|A Novel Design of Spatially Coupled LDPC Codes for Sliding Window Decoding
|Min Zhu, Xidian University, China; David G. M. Mitchell, New Mexico State University, United States; Michael Lentmaier, Lund University, Sweden; Daniel J. Costello, University of Notre Dame, United States
|C.8: Spatially Coupled Codes
|Coding for Communications
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|We introduce a novel design of spatially coupled low density parity check codes in order to reduce the effects of error propagation in low-latency sliding window decoding for large frame lengths or streaming applications. Speciﬁcally, we employ reduced-degree check nodes spaced throughout the coupling chain, which have the effect of allowing the decoder to recover from error bursts. A simpliﬁed analysis of the block error rate (BLER) of the proposed codes is presented that allows us to predict the effect of different placements of reduced-degree checks in the coupling chain. Simulation results supporting the beneﬁcial effect of the new code design on the overall BLER performance are included.