A Low Complexity Windowed Decoding Based on Extended Min-Sum Algorithm for Non-Binary Spatially-Coupled LDPC Codes

A windowed decoding scheme based on the Extended Min-Sum algorithm (EMS-WD) is proposed in this paper, which can reduce the complexity of the window decoder by more than 30%. Furthermore, we propose an improved EMS-WD scheme (iEMS-WD), simulation result shows that 0.3 dB performance gain is obtained without the complexity cost.