Abstract
We discuss two algorithms for mitigating the deleterious effects of nonlinear intersymbol interference (ISI) in PR4- and EPR4-equalized magnetic recording channel. We call them RAM-Search algorithms as they borrow the idea of employing a RAM (random access memory) from the RAM-DFE, and because they involve a search. The algorithms have been devised to circumvent the error propagation problem that arises in making tentative decisions in ISI cancellers used together with partial response signaling. Adopting a simple partial erasure model for the magneto-inductive head and a third-order polynomial model for the magneto-resistive head to represent the nonlinear distortion, we show that improvements of about 3 dB are possible.
| Original language | English |
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| Pages | 3368-3372 |
| Number of pages | 5 |
| Publication status | Published - 1998 |
| Externally published | Yes |
| Event | Proceedings of the IEEE GLOBECOM 1998 - The Bridge to the Global Integration - Sydney, NSW, Aust Duration: 8 Nov 1998 → 12 Nov 1998 |
Conference
| Conference | Proceedings of the IEEE GLOBECOM 1998 - The Bridge to the Global Integration |
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| City | Sydney, NSW, Aust |
| Period | 8/11/98 → 12/11/98 |