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RIS-Enhanced MIMO Channels in Urban Environments: Experimental Insights
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  • James Rains ,
  • anvar tukmanov ,
  • Qammer H. Abbasi ,
  • Muhammad Imran
James Rains
University of Glasgow

Corresponding Author:[email protected]

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anvar tukmanov
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Qammer H. Abbasi
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Muhammad Imran
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Abstract

Can the smart radio environment paradigm measurably enhance the performance of contemporary urban macrocells? In this study, we explore the impact of reconfigurable intelligent surfaces (RISs) on a real-world sub-6 GHz MIMO channel. A rooftop-mounted macrocell antenna has been adapted to enable frequency domain channel measurements to be ascertained. A nature-inspired beam search algorithm has been employed to maximize channel gain at user positions, revealing a potential 50% increase in channel capacity in certain circumstances. Analysis reveals, however, that the spatial characteristics of the channel can be adversely affected through the introduction of a RIS in these settings. The RIS prototype schematics, Gerber files, and source code have been made available to aid in future experimental efforts of the wireless research community.