Title :
A 16/18 trellis code for EPR4 magnetic recording channel
Author :
Uchida, Masaki ; Hayashi, Nobuhiro ; Yada, Hiroaki
Author_Institution :
Giga Byte Lab., Sony Corp., Tokyo, Japan
Abstract :
For magnetic recording channels with EPR4 signaling, a rate 16/18 (0,6) trellis code and a time-varying Viterbi detector for the code are proposed and examined. A method to construct the code that has a pseudo matched spectral null (MSN) at the Nyquist frequency is described. We show that the TC-EPR4ML detection with the proposed 16/18 (0,6) code can provide 1.5 dB and 1 dB gains compared to the conventional 16/17 EPR4ML and 16/18 TC-PR4ML detection respectively at a user bit density of 2.5
Keywords :
Viterbi detection; digital magnetic recording; maximum likelihood detection; partial response channels; trellis codes; 1 dB; 1.5 dB; EPR4 signaling; Nyquist frequency; TC-EPR4ML detection; magnetic recording channel; partial response channel; pseudo matched spectral null; rate 16/18 trellis code; time-varying Viterbi detector; Convolutional codes; Detectors; Equations; Euclidean distance; Frequency; Gain; Laboratories; Magnetic recording; Phase detection; Polynomials;
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.1998.776482
