Density Evolution Analysis of Protograph-Based Braided Block Codes on the Erasure Channel

Conference: SCC'10 - 8th International ITG Conference on Source and Channel Coding
01/18/2010 - 01/21/2010 at Siegen, Germany

Proceedings: SCC'10

Pages: 6Language: englishTyp: PDF

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Lentmaier, Michael; Näthen, Benedikt; Fettweis, Gerhard P. (Vodafone Chair Mobile Communications Systems, Dresden University of Technology (TU Dresden), 01062 Dresden, Germany)

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.