Journal article
Secure multiple access for indoor optical wireless communications with time-slot coding and chaotic phase
T Liang, K Wang, C Lim, E Wong, T Song, A Nirmalathas
Optics Express | OPTICAL SOC AMER | Published : 2017
DOI: 10.1364/OE.25.022046
Abstract
In this paper, we report a novel mechanism to simultaneously provide secure connections for multiple users in indoor optical wireless communication systems by employing the time-slot coding scheme together with chaotic phase sequence. The chaotic phase sequence is generated according to the logistic map and applied to each symbol to secure the transmission. Proof-of-concept experiments are carried out for multiple system capacities based on both 4-QAM and 16-QAM modulation formats, i.e. 1.25 Gb/s, 2 Gb/s and 2.5 Gb/s for 4-QAM, and 2.5 Gb/s, 3.33 Gb/s and 4 Gb/s for 16-QAM. Experimental results show that in all cases the added chaotic phase does not degrade the legitimate user's signal quali..
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Awarded by Australian Research Council
Funding Acknowledgements
This work is supported by Australian Research Council Discovery Project DP170100268. The authors would also like to acknowledge the Australian Commonwealth Government for providing Australian Research Training Program Scholarship.