Efficient Pipeline Conflict Resolution for Layered QC-LDPC Decoders in OFDM-PON
Zhijie Wang,
Zhengjun Xu,
Kun Chen
et al.
Abstract:The high standard of communication quality in optical access networks makes forward error correction (FEC) schemes, such as LDPC, an integral part of the system. However, pipeline conflict arising from data dependencies is a common issue encountered in the hardware implementation of layered QC-LDPC decoders. This paper proposes an efficient layered decoding architecture to reduce pipeline conflicts without introducing stall cycles. It can solve some of the pipeline conflicts by flexibly reordering the processi… Show more
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