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Low density parity check codes for magnetic recording channels

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3 Author(s)
Hongzin Song ; Sch. of Electr. & Comput. Eng., Oklahoma Univ., Norman, OK, USA ; R. M. Todd ; J. R. Cruz

We propose a system for magnetic recording, using a low density parity check (LDPC) code as the error-correcting-code, in conjunction with a rate 16/17 quasi-maximum-transition-run channel code and a modified E2PR4-equalized channel. Iterative decoding between the partial response channel and the LDPC code is performed. Simulations show that this system can achieve a 5.9 dB gain over uncoded EPR4. The algorithms used to design this LDPC code are also discussed

Published in:

IEEE Transactions on Magnetics  (Volume:36 ,  Issue: 5 )