The new generation of communication technologies are constantly being pushed to meet a diverse range of user requirements such as high data rate, low power consumption, very low latency, very high reliability and broad availability. To address all these demands, 5G radio access technologies have been extended into a wide range of new services. However, there are still only a limited number of applications for RF based wireless communications inside aircraft cabins that comply with the 5G vision. Potential interference and safety issues in on-board wireless communications pose significant deployment challenges. By transforming each reading light into an optical wireless AP, LiFi, could provide seamless on-board connectivity in dense cabin environments without RF interference. Furthermore, the utilization of available reading lights allows for a relatively simple, cost-effective deployment with the high energy and spectral efficiency. To successfully implement the aeronautical cabin LiFi applications, comprehensive optical channel characterization is required. In this paper, we propose a novel MCRT channel modelling technique to capture the details of in-flight LiFi links. Accordingly, a realistic channel simulator, which takes the cabin models, interior elements and measurement based optical source, receiver, surface material characteristics into account is developed. The effect of the operation wavelength, cabin model accuracy and user terminal mobility on the optical channel conditions is also investigated. As a final step, the on-board DCO-OFDM performance is evaluated by using obtained in-flight LiFi channels. Numerical results show that the location of a mobile terminal and accurate aircraft cabin modelling yield as much as 12 and 2 dB performance difference, respectively.
翻译:新一代通信技术不断被推动,以满足多种用户需求,如高数据率、低电耗、低潜值、高可靠性和广泛供应等,为满足所有这些需求,5G无线电接入技术已推广到范围广泛的新服务,然而,在符合5G愿景的飞机机舱内,仍然只有为数不多的基于RF的无线通信应用程序;机载无线通信中潜在的干扰和安全问题构成了巨大的部署挑战;通过将每个读灯转换成光学无线AP(LIFi),可以在不受到RF干扰的密室环境中提供无缝的机载连接;此外,利用现有阅读灯使得能够以高能源和光谱效率相对简单、成本效益地部署;要成功实施航空机舱LiFi应用,需要全面的光学频道定性;在本文中,我们提议采用新型的MCRT频道模拟模拟技术,以获取机舱模型模型、内部元素和测量基于光学源的机舱环境、接收器、地表材料性能,并在机舱运行过程中分别对机舱的运行情况进行精确度评估。