BR9714249A - Transmissor, processo e sistema de transmisão para transmitir sinais codificados através de um canal. - Google Patents
Transmissor, processo e sistema de transmisão para transmitir sinais codificados através de um canal.Info
- Publication number
- BR9714249A BR9714249A BR9714249-2A BR9714249A BR9714249A BR 9714249 A BR9714249 A BR 9714249A BR 9714249 A BR9714249 A BR 9714249A BR 9714249 A BR9714249 A BR 9714249A
- Authority
- BR
- Brazil
- Prior art keywords
- code
- channel
- circuit
- information
- crc
- Prior art date
Links
Classifications
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- 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
- H04L1/0001—Systems modifying transmission characteristics according to link quality, e.g. power backoff
- H04L1/0009—Systems modifying transmission characteristics according to link quality, e.g. power backoff by adapting the channel coding
-
- 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
- H03M13/05—Error detection or forward error correction by redundancy in data representation, i.e. code words containing more digits than the source words using block codes, i.e. a predetermined number of check bits joined to a predetermined number of information bits
- H03M13/09—Error detection only, e.g. using cyclic redundancy check [CRC] codes or single parity bit
-
- 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
- H03M13/29—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 combining two or more codes or code structures, e.g. product codes, generalised product codes, concatenated codes, inner and outer codes
- H03M13/2906—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 combining two or more codes or code structures, e.g. product codes, generalised product codes, concatenated codes, inner and outer codes using block codes
-
- 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
- H03M13/353—Adaptation to the channel
-
- 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
- H04L1/0064—Concatenated codes
- H04L1/0065—Serial concatenated codes
-
- 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
-
- 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
- H03M13/6356—Error control coding in combination with rate matching by repetition or insertion of dummy data, i.e. rate reduction
-
- 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
- H04L1/0001—Systems modifying transmission characteristics according to link quality, e.g. power backoff
- H04L1/0023—Systems modifying transmission characteristics according to link quality, e.g. power backoff characterised by the signalling
- H04L1/0026—Transmission of channel quality indication
-
- 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
- H04L1/08—Arrangements for detecting or preventing errors in the information received by repeating transmission, e.g. Verdan system
Landscapes
- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Probability & Statistics with Applications (AREA)
- Theoretical Computer Science (AREA)
- Computer Networks & Wireless Communication (AREA)
- Signal Processing (AREA)
- Quality & Reliability (AREA)
- Detection And Prevention Of Errors In Transmission (AREA)
- Error Detection And Correction (AREA)
Abstract
''TRANSMISSOR PROCESSO E SISTEMA DE TRANSMISSãO PARA TRANSMITIR SINAIS CODIFICADOS ATRAVéS DE UMA CANAL''. Um transmissor (100) recebe informações para transmissão para um receptor (200) através de um canal de comunicação (101). Um circuito de código de teste de redundância cíclica (CRC) (106) codifica as informações com o código CRC para fins de detecção de erro. As informações CRC codificas são fornecidas a um comutador de código (108). O comutador de código (108) fornece as informações CRC codificadas que a um primeiro circuito de código (110) quer a um segundo circuito de código (112) para codificação de erro antecipada (FEC). O primeiro circuito de código (11) pode, por exemplo, codificar as informações utilizando um Código FEC 1, tal como codificação convolucional, e o segundo circuito de código (112) pode codificar as informações utilizando um Código FEC 2, tal como codificação de repetição. O comutador de código (108 selecionar quer o primeiro quer o segundo circuito de código (110 ou 112) baseado sobre características detectadas do canal (101). As caracterísiticas do canal (101). As características do canal podem ser obtidas de um circuito de estimação de canal (114), podem ser obtidas de um sinal de realimentação de erro I~ 3~ do receptor (200) ou podem ser obtidas de uma combinação de ambos. Após o comutador de código (108) selecionar o primeiro ou segundo circuito de código (110 ou 112), as informações são apropriadamente codificadas para produzir um sinal codificado que é transmitido através do canal (101) por um circuito de transmissão (116).
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US08/789,093 US6044485A (en) | 1997-01-03 | 1997-01-03 | Transmitter method and transmission system using adaptive coding based on channel characteristics |
PCT/US1997/022307 WO1998029979A1 (en) | 1997-01-03 | 1997-12-16 | Transmitter method and transmission system using adaptive coding based on channel characteristics |
Publications (1)
Publication Number | Publication Date |
---|---|
BR9714249A true BR9714249A (pt) | 2000-04-18 |
Family
ID=25146570
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
BR9714249-2A BR9714249A (pt) | 1997-01-03 | 1997-12-16 | Transmissor, processo e sistema de transmisão para transmitir sinais codificados através de um canal. |
Country Status (9)
Country | Link |
---|---|
US (1) | US6044485A (pt) |
EP (1) | EP0950301B1 (pt) |
JP (1) | JP3715656B2 (pt) |
CN (1) | CN1111990C (pt) |
AU (1) | AU5593898A (pt) |
BR (1) | BR9714249A (pt) |
CA (1) | CA2276777A1 (pt) |
DE (1) | DE69732652T2 (pt) |
WO (1) | WO1998029979A1 (pt) |
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1997
- 1997-01-03 US US08/789,093 patent/US6044485A/en not_active Expired - Lifetime
- 1997-12-16 CN CN97181998A patent/CN1111990C/zh not_active Expired - Fee Related
- 1997-12-16 DE DE69732652T patent/DE69732652T2/de not_active Expired - Lifetime
- 1997-12-16 EP EP97952295A patent/EP0950301B1/en not_active Expired - Lifetime
- 1997-12-16 BR BR9714249-2A patent/BR9714249A/pt unknown
- 1997-12-16 JP JP53002298A patent/JP3715656B2/ja not_active Expired - Lifetime
- 1997-12-16 WO PCT/US1997/022307 patent/WO1998029979A1/en active IP Right Grant
- 1997-12-16 AU AU55938/98A patent/AU5593898A/en not_active Abandoned
- 1997-12-16 CA CA002276777A patent/CA2276777A1/en not_active Abandoned
Also Published As
Publication number | Publication date |
---|---|
CA2276777A1 (en) | 1998-07-09 |
CN1111990C (zh) | 2003-06-18 |
DE69732652D1 (de) | 2005-04-07 |
DE69732652T2 (de) | 2005-12-29 |
WO1998029979A1 (en) | 1998-07-09 |
AU5593898A (en) | 1998-07-31 |
US6044485A (en) | 2000-03-28 |
CN1249092A (zh) | 2000-03-29 |
EP0950301B1 (en) | 2005-03-02 |
JP2001507886A (ja) | 2001-06-12 |
JP3715656B2 (ja) | 2005-11-09 |
EP0950301A1 (en) | 1999-10-20 |
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