Title :
Feedforward noise canceller for PR1ML
Author :
Marukawa, S. ; Hiratsuka, T. ; Ogura, Y. ; Urita, K.
Author_Institution :
Res. & Dev. Lab., Matsushita-Kotobuki Electron. Ind. Ltd., Ehime, Japan
fDate :
9/1/1997 12:00:00 AM
Abstract :
We present the performance of a feedforward noise canceller (FNC) for the PR1 [(1+D)] channel combined with an 8/10 DC free code. It appears the PR1 channel can be superior to PR4 [(1-D)(1+D)] and EPR4 [(1-D)(1+D)2] for high density magnetic recording due to a characteristic of high frequency suppression. Simulation results show that PR1 with FNC is better than EPR4 for K⩾2.5 [K=PW50/T]. We adapted PR1 with FNC into an actual DDS3 (Digital Data Storage 3) system and we got an improved result. Applying FNC to DDS3 system can improve the error rate by around 102
Keywords :
feedforward; interference suppression; magnetic recording noise; maximum likelihood detection; partial response channels; DC free code; Digital Data Storage 3 system; PR1ML channel; feedforward noise canceller; high density magnetic recording; high frequency suppression; Bit error rate; Cutoff frequency; Detectors; Equalizers; Error analysis; Finite impulse response filter; Frequency; Low pass filters; Low-frequency noise; Magnetic recording; Magnetic separation; Memory; Noise cancellation; Signal to noise ratio;
Journal_Title :
Magnetics, IEEE Transactions on
