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Wideband multiple-input multiple-output (MIMO) channel measurements were performed at5.25GHz in the hotspot environment in Beijing.The propagation mechanism was line-of-sight and ob-structed-line-of-sight (LOS/OLOS) in the outdoor scenario.Using a large amount of estimated angle ofdeparture (AoD) and angle of arrival (AoA) results,the cumulative distribution functions (CDFs) of di-rectional spread (DS) are extracted,which illustrate that the spatial dispersion is quite significant at bothends due to the low antenna height of base station and rich scatterers.The average power azimuth spec-trum (PAS) is found to be well fitted with a Laplacian function.In addition,the non-isotropic property ofspatial correlation is investigated,and the average envelop correlation over arbitrary antenna spacing pro-vides the correlation distance to facilitate the MIMO optimization and deployment in the outdoor hotspotenvironment.
Wideband multiple-input multiple-output (MIMO) channel measurements were performed at 5.25GHz in the hotspot environment in Beijing. The propagation mechanism was line-of-sight and ob-structed-line-of-sight (LOS / OLOS) in the Using a large amount of estimated angle of arrival (AoD) and angle of arrival (AoA) results, the cumulative distribution functions (CDFs) of di-rectional spread (DS) are extracted, which illustrate that the spatial dispersion is quite significant at bothends due to the low antenna height of base station and rich scatterers. average power azimuth spec-trum (PAS) is found to be fitted fitted with a Laplacian function. In addition, the non-isotropic property ofspatial correlation is investigated, and the average envelop correlation over arbitrary antenna spacing pro-vides the correlation distance to facilitate the MIMO optimization and deployment in the outdoor hotspot environment.