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1. WO2000041315 - METHOD FOR TRANSMITTING SOURCE ENCODED DIGITAL SIGNALS

Publication Number WO/2000/041315
Publication Date 13.07.2000
International Application No. PCT/EP1999/010459
International Filing Date 29.12.1999
Chapter 2 Demand Filed 12.07.2000
IPC
G06F 11/10 2006.01
GPHYSICS
06COMPUTING; CALCULATING OR COUNTING
FELECTRIC DIGITAL DATA PROCESSING
11Error detection; Error correction; Monitoring
07Responding to the occurrence of a fault, e.g. fault tolerance
08Error detection or correction by redundancy in data representation, e.g. by using checking codes
10Adding special bits or symbols to the coded information, e.g. parity check, casting out nines or elevens
H03M 7/30 2006.01
HELECTRICITY
03BASIC ELECTRONIC CIRCUITRY
MCODING, DECODING OR CODE CONVERSION, IN GENERAL
7Conversion of a code where information is represented by a given sequence or number of digits to a code where the same information is represented by a different sequence or number of digits
30Compression; Expansion; Suppression of unnecessary data, e.g. redundancy reduction
H03M 7/40 2006.01
HELECTRICITY
03BASIC ELECTRONIC CIRCUITRY
MCODING, DECODING OR CODE CONVERSION, IN GENERAL
7Conversion of a code where information is represented by a given sequence or number of digits to a code where the same information is represented by a different sequence or number of digits
30Compression; Expansion; Suppression of unnecessary data, e.g. redundancy reduction
40Conversion to or from variable length codes, e.g. Shannon-Fano code, Huffman code, Morse code
H03M 13/00 2006.01
HELECTRICITY
03BASIC ELECTRONIC CIRCUITRY
MCODING, DECODING OR CODE CONVERSION, IN GENERAL
13Coding, 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
H03M 13/35 2006.01
HELECTRICITY
03BASIC ELECTRONIC CIRCUITRY
MCODING, DECODING OR CODE CONVERSION, IN GENERAL
13Coding, 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
35Unequal 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
H04B 14/04 2006.01
HELECTRICITY
04ELECTRIC COMMUNICATION TECHNIQUE
BTRANSMISSION
14Transmission systems not characterised by the medium used for transmission
02characterised by the use of pulse modulation
04using pulse code modulation
CPC
H03M 13/23
HELECTRICITY
03BASIC ELECTRONIC CIRCUITRY
MCODING; DECODING; CODE CONVERSION IN GENERAL
13Coding, 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
03Error detection or forward error correction by redundancy in data representation, i.e. code words containing more digits than the source words
23using convolutional codes, e.g. unit memory codes
H03M 13/356
HELECTRICITY
03BASIC ELECTRONIC CIRCUITRY
MCODING; DECODING; CODE CONVERSION IN GENERAL
13Coding, 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
35Unequal 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
356Unequal error protection [UEP]
H03M 13/3746
HELECTRICITY
03BASIC ELECTRONIC CIRCUITRY
MCODING; DECODING; CODE CONVERSION IN GENERAL
13Coding, 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
37Decoding methods or techniques, not specific to the particular type of coding provided for in groups H03M13/03 - H03M13/35
3746with iterative decoding
H03M 13/3977
HELECTRICITY
03BASIC ELECTRONIC CIRCUITRY
MCODING; DECODING; CODE CONVERSION IN GENERAL
13Coding, 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
37Decoding methods or techniques, not specific to the particular type of coding provided for in groups H03M13/03 - H03M13/35
39Sequence estimation, i.e. using statistical methods for the reconstruction of the original codes
3977using sequential decoding, e.g. the Fano or stack algorithms
H03M 13/6312
HELECTRICITY
03BASIC ELECTRONIC CIRCUITRY
MCODING; DECODING; CODE CONVERSION IN GENERAL
13Coding, 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
63Joint error correction and other techniques
6312Error control coding in combination with data compression
H03M 13/6375
HELECTRICITY
03BASIC ELECTRONIC CIRCUITRY
MCODING; DECODING; CODE CONVERSION IN GENERAL
13Coding, 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
63Joint error correction and other techniques
635Error control coding in combination with rate matching
6362by puncturing
6368using rate compatible puncturing or complementary puncturing
6375Rate compatible punctured convolutional [RCPC] codes
Applicants
  • TELEFONAKTIEBOLAGET LM ERICSSON (PUBL) [SE/SE]; S-126 25 Stockholm, SE (AllExceptUS)
  • HAGENAUER, Joachim [DE/DE]; DE (UsOnly)
  • STOCKHAMMER, Thomas [DE/DE]; DE (UsOnly)
  • WEISS, Christian [DE/DE]; DE (UsOnly)
  • DENK, Wolfgang [DE/DE]; DE (UsOnly)
Inventors
  • HAGENAUER, Joachim; DE
  • STOCKHAMMER, Thomas; DE
  • WEISS, Christian; DE
  • DENK, Wolfgang; DE
Agents
  • SCHMALZ, Günther; Ericsson Eurolab Deutschland GmbH Nordostpark 12 90411 Nürnberg, DE
Priority Data
198 60 531.530.12.1998DE
Publication Language German (DE)
Filing Language German (DE)
Designated States
Title
(DE) VERFAHREN ZUR ÜBERTRAGUNG QUELLENCODIERTER DIGITALER SIGNALE
(EN) METHOD FOR TRANSMITTING SOURCE ENCODED DIGITAL SIGNALS
(FR) PROCEDE DE TRANSMISSION DE SIGNAUX NUMERIQUES CODES A LA SOURCE
Abstract
(DE)
Die Erfindung betrifft ein Verfahren zur Codierung, Übertragung und Decodierung digitaler Multimediadaten, denen zur Erzielung eines Schutzes gegenüber durch den jeweiligen Kanal erzeugten Fehlern bitweise, symbolweise oder in Gruppen eine verschiedene Wichtigkeit für die Qualität des decodierten Signals zugeordnet werden kann, wobei Fehlerfreiheit der decodierten Informationsteileinheit, granulare Abstufung, also eine Verbesserung durch eine grössere Informationsteileinheit, Kanäle mit zeitlich/örtlicher Varianz vorliegen und eine neue Schnittstelle angegeben ist, die nicht auf Minimierung der Bit- bzw. Paketfehlerwahrscheinlichkeit oder Paketverlaufwahrscheinlichkeit ausgelegt ist, sondern auf eine Maximierung der Rahmentiefe, bis zu der fehlerfrei decodiert wird. Einsatzgebiete des Verfahrens nach der Erfindung sind die Übertragung oder Speicherung von digital codierten Signalen auf fehlerbehafteten Kanälen.
(EN)
The invention relates to a method for coding, transmitting and decoding digital multimedia data. The aim of the invention is to protect said data in relation to the errors that are created by the respective channel. Different importance values which pertain to the quality of the decoded signal can be allocated to said data in bits, symbols or groups whereby flawless decoded information subunits, granular graduation, i.e. improvement by a greater information subunit and channels with temporal/local variance are provided and a new interface is given which is not designed for minimising the bit or packet error probability or packet loss probability but for maximising the frame depth to which flawless decoding is possible. The inventive method is used for transmitting or storing digitally coded signals on erroneous channels.
(FR)
L'invention concerne un procédé pour coder, transmettre et décoder des données multimédia numériques auxquelles une importance différente pour la qualité du signal décodé peut être affectée, bit par bit, symbole par symbole ou de façon groupée, afin d'obtenir une protection vis-à-vis d'erreurs produites par le canal respectif. L'invention est caractérisée par l'absence d'erreur de l'unité partielle d'information décodée, par un échelonnement granulaire, c'est-à-dire par une amélioration obtenue au moyen d'une unité partielle d'information plus grande, par des canaux à variance temporelle/spatiale, et par une nouvelle interface qui n'est pas conçue pour minimiser la probabilité d'erreurs sur les bits ou sur les paquets ou la probabilité de perte de paquets, mais pour maximiser la profondeur de trame jusqu'à obtention d'un décodage exempt d'erreur. Ce procédé dispositif peut être mis en oeuvre pour la transmission et la mémorisation de signaux codés numériquement sur des canaux en dérangement.
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