Jie Zhong, Ji Zhou, Shecheng Gao, Weiping Liu. Secure orthogonal time-frequency multiplexing with two-dimensional encryption for optical-wireless communications[J]. Chinese Optics Letters, 2021, 19(5): 050603
- Chinese Optics Letters
- Vol. 19, Issue 5, 050603 (2021)
Fig. 1. Block diagram of secure DCO-OTFM system for OWC. E/O, electro/optic; O/E, optic/electro.
Fig. 2. Performance of BER versus SNR for deciphered signals with different keys through CB channel; w/o, without. (a) BER and decoded constellations for 4QAM signals. (b) BER and decoded constellations for 16QAM signals.
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Table 1. All Possible Periodicity Values TAr for Different M, with N = 16, q = 1 and a, b as the Arbitrary Integers
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Table 2. Values of TAr Depend on Different b, with M = 256, N = 16, q = 1, and a = 1
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