Abstract
A new form of coding is described which allows certain minimum distance error events on the PR4 partial response channel to be eliminated. When used on the magnetic recording channel, this method provides an increase in effective SNR of 1.25 dB at recording densities of interest. The minimum distance events eliminated are those which are most affected by noise correlation. Parity codes are shown to achieve the desired effect but with poor run length properties. Codes with a zero running digital sum modulo 3 are shown to achieve the desired gain but with better run length properties. The performance gains are evaluated by analysis and simulations, and the complexity of implementation is compared to alternative methods.
Original language | English |
---|---|
Pages | 363-367 |
Number of pages | 5 |
Publication status | Published - 1996 |
Event | Proceedings of the 1996 IEEE Communications Theory Mini-Conference. Part 4 (of 4) - London, UK Duration: 18 Nov 1996 → 22 Nov 1996 |
Conference
Conference | Proceedings of the 1996 IEEE Communications Theory Mini-Conference. Part 4 (of 4) |
---|---|
City | London, UK |
Period | 18/11/96 → 22/11/96 |