© The Institution of Engineering and Technology
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.
References
-
-
1)
-
4. Koetter, R., Singer, A.C., Tuchler, M.: ‘Turbo equalization’, IEEE Signal Process. Mag., 2004, 21, (1), pp. 67–80 (doi: 10.1109/MSP.2004.1267050).
-
2)
-
5. Vadde, V., Kumar, B.V.K.V.: ‘Channel modeling and estimation for intrapage equalization in pixel-matched volume holographic data storage system’, Appl. Opt., 1999, 38, (20), pp. 4374–4386 (doi: 10.1364/AO.38.004374).
-
3)
-
1. Helberg, A.S.J., Ferreira, H.C.: ‘Some new runlength constrained binary modulation codes with error-correcting capabilities’, Electron. Lett., 1992, 28, (2), pp. 137–139 (doi: 10.1049/el:19920085).
-
4)
-
2. Benedetto, S., Montorsi, G.: ‘Serial concatenation of block and convolutional codes’, Electron. Lett., 1996, 32, (10), pp. 887–888 (doi: 10.1049/el:19960621).
-
5)
-
6. Koo, K., Kim, S.-Y., Jeong, J., et al: ‘Two-dimensional soft output Viterbi algorithm with a variable reliability factor for holographic data storage’, Jpn. J. Appl. Phys., 2013, 52, (9S2), pp. 09LE03-1–09LE03-5 (doi: 10.7567/JJAP.52.09LE03).
-
6)
-
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. 09MB02-1–09MB02-3, .
http://iet.metastore.ingenta.com/content/journals/10.1049/el.2015.2308
Related content
content/journals/10.1049/el.2015.2308
pub_keyword,iet_inspecKeyword,pub_concept
6
6