# 3D Channel Modeling and Characterization for Hypersurface Empowered Indoor Environment at 60 GHz Millimeter-Wave Band

## TL;DR

This paper develops a 3D indoor channel model at 60 GHz incorporating Hypersurface effects, demonstrating how intelligent metasurfaces can manipulate electromagnetic waves to enhance wireless connectivity.

## Contribution

It introduces a novel 3D channel model considering Hypersurface functionalities and evaluates their impact in indoor environments at millimeter-wave frequencies.

## Key findings

- Hypersurface can significantly improve signal propagation by controlling reflections.
- Simulation results show enhanced connectivity with Hypersurface-coated walls.
- The model aids in designing better indoor mmWave communication systems.

## Abstract

This paper proposes a three-dimensional (3D) communication channel model for an indoor environment considering the effect of the Hypersurface. The Hypersurface is a software controlled intelligent metasurface, which can be used to manipulate electromagnetic waves, as for example for non-specular reflection and full absorption. Thus it can control the impinging rays from a transmitter towards a receiver location in both LOS and NLOS paths, e.g. to combat distance and improve wireless connectivity. We focus on the 60 GHz mmWave frequency band due to its increasing significance in 5G/6G networks and evaluate the effect of Hypersurface in an indoor environment in terms of attenuation coefficients related to the Hypersurface reflection and absorption functionalities, using CST simulation, a 3D electromagnetic simulator of high frequency components. To highlight the benefits of Hypersurface coated walls versus plain walls, we use the derived Hypersurface 3D channel model and a custom 3D ray-tracing simulator for plain walls considering a typical indoor scenario for different Tx-Rx location and separation distances.