Analytical read back signal modeling in magnetic recording
نویسندگان
چکیده
An analytical model for the read back signal is derived for perpendicular and longitudinal magnetic recording. The model captures the contribution of a single bit rather than the contribution of a bit transition which makes it applicable to patterned media as well as continuous media. It is based on the law of Biot–Savart and separates the contribution of the magnetic media from the head sensitivity function.
منابع مشابه
On the Information-Theoretic Capacity of Magnetic Recording Systems in the Presence of Medium Noise
The compound behavior of the magnetic recording channel is modeled by combining the Lorentzian read-back pulse, the microtrack channel model, and additive white Gaussian noise (AWGN). By noting that at the output of this model the read-back signal is cyclostationary, the average autocorrelation function and corresponding power spectral density over one period are computed. The average power spe...
متن کاملAnalytical Modeling of Magnetic Field Distribution in Inner Rotor Brushless Magnet Segmented Surface Inset Permanent Magnet Machines
Brushless permanent magnet surface inset machines are interested in industrial applications due to their high efficiency and power density. Magnet segmentation is a common technique in order to mitigate cogging torque and electromagnetic torque components in these machines. An accurate computation of magnetic vector potential is necessary in order to compute cogging torque, electromagnetic torq...
متن کاملمشخصه های آماری ذرات ضبط مغناطیسی
In magnetic recording media, the remanent magnetization loop, Mr(H)has some parameters, which explain the prperties of the medium in view of the storage density and signal-to-noise ratio. It is necessary to find the mechanism of Mr variations from the statistical characteristics of the system. We have prepared samples of single-domain ascicolar iron particles with 0.3 length, and the oriented...
متن کاملSignal Processing for Two-dimensional Magnetic Recording
With magnetic storage devices already achieving storage densities of up to 400 Gigabits per square inch (Gb/in), the state of the art is rapidly approaching theoretical limits (dictated by thermal stability concerns). Hence, there is an effort in the industry to develop alternative magnetic storage technologies. Two-dimensional magnetic recording (TDMR) is one such candidate technology. In cont...
متن کاملTwo-Dimensional Magnetic Recording: Read Channel Modeling and Detection
Two-dimensional magnetic recording (TDMR) is a novel storage architecture that, in theory, can achieve a density of upto 10 Tb/in. It uniquely differs from other proposed next-generation architectures because of its reliance on sophisticated two-dimensional signal processing algorithms. Recently, a number of contributions have been made in the development of read-channel models and detectors fo...
متن کامل