Title :
Numerical results on capacity bounds for magnetic recording channels
Author :
Wu, Zi-Ning ; Lin, Susan ; Cioffi, John M.
Author_Institution :
Inf. Syst. Lab., Stanford Univ., CA, USA
Abstract :
Capacity for magnetic recording channels has been difficult to calculate due to the binary input constraint. We summarize different capacity bounding techniques for channels with media and electronics noise. The performance of existing detectors are computed and compared to the proposed capacity bounds. Simulation results project a less than 3 dB gap between the capacity lower and upper bounds, and a potential coding gain of 4-6 dB for the current read channel detectors
Keywords :
channel capacity; digital magnetic recording; noise; optimisation; sensors; Lorentzian channel; binary input constraint; capacity bounds; coding gain; correlated noise constraints; detector performance; electronics noise; lower bound; magnetic recording channels; media noise; numerical results; read channel detectors; sequential convex optimization method; simulation results; upper bound; AWGN; Additive white noise; Channel capacity; Detectors; Gaussian noise; Information systems; Laboratories; Magnetic recording; Optimization methods; Upper bound;
Conference_Titel :
Global Telecommunications Conference, 1998. GLOBECOM 1998. The Bridge to Global Integration. IEEE
Conference_Location :
Sydney,NSW
Print_ISBN :
0-7803-4984-9
DOI :
10.1109/GLOCOM.1998.775831
