Linear Signal Processing for a Holographic Data Storage Channel Using Coherent Addition

A linear channel model and a linear signal processing technique are available for a holographic data storage channel when our proposed coherent addition technique is applied to the reproduction process. As a result, the signal-to-noise ratio (SNR) after zero-interpixel-interference (IPI) equalization is markedly improved. Moreover, we can achieve a higher transfer rate at a lower oversampling rate owing to the almost ideal linearity of the reproduced signal.