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Coding tradeoffs for high-density holographic data storage
| Content Provider | Semantic Scholar |
|---|---|
| Author | Burr, Geoffrey W. Marcus, Brian |
| Copyright Year | 1999 |
| Abstract | We present an initial experimental evaluation of coding and signal processing tradeoffs in high-density holographic data storage. Block-based and low-pass modulation codes, predistortion of holographic pages during recording (pre- processing), and conventional equalization (post-processing) are compared using a few recorded holograms. The relative gain in number of stored holograms is obtained by measuring BER as a function of readout power: the effect on density is gauged by the size of the Fourier plane aperture in the holographic system. Results show that equalization provides a 20% density gain, and predistortion a 60% gain. The total improvement in density by combining small apertures with both of these signal processing options is greater than 100% with an 8:12 strong balanced block code, a 6:9 lowpass/sparse code, and a parity thresholding technique with 9.1% overhead. |
| File Format | PDF HTM / HTML |
| DOI | 10.1117/12.370244 |
| Volume Number | 3802 |
| Alternate Webpage(s) | http://geoffreyburr.org/papers/SPIE1999_coding_proceedings.pdf |
| Alternate Webpage(s) | http://sunoptics.caltech.edu/~goffbo/papers/SPIE1999_coding_proceedings.pdf |
| Journal | Optics & Photonics |
| Language | English |
| Access Restriction | Open |
| Content Type | Text |
| Resource Type | Article |
