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针对符合多簇拉普拉斯分布的功率角度谱,推导了适用于均匀线阵和均匀圆阵信道相关性的闭式表达式.该表达式反映了信道角度功率谱以及交叉极化鉴别率对信道相关性的影响.比较了具有相同角度扩展的单簇与多簇拉普拉斯角度功率谱引入信道相关性的差异.分析了簇内角度扩展不同时,天线阵列信道相关性随均匀线阵天线间距或均匀圆阵半径的变化.给出了簇内平均角和簇内角度扩展分别取不同值时,信道交叉极化鉴别率对应的等效天线间距.
A closed-form expression suitable for channel correlation between uniform linear array and uniform circular array is derived for the power angle spectrum that conforms to the multi-cluster Laplacian distribution. The expression reflects the channel angle power spectrum and the cross polarization discrimination rate The influence of channel correlation is compared.The differences of channel correlation between the single-cluster and multi-cluster Laplacian power spectra with the same angle spread are compared.The channel correlation of the antenna array is analyzed with the uniform linear array The variation of the antenna pitch or the uniform circular array radius, the equivalent antenna spacing corresponding to the cross-polarization discrimination of the channel is given when the average intra-cluster angle and the intra-cluster angular extension respectively take different values.