arXivDaily arXiv每日学术速递 周一至周五更新
arXiv 2008.12334eess.SPcs.SYeess.SY
收藏

空中平台可重构智能曲面链路预算分析

Link Budget Analysis for Reconfigurable Smart Surfaces in Aerial Platforms

Safwan Alfattani, Wael Jaafar, Yassine Hmamouche, Halim Yanikomeroglu, Abbas Yongaçoglu

摘要:

包括无人机(UAV)、高空平台站(HAPS)和低地球轨道(LEO)卫星在内的非地面网络预计将在第六代无线网络中发挥关键作用。凭借其固有的特点,如灵活的布局,宽的足迹,和首选的信道条件,他们可以解决目前的地面网络的几个挑战,但是,他们的成功和广泛采用依赖于节能的板载通信系统。在这种情况下,将可重构智能表面(RSS)集成到空中平台中被认为是实现空中平台节能和成本效益部署的关键因素。事实上,RSS由低成本的反射器组成,能够以近乎被动的方式巧妙地引导信号。我们在本文中的RSS辅助通信的链接预算下讨论的RSS反射范式在文献中,即镜面反射和散射反射范式类型。具体来说,我们分析了RSS装备的空中平台的特点,并比较其通信性能与RSS辅助地面网络,使用标准化的信道模型。此外,我们推导出最佳的空中平台放置在这两个反射范例。所获得的结果提供了重要的见解RSS辅助通信的设计。例如,给定HAPS具有大的RSS表面,它在大多数研究的场景中提供优越的链路预算性能。相比之下,UAV上有限的RSS区域和LEO卫星通信中的大传播损耗使它们不适合支持地面用户。最后,配备RSS的平台的最佳位置可以取决于平台的高度、覆盖范围和环境类型。

英文摘要:

Non-terrestrial networks, including Unmanned Aerial Vehicles (UAVs), High Altitude Platform Station (HAPS) and Low Earth Orbiting (LEO) satellites, are expected to have a pivotal role in the sixth generation wireless networks. With their inherent features such as flexible placement, wide footprint, and preferred channel conditions, they can tackle several challenges in current terrestrial networks However, their successful and widespread adoption relies on energy-efficient on-board communication systems. In this context, the integration of Reconfigurable Smart Surfaces (RSS) into aerial platforms is envisioned as a key enabler of energy-efficient and cost-effective deployments of aerial platforms. Indeed, RSS consist of low-cost reflectors capable of smartly directing signals in a nearly passive way. We investigate in this paper the link budget of RSS-assisted communications under the two discussed RSS reflection paradigms in the literature, namely the specular and the scattering reflection paradigm types. Specifically, we analyze the characteristics of RSS-equipped aerial platforms and compare their communication performance with that of RSS-assisted terrestrial networks, using standardized channel models. In addition, we derive the optimal aerial platforms placements under both reflection paradigms. The obtained results provide important insights for the design of RSS-assisted communications. For instance, given that a HAPS has a large RSS surface, it provides superior link budget performance in most studied scenarios. In contrast, the limited RSS area on UAVs and the large propagation loss in LEO satellite communications make them unfavorable candidates for supporting terrestrial users. Finally, the optimal location of the RSS-equipped platform may depend on the platform's altitude, coverage footprint, and type of environment.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

↑