Experimental spatial correlation characteristics of propagation channels in indoor environments

Abstract

Spatial auto-and cross-correlation characteristics of propagation channels are investigated for four indoor scenarios using measurement data. In addition to the well-known spatial auto-correlation effect, significant cross-correlation between channels is also observed. We found that non-zero spatial crosscorrelation among channels may occur in three scenarios with possibly different mechanisms. These results should be considered when establishing realistic models for the spatial cross-correlation behavior of channels.

Measurement-Based Stochastic Cross-Correlation Models of a Multilink Channel in Cooperative Communication Environments

“…Propagation environments may introduce high crosscorrelations among multiple channels owing to the deterministic components induced by line-of-sight (LOS) and dominant non-LOS propagation paths and to the similar propagations experienced by signals in different links [4], [5].…”

“…Furthermore, the modeling of SSF, which is closely related to the correlation of two components in different channels, has never been seriously considered, mostly because the uncorrelated scattering assumption is usually considered valid, and is therefore adopted in most cases. Recent studies addressed in [4], [5], and [15] have demonstrated that, for indoor propagation, the correlation of channels with the same location for the TX and different RXs can be significantly high. This is observable in indoor environments with corridor structures.…”