A TCPR System Using Syndrome Trellis in Mullti-Track Recoding

Abstract

A TCPR system for high density two track digital magnetic recording is proposed. In our system, a reduction in the channel rate due to convolutional coding is avoidable because a two track recording method improves the rate, and the number of ACS's in our system based on the syndrome decoding is fewer than that of the conventional Viterbi decoding. The results show that the proposed system keeps good performance in high density recording and saves SNR by about 3.6dB compared with the conventional NRZ coded PR4ML system at a normalized liner density of 3 and a bit error rate of 10^<-4>.