Achievable Rate of UAV-based Communication with Uniform Circular Arrays in Ricean Fading
Achievable Rate of UAV-based Communication with Uniform Circular Arrays in Ricean Fading
复制标题
莱斯衰落中基于无人机的均匀圆形阵列通信可达到的速率
DOI：
10.1016/j.phycom.2018.11.010
复制
发表时间：
2019
影响因子：
2.2
通讯作者：
Zheng Shi
中科院分区：
文献类型：
--
作者：
Weijie Tan;Shidang Li;Chunlong He;Weiqiang Tan;Xiaobo Gu;Zheng Shi
在未来的无线通信系统中，将无人机与大规模MIMO技术相结合，具有可靠性高、性价比高、部署灵活等优点，是满足日益增长的数据需求的一种有前途的解决方案。本文研究了无人机收发信机配置圆形天线阵时，在里氏衰落条件下无人机通信的可达速率。我们开发了一种有效的统计特征模空分多址传输(SE-SDMA)方案，该方案只需要知道无人机收发信机的CSI。推导了UCA配置的无人机通信系统可达速率的精确表达式，其中收发信机采用信道响应向量作为波束形成预编码器。在理论结果的基础上，我们得到了可实现的误码率与系统参数的关系，使得可实现的和速率在高信噪比条件下趋于饱和值。此外，我们还发现，不同统计信道向量之间较高的Ricean K因子和较小的内积对于无人机通信系统的和速率是有贡献的。
In future wireless communication systems, combining unmanned aerial vehicles (UAVs) with massive MIMO technology is a promising solution to meet ever-increasing data demand due to it has advantages of high reliability, cost effective, and flexible deployment. In this paper, we study the achievable rate of UAV-based communication under Ricean fading, where the transceivers of UAV is equipped with circular antenna array (UCA) configuration. We exploit an effective statistical-eigenmode space division multiple-access transmission (SE-SDMA) scheme with only the knowledge of the CSI at the UAV’s transceivers. An exact expression on the achievable rate of UAV-based communication systems with UCA configuration is derived, in which the transceivers utilizes the channel response vector as the beamforming precoder. Based on the derived theoretical results, we gain the relationships of the achievable SE and the system parameters, such that the achievable sum-rate tends to a saturation value in the high signal-to-noise ratio regime. In addition, we find that the high Ricean K-factor and the small values of inner product between different statistical channel vector are contribute to the achievable sum-rate of the UAV-based communication system.