BR9909124A - Processo de radiodifusão, transmissor de radiofrequência, e, receptor de radiofrequência - Google Patents

Processo de radiodifusão, transmissor de radiofrequência, e, receptor de radiofrequência

Info

Publication number
BR9909124A
BR9909124A BR9909124-0A BR9909124A BR9909124A BR 9909124 A BR9909124 A BR 9909124A BR 9909124 A BR9909124 A BR 9909124A BR 9909124 A BR9909124 A BR 9909124A
Authority
BR
Brazil
Prior art keywords
group
radio frequency
carriers
radio
carrier signals
Prior art date
Application number
BR9909124-0A
Other languages
English (en)
Inventor
Brian W Kroeger
Roy R Stehlik
Denise M Cammarata
Original Assignee
Usa Digital Radio Inc
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 Usa Digital Radio Inc filed Critical Usa Digital Radio Inc
Publication of BR9909124A publication Critical patent/BR9909124A/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
    • H03—ELECTRONIC CIRCUITRY
    • H03M—CODING; DECODING; CODE CONVERSION IN GENERAL
    • H03M13/00—Coding, decoding or code conversion, for error detection or error correction; Coding theory basic assumptions; Coding bounds; Error probability evaluation methods; Channel models; Simulation or testing of codes
    • H03M13/03—Error detection or forward error correction by redundancy in data representation, i.e. code words containing more digits than the source words
    • H03M13/23—Error detection or forward error correction by redundancy in data representation, i.e. code words containing more digits than the source words using convolutional codes, e.g. unit memory codes
    • H03M13/235—Encoding of convolutional codes, e.g. methods or arrangements for parallel or block-wise encoding
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03M—CODING; DECODING; CODE CONVERSION IN GENERAL
    • H03M13/00—Coding, decoding or code conversion, for error detection or error correction; Coding theory basic assumptions; Coding bounds; Error probability evaluation methods; Channel models; Simulation or testing of codes
    • H03M13/25—Error detection or forward error correction by signal space coding, i.e. adding redundancy in the signal constellation, e.g. Trellis Coded Modulation [TCM]
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03M—CODING; DECODING; CODE CONVERSION IN GENERAL
    • H03M13/00—Coding, decoding or code conversion, for error detection or error correction; Coding theory basic assumptions; Coding bounds; Error probability evaluation methods; Channel models; Simulation or testing of codes
    • H03M13/35—Unequal or adaptive error protection, e.g. by providing a different level of protection according to significance of source information or by adapting the coding according to the change of transmission channel characteristics
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03M—CODING; DECODING; CODE CONVERSION IN GENERAL
    • H03M13/00—Coding, decoding or code conversion, for error detection or error correction; Coding theory basic assumptions; Coding bounds; Error probability evaluation methods; Channel models; Simulation or testing of codes
    • H03M13/63—Joint error correction and other techniques
    • H03M13/635—Error control coding in combination with rate matching
    • H03M13/6362—Error control coding in combination with rate matching by puncturing
    • H03M13/6368—Error control coding in combination with rate matching by puncturing using rate compatible puncturing or complementary puncturing
    • H03M13/6375—Rate compatible punctured convolutional [RCPC] codes
    • 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
    • H04L1/0056—Systems characterized by the type of code used
    • H04L1/0059—Convolutional codes
    • 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
    • H04L1/0056—Systems characterized by the type of code used
    • H04L1/0071—Use of interleaving
    • 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
    • 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
    • H04L5/0044—Allocation of payload; Allocation of data channels, e.g. PDSCH or PUSCH
    • H04L5/0046—Determination of the number of bits transmitted on different sub-channels
    • 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
    • H04L5/0058—Allocation criteria
    • 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
    • H04L2001/0098—Unequal error protection
    • 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
    • H04L5/0001—Arrangements for dividing the transmission path
    • H04L5/0003—Two-dimensional division
    • H04L5/0005—Time-frequency
    • H04L5/0007—Time-frequency the frequencies being orthogonal, e.g. OFDM(A) or DMT

Landscapes

  • Engineering & Computer Science (AREA)
  • Signal Processing (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Probability & Statistics with Applications (AREA)
  • Theoretical Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Detection And Prevention Of Errors In Transmission (AREA)
  • Error Detection And Correction (AREA)
  • Transmitters (AREA)
  • Circuits Of Receivers In General (AREA)
  • Toys (AREA)
  • Microcomputers (AREA)
  • Noise Elimination (AREA)
  • Radio Transmission System (AREA)
  • Transmission Systems Not Characterized By The Medium Used For Transmission (AREA)

Abstract

"PROCESSO DE RADIODIFUSãO, TRANSMISSOR DE RADIOFREQuêNCIA, E, RECEPTOR DE RADIOFREQuêNCIA" Um processo de radiodifusão codifica material de programa empregando códigos convolucionais tendo bits não-perfuráveis e bits perfuráveis e modula sinais de portadora multiplexados por divisão de freq³ência ortogonal com os códigos convolucionais. Os bits não-perfuráveis são transportados por um primeiro grupo de portadoras e os bits perfuráveis são transportados por um segundo grupo de portadoras, em que o primeiro grupo de sinais de portadora é menos susceptível a interferência do que o segundo grupo de sinais de portadora. Os sinais de portadora são então radiodifundidos para receptores que determinam se as portadoras do segundo grupo foram corrompidas e apagam os bits perfuráveis transportados por qualquer uma das portadoras que foram determinadas estarem corrompidas. Isto produz códigos perfurados, que são subseq³entemente decodificados para recuperar o material de programa.
BR9909124-0A 1998-03-27 1999-02-24 Processo de radiodifusão, transmissor de radiofrequência, e, receptor de radiofrequência BR9909124A (pt)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US09/049,140 US6108810A (en) 1998-03-27 1998-03-27 Digital audio broadcasting method using puncturable convolutional code
PCT/US1999/004329 WO1999050981A1 (en) 1998-03-27 1999-02-24 Digital audio broadcasting method using puncturable convolutional code

Publications (1)

Publication Number Publication Date
BR9909124A true BR9909124A (pt) 2000-12-19

Family

ID=21958249

Family Applications (1)

Application Number Title Priority Date Filing Date
BR9909124-0A BR9909124A (pt) 1998-03-27 1999-02-24 Processo de radiodifusão, transmissor de radiofrequência, e, receptor de radiofrequência

Country Status (13)

Country Link
US (2) US6108810A (pt)
EP (1) EP1064741B1 (pt)
JP (1) JP4176960B2 (pt)
KR (1) KR100550709B1 (pt)
CN (1) CN1139207C (pt)
AT (1) ATE256357T1 (pt)
AU (1) AU755177B2 (pt)
BR (1) BR9909124A (pt)
CA (1) CA2326531A1 (pt)
DE (1) DE69913506T2 (pt)
ID (1) ID26630A (pt)
RU (1) RU2214059C2 (pt)
WO (1) WO1999050981A1 (pt)

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Also Published As

Publication number Publication date
CN1139207C (zh) 2004-02-18
KR20010042188A (ko) 2001-05-25
DE69913506T2 (de) 2004-09-23
AU755177B2 (en) 2002-12-05
CN1298584A (zh) 2001-06-06
EP1064741B1 (en) 2003-12-10
CA2326531A1 (en) 1999-10-07
JP4176960B2 (ja) 2008-11-05
EP1064741A1 (en) 2001-01-03
JP2002510898A (ja) 2002-04-09
ID26630A (id) 2001-01-25
AU3312999A (en) 1999-10-18
ATE256357T1 (de) 2003-12-15
DE69913506D1 (de) 2004-01-22
US6345377B1 (en) 2002-02-05
KR100550709B1 (ko) 2006-02-08
RU2214059C2 (ru) 2003-10-10
US6108810A (en) 2000-08-22
WO1999050981A1 (en) 1999-10-07

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