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High-Throughput Non-Binary LDPC Decoder Architecture Using Parallel EMS Algorith
提出并行EMS算法,实现高吞吐量非二进制LDPC解码器。
22nm FinFET, 950 MHz, 7 Gb/s
非二进制LDPC并行EMS算法高吞吐量解码器错误校正
▸创新点1:引入并行EMS算法(方法创新)。通过同时处理多个消息条目,显著降低了每次迭代的处理延迟,提升了整体解码速度,实现了3.2倍的吞吐量提升。
▸创新点2:优化内部排序器(电路创新)。通过精心设计排序器结构并考虑输入属性,最小化延迟开销,确保并行处理不会导致性能下降。
▸创新点3:调整数据访问顺序(系统创新)。精确调整数据访问序列,减少等待周期,进一步提升整体处理效率,支持950 MHz的高频操作。
▸创新点4:采用22-nm FinFET工艺实现(电路创新)。利用先进工艺技术,支持高频操作,实现7 Gb/s的解码吞吐量,显著优于现有设计。
Abstract
Providing superior algorithm-level performance, the
non-binary low-density parity-check (NB-LDPC) code is now
expected to be one of the next-generation error-correction codes.
However, it is hard to implement a high-throughput NB-LDPC
decoder in practice due to its impractical processing complexity
and the excessively long decoding time. Based on the previous
extended min-sum (EMS) approach, in this work, we intro-
duce the parallel EMS (pEMS) decoding algorithm that reduces
the processing laten