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A Two-Stage Decoding Based on Iterative Bounded Distance Approach
The paper considers approaches to multistage decoding of linear codes. Cascade and iterative decoding techniques are well-known directions in coding theory. The idea of creating long codes from a combination of numerous short codes was presented in the 1950s. The paper proposes hybrid decoding algorithm that presents an approach to combine different decoding algorithms to use the same code redundancy. The proposed scheme combines the bounded distance decoding with an iterative decoding in two-stage manner. The main attention is paid to the analysis of the possibility of using such a decoder for decoding a BCH code in an AWGN channel. The expediency of using the second set of decoders is assessed. The analysis of influence of cycles on error probability is investigated.