Abstract
This paper introduces the concept of Two-Dimensional Optical Storage (TwoDOS). In this concept, bits are written in a broad spiral consisting of a number of bit-rows stacked together in a hexagonal packing. Bits with a value '1' are represented physically as circular pit-holes on the disc, while bits with a value '0' are characterized by the absence of such a pit-hole. A scalar diffraction model is used to calculate the signal levels for various diameters of the pits. A stripe-wise Viterbi detector is proposed to perform 2D bit-detection with a limited state complexity of the trellis. Simulation results are shown for various diameters of the pits. A 2D modulation code is applied to eliminate patterns that yield a high probability of erroneous detection.
| Original language | English |
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| Pages | 3904-3908 |
| Number of pages | 5 |
| Publication status | Published - 2003 |
| Event | IEEE Global Telecommunications Conference GLOBECOM'03 - San Francisco, CA, United States Duration: 1 Dec 2003 → 5 Dec 2003 |
Conference
| Conference | IEEE Global Telecommunications Conference GLOBECOM'03 |
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| Country/Territory | United States |
| City | San Francisco, CA |
| Period | 1/12/03 → 5/12/03 |