An Algorithm of Channel Sharing for the Solar Blind NLOS Ultraviolet Ad-Hoc Network Based on the Hybrid Genetic Algorithm

Abstract

The solar blind NLOS ultraviolet Ad-hoc network communication bases on atmosphere scatter and absorption. An algorithm of channel sharing for the solar blind NLOS ultraviolet Ad-Hoc network is proposed to avoid conflict. The conflict nodes in the network are colorized based on the hybrid genetic algorithm, and then the network has a higher spatial reuse. The Simulation results show the algorithm of high-speed efficiency, thus having a better engineering practicability.

Vapor-Transport Synthesis and Annealing Study of ZnxMg1–xO Nanowire Arrays for Selective, Solar-Blind UV-C Detection

“…Ultraviolet, solar-blind communication systems that exploit atmospheric scattering to propagate signals toward a nonline of sight receiver (with ranges on the order of kilometers) have been examined extensively, yet the detectors in these receiver systems have largely been dominated by bulky and costly photomultiplier tubes. 1−3 Semiconductor-based deep-UV detectors have consequently become of great interest due to their potential advantages of producing low-cost, low-power-consumption, highly scalable solutions. Although ZnO nanowire (NW)-based photodetectors have been heavily investigated, this material system only exhibits a cutoff detection corresponding to the band-edge energy of ZnO in the UV-A spectrum (3.10–3.94 eV).…”

“…Ultraviolet, solar-blind communication systems that exploit atmospheric scattering to propagate signals toward a nonline of sight receiver (with ranges on the order of kilometers) have been examined extensively, yet the detectors in these receiver systems have largely been dominated by bulky and costly photomultiplier tubes. − Semiconductor-based deep-UV detectors have consequently become of great interest due to their potential advantages of producing low-cost, low-power-consumption, highly scalable solutions. Although ZnO nanowire (NW)-based photodetectors have been heavily investigated, this material system only exhibits a cutoff detection corresponding to the band-edge energy of ZnO in the UV-A spectrum (3.10–3.94 eV). − Substitutional doping of Mg with ZnO, on the other hand, has been described as a means of engineering the bandgap of a ternary Zn x Mg 1– x O system as high as a 5.8 eV for solar-blind photodetectors. − Although Mg has been reported as a feasible dopant to ZnO (due to the similar ionic radii of Zn 2+ and Mg 2+ ), , Mg/ZnO alloy systems have also shown to phase segregate for high Mg content .…”

UVAd-TDMA: An MAC Protocol for the Solar Blind Ultraviolet Ad-Hoc Network

“…But the above literatures were not involved the single channel non-competitive MAC protocol in the solar blind UV NLOS Ad-hoc communication network. Based on previous research work [12], this paper proposes a novel MAC protocol when channel shared in the solar blind UV NLOS Ad-hoc communication network-UVAd-TDMA protocol. According to the shared channel temporal-spatial allocation algorithm based on the hybrid genetic algorithm [12], we do slot allocation for nodes of network topology shown in Figure 1.…”

“…Based on previous research work [12], this paper proposes a novel MAC protocol when channel shared in the solar blind UV NLOS Ad-hoc communication network-UVAd-TDMA protocol. According to the shared channel temporal-spatial allocation algorithm based on the hybrid genetic algorithm [12], we do slot allocation for nodes of network topology shown in Figure 1. Nodes with the same color can be allocated in the same slot (Figure 3), for example, node 1 and node 4, node 3 and node 5, nodes with different colors are distributed in different slots, such as node 1 and node 3, node 4 and node 5, where the number of slots changes with the chromatic number.…”