Title :
A ternary coded magnetic recording system
Author :
Krueger, Dan ; Cruz, J.R. ; He, Runsheng
Author_Institution :
Sch. of Electr. Eng., Oklahoma Univ., Norman, OK, USA
Abstract :
A method for implementing a magnetic recording system using a ternary Trumpis (1975) code is discussed and evaluated theoretically. The saturation recording technique is extended from two level recording to three level recording by using a nonoriented media state in conjunction with two oppositely oriented media states. A Lorentzian model of the magnetic recording channel is used to find the theoretical performance of the system. Rate 1 binary-to-ternary convolutional codes of constraint length 7 are found to provide an increase in the effective signal-to-noise ratio of the magnetic recording channel
Keywords :
convolutional codes; digital magnetic recording; telecommunication channels; Lorentzian model; SNR; constraint length; digital magnetic recording; magnetic recording channel; nonoriented media state; oppositely oriented media states; rate 1 binary-to-ternary convolutional codes; saturation recording technique; signal-to-noise ratio; system performance; ternary Trumpis code; ternary coded magnetic recording system; theoretical performance; three level recording; two level recording; Convolutional codes; Density measurement; Digital magnetic recording; Error correction codes; Helium; Magnetic heads; Magnetic recording; Saturation magnetization; Timing; Velocity measurement;
Conference_Titel :
Communications, 1995. ICC '95 Seattle, 'Gateway to Globalization', 1995 IEEE International Conference on
Conference_Location :
Seattle, WA
Print_ISBN :
0-7803-2486-2
DOI :
10.1109/ICC.1995.525245
