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The lower VHF band shows potential for reliable communications in low power, short range scenarios among near-ground nodes in both indoor and urban environments. Such scenarios are of great interest, for example, in military and search-and-rescue settings. Most prior work at low VHF focuses on modeling path loss at long range. In this paper, we study indoor/outdoor near-ground scenarios through experiments...
In this study, we propose a sub-system with a long-haul transmission system for bridge emergency. A fiber Bragg grating is inserted into the sub-system to monitor the bridge situation. In addition, we setup an alternative free space optic route to replace the fiber cable route in case the bridge is damaged or collapsed. A 10 Gb/s per channel data rate over 75 km fiber span is used to verify the system...
All-optical 2R regeneration of a 160-Gbit/s RZ-OOK signal is demonstrated in a fiber optical parametric amplifier using a highly nonlinear fiber with the data as pump. Bit error rate bathtub curves validate the regeneration performance.
We present a physical-layer authentication framework for communications over a Poisson channel. Focusing on on-off keying, we discuss such aspects as the stealth, robustness, and security of the authentication approach.
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