论文标题
6G室内可见光通信系统的新型3D非平稳渠道模型
A Novel 3D Non-Stationary Channel Model for 6G Indoor Visible Light Communication Systems
论文作者
论文摘要
可见光通信（VLC）技术在第六代（6G）通信系统的研究中引起了很多关注。在本文中，为室内VLC通道提出了一种新型的三维（3D）时空非平稳的随机模型（GBSM）。提出的VLC GBSM可以捕获独特的室内VLC通道特征，例如，在室内场景，长长的行进路径和大的可见光波浪中，由大型发光二极管（LED）阵列引起的时空频率非平稳性。此外，所提出的模型可以支持LED的特殊辐射模式，光学接收器（RX）的3D平移和旋转运动，并可以应用于角度多样性接收器（ADR）。模拟和分析关键通道属性，包括时空频率相关函数（STFCF），接收的功率，均方根（RMS）延迟差异和路径损失（PL）。仿真结果验证了室内VLC通道中的时空频率非平稳性。最后，通过将通道3DB带宽的仿真结果与现有测量数据进行比较，可以验证所提出模型的准确性和实用性。提出的渠道模型将在未来6G VLC系统的设计中发挥支持作用。
The visible light communication (VLC) technology has attracted much attention in the research of the sixth generation (6G) communication systems. In this paper, a novel three dimensional (3D) space-time-frequency non-stationary geometry-based stochastic model (GBSM) is proposed for indoor VLC channels. The proposed VLC GBSM can capture unique indoor VLC channel characteristics such as the space-time-frequency non-stationarity caused by large light-emitting diode (LED) arrays in indoor scenarios, long travelling paths, and large bandwidths of visible light waves, respectively. In addition, the proposed model can support special radiation patterns of LEDs, 3D translational and rotational motions of the optical receiver (Rx), and can be applied to angle diversity receivers (ADRs). Key channel properties are simulated and analyzed, including the space-time-frequency correlation function (STFCF), received power, root mean square (RMS) delay spread, and path loss (PL). Simulation results verify the space-time-frequency non-stationarity in indoor VLC channels. Finally, the accuracy and practicality of the proposed model are validated by comparing the simulation result of channel 3dB bandwidth with the existing measurement data. The proposed channel model will play a supporting role in the design of future 6G VLC systems.
