Abstract
The signal distortion can result in unacceptable bit error rate in data storage system. The low-pass nature of system is one of the significant sources of the signal distortion in the volume holographic memory (VHM). The current research interesting is how to improve the signal performance and enhance the reliability of VHM.A reduced channel model is developed to investigate the low-pass nature of the VHM. Specially, the influence on the signal from the low-pass nature of VHM is characterized by the inter-pixel interference (IPI) in a data page. Recently, some reseachers has adopted and proposed the linear transversal filter in order to cope with the IPI. However, the intensity measurement derived from the CCD is not a simple linear combination of the data. In some cases, its performance can't approach to the optimal solution. In this works, a new multiplayer percpetion based on nonlinear equalizer is introduced to counter IPI, the simulation result show that the performance of such a nonlinear equalizer is superior to that of the linear equalizer.
Published Version
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