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arXiv 2312.00550eess.SP
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非各向同性MIMO车对车信道的基于三维几何的新型随机模型

Novel 3D Geometry-Based Stochastic Models for Non-Isotropic MIMO Vehicle-to-Vehicle Channels

Yi Yuan, Cheng-Xiang Wang, Xiang Cheng, Bo Ai, David I. Laurenson

AI总结:

本文提出一种结合双球与椭圆柱的三维非各向同性MIMO V2V信道模型及SoS仿真模型,联合考虑方位角和俯仰角,并证明其比二维模型更准确,尤其适用于微微蜂窝场景。

摘要:

本文针对非各向同性多输入多输出(MIMO)车对车(V2V)莱斯衰落信道,提出了一种新型三维(3D)理论规则形状几何随机模型(RS-GBSM)及相应的正弦波叠加(SoS)仿真模型。所提出的RS-GBSM结合了视距(LoS)分量、双球模型和椭圆柱模型,能够研究车辆交通密度(VTD)对信道统计特性的影响,并通过使用von Mises Fisher分布联合考虑方位角和俯仰角。此外,提出了一种新型参数计算方法,用于在SoS信道仿真器中联合计算方位角和俯仰角。基于所提出的三维理论RS-GBSM及其SoS仿真模型,推导并深入研究了统计特性。通过与相应的二维(2D)模型进行比较,研究了三维模型中俯仰角对关键统计特性的影响。结果表明,三维模型能够更准确地刻画真实V2V信道,特别是在微微蜂窝场景中。最后,理论模型、SoS仿真模型和仿真结果之间取得了高度一致,证明了所提出模型的有效性。

英文摘要:

This paper proposes a novel three-dimensional (3D) theoretical regular-shaped geometry-based stochastic model (RS-GBSM) and the corresponding sum-of-sinusoids (SoS) simulation model for non-isotropic multiple-input multiple-output (MIMO) vehicle-to-vehicle (V2V) Ricean fading channels. The proposed RS-GBSM, combining line-of-sight (LoS) components, a two-sphere model, and an elliptic-cylinder model, has the ability to study the impact of the vehicular traffic density (VTD) on channel statistics, and jointly considers the azimuth and elevation angles by using the von Mises Fisher distribution. Moreover, a novel parameter computation method is proposed for jointly calculating the azimuth and elevation angles in the SoS channel simulator. Based on the proposed 3D theoretical RS-GBSM and its SoS simulation model, statistical properties are derived and thoroughly investigated. The impact of the elevation angle in the 3D model on key statistical properties is investigated by comparing with those of the corresponding two-dimensional (2D) model. It is demonstrated that the 3D model is more accurate to characterize real V2V channels, in particular for pico cell scenarios. Finally, close agreement is achieved between the theoretical model, SoS simulation model, and simulation results, demonstrating the utility of the proposed models.

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。

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