Title :
Coding for maximum likelihood detection on a magnetic recording channel
Author :
Fredrickson, Lyle J.
Author_Institution :
IBM Corp., San Jose, CA, USA
fDate :
9/1/1990 12:00:00 AM
Abstract :
In the construction of modulation codes, a natural selection process occurs which chooses from a set of sequences which satisfy an underlying system constraint to produce a practical code. A method of selection which increases detectability on a magnetic recording channel using maximum likelihood sequence estimation is analyzed. It is shown that significant coding gains are achievable through the judicious selection of code sequences. In other cases, despite moderate costs in terms of decreased code rate, system reliability is improved
Keywords :
error handling; hard discs; magnetic recording; magnetic recording channel; maximum likelihood sequence estimation; modulation codes; system reliability; AWGN; Additive white noise; Interference constraints; Magnetic modulators; Magnetic recording; Maximum likelihood detection; Maximum likelihood estimation; Modular construction; Modulation coding; Pulse modulation;
Journal_Title :
Magnetics, IEEE Transactions on
