Title :
Combined modulation/parity codes for magnetic recording
Author :
Cideciyan, Roy D. ; Eleftheriou, Evangelos
Author_Institution :
IBM Zurich Res. Lab., Ruschlikon, Switzerland
fDate :
29 June-4 July 2003
Abstract :
Inner coding schemes for magnetic recording that cascade a modulation encoder with a parity-check encoder followed by a precoder are considered. A set of desired parity-check equations that are satisfied by the combined modulation/parity code words at the output of the precoder is transformed into a set of parity-check equations at the input of the precoder. Efficient combination of a maximum transition run (MTR) code with a parity-check code is demonstrated by constructing a rate-96/104 combined MTR/parity code that largely retains the properties of the original MTR code.
Keywords :
magnetic recording; modulation coding; parity check codes; combined modulation code; inner coding scheme; magnetic recording; maximum transition run code; modulation encoder; parity-check encoder; parity-check equation; precoder; Convolutional codes; Equations; Event detection; Laboratories; Magnetic modulators; Magnetic recording; Marine vehicles; Modulation coding; Parity check codes; Sufficient conditions;
Conference_Titel :
Information Theory, 2003. Proceedings. IEEE International Symposium on
Print_ISBN :
0-7803-7728-1
DOI :
10.1109/ISIT.2003.1228062
