Performance Analysis of Complex Phase-code for Phase Multiplexed Holographic Memory System 


Vol. 28,  No. 1, pp. 1-8, Jan.  2003


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  Abstract

In this paper, performance of the CPC(complex phase code) which is recently proposed as a practical phase encoding method for phase-code multiplexed holographic memory system is comparatively analyzed with those of the conventional phase codes such a s PR(pure random code), RCE(random code with equality), WHM(Walsh Hadamard Matrix). In computer simulation, the size of an address beam is fixed at 32x32 pixels and 0%~25% phase-error ratio in a pixel are intentionally added to the real phase values to consider the nonlinear phase-modulation characteristics of the practical spatial light modulator From comparative analysis of crosstalks and signal-to-noise ratios for these phase codes by calculating auto-correlation and cross-correlation, it is found that the CPC have the lowest cross-correlation mean value of 0.021, the lowest standard deviation of 0.0113 and the highest signal-to-noise ratio(SNR) of 27.4 among the four types of phase code In addition, from the calculation of the number of all possible address beams for these four types of phase code In addition, from the calculation of the number of all possible address beams for these four types of phase code as the size of the address beam is fixed to 3232 pixels, the CPC is found to have 6.334x1049 address beams, which are relatively higher number than that of the conventional phase codes

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  Cite this article

[IEEE Style]

B. C. Cho, J. J. Kim, E. Kim, "Performance Analysis of Complex Phase-code for Phase Multiplexed Holographic Memory System," The Journal of Korean Institute of Communications and Information Sciences, vol. 28, no. 1, pp. 1-8, 2003. DOI: .

[ACM Style]

Byung Chul Cho, Jung Jin Kim, and Eun-Soo Kim. 2003. Performance Analysis of Complex Phase-code for Phase Multiplexed Holographic Memory System. The Journal of Korean Institute of Communications and Information Sciences, 28, 1, (2003), 1-8. DOI: .

[KICS Style]

Byung Chul Cho, Jung Jin Kim, Eun-Soo Kim, "Performance Analysis of Complex Phase-code for Phase Multiplexed Holographic Memory System," The Journal of Korean Institute of Communications and Information Sciences, vol. 28, no. 1, pp. 1-8, 1. 2003.

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pISSN : 1226 - 4717
eISSN : 2287 - 3880