Density Evolution Analysis of Protograph-Based Braided Block Codes on the Erasure Channel
Konferenz: SCC'10 - 8th International ITG Conference on Source and Channel Coding
18.01.2010 - 21.01.2010 in Siegen, Germany
Tagungsband: SCC'10
Seiten: 6Sprache: EnglischTyp: PDF
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Autoren:
Lentmaier, Michael; Näthen, Benedikt; Fettweis, Gerhard P. (Vodafone Chair Mobile Communications Systems, Dresden University of Technology (TU Dresden), 01062 Dresden, Germany)
Inhalt:
A threshold analysis of terminated braided block codes (BBCs) is presented for the binary erasure channel. Protograph based BBCs (PG-BBCs) are considered, which can be derived by lifting the Tanner graph of a tightly braided block code. They can be interpreted as GLDPC convolutional codes that are structured in a particular way. It is shown that the terminated PG-BBCs have better thresholds than their GLDPC block code counterparts. Simulation results are presented to confirm the computed asymptotic thresholds.