Reliability analysis of memory centric LDPC decoders under probabilistic storage failures
Alexandru Amaricăi, Sergiu Nimară, Oana Boncalo, Emanuel Mihai Popovici · 2016
In this paper, we perform a simulated fault injection reliability assessment of memory centric flooded LDPC decoders affected by probabilistic storage errors. We investigate the error correction capability in terms of Frame Error Rate (FER) of faulty flooded Min-Sum decoder, under Binary Additive White Gaussian Noise (BiAWGN) channel model. We have injected all the memories, as well as only the memories associated to each type of message. The analysis indicates that the LDPC decoders are capable to correct errors affecting the memory blocks within the decoder. Furthermore, a graceful degradation of the error correction capability of the decoder can be observed with the increase in the error probabilities can be observed. The results show that, although the error rate is 3× smaller in the input LLR memory, they have the strongest impact in the overal reliability of the decoder.