Reliability-based improvement strategies for LDPC decoders:
Gespeichert in:
| 1. Verfasser: | |
|---|---|
| Format: | Abschlussarbeit Buch |
| Sprache: | English |
| Veröffentlicht: |
Tönning [u.a.]
Der Andere Verl.
2010
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| Schlagworte: | |
| Online-Zugang: | Inhaltsverzeichnis |
| Beschreibung: | XVI, 178 S. graph. Darst. 21 cm |
| ISBN: | 9783899599800 |
Internformat
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| 245 | 1 | 0 | |a Reliability-based improvement strategies for LDPC decoders |c Michael Lunglmayr |
| 264 | 1 | |a Tönning [u.a.] |b Der Andere Verl. |c 2010 | |
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Datensatz im Suchindex
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| adam_text | CONTENTS PREFACE I ABSTRACT V KURZFASSUNG VII MATHEMATICAL NOTATION XIII
1 INTRODUCTION 1 1.1 STATE-OF-THE-ART OF LDPC DECODING 2 1.2 GOALS OF
THIS THESIS 3 1.3 STRUCTURE OF THIS THESIS 4 2 FUNDAMENTALS OF LDPC
CODED COMMUNICATIONS 7 2.1 DIGITAL COMMUNICATION SYSTEMS 7 2.2 CHANNEL
CODING USING BLOCK CODES 8 2.3 ADDITIVE WHITE GAUSSIAN NOISE CHANNEL 10
2.4 LINEAR DIGITAL MODULATION 13 2.4.1 LOG-LIKELIHOOD RATIOS 13 2.4.2
BINARY PHASE SHIFT KEYING 15 2.4.3 QUADRATURE AMPLITUDE MODULATION (QAM)
16 2.5 LOW DENSITY PARITY CHECK CODES 19 2.5.1 PARITY CHECK MATRIX 20
2.5.2 TANNER GRAPHS 20 2.5.3 DEGREE DISTRIBUTIONS AND CODE ENSEMBLES 21
2.6 ENCODING OF LDPC CODES 24 2.6.1 GENERATOR MATRIX 25 2.6.2 DUAL CODES
26 IX BIBLIOGRAFISCHE INFORMATIONEN HTTP://D-NB.INFO/1001078713
DIGITALISIERT DURCH 2.6.3 ENCODING OF AN EXAMPLE CODE 26 2.6.4 LOW
COMPLEXITY ENCODABLE LOW DENSITY PARITY CHECK (LDPC) CODES 27 2.6.5
EFFICIENT ENCODING OF UNIVERSAL LDPC CODES . . . . 31 DECODING OF LDPC
CODES 35 3.1 DECODER PRINCIPLES 35 3.1.1 SEQUENCE DECODING 36 3.1.2
SYMBOL-BY-SYMBOL DECODING 38 3.2 BELIEF PROPAGATION DECODING 39 3.2.1
BELIEF PROPAGATION DECODING ALGORITHM 40 3.2.2 DECODING PERFORMANCE FROM
GRAPH PROPERTIES ... 46 3.2.3 DENSITY EVOLUTION 48 3.2.4 GAUSSIAN
APPROXIMATION 50 3.2.5 VARIATIONS OF BP DECODING 53 3.2.5.1 SCHEDULING
OF BELIEF PROPAGATION DECODING 54 3.2.5.2 MIN-SUM ALGORITHM 56 3.3
LINEAR PROGRAMMING DECODING 57 3.3.1 LINEAR PROGRAMMING REPRESENTATIONS
57 3.3.1.1 (I)LP FORMULATION WITHOUT ADDITIONAL VARIABLES 60 3.3.1.2
(I)LP FORMULATION WITH ADDITIONAL VARIABLES 62 3.3.2 ALGORITHMIC
IMPROVEMENTS OF LP DECODING 67 3.3.3 OUTPUT QUALITY OF LINEAR
PROGRAMMING DECODING . 71 3.3.4 VARIATIONS OF LP DECODING 73 3.4 ORDERED
STATISTICS DECODING 75 3.4.1 MOST RELIABLE BASIS 75 3.4.2 VARIATIONS OF
OSD DECODING 78 VERTEX PACKING DECODING 81 4.1 VERTEX PACKING ON A GRAPH
82 4.1.1 CHARACTERISTICS OF VERTEX PACKINGS 82 4.1.2 (INTEGER) LINEAR
PROGRAMMING FORMULATION OF THE VPP 85 4.2 CONFIGURATION GRAPH 87 4.3
VERTEX PACKING DECODING ALGORITHMS 93 4.3. XI 4.3.2 PRACTICAL
RESTRICTIONS OF VP LINEAR PROGRAMMING DECODING 98 4.3.3 GREEDY
ALGORITHMS FOR VERTEX PACKING DECODING 100 4.3.4 SIMPLE VARIANTS OF
GREEDY DECODING 101 4.3.5 HARDWARE IMPLEMENTATION OF GREEDY ALGORITHMS
106 4.3.6 ADVANCED GREEDY ALGORITHMS 108 4.4 PARITY CHECK MATRIX
DEPENDENCE OF CONFIGURATION GRAPHS 112 5 CASCADED DECODERS 115 5.1
CASCADED DECODERS OVERVIEW 116 5.1.1 DECODER COMBINATIONS 117 5.1.2
CODES USED FOR SIMULATIONS 117 5.2 LINEAR PROGRAMMING AND BELIEF
PROPAGATION DECODING (LP/BP) 120 5.2.1 OPTIMIZATION OF SCALING VALUES
121 5.2.2 SIMULATION RESULTS LP/BP 125 5.3 BELIEF PROPAGATION AND
ORDERED STATISTICS DECODING (BP/OSD) 129 5.4 BELIEF PROPAGATION AND
VERTEX PACKING DECODING (BP/VPD) 132 5.5 LINEAR PROGRAMMING AND ORDERED
STATISTICS DECODING (LP/OSD) 135 5.6 LINEAR PROGRAMMING AND VERTEX
PACKING DECODING (LP/VPD) 140 5.7 PERFORMANCE AND COMPLEXITY 142 6 LDPC
CODING IN RB-HARQ SYSTEMS 151 6.1 HYBRID AUTOMATIC REPEAT REQUEST 151
6.2 OVERVIEW ON HARQ METHODS FOR LDPC CODES 152 6.3 RELIABILITY BASED
HYBRID ARQ 155 6.4 IDENTIFICATION OF BITS FOR RETRANSMISSION 155 7
OUTLOOK AND CONCLUSION 163 7.1 OUTLOOK 163 7.2 CONCLUSION 164
ABBREVIATIONS 167
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| dewey-full | 005.72 621.3822 |
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| discipline | Informatik Elektrotechnik / Elektronik / Nachrichtentechnik |
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| physical | XVI, 178 S. graph. Darst. 21 cm |
| publishDate | 2010 |
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| spelling | Lunglmayr, Michael Verfasser (DE-588)141107901 aut Reliability-based improvement strategies for LDPC decoders Michael Lunglmayr Tönning [u.a.] Der Andere Verl. 2010 XVI, 178 S. graph. Darst. 21 cm txt rdacontent n rdamedia nc rdacarrier Zugl.: Erlangen-Nürnberg, Univ., Diss., 2009 Low-Density-Parity-Check-Code (DE-588)7614708-3 gnd rswk-swf Decodierung (DE-588)4148976-7 gnd rswk-swf (DE-588)4113937-9 Hochschulschrift gnd-content Low-Density-Parity-Check-Code (DE-588)7614708-3 s Decodierung (DE-588)4148976-7 s DE-604 DNB Datenaustausch application/pdf http://bvbr.bib-bvb.de:8991/F?func=service&doc_library=BVB01&local_base=BVB01&doc_number=020218470&sequence=000001&line_number=0001&func_code=DB_RECORDS&service_type=MEDIA Inhaltsverzeichnis |
| spellingShingle | Lunglmayr, Michael Reliability-based improvement strategies for LDPC decoders Low-Density-Parity-Check-Code (DE-588)7614708-3 gnd Decodierung (DE-588)4148976-7 gnd |
| subject_GND | (DE-588)7614708-3 (DE-588)4148976-7 (DE-588)4113937-9 |
| title | Reliability-based improvement strategies for LDPC decoders |
| title_auth | Reliability-based improvement strategies for LDPC decoders |
| title_exact_search | Reliability-based improvement strategies for LDPC decoders |
| title_full | Reliability-based improvement strategies for LDPC decoders Michael Lunglmayr |
| title_fullStr | Reliability-based improvement strategies for LDPC decoders Michael Lunglmayr |
| title_full_unstemmed | Reliability-based improvement strategies for LDPC decoders Michael Lunglmayr |
| title_short | Reliability-based improvement strategies for LDPC decoders |
| title_sort | reliability based improvement strategies for ldpc decoders |
| topic | Low-Density-Parity-Check-Code (DE-588)7614708-3 gnd Decodierung (DE-588)4148976-7 gnd |
| topic_facet | Low-Density-Parity-Check-Code Decodierung Hochschulschrift |
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