Title :
Modulation Code and PRML Detection for Multi-Level Run-Length-Limited DVD Channels
Author :
Hu, Hua ; Xu, Duanyi ; Longfa Fan
Author_Institution :
Dept. of Precision Instrum. & Mech., Tsinghua Univ., Beijing
Abstract :
Multi-level run-length-limited (ML-RLL) modulation on optical storage channels is a promising method to increase the recording density effectively. In this paper, some experimental results of 4-level RLL modulation on digital versatile disc (DVD) read-only discs are firstly presented. A new DC-free 4-ary RLL (2.8) code with code rate of 8/10 (bits/symbol) is designed, and partial-response maximum-likelihood (PRML) detection is used to evaluate the bit error rate (BER) performance of multi-level readout signals. Experimental and simulation results show the feasibility of 4-level RLL modulation on DVD channels
Keywords :
digital versatile discs; error statistics; maximum likelihood detection; optical modulation; read-only storage; runlength codes; 4-level RLL modulation; PRML; bit error rate; digital versatile disc; modulation code; multilevel run-length-limited DVD channels; optical storage channels; partial-response maximum-likelihood; read-only discs; recording density; Amplitude modulation; Bit error rate; CD recording; DVD; Digital modulation; Disk recording; Instruments; Modulation coding; Optical modulation; Optical recording;
Conference_Titel :
Optical Data Storage Topical Meeting, 2006
Conference_Location :
Montreal, Que.
Print_ISBN :
0-7803-9494-1
DOI :
10.1109/ODS.2006.1632736
