Timing-drift channel model and marker-based error correction coding

Several types of insertion/deletion/substitution error correction codings have been proposed for channels with imperfect synchronization. Most of the conventional coding schemes assume insertion/deletion errors of bit granularity, while in some applications, e.g. bit patterned media recording, insertion/deletion errors occur as a result of accumulation of small synchronization errors. This paper considers a timing-drift channel model in which a fraction of bit (i.e., 1 /ν-bit) is inserted and deleted, and describes application of conventional marker-based IDS error correction coding to the channel. Also simulation results show bit error rates of the marker-based coding.