Title :
Upper Limits on Achievable Storage Density Using Turbo Equalization in 2-D Magnetic Recording
Author :
Jaehyeong No ; Jaekyun Moon
Author_Institution :
Dept. of Electr. Eng., Korea Adv. Inst. of Sci. & Technol., Daejeon, South Korea
Abstract :
The maximum amounts of 2-D intersymbol interference that can be tolerated by the specific types of turbo equalizers are analyzed using the extrinsic information transfer charts. The results translate into the maximum normalized user density that each equalizer can support given an ample channel signal-to-noise ratio. It is shown that a low-complexity self-iterating equalizer based on individually weak linear component equalizers running in different directions provides excellent performance.
Keywords :
equalisers; intersymbol interference; magnetic recording; turbo codes; 2-D intersymbol interference; 2-D magnetic recording; achievable storage density; extrinsic information transfer charts; individually weak linear component equalizers; low-complexity self-iterating equalizer; maximum normalized user density; turbo equalization; Arrays; Complexity theory; Decoding; Equalizers; Interference; Signal to noise ratio; 2-D intersymbol interference (ISI); EXIT chart; Two-dimensional intersymbol interference; extrinsic information transfer (EXIT) chart; soft-in soft-out (SISO) linear equalizer (LE); soft-in soft-out linear equalizer; turbo equalizer;
Journal_Title :
Magnetics, IEEE Transactions on
DOI :
10.1109/TMAG.2015.2436994
