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Ultraviolet technology has a wide range of applications in military and civilian fields, such as space detection, ultraviolet light guidance, ultraviolet interference, corona discharge detection and military communications. Starting from the single and multiple scattering of ultraviolet light, this paper first introduces the progress of ultraviolet optical communication at home and abroad. Then it analyzes the different links in ultraviolet optical communication. Next, it discusses the pulse broadening effect and atmospheric turbulence of ultraviolet communication in non-direct link ultraviolet communication. Finally, the paper summarizes the ultraviolet Ad Hoc network, and shows the trend of the development of ultraviolet optical communication. [ABSTRACT FROM AUTHOR]

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Concerning that the interruption probability of most existing MAC method is high and the transmission capacity under high spreading gain is small, this paper proposed a MAC method based on SMSS in Ad hoc networks, with the aim to mitigate far field interference using a robust DSSS physical layer, while managing near field interference used intelligent slow fre-quency hopping. SMSS ensured a minimum threshold of SINR at active receivers, under low outage probability constraints. SMSS did not inhibit any nodes in space neither thins them out in time. It derived the mathematical model of the lower limit of the transmission capacity in the case of variable frequency hopping. Experimental results show that the proposed MAC SMSS method has a great advantage of transmission capacity, more than of ALOHA and MAC protocol based on protected areas. For smaller spread gain, the advantage is more obvious. [ABSTRACT FROM AUTHOR]

In order to resolve the shortcomings of AODV protocol in energy consumption, improve the energy-aware, and achieve flexible compromise of transmission efficiency and energy consumption in a variety of network environment, this paper proposed an optimized energy-aware reverse AODV (ER-AODV) routing protocol. ER-AODV protocol applied the design scheme on the basis of backward AODV and with combination of minimum power and energy balance, and proposed an optimized link cost function to select the best path as the route. The simulation result shows that when the weighting factor in the cost function is unchangeable, ER-AODV can clearly improve the energy-aware compared to AODV. When the weighting factor in the cost function is changeable, ER-AODV is able to achieve flexible compromise of transmission efficiency and energy consumption in a variety of network environment. [ABSTRACT FROM AUTHOR]

Due to the non-centralization and self-organization of Ad hoc networks, network nodes don't need management infrastructure to transmit information and have the freedom of any management. It makes power control problem an important component of radio resource management in Ad hoc networks. This paper proposed a multi-bid evaluation based power control algorithm. The algorithm firstly proposed a new utility function with pricing of interference, and secondly under the assumption that the utility function only depended on signal to interference plus noise ratio, and that the pricing function was proportional to interference, modeled the power control problem a kind of non-cooperative game, finally proved the existence and uniqueness of the Nash equilibrium of this non-cooperative model with pricing of interference. Simulation results show that compared to existing algorithms, the proposed algorithm has a faster convergence rate. [ABSTRACT FROM AUTHOR]