A New 9-Level Run-Length-Limited (1, 3) Code for Multilevel Optical Recording Channels

摘要

In this paper, we propose the M = 9 run-length-limited (d, k) = (1, 3) code for multilevel recording channels. The code rate is 5/3 (bits/symbol), and the code has a simple 3-state encoder and a sliding block decoder. During the decoding process, the maximum error propagation of input data is seven bits. The structures of the encoder and decoder of the proposed code are very simple, so it may be easily implemented for high-density multilevel recording systems.