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无线紫外光非直视通信中,大气散射和收发角度是影响紫外光通信系统性能的重要因素。在无线紫外光非直视通信单次散射模型的基础上,提出了一种适合于紫外光非直视通信的信噪比和信道容量估算方法,并将该方法与量子极限法进行对比计算,验证了无线紫外光通信信道容量估算法的正确性。利用计算机仿真了收发端角度对紫外光通信中路径损耗、信道容量的影响,并分析了不同背景噪声环境下的信道容量。仿真结果表明,发送、接收仰角及接收视场角对紫外光通信中的路径损耗、信道容量影响较大,而发散角对其影响不大,且信道容量随背景噪声的增大而减小。
In wireless UV light communication, atmospheric scattering and transmitting and receiving angles are important factors that affect the performance of the UV communication system. Based on the single-scattering model of wireless UV direct communication, this paper proposes a method for estimating signal-to-noise ratio and channel capacity which is suitable for non-direct-view UV communication. The method is compared with the quantum limit method, Verify the correctness of the capacity estimation method of wireless UV communication channel. Computer simulation of the transmitting and receiving end angle on the path loss of ultraviolet light communication, channel capacity, and analysis of different background noise channel capacity. The simulation results show that the transmitting and receiving elevation angle and the receiving angle of view have a great influence on the path loss and channel capacity in the ultraviolet communication, but the divergence angle has little effect on the channel loss and the channel capacity decreases with the increase of the background noise.