Title :
A window-margin-like procedure for evaluating PRML channel performance
Author :
Perkins, T. ; Keirn, Z.A.
Author_Institution :
Appl. Magnetics Corp., Goleta, CA, USA
fDate :
3/1/1995 12:00:00 AM
Abstract :
A procedure for rapidly evaluating the error rate performance of PRML channels is derived. The procedure, Sequenced Amplitude Margin (SAM), is a direct analogy to window margin techniques that are used for evaluating peak detection channels. SAM is computed from amplitude sampling errors, while window margin is a function of peak timing errors. Examples of the use of SAM to optimize filters, evaluate off-track performance, and compare PR4 with E/sup 2/PR4 systems are described.<>
Keywords :
magnetic recording; maximum likelihood detection; partial response channels; signal sampling; PRML channel performance; amplitude sampling errors; error rate performance; off-track performance; peak timing errors; sequenced amplitude margin; window-margin-like procedure; Detectors; Error analysis; Error correction; Filters; Magnetics; Sampling methods; Timing;
Journal_Title :
Magnetics, IEEE Transactions on
