Statistical channel modeling for indoor VLC communications based on channel measurements

Shuo Liu, Pan Tang, Jianhua Zhang, Yue Yin, Yu Tong, Baobao Liu, Guangyi Liu, Liang Xia
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引用次数: 1

Abstract

Visible light communication (VLC) has attracted much attention in the research of sixth-generation (6G) systems. Furthermore, channel modeling is the foundation for designing efficient and robust VLC systems. In this paper, we present extensive VLC channel measurement campaigns in indoor environments, i.e., an office and a corridor. Based on the measured data, the large-scale fading characteristics and multipath-related characteristics, including omnidirectional optical path loss (OPL), K-factor, power angular spectrum (PAS), angle spread (AS), and clustering characteristics, are analyzed and modeled through a statistical method. Based on the extracted statistics of the above-mentioned channel characteristics, we propose a statistical spatial channel model (SSCM) capable of modeling multipath in the spatial domain. Furthermore, the simulated statistics of the proposed model are compared with the measured statistics. For instance, in the office, the simulated path loss exponent (PLE) and the measured PLE are 1.96 and 1.97, respectively. And, the simulated medians of AS and measured medians of AS are 25.94° and 24.84°, respectively. Generally, the fact that the simulated results fit well with measured results has demonstrated the accuracy of our SSCM.
基于信道测量的室内 VLC 通信统计信道建模
可见光通信(VLC)在第六代(6G)系统研究中备受关注。此外,信道建模是设计高效、稳健的 VLC 系统的基础。本文介绍了在室内环境(即办公室和走廊)中进行的大量 VLC 信道测量活动。在测量数据的基础上,通过统计方法分析了大规模衰减特性和多路径相关特性,包括全向光路径损耗 (OPL)、K 因子、功率角频谱 (PAS)、角度展宽 (AS) 和聚类特性。根据上述信道特征的统计提取结果,我们提出了一种统计空间信道模型(SSCM),能够在空间域对多径进行建模。此外,我们还将所提模型的模拟统计数据与实测统计数据进行了比较。例如,在办公室,模拟路径损耗指数(PLE)和实测路径损耗指数分别为 1.96 和 1.97。此外,模拟的 AS 中值和测量的 AS 中值分别为 25.94° 和 24.84°。总体而言,模拟结果与测量结果非常吻合,这证明了我们的 SSCM 的准确性。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
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