Title :
Adaptive Volterra-DFE and timing recovery in digital magnetic recording system
Author :
Lin, JuiYuan ; Wei, CheHo
Author_Institution :
Inst. of Electron., Nat. Chiao Tung Univ., Hsinchu, Taiwan
fDate :
30 May-2 Jun 1994
Abstract :
In high density digital magnetic recording system, it is found from experimental results that the peak position of transition pulse is shifted by the effect of the adjacent transitions. The nonlinear intersymbol interference (ISI) induced by the nonlinear pulse shift can be equalized by employing a Volterra-DFE, in which a Volterra filter is used in the feedback section of decision feedback structure. The timing function, in conjunction with the channel estimator, is used to control the sampling clock to maximize the signal-to-noise ratio at the output of Volterra-DFE. Computer simulation show that the Volterra-DFE outperforms the conventional DFE in both output SNR and BER
Keywords :
Volterra series; adaptive equalisers; decision feedback equalisers; digital magnetic recording; error statistics; intersymbol interference; timing; BER; Volterra filter; adaptive Volterra DFE; adjacent transitions; bit error rate; channel estimator; decision feedback structure; digital magnetic recording system; high density magnetic recording; nonlinear ISI; nonlinear pulse shift; output SNR; sampling clock control; timing function; timing recovery; Clocks; Computer simulation; Decision feedback equalizers; Digital magnetic recording; Filters; Intersymbol interference; Magnetic separation; Sampling methods; Signal to noise ratio; Timing;
Conference_Titel :
Circuits and Systems, 1994. ISCAS '94., 1994 IEEE International Symposium on
Conference_Location :
London
Print_ISBN :
0-7803-1915-X
DOI :
10.1109/ISCAS.1994.409097
