Theoretical Analysis of 3D Channel Spatial Correlation and Capacity

Yawei Yu, ZHANG Jianhua, Peter J. Smith, Pawel A. Dmochowski
IEEE Communications Letters , 2017 ( Vol.PP, Issue: 99 )
Publish Year: 2017,

Abstract: In this letter, an approximate closed-form expression for 3D channel spatial correlation (SC) is derived, given cross-polarized rectangular arrays and standards based antenna radiation patterns. Furthermore, we evaluate the impact of 3D SC on system performance and derive the capacity relationship between 2D and 3D channels. As expected, the 3D channel is characterized by lower SC and higher channel capacity than its 2D counterpart by taking advantage of the additional degrees of freedom in the elevation domain, where 3D antenna arrays and 3D channel propagation are considered.

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