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针对市郊移动通信环境，在三维（ThreeDimensional,3D）空间域信道模型中分析和研究线阵列（Uniformlineararray, ULA）和环阵列（Uniform Circular array, UCA）多入多出（Multiple Input Multiple Output, MIMO）多天线系统。采用荷叶状空间信道模型，在计算波达信号概率密度函数的基础上，着重从天线阵列导向矢量和信道自相关函数两方面导出 ULA 和 UCA 天线阵元间的信号衰落相关性的表达式，阐明天线阵元间距和角度参数对信号衰落相关性的影响机理。 分析结果与实际信道测量结果相比较，信道容量与实际信道测量结果较为吻合。 天线阵元间距和波达信号角度扩展对MIMO多天线系统性能起到决定性作用。
Aiming at the suburban mobile communication environment, Uniformlineararray (ULA) and Uniform Circular Array (UCA) Multiple Input Multiple Output (MIMO) are analyzed and studied in the channel model of Three Dimensional (3D) Multi-antenna system. Based on the lotus-shaped spatial channel model, based on the calculation of the probability density function of the POD signal, the expression of signal fading correlation between the ULA and UCA antenna elements is derived from two aspects: the antenna array steering vector and the channel autocorrelation function. The influence mechanism of antenna array element spacing and angle parameters on signal fading correlation is illustrated. Compared with the actual channel measurement results, the channel capacity is in good agreement with the actual channel measurement results. Antenna array spacing and the spread of the DOA signal angle play a decisive role in MIMO multi-antenna system performance.