access icon free Iterative detection supported by extrinsic information for holographic data storage systems

A new model in which an iterative detection is supported by extrinsic information from equalisers is proposed. Furthermore, the system performance involving extrinsic information from an opposite direction one-dimensional soft output Viterbi algorithm is examined. The work is applied to holographic data storage (HDS) systems. The HDS systems are well known as a future storage system because of their extremely large storage capacity and high data transfer rates. However, the system faces two-dimensional interference challenges. The results show that the proposed model vastly improves the performance of the HDS system under severe interference.

Inspec keywords: equalisers; iterative methods; holographic storage; maximum likelihood estimation

Other keywords: storage capacity; HDS system; equaliser; iterative detection; extrinsic information; two-dimensional interference; data transfer rate; holographic data storage system; one-dimensional soft output Viterbi algorithm

Subjects: Probability theory, stochastic processes, and statistics; Applications of holography; Interpolation and function approximation (numerical analysis); Optical storage; Holography; Interpolation and function approximation (numerical analysis); Optical storage and retrieval; Numerical approximation and analysis; Optical storage and retrieval; Other topics in statistics; Other topics in statistics

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      • 3. Kim, J., Moon, Y., Lee, J.: ‘Iterative decoding between two-dimensional soft output Viterbi algorithm and error correcting modulation code for holographic data storage’, Jpn. J. Appl. Phys., 2011, 50, (9), pp. 09MB02-109MB02-3, doi: 10.1143/JJAP.50.09MB02.
http://iet.metastore.ingenta.com/content/journals/10.1049/el.2015.2308
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