频率选择性衰落MIMO信道的GBDB模型及其性能分析

针对频率选择性MIMO信道建立GBDB模型。综合考虑了无线衰落信道收发两端的多普勒扩展、非均匀角度扩展以及平均发射与到达方向,综合考虑了收发端天线阵的配置,推导出频率选择性MIMO信道的联合空时频相关函数,给出该模型的时延扩展的概率密度函数、时延谱与角度谱,并且与实测数据进行对比分析,验证了该模型的准确性。

GBDB Model for frequency-selective fading MIMO channels and its Performance Analysis

Aiming at mobile frequency selective fading MIMO channels,this paper proposes the GBDB (Geometrically Based Double-Bounce) channels model,the new space-time correlation function takes account of all parameters of MIMO system such as the Doppler spread,the nonuniform angle spread,and antenna array configuration.Based on the proposed model.The pdf of delay,PDS and PAS are gived.The accuracy of model is verified by comparing the theoretical curves of PDS and PAS with measured curves.