Antenna Correlation Under Geometry-Based Stochastic Channel Models

Yilin Ji; Wei Fan; Pekka Kyösti; Jinxing Li; Gert Frølund Pedersen

doi:10.1109/LAWP.2019.2943413

Antenna Correlation Under Geometry-Based Stochastic Channel Models

Yilin Ji, Wei Fan, Pekka Kyösti, Jinxing Li, Gert Frølund Pedersen

Research output: Contribution to journal › Journal article › Research › peer-review

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Abstract

Antenna correlation is an important measure for designing multiple-input-multiple-output (MIMO) antenna systems. A lower antenna correlation indicates a better MIMO performance that can be achieved with the underlying antenna systems. In the antenna design community, it is very common to evaluate the antenna correlation with isotropic or nonisotropic (e.g., Gaussian-distributed) angular power spectrum (APS) as baselines. On the other hand, antenna correlation can also be evaluated via channel transfer function (CTF) under the given propagation channel, e.g., drawn from the bidirectional geometry-based stochastic channel model. In this letter, the analytic forms for the antenna correlation based on the APS and the CTF are derived, respectively, with their similarities and differences explained. Moreover, a numerical example is also given with a standard channel model to support our findings.

Original language	English
Article number	8847459
Journal	IEEE Antennas and Wireless Propagation Letters
Volume	18
Issue number	12
Pages (from-to)	2567-2571
Number of pages	5
ISSN	1536-1225
DOIs	https://doi.org/10.1109/LAWP.2019.2943413
Publication status	Published - 25 Dec 2019

Keywords

Angular power spectrum (APS)
antenna correlation
geometry-based stochastic channel model (GSCM)
multiple-input-multiple-output (MIMO)
spread function

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10.1109/LAWP.2019.2943413

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title = "Antenna Correlation Under Geometry-Based Stochastic Channel Models",

abstract = "Antenna correlation is an important measure for designing multiple-input-multiple-output (MIMO) antenna systems. A lower antenna correlation indicates a better MIMO performance that can be achieved with the underlying antenna systems. In the antenna design community, it is very common to evaluate the antenna correlation with isotropic or nonisotropic (e.g., Gaussian-distributed) angular power spectrum (APS) as baselines. On the other hand, antenna correlation can also be evaluated via channel transfer function (CTF) under the given propagation channel, e.g., drawn from the bidirectional geometry-based stochastic channel model. In this letter, the analytic forms for the antenna correlation based on the APS and the CTF are derived, respectively, with their similarities and differences explained. Moreover, a numerical example is also given with a standard channel model to support our findings.",

keywords = "Angular power spectrum (APS), antenna correlation, geometry-based stochastic channel model (GSCM), multiple-input-multiple-output (MIMO), spread function",

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AU - Fan, Wei

AU - Kyösti, Pekka

AU - Li, Jinxing

AU - Pedersen, Gert Frølund

PY - 2019/12/25

Y1 - 2019/12/25

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Antenna Correlation Under Geometry-Based Stochastic Channel Models

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Radio Propagation Channel Characterization and MIMO Over-the-Air Testing

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