Exploiting LDPC coding to improve data reliability for phase modulated holographic storage

2021 ◽  
Author(s):  
Qin Yu ◽  
Meng Zhang ◽  
Yahui Zhao ◽  
Fei Wu ◽  
Changsheng Xie
Keyword(s):  
Data Reliability ◽  
Holographic Storage

scholarly journals Artificial Neural Network Assisted Error Correction for MLC NAND Flash Memory

Micromachines ◽  
2021 ◽  
Vol 12 (8) ◽  
pp. 879
Author(s):  
Ruiquan He ◽  
Haihua Hu ◽  
Chunru Xiong ◽  
Guojun Han
Keyword(s):  
Neural Network ◽  
Error Correction ◽  
Error Detection ◽  
Flash Memory ◽  
Nand Flash ◽  
Data Reliability ◽  
Nand Flash Memory ◽  
Process Technology ◽  
Noise Mitigation ◽  
Memory Channel

The multilevel per cell technology and continued scaling down process technology significantly improves the storage density of NAND flash memory but also brings about a challenge in that data reliability degrades due to the serious noise. To ensure the data reliability, many noise mitigation technologies have been proposed. However, they only mitigate one of the noises of the NAND flash memory channel. In this paper, we consider all the main noises and present a novel neural network-assisted error correction (ANNAEC) scheme to increase the reliability of multi-level cell (MLC) NAND flash memory. To avoid using retention time as an input parameter of the neural network, we propose a relative log-likelihood ratio (LLR) to estimate the actual LLR. Then, we transform the bit detection into a clustering problem and propose to employ a neural network to learn the error characteristics of the NAND flash memory channel. Therefore, the trained neural network has optimized performances of bit error detection. Simulation results show that our proposed scheme can significantly improve the performance of the bit error detection and increase the endurance of NAND flash memory.

scholarly journals How Do Astronomers Share Data? Reliability and Persistence of Datasets Linked in AAS Publications and a Qualitative Study of Data Practices among US Astronomers

PLoS ONE ◽  
2014 ◽  
Vol 9 (8) ◽  
pp. e104798 ◽  
Author(s):  
Alberto Pepe ◽  
Alyssa Goodman ◽  
August Muench ◽  
Merce Crosas ◽  
Christopher Erdmann
Keyword(s):  
Qualitative Study ◽  
Data Reliability ◽  
Data Practices ◽  
Share Data
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