Title :
Protograph based quasi-cyclic LDPC coding for ultra-high density magnetic recording channels
Author :
Kong, L. ; He, L. ; Chen, P. ; Han, G. ; Fang, Y.
Author_Institution :
Sch. of Comput. Sci. & Technol., Nanjing Univ. of Posts & Commun., Nanjing, China
Abstract :
Bit-patterned media recording (BPMR), heat (or microwave) assisted magnetic recording (HAMR) and shingled writing (SW)/two-dimensional magnetic recording (TDMR) have been primed to further increase the areal density of magnetic recording beyond 1Tb/in2. However, with the reduction of the track pitch, inter-track interference (ITI) becomes a major impairment for these magnetic recording systems. ITI combined with the conventional (down-track) inter-symbol interference (ISI) forms a two-dimensional (2D) interference that severely degrades the performance of data detection in these systems.
Keywords :
cyclic codes; intersymbol interference; magnetic recording; parity check codes; areal density; bit-patterned media recording; data detection; heat assisted magnetic recording; intersymbol interference; intertrack interference; microwave assisted magnetic recording; protograph based quasicyclic LDPC coding; shingled writing magnetic recording; track pitch; two-dimensional interference; two-dimensional magnetic recording; ultrahigh density magnetic recording channels; Bit error rate; Complexity theory; Decoding; Detectors; Encoding; Magnetic recording; Parity check codes;
Conference_Titel :
Magnetics Conference (INTERMAG), 2015 IEEE
Conference_Location :
Beijing
Print_ISBN :
978-1-4799-7321-7
DOI :
10.1109/INTMAG.2015.7157697
