Title :
Baseline Wander Compensation by Per-Survivor-Processing
Author :
Xie, J. ; Kumar, B. ; Hu, X.
Author_Institution :
CMU, Pittsburgh
Abstract :
In this paper, we investigate the compensation of the BLW by a per-survivor processing (PSP) approach that works in each surviving VA path. Since we do not wait for VA decisions, we avoid delay or VA decision errors as in the DC loop approach. Also the PSP method does not assume DC-free codes nor does it use a differentiator. However, the PSP method needs the HPF model to be accurate and the time constant of the HPF known.
Keywords :
Viterbi decoding; error compensation; perpendicular magnetic recording; DC loop; DC-free codes; Viterbi algorithm decision errors; Viterbi algorithm path; baseline wander compensation; per-survivor-processing; perpendicular magnetic recording; Bit error rate; Costs; Delay estimation; Filters; Frequency; Iterative decoding; Parity check codes; Perpendicular magnetic recording; Timing; Viterbi algorithm;
Conference_Titel :
Magnetics Conference, 2006. INTERMAG 2006. IEEE International
Conference_Location :
San Diego, CA
Print_ISBN :
1-4244-1479-2
DOI :
10.1109/INTMAG.2006.376518
