Information rates for magnetic recording channels with peak- and slope-limited magnetization

A model for magnetic recording is proposed which uses two parameters to describe the limitations on the remanent magnetization in the medium: the dimensionless peak value A/sub m/ and the steepest slope B(s/sup -1/). A low-pass bandwidth restriction W(s/sup -1/) due to read circuits is also included. Lower and upper bounds on the achievable transmission rates are derived in terms of the signal-to-noise ratio. For the case of ideal low-pass restriction with B<>