Design and implementation of a channel decoder with LDPC code

Diqing Hu; Peng Wang; Jianzong Wang; Tianquan Li

doi:10.1117/12.822646

19 March 2009 Design and implementation of a channel decoder with LDPC code

Diqing Hu, Peng Wang, Jianzong Wang, Tianquan Li

Proceedings Volume 7125, Eighth International Symposium on Optical Storage and 2008 International Workshop on Information Data Storage; 712520 (2009) https://doi.org/10.1117/12.822646
Event: Eighth International Symposium on Optical Storage and 2008 International Workshop on Information Data Storage, 2008, Wuhan, China

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.

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Diqing Hu, Peng Wang, Jianzong Wang, and Tianquan Li "Design and implementation of a channel decoder with LDPC code", Proc. SPIE 7125, Eighth International Symposium on Optical Storage and 2008 International Workshop on Information Data Storage, 712520 (19 March 2009); https://doi.org/10.1117/12.822646

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KEYWORDS

Control systems

Computer programming

Data storage

Modulation

Optical discs

Optical storage

Patents

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