基于置信传播译码的DRA码设计
doi: 10.3724/SP.J.1146.2007.00035
Design of Double Repeat Accumulate Codes Based on Belief Propagation Decoding
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摘要: 该文通过重复器、组合器、交织器的联合优化，设计了一种没有小环的双重复累积码(DRA码)；基于EXIT图优化设计了该码的度分布。研究结果显示，这类DRA码的度分布灵活；当采用置信传播译码时，错误平层低。Abstract: A class Double Repeat Accumulate (DRA) codes is provided without small cycles by the jointly design among repeater, combiner and interleaver in this paper. Degree distribution is optimized based on EXtrinsic Information Transfer (EXIT) chart. Simulation results show that this class DRA codes has more flexible degree distributions and lower error floor when belief propagation algorithms is used.
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