Abstract:

Regarding to the multicluster Laplacian power azimuth spectrum (PAS)，a closed form expression for the channel correlation applicable to the uniform linear a rray (ULA) and uniform circular array (UCA) is derived. Both the PAS and cross polarization discrimination (XPD) are taken into consideration. The channel corr elation values introduced by the singleand multicluster Laplacian distributi on with the same angular spread(AS) are compared. The channel correlation as a f unction of the antenna spacing of the ULA or the radius of the UCA is analyzed i n conditions of different ASs in cluster. With different mean angles and ASs the equivalent antenna spacings which produce the same channel correlation with cor responding XPDs are also presented.

Key words: channel correlation, antenna spacing, crosspolarization discrimination, power azimuth spectrum