Title :
Modified target and concatenated coding for d=1 constrained magnetic recording channels
Author :
Gopalaswamy, Srinivasan ; Bergmans, Jan
Author_Institution :
Quantum Corp., Milpitas, CA, USA
Abstract :
A modified E3PRML (ME3PRML) channel with concatenated coding is proposed for d=1 coded magnetic recording channels. First an analytical approach to obtain the optimized target is detailed, and compared with that obtained by search. It is observed that the channel is dominated by single bit error events. A concatenated code with interleaving in conjunction with the 2/3 (1,7) code, and a low-complexity correction method are proposed to detect and correct the dominant error events. For a code rate of 300/459 with 6-way interleaving, the proposed channel provides an improvement of 1.5 dB (including code rate loss) over conventional d=1 E3PRML channel at a bit-error rate of 1E-5, and better robustness to non-linearities than d=0 ME2PRML channel
Keywords :
channel coding; concatenated codes; digital magnetic recording; error correction codes; error detection codes; interleaved codes; partial response channels; bit-error rate; concatenated coding; dominant error events; error correction; error detection; interleaving; low-complexity correction method; magnetic recording channels; modified E3PRML channel; optimized target; single bit error events; Bit error rate; Concatenated codes; Detectors; Error correction codes; Event detection; Interleaved codes; Magnetic analysis; Magnetic recording; Paramagnetic materials; Viterbi algorithm;
Conference_Titel :
Communications, 2000. ICC 2000. 2000 IEEE International Conference on
Conference_Location :
New Orleans, LA
Print_ISBN :
0-7803-6283-7
DOI :
10.1109/ICC.2000.853070
