Tape drive track following using cascade control
Angeliki Pantazi, Mark A. Lantz
IFAC 2014
For 2-D product codes used in tape storage, the mapping of error-correction-coding (ECC) blocks (EBs) into 2-D physical blocks (PBs) on magnetic tape is generalized. The 3-D product codes that have the same code rate and EB size as interleaved 2-D product codes currently used in tape storage are proposed. For 3-D product codes, a new family of mappings of EBs into 2-D PBs on magnetic tape is introduced, which fulfills the stringent burst-error-correction requirements of tape storage. The burst-error-correction capability of 2-D and 3-D product code words recorded on magnetic tape is analyzed as a function of track rotation, linear density, and ECC parameters. The performance limits of the tape-storage channel are determined based on computations of channel capacity and random coding bound. Hardware simulations of iterative hard-decision decoding of product codes implemented in a field-programmable gate array demonstrate the improved error-rate performance of 3-D product codes over 2-D product codes.
Angeliki Pantazi, Mark A. Lantz
IFAC 2014
Mark A. Lantz, Bernd Gotsmann, et al.
Advanced Functional Materials
Hazar Yueksel, Matthias Braendli, et al.
ESSCIRC 2016
Mark A. Lantz, Simeon Furrer, et al.
IEEE Transactions on Magnetics