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arXiv · 1905.04931

Massive MIMO Extensions to the COST 2100 Channel Model: Modeling and Validation

Jose Flordelis·Xuhong Li·Ove Edfors·Fredrik Tufvesson
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Abstract

To enable realistic studies of massive multiple-input multiple-output systems, the COST 2100 channel model is extended based on measurements. First, the concept of a base station-side visibility region (BS-VR) is proposed to model the appearance and disappearance of clusters when using a physically-large array. We find that BS-VR lifetimes are exponentially distributed, and that the number of BS-VRs is Poisson distributed with intensity proportional to the sum of the array length and the mean lifetime. Simulations suggest that under certain conditions longer lifetimes can help decorrelating closely-located users. Second, the concept of a multipath component visibility region (MPC-VR) is proposed to model birth-death processes of individual MPCs at the mobile station side. We find that both MPC lifetimes and MPC-VR radii are lognormally distributed. Simulations suggest that unless MPC-VRs are applied the channel condition number is overestimated. Key statistical properties of the proposed extensions, e.g., autocorrelation functions, maximum likelihood estimators, and Cramer-Rao bounds, are derived and analyzed.

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Jose Flordelis, Xuhong Li, Ove Edfors, Fredrik Tufvesson. 2019-05-13. Massive MIMO Extensions to the COST 2100 Channel Model: Modeling and Validation. https://arxiv.org/abs/1905.04931

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