Spread-space spread-spectrum technique for secure multiplexing
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|Title:||Spread-space spread-spectrum technique for secure multiplexing||Authors:||Hennelly, Bryan M.
Naughton, Thomas J.
McDonald, John B.
Sheridan, John T.
Kelly, Damien P.
|Permanent link:||http://hdl.handle.net/10197/3420||Date:||1-May-2007||Abstract:||A novel technique for multiplexing complex images is proposed in which each image may be demultiplexed only if a set of random encryption keys is known. The technique utilizes the ability of the double random phase encoding method to spread a signals’ energy in both the space and the spatial frequency domains in a controlled manner. To multiplex, images are independently encrypted with different phase keys and then superimposed by recording sequentially on the same material. Each image is extracted by using the particular key associated with it. During decryption the energy from the other images is further spread, making it possible to minimize its effects by using suitable ﬁlters. Wigner analysis is applied to the technique, and numerical results are presented.||Funding Details:||Irish Research Council for Science, Engineering and Technology||Type of material:||Journal Article||Publisher:||Optical Society of America||Copyright (published version):||2007 Optical Society of America||Subject LCSH:||Spread spectrum communications
Fourier transform optics
|DOI:||10.1364/OL.32.001060||Language:||en||Status of Item:||Not peer reviewed|
|Appears in Collections:||Electrical and Electronic Engineering Research Collection|
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