Title :
Design considerations of sampled analog equalizer for hard-disk read channel
Author :
Choi, Jungryoul ; Choi, Joongho
Author_Institution :
Dept. of Electr. Eng., Seoul Univ., South Korea
Abstract :
The partial-response maximum likelihood (PRML) method requires efficient equalization in order to obtain the desired patterns of ISI before the signal processing of Viterbi decoding is applied. The sampled analog system is the most efficient way to implement the partial response algorithm and it has been mainly implemented by an analog FIR filter. In this paper, various design considerations-gain error offset, system resolution, and the jitter problem for the equalizer-are presented to incorporate the sampled analog system. Finally, the modified phase detector algorithm for a sampled analog equalizer is proposed
Keywords :
FIR filters; Viterbi decoding; analogue processing circuits; digital-analogue conversion; equalisers; hard discs; jitter; partial response channels; phase detectors; sampled data circuits; DAC; ISI; PRML method; Viterbi decoding; analog FIR filter; gain error offset; hard-disk read channel; jitter; modified phase detector algorithm; partial response algorithm; partial-response maximum likelihood method; sampled analog equalizer; sampled analog system; sampled and hold amplifier; signal processing; storage capacity; system resolution; Equalizers; Finite impulse response filter; Intersymbol interference; Jitter; Maximum likelihood decoding; Maximum likelihood detection; Phase detection; Signal processing algorithms; Signal resolution; Viterbi algorithm;
Conference_Titel :
TENCON 99. Proceedings of the IEEE Region 10 Conference
Conference_Location :
Cheju Island
Print_ISBN :
0-7803-5739-6
DOI :
10.1109/TENCON.1999.818679
