, e, receptor para receber dados em um sistema de radiodifusão de áudio digital BRPI0015462B1 (pt)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US09/438,148 US6549544B1 (en) 1999-11-10 1999-11-10 Method and apparatus for transmission and reception of FM in-band on-channel digital audio broadcasting
PCT/US2000/042061 WO2001035556A2 (en) 1999-11-10 2000-11-10 Method and apparatus for transmission and reception of fm in-band on-channel digital audio broadcasting

Publications (2)

Publication Number Publication Date
BR0015462A true BR0015462A (pt) 2002-07-09
BRPI0015462B1 BRPI0015462B1 (pt) 2016-03-29

Family

ID=23739444

Family Applications (1)

Application Number Title Priority Date Filing Date
BRPI0015462A BRPI0015462B1 (pt) 1999-11-10 2000-11-10 método para a transmissão de dados para um sistema de difusão de áudio digital, método para recebimento de dados em um sistema de difusão de áudio digital, transmissor para transmitir dados em um sistema de radiodifusão de áudio digital, e, receptor para receber dados em um sistema de radiodifusão de áudio digital

Country Status (15)

Country Link
US (2) US6549544B1 (pt)
EP (1) EP1232591B1 (pt)
JP (1) JP4864263B2 (pt)
KR (1) KR100691092B1 (pt)
CN (1) CN1228934C (pt)
AR (1) AR028875A1 (pt)
AT (1) ATE303021T1 (pt)
AU (1) AU769559B2 (pt)
BR (1) BRPI0015462B1 (pt)
CA (1) CA2389470C (pt)
DE (1) DE60022220T2 (pt)
MX (1) MXPA02004550A (pt)
RU (1) RU2237369C2 (pt)
TW (1) TW502508B (pt)
WO (1) WO2001035556A2 (pt)

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Also Published As

Publication number Publication date
WO2001035556A2 (en) 2001-05-17
JP4864263B2 (ja) 2012-02-01
CA2389470A1 (en) 2001-05-17
CN1228934C (zh) 2005-11-23
TW502508B (en) 2002-09-11
CN1391743A (zh) 2003-01-15
AU2924901A (en) 2001-06-06
KR20020068341A (ko) 2002-08-27
EP1232591B1 (en) 2005-08-24
WO2001035556A3 (en) 2001-10-04
US6549544B1 (en) 2003-04-15
ATE303021T1 (de) 2005-09-15
JP2003514435A (ja) 2003-04-15
DE60022220D1 (de) 2005-09-29
KR100691092B1 (ko) 2007-03-09
US20030137928A1 (en) 2003-07-24
RU2002115296A (ru) 2004-02-20
CA2389470C (en) 2012-05-08
AU769559B2 (en) 2004-01-29
US6982948B2 (en) 2006-01-03
EP1232591A1 (en) 2002-08-21
RU2237369C2 (ru) 2004-09-27
MXPA02004550A (es) 2002-09-02
BRPI0015462B1 (pt) 2016-03-29
AR028875A1 (es) 2003-05-28
DE60022220T2 (de) 2006-06-14

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