Physical-Layer Security in Orbital Angular Momentum Multiplexing Free-Space Optical Communications
The physical-layer security of a line-of-sight (LOS) free-space optical (FSO) link using orbital angular momentum (OAM) multiplexing is studied. We discuss the effect of atmospheric turbulence to OAM-multiplexed FSO channels. We numerically simulate the propagation of OAM-multiplexed beam and study...
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| Language: | en |
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IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC
2016
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| Online Access: | http://hdl.handle.net/10150/615106 http://arizona.openrepository.com/arizona/handle/10150/615106 |
| Summary: | The physical-layer security of a line-of-sight (LOS) free-space optical (FSO) link using orbital angular momentum (OAM) multiplexing is studied. We discuss the effect of atmospheric turbulence to OAM-multiplexed FSO channels. We numerically simulate the propagation of OAM-multiplexed beam and study the secrecy capacity. We show that, under certain conditions, the OAM multiplexing technique provides higher security over a single-mode transmission channel in terms of the total secrecy capacity and the probability of achieving a secure communication. We also study the power cost effect at the transmitter side for both fixed system power and equal channel power scenarios. |
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