Abstract
In this paper, based on 28 GHz MIMO ( $4\times 4$ ) channel measurements performed for both LOS and NLOS scenarios, channel capacity and system link budget are analyzed. The MIMO channel capacity is modeled as function of distance. Moreover, spatial correlation between antenna elements on channel capacity is studied. Specifically, considering MIMO antenna elements are for uncorrelated, partial-correlation and full-correlation, channel capacity is investigated. Results show that correlation coefficient decreases with the increasing of distance generally. The uncorrelated channel can achieve much bigger capacity than partial correlation and complete correlation channels. In complete correlation MIMO channel, simulation results fit quite well with measurement data. This indicates that the real MIMO channel is more close to complete correlation fading channel. The provided results are useful for design of 5G wireless communication systems.
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