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Proceedings Paper

Design and implementation of a channel decoder with LDPC code
Author(s): Diqing Hu; Peng Wang; Jianzong Wang; Tianquan Li
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Paper Abstract

Because Toshiba quit the competition, there is only one standard of blue-ray disc: BLU-RAY DISC, which satisfies the demands of high-density video programs. But almost all the patents are gotten by big companies such as Sony, Philips. As a result we must pay much for these patents when our productions use BD. As our own high-density optical disk storage system, Next-Generation Versatile Disc(NVD) which proposes a new data format and error correction code with independent intellectual property rights and high cost performance owns higher coding efficiency than DVD and 12GB which could meet the demands of playing the high-density video programs. In this paper, we develop Low-Density Parity-Check Codes (LDPC): a new channel encoding process and application scheme using Q-matrix based on LDPC encoding has application in NVD's channel decoder. And combined with the embedded system portable feature of SOPC system, we have completed all the decoding modules by FPGA. In the NVD experiment environment, tests are done. Though there are collisions between LDPC and Run-Length-Limited modulation codes (RLL) which are used in optical storage system frequently, the system is provided as a suitable solution. At the same time, it overcomes the defects of the instability and inextensibility, which occurred in the former decoding system of NVD--it was implemented by hardware.

Paper Details

Date Published: 20 March 2009
PDF: 5 pages
Proc. SPIE 7125, Eighth International Symposium on Optical Storage and 2008 International Workshop on Information Data Storage, 712520 (20 March 2009); doi: 10.1117/12.822646
Show Author Affiliations
Diqing Hu, Huazhong Univ. of Science and Technology (China)
Peng Wang, Huazhong Univ. of Science and Technology (China)
Jianzong Wang, Huazhong Univ. of Science and Technology (China)
Tianquan Li, Dezhou Vocational and Technical College (China)


Published in SPIE Proceedings Vol. 7125:
Eighth International Symposium on Optical Storage and 2008 International Workshop on Information Data Storage

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