Abstract
A turbo equalization scheme for holographic data storage (HDS) systems is proposed. The proposed turbo equalization procedure is conducted between a one-dimensional (1D) partial response maximum likelihood (PRML) detector and the joint Viterbi decoder by exchanging a priori and extrinsic information. In the joint Viterbi decoder, the modulation and convolutional decoding is performed simultaneously by mapping a 2/4 modulation symbol onto the trellis of the convolutional code to reduce the complexity of the decoding procedure and improve the decoding capability for the iterative equalization and decoding. In addition, since the channel model is described as the two-dimensional convolution in HDS systems, the 1D PRML detector is performed in the vertical direction and the joint Viterbi decoder is performed in the horizontal direction to maximize the performance gains. The simulation result shows that the proposed turbo equalization scheme has the better bit error rate performances as the number of iterations increases.
| Original language | English |
|---|---|
| Article number | 08JB07 |
| Journal | Japanese Journal of Applied Physics |
| Volume | 51 |
| Issue number | 8 PART 3 |
| DOIs | |
| Publication status | Published - 2012 Aug 1 |
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All Science Journal Classification (ASJC) codes
- Engineering(all)
- Physics and Astronomy(all)
Cite this
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Turbo equalization scheme between partial response maximum likelihood detector and Viterbi decoder for 2/4 modulation code in holographic data storage systems. / Kong, Gyuyeol; Choi, Sooyong.
In: Japanese Journal of Applied Physics, Vol. 51, No. 8 PART 3, 08JB07, 01.08.2012.Research output: Contribution to journal › Article
TY - JOUR
T1 - Turbo equalization scheme between partial response maximum likelihood detector and Viterbi decoder for 2/4 modulation code in holographic data storage systems
AU - Kong, Gyuyeol
AU - Choi, Sooyong
PY - 2012/8/1
Y1 - 2012/8/1
N2 - A turbo equalization scheme for holographic data storage (HDS) systems is proposed. The proposed turbo equalization procedure is conducted between a one-dimensional (1D) partial response maximum likelihood (PRML) detector and the joint Viterbi decoder by exchanging a priori and extrinsic information. In the joint Viterbi decoder, the modulation and convolutional decoding is performed simultaneously by mapping a 2/4 modulation symbol onto the trellis of the convolutional code to reduce the complexity of the decoding procedure and improve the decoding capability for the iterative equalization and decoding. In addition, since the channel model is described as the two-dimensional convolution in HDS systems, the 1D PRML detector is performed in the vertical direction and the joint Viterbi decoder is performed in the horizontal direction to maximize the performance gains. The simulation result shows that the proposed turbo equalization scheme has the better bit error rate performances as the number of iterations increases.
AB - A turbo equalization scheme for holographic data storage (HDS) systems is proposed. The proposed turbo equalization procedure is conducted between a one-dimensional (1D) partial response maximum likelihood (PRML) detector and the joint Viterbi decoder by exchanging a priori and extrinsic information. In the joint Viterbi decoder, the modulation and convolutional decoding is performed simultaneously by mapping a 2/4 modulation symbol onto the trellis of the convolutional code to reduce the complexity of the decoding procedure and improve the decoding capability for the iterative equalization and decoding. In addition, since the channel model is described as the two-dimensional convolution in HDS systems, the 1D PRML detector is performed in the vertical direction and the joint Viterbi decoder is performed in the horizontal direction to maximize the performance gains. The simulation result shows that the proposed turbo equalization scheme has the better bit error rate performances as the number of iterations increases.
UR - http://www.scopus.com/inward/record.url?scp=84865214560&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=84865214560&partnerID=8YFLogxK
U2 - 10.1143/JJAP.51.08JB07
DO - 10.1143/JJAP.51.08JB07
M3 - Article
AN - SCOPUS:84865214560
VL - 51
JO - Japanese Journal of Applied Physics, Part 1: Regular Papers & Short Notes
JF - Japanese Journal of Applied Physics, Part 1: Regular Papers & Short Notes
SN - 0021-4922
IS - 8 PART 3
M1 - 08JB07
ER -