对船舶进行视频监控可以有效了解甲板、机舱等重要部位的实时情况，提升船舶航行的安全性。船舶数量较多时，如果不对无线视频传输资源进行重新分配，容易造成数据传输不完整等问题。本文提出一种无线视频传输资源分配算法，在获得有限信道反馈的基础上，通过对子载波数量和发射功率的调节实现无线视频传输资源的调整，以满足不同船舶对于视频传输速率和误码率的要求。对建立的模型进行仿真研究，发现本文提出的分配算法误码率更低，且信道容量得到了提升。本文提出的无线视频传输资源分配算法有效降低了复杂性，提升了船舶无线视频传输效率。
Video monitoring of the ship can effectively understand the real-time situation of important parts such as deck and engine room, and improve the safety of ship navigation. With a large number of ships, if the wireless video transmission resources are not reallocated, it is easy to cause incomplete data transmission and other problems. In this paper, a wireless video transmission resource allocation algorithm is proposed. Based on the limited channel feedback, the wireless video transmission resources can be adjusted by adjusting the number of subcarriers and transmitting power, so as to meet the requirements of different ships for video transmission rate and bit error rate. The simulation results show that the proposed algorithm has lower bit error rate and improved channel capacity. The proposed wireless video transmission resource allocation algorithm effectively reduces the complexity and improves the efficiency of Marine wireless video transmission.
2023,45(23): 174-177 收稿日期：2023-07-20
DOI：10.3404/j.issn.1672-7649.2023.23.032
分类号：U667.65
作者简介：丁伟祥(1977-),男,硕士,实验师,研究方向为网络安全及网络通信
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