Title :
Bit error rate performance of iterative decoding in a perpendicular magnetic recording channel
Author :
Okamoto, Y. ; Kanaoka, T. ; Osawa, H. ; Saito, H. ; Muraoka, H. ; Nakamura, Y.
Author_Institution :
Fac. of Eng., Ehime Univ., Matsuyama, Japan
fDate :
3/1/2001 12:00:00 AM
Abstract :
The BER performance of iterative decoding systems and PRML systems in a perpendicular magnetic recording channel is experimentally investigated. A performance evaluation system consisting of a spinstand, a recording waveform generator, a digital storage oscilloscope and a personal computer was used. PR1ML, PR2ML, EPR3ML, E2PR3ML and ME2PR4ML systems are discussed as a PRML channel. The 8/9 and 16/17 iterative decoding systems consists of the encoder, with RSC encoder serially concatenated with preceded PR channels and the iterative decoder with APP modules using Max-log-MAP algorithm. The results show that EPR3ML and E2PR3ML provide good BER performance in a perpendicular magnetic recording channel and that the iterative decoding system is also an efficient way to improve the BER performance in the channel
Keywords :
concatenated codes; convolutional codes; iterative decoding; maximum likelihood detection; partial response channels; perpendicular magnetic recording; APP module; E2PR3ML; EPR3ML; ME2PR4ML; Max-log-MAP algorithm; PR1ML; PR2ML; PRML system; RSC encoder; bit error rate; digital storage oscilloscope; iterative decoding; perpendicular magnetic recording channel; personal computer; serial concatenation; spinstand; waveform generator; Bit error rate; Digital magnetic recording; Error analysis; Iterative decoding; Magnetic heads; Maximum likelihood decoding; Perpendicular magnetic recording; Signal generators; Signal processing; Turbo codes;
Journal_Title :
Magnetics, IEEE Transactions on
