一种新的非全向散射MIMO M2M宽带衰落信道模型

A New Fading Channel Model for Non-isotropic Scattering Distribution Wideband MIMO M2M

针对MIMO移动对移动(mobile-to-mobile,M2M)宽带通信系统提出了新的衰落信道模型,该模型根据T形街道几何散射模型推导而来。模型充分考虑了非全向单次、二次散射以及到达角(AoA)和发射角(AoD)之间的关系,据此关系推导了信道参考模型和仿真模型,并分析了仿真模型的相关特性,给出了空-时-频互相关函数的闭合表达式。最后,仿真模型与实测的多普勒功率谱密度(PSD)的对比相似度证明了该模型的可用性。

In this paper, a new fading channel model for MIMO mobile-to-mobile （M2M） communication system is proposed. This channel model is derived from the T-intersection geometric scattering model. In the channel model, the non-isotropic single, double-bounced scattering rays in different energies and the exact reiationship between angle of arri val （AoA） and angle of departure （AoD） are taken into account. Based on this relationship, the reference model and the simulation model are derived. The correlation properties of the simulation model are studied. Closed-form expression is provided for the space-time-frequency cross-correlation function （STF：CCF）. Finally, the excellent correspondence between PSD of the simulation model and the measured data Droves the availabilitv of this model.