Laser & Optoelectronics Progress, Volume. 50, Issue 11, 112101(2013)
Characteristics of Variable Multilevel Run-Length-Limited Code
We present a new variable multilevel run-length-limited modulation coding scheme. By using this coding scheme, better coding efficiency is obtained while the read out channel servo control and the channel signal-to-noise ratio (SNR) are met. Different phase restrictions can be set according to the SNR margin when the different run length is phased: short-run is phased less and long run is phased more. It can use the run-length redundancy to the extreme extent while reducing the inter-code interference of multi level run. Through theoretical analysis and experimental testing, the characteristics of this coding scheme are analyzed, and the performance of this scheme applied to DVD disc is also given through the test. The experimental result shows that the readout signal of the coding scheme has good symmetry with the raw byte error rate less than 1×10-5, and the coding scheme meets the requirements of the readout channel and servo control of DVD system.
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Zhang Long, Ni Guoqiang, Pei Jing. Characteristics of Variable Multilevel Run-Length-Limited Code[J]. Laser & Optoelectronics Progress, 2013, 50(11): 112101
Category: OPTICAL DATA STORAGE
Received: Jul. 26, 2013
Accepted: --
Published Online: Oct. 20, 2013
The Author Email: Long Zhang (lzhang27@163.com)