Decision feedback equalization with multichannel readback in high-density optical recording

Srinivasan Gopalaswamy; Bhagavatula Vijaya Kumar

doi:10.1117/12.228245

8 December 1995 Decision feedback equalization with multichannel readback in high-density optical recording

Srinivasan Gopalaswamy, Bhagavatula Vijaya Kumar

Proceedings Volume 2605, Coding and Signal Processing for Information Storage; (1995) https://doi.org/10.1117/12.228245
Event: Photonics East '95, 1995, Philadelphia, PA, United States

Abstract

Multi-channel readback using array heads has been reported in optical recording. A method to reduce both interference along and across the tracks using multi-channel readback is presented. In this method, the non-linear multi-channel decision feedback equalization is used to remove both forms of interference. Simulation results show good improvement (in performance) by using the multi-channel equalization. By this readback method, tracks can be brought closer, thus increasing the areal density. Another advantage of this method is the high data rate possible.

Citation Download Citation

Srinivasan Gopalaswamy and Bhagavatula Vijaya Kumar "Decision feedback equalization with multichannel readback in high-density optical recording", Proc. SPIE 2605, Coding and Signal Processing for Information Storage, (8 December 1995); https://doi.org/10.1117/12.228245

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