Abstract
A method to improve the error rate performance of PRML systems with an Inter-symbol Interference (ISI) canceller having a tentative sequence detector is presented. The new system adopts a combination of a minimum phase noise whitening matched filter and a Viterbi detector with a path feedback scheme as a tentative detector. The result obtained by computer simulation shows that at a bit-error rate of 10-4, the proposed systems improves the SNR by about 6.3 dB compared with the conventional EPR4ML system without an ISI canceller.
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