Title :
BaseLine Wander Compensation by Per-Survivor-Processing
Author :
Xie, Jin ; Kumar, Vijaya N V.K ; Hu, Xinde
Author_Institution :
Data Storage Syst. Center, Carnegie Mellon Univ., Pittsburgh, PA
Abstract :
Baseline wander (BLW) is one of major sources of bit errors in perpendicular recording. In this paper, we present a method to compensate for BLW by per-survivor processing (PSP), i.e., along each surviving path in the Viterbi algorithm (VA). We apply the PSP method in VA in timing recovery loop and SOVA for iterative decoding. Simulation results show that the cycle slip rate and bit error rate are lowered and approach ideal case where there is no BLW
Keywords :
error compensation; iterative decoding; perpendicular magnetic recording; synchronisation; Viterbi algorithm; baseline wander compensation; bit error rate; cycle slip rate; iterative decoding; per-survivor processing; perpendicular recording; timing recovery loop; Bit error rate; Costs; Delay estimation; Feedback loop; Iterative decoding; Magnetic separation; Parity check codes; Perpendicular magnetic recording; Timing; Viterbi algorithm; Baseline wander (BLW); per-survivor processing (PSP);
Journal_Title :
Magnetics, IEEE Transactions on
DOI :
10.1109/TMAG.2006.878653
